Invokana Drug Information
Generic name: CANAGLIFLOZIN
Uses of Invokana
- (canagliflozin) is indicated: as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus. to reduce the risk of major adverse cardiovascular events (cardiovascular death, nonfatal myocardial infarction and nonfatal stroke) in adults with type 2 diabetes mellitus and established cardiovascular disease (CVD). to reduce the risk of end-stage kidney disease (ESKD), doubling of serum creatinine, cardiovascular (CV) death, and hospitalization for heart failure in adults with type 2 diabetes mellitus and diabetic nephropathy with albuminuria greater than 300 mg/day. INVOKANA is a sodium-glucose co-transporter 2 (SGLT2) inhibitor indicated: As an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus To reduce the risk of major adverse cardiovascular events in adults with type 2 diabetes mellitus and established cardiovascular disease To reduce the risk of end-stage kidney disease, doubling of serum creatinine, cardiovascular death, and hospitalization for heart failure in adults with type 2 diabetes mellitus and diabetic nephropathy with albuminuria.
- Limitations of Use: Not recommended for use to improve glycemic control in patients with type 1 diabetes mellitus Not recommended for use to improve glycemic control in adults with type 2 diabetes mellitus with an eGFR less than 30 mL/min/1.73 m 2 Limitations of Use INVOKANA is not recommended for use to improve glycemic control in patients with type 1 diabetes mellitus . INVOKANA is not recommended for use to improve glycemic control in adults with type 2 diabetes mellitus with an eGFR less than 30 mL/min/1.73 m 2. INVOKANA is likely to be ineffective in this setting based upon its mechanism of action.
Dosage & Administration of Invokana
| eGFR 30 to less than 60 | The maximum recommended dosage is100 mg orally once daily. |
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| eGFR less than 30 |
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Side Effects of Invokana
Clinical Studies Experience
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to the rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. Pool of Placebo-Controlled Trials for Glycemic Control The data in Table 2 is derived from four 26-week placebo-controlled trials where INVOKANA was used as monotherapy in one trial and as add-on therapy in three trials. These data reflect exposure of 1,667 patients to INVOKANA and a mean duration of exposure to INVOKANA of 24 weeks.
Patients received INVOKANA 100 mg (N=833), INVOKANA 300 mg (N=834) or placebo (N=646) once daily. The mean age of the population was 56 years and 2% were older than 75 years of age. Fifty percent (50%) of the population was male and 72% were Caucasian, 12% were Asian, and 5% were Black or African American.
At baseline the population had diabetes for an average of 7.3 years, had a mean HbA 1C of 8.0% and 20% had established microvascular complications of diabetes. Baseline renal function was normal or mildly impaired (mean eGFR 88 mL/min/1.73 m 2 ). Table 2 shows common adverse reactions associated with the use of INVOKANA. These adverse reactions were not present at baseline, occurred more commonly on INVOKANA than on placebo, and occurred in at least 2% of patients treated with either INVOKANA 100 mg or INVOKANA 300 mg. Table 2: Adverse Reactions from Pool of Four 26–Week Placebo-Controlled Studies Reported in ≥ 2% of INVOKANA-Treated Patients The four placebo-controlled trials included one monotherapy trial and three add-on combination trials with metformin, metformin and sulfonylurea, or metformin and pioglitazone.
Note: Percentages were weighted by studies. Study weights were proportional to the harmonic mean of the three treatment sample sizes. Adverse Reaction Placebo N=646 INVOKANA 100 mg N=833 INVOKANA 300 mg N=834 Urinary tract infections Urinary tract infections include the following adverse reactions: Urinary tract infection, Cystitis, Kidney infection, and Urosepsis. 3.8% 5.9% 4.4% Increased urination Increased urination includes the following adverse reactions: Polyuria, Pollakiuria, Urine output increased, Micturition urgency, and Nocturia. 0.7% 5.1% 4.6% Thirst Thirst includes the following adverse reactions: Thirst, Dry mouth, and Polydipsia. 0.1% 2.8% 2.4% Constipation 0.9% 1.8% 2.4% Nausea 1.6% 2.1% 2.3% N=312 N=425 N=430 Female genital mycotic infections Female genital mycotic infections include the following adverse reactions: Vulvovaginal candidiasis, Vulvovaginal mycotic infection, Vulvovaginitis, Vaginal infection, Vulvitis, and Genital infection fungal. 2.8% 10.6% 11.6% Vulvovaginal pruritus 0.0% 1.6% 3.2% N=334 N=408 N=404 Male genital mycotic infections Male genital mycotic infections include the following adverse reactions: Balanitis or Balanoposthitis, Balanitis candida, and Genital infection fungal. 0.7% 4.2% 3.8% Abdominal pain was also more commonly reported in patients taking INVOKANA 100 mg (1.8%), 300 mg (1.7%) than in patients taking placebo (0.8%). Placebo-Controlled Trial in Diabetic Nephropathy The occurrence of adverse reactions for INVOKANA was evaluated in patients participating in CREDENCE, a study in patients with type 2 diabetes mellitus and diabetic nephropathy with albuminuria > 300 mg/day . These data reflect exposure of 2,201 patients to INVOKANA and a mean duration of exposure to INVOKANA of 137 weeks.
The rate of lower limb amputations associated with the use of INVOKANA 100 mg relative to placebo was 12.3 vs 11.2 events per 1000 patient-years, respectively, with 2.6 years mean duration of follow-up. The incidence of hypotension was 2.8% and 1.5% on INVOKANA 100 mg and placebo, respectively. Pool of Placebo- and Active-Controlled Trials for Glycemic Control and Cardiovascular Outcomes The occurrence of adverse reactions for INVOKANA was evaluated in patients participating in placebo- and active-controlled trials and in an integrated analysis of two cardiovascular trials, CANVAS and CANVAS-R. The types and frequency of common adverse reactions observed in the pool of eight clinical trials (which reflect an exposure of 6,177 patients to INVOKANA) were consistent with those listed in Table 2. Percentages were weighted by studies.
Study weights were proportional to the harmonic mean of the three treatment sample sizes. In this pool, INVOKANA was also associated with the adverse reactions of fatigue (1.8%, 2.2%, and 2.0% with comparator, INVOKANA 100 mg, and INVOKANA 300 mg, respectively) and loss of strength or energy (i.e., asthenia) (0.6%, 0.7%, and 1.1% with comparator, INVOKANA 100 mg, and INVOKANA 300 mg, respectively). In the pool of eight clinical trials, the incidence rate of pancreatitis (acute or chronic) was 0.1%, 0.2%, and 0.1% receiving comparator, INVOKANA 100 mg, and INVOKANA 300 mg, respectively. In the pool of eight clinical trials, hypersensitivity-related adverse reactions (including erythema, rash, pruritus, urticaria, and angioedema) occurred in 3.0%, 3.8%, and 4.2% of patients receiving comparator, INVOKANA 100 mg, and INVOKANA 300 mg, respectively.
Five patients experienced serious adverse reactions of hypersensitivity with INVOKANA, which included 4 patients with urticaria and 1 patient with a diffuse rash and urticaria occurring within hours of exposure to INVOKANA. Among these patients, 2 patients discontinued INVOKANA. One patient with urticaria had recurrence when INVOKANA was re-initiated. Photosensitivity-related adverse reactions (including photosensitivity reaction, polymorphic light eruption, and sunburn) occurred in 0.1%, 0.2%, and 0.2% of patients receiving comparator, INVOKANA 100 mg, and INVOKANA 300 mg, respectively. Other adverse reactions occurring more frequently on INVOKANA than on comparator were: Lower Limb Amputation An increased risk of lower limb amputations associated with INVOKANA use versus placebo was observed in CANVAS (5.9 vs 2.8 events per 1000 patient-years) and CANVAS-R (7.5 vs 4.2 events per 1000 patient-years), two randomized, placebo-controlled trials evaluating patients with type 2 diabetes who had either established cardiovascular disease or were at risk for cardiovascular disease.
Patients in CANVAS and CANVAS-R were followed for an average of 5.7 and 2.1 years, respectively . The amputation data for CANVAS and CANVAS-R are shown in Tables 3 and 4, respectively. Table 3: CANVAS Amputations Placebo N=1441 INVOKANA 100 mg N=1445 INVOKANA 300 mg N=1441 INVOKANA (Pooled) N=2886 Note: Incidence is based on the number of patients with at least one amputation, and not the total number of amputation events. A patient's follow-up is calculated from Day 1 to the first amputation event date.
Some patients had more than one amputation. Patients with an amputation, n (%) 22 50 45 95 Total amputations 33 83 79 162 Amputation incidence rate (per 1000 patient-years) 2.8 6.2 5.5
Hazard Ratio (95% CI) -- 2.24 2.01 2.12 Table 4
CANVAS-R Amputations Placebo N=2903 INVOKANA 100 mg (with up-titration to 300 mg) N=2904 Note: Incidence is based on the number of patients with at least one amputation, and not the total number of amputation events. A patient's follow-up is calculated from Day 1 to the first amputation event date. Some patients had more than one amputation.
Patients with an amputation, n (%) 25 45 Total amputations 36 59 Amputation incidence rate (per 1000 patient-years) 4.2
Hazard Ratio (95% CI) -- 1.80 Renal Cell Carcinoma
In the CANVAS trial (mean duration of follow-up of 5.7 years) , the incidence of renal cell carcinoma was 0.15% (2/1331) and 0.29% (8/2716) for placebo and INVOKANA, respectively, excluding patients with less than 6 months of follow-up, less than 90 days of treatment, or a history of renal cell carcinoma. A causal relationship to INVOKANA could not be established due to the limited number of cases. Volume Depletion-Related Adverse Reactions INVOKANA results in an osmotic diuresis, which may lead to reductions in intravascular volume.
In clinical trials for glycemic control, treatment with INVOKANA was associated with a dose-dependent increase in the incidence of volume depletion-related adverse reactions (e.g., hypotension, postural dizziness, orthostatic hypotension, syncope, and dehydration). An increased incidence was observed in patients on the 300 mg dose. The three factors associated with the largest increase in volume depletion-related adverse reactions in these trials were the use of loop diuretics, moderate renal impairment (eGFR 30 to less than 60 mL/min/1.73 m 2 ), and age 75 years and older (Table 5) . Table 5: Proportion of Patients With at Least One Volume Depletion-Related Adverse Reaction (Pooled Results from 8 Clinical Trials for Glycemic Control) Baseline Characteristic Comparator Group Includes placebo and active-comparator groups % INVOKANA 100 mg % INVOKANA 300 mg % Overall population 1.5% 2.3% 3.4% 75 years of age and older Patients could have more than 1 of the listed risk factors 2.6% 4.9% 8.7% eGFR less than 60 mL/min/1.73 m 2 2.5% 4.7% 8.1% Use of loop diuretic 4.7% 3.2% 8.8% Falls In a pool of nine clinical trials with mean duration of exposure to INVOKANA of 85 weeks, the proportion of patients who experienced falls was 1.3%, 1.5%, and 2.1% with comparator, INVOKANA 100 mg, and INVOKANA 300 mg, respectively. The higher risk of falls for patients treated with INVOKANA was observed within the first few weeks of treatment.
Genital Mycotic Infections In the pool of four placebo-controlled clinical trials for glycemic control, female genital mycotic infections (e.g., vulvovaginal mycotic infection, vulvovaginal candidiasis, and vulvovaginitis) occurred in 2.8%, 10.6%, and 11.6% of females treated with placebo, INVOKANA 100 mg, and INVOKANA 300 mg, respectively. Patients with a history of genital mycotic infections were more likely to develop genital mycotic infections on INVOKANA. Female patients who developed genital mycotic infections on INVOKANA were more likely to experience recurrence and require treatment with oral or topical antifungal agents and anti-microbial agents. In females, discontinuation due to genital mycotic infections occurred in 0% and 0.7% of patients treated with placebo and INVOKANA, respectively.
In the pool of four placebo-controlled clinical trials, male genital mycotic infections (e.g., candidal balanitis, balanoposthitis) occurred in 0.7%, 4.2%, and 3.8% of males treated with placebo, INVOKANA 100 mg, and INVOKANA 300 mg, respectively. Male genital mycotic infections occurred more commonly in uncircumcised males and in males with a prior history of balanitis or balanoposthitis. Male patients who developed genital mycotic infections on INVOKANA were more likely to experience recurrent infections (22% on INVOKANA versus none on placebo), and require treatment with oral or topical antifungal agents and anti-microbial agents than patients on comparators.
In males, discontinuations due to genital mycotic infections occurred in 0% and 0.5% of patients treated with placebo and INVOKANA, respectively. In the pooled analysis of 8 randomized trials evaluating glycemic control, phimosis was reported in 0.3% of uncircumcised male patients treated with INVOKANA and 0.2% required circumcision to treat the phimosis. Hypoglycemia In all glycemic control trials, hypoglycemia was defined as any event regardless of symptoms, where biochemical hypoglycemia was documented (any glucose value below or equal to 70 mg/dL). Severe hypoglycemia was defined as an event consistent with hypoglycemia where the patient required the assistance of another person to recover, lost consciousness, or experienced a seizure (regardless of whether biochemical documentation of a low glucose value was obtained). In individual clinical trials of glycemic control , episodes of hypoglycemia occurred at a higher rate when INVOKANA was co-administered with insulin or sulfonylureas (Table 6). Table 6: Incidence of Hypoglycemia Number of patients experiencing at least one event of hypoglycemia based on either biochemically documented episodes or severe hypoglycemic events in the intent-to-treat population in Randomized Clinical Studies of Glycemic Control Monotherapy (26 weeks) Placebo (N=192) INVOKANA 100 mg (N=195) INVOKANA 300 mg (N=197) Overall 5 7 6 In Combination with Metformin (26 weeks) Placebo + Metformin (N=183) INVOKANA 100 mg + Metformin (N=368) INVOKANA 300 mg + Metformin (N=367) Overall 3 16 17 Severe Severe episodes of hypoglycemia were defined as those where the patient required the assistance of another person to recover, lost consciousness, or experienced a seizure (regardless of whether biochemical documentation of a low glucose value was obtained) 0 1 1 In Combination with Metformin (52 weeks) Glimepiride + Metformin (N=482) INVOKANA 100 mg + Metformin (N=483) INVOKANA 300 mg + Metformin (N=485) Overall 165 27 24 Severe 15 2 3 In Combination with Sulfonylurea (18 weeks) Placebo + Sulfonylurea (N=69) INVOKANA 100 mg + Sulfonylurea (N=74) INVOKANA 300 mg + Sulfonylurea (N=72) Overall 4 3 9 In Combination with Metformin + Sulfonylurea (26 weeks) Placebo + Metformin + Sulfonylurea (N=156) INVOKANA 100 mg + Metformin + Sulfonylurea (N=157) INVOKANA 300 mg + Metformin + Sulfonylurea (N=156) Overall 24 43 47 Severe 1 1 0 In Combination with Metformin + Sulfonylurea (52 weeks) Sitagliptin + Metformin + Sulfonylurea (N=378) INVOKANA 300 mg + Metformin + Sulfonylurea (N=377) Overall 154 163 Severe 13 15 In Combination with Metformin + Pioglitazone (26 weeks) Placebo + Metformin + Pioglitazone (N=115) INVOKANA 100 mg + Metformin + Pioglitazone (N=113) INVOKANA 300 mg + Metformin + Pioglitazone (N=114) Overall 3 3 6 In Combination with Insulin (18 weeks) Placebo (N=565) INVOKANA 100 mg (N=566) INVOKANA 300 mg (N=587) Overall 208 279 285 Severe 14 10 16 Bone Fracture In the CANVAS trial , the incidence rates of all adjudicated bone fracture were 1.09, 1.59, and 1.79 events per 100 patient-years of follow-up to placebo, INVOKANA 100 mg, and INVOKANA 300 mg, respectively.
The fracture imbalance was observed within the first 26 weeks of therapy and remained through the end of the trial. Fractures were more likely to be low trauma (e.g., fall from no more than standing height), and affect the distal portion of upper and lower extremities. Laboratory and Imaging Tests Increases in Serum Creatinine and Decreases in eGFR Initiation of INVOKANA causes an increase in serum creatinine and decrease in estimated GFR. In patients with moderate renal impairment, the increase in serum creatinine generally does not exceed 0.2 mg/dL, occurs within the first 6 weeks of starting therapy, and then stabilizes.
Increases that do not fit this pattern should prompt further evaluation to exclude the possibility of acute kidney injury . The acute effect on eGFR reverses after treatment discontinuation suggesting acute hemodynamic changes may play a role in the renal function changes observed with INVOKANA. Increases in Serum Potassium In a pooled population of patients (N=723) in glycemic control trials with moderate renal impairment (eGFR 45 to less than 60 mL/min/1.73 m 2 ), increases in serum potassium to greater than 5.4 mEq/L and 15% above baseline occurred in 5.3%, 5.0%, and 8.8% of patients treated with placebo, INVOKANA 100 mg, and INVOKANA 300 mg, respectively. Severe elevations (greater than or equal to 6.5 mEq/L) occurred in 0.4% of patients treated with placebo, no patients treated with INVOKANA 100 mg, and 1.3% of patients treated with INVOKANA 300 mg. In these patients, increases in potassium were more commonly seen in those with elevated potassium at baseline.
Among patients with moderate renal impairment, approximately 84% were taking medications that interfere with potassium excretion, such as potassium-sparing diuretics, angiotensin-converting-enzyme inhibitors, and angiotensin-receptor blockers . In CREDENCE, no difference in serum potassium, no increase in adverse events of hyperkalemia, and no increase in absolute (> 6.5 mEq/L) or relative (> upper limit of normal and > 15% increase from baseline) increases in serum potassium were observed with INVOKANA 100 mg relative to placebo. Increases in Low-Density Lipoprotein Cholesterol (LDL-C) and non-High-Density Lipoprotein Cholesterol (non-HDL-C) In the pool of four glycemic control placebo-controlled trials, dose-related increases in LDL-C with INVOKANA were observed. Mean changes (percent changes) from baseline in LDL-C relative to placebo were 4.4 mg/dL (4.5%) and 8.2 mg/dL (8.0%) with INVOKANA 100 mg and INVOKANA 300 mg, respectively.
The mean baseline LDL-C levels were 104 to 110 mg/dL across treatment groups. Dose-related increases in non-HDL-C with INVOKANA were observed. Mean changes (percent changes) from baseline in non-HDL-C relative to placebo were 2.1 mg/dL (1.5%) and 5.1 mg/dL (3.6%) with INVOKANA 100 mg and 300 mg, respectively.
The mean baseline non-HDL-C levels were 140 to 147 mg/dL across treatment groups. Increases in Hemoglobin In the pool of four placebo-controlled trials of glycemic control, mean changes (percent changes) from baseline in hemoglobin were -0.18 g/dL (-1.1%) with placebo, 0.47 g/dL (3.5%) with INVOKANA 100 mg, and 0.51 g/dL (3.8%) with INVOKANA 300 mg. The mean baseline hemoglobin value was approximately 14.1 g/dL across treatment groups.
At the end of treatment, 0.8%, 4.0%, and 2.7% of patients treated with placebo, INVOKANA 100 mg, and INVOKANA 300 mg, respectively, had hemoglobin above the upper limit of normal. Decreases in Bone Mineral Density Bone mineral density (BMD) was measured by dual-energy X-ray absorptiometry in a clinical trial of 714 older adults (mean age 64 years) . At 2 years, patients randomized to INVOKANA 100 mg and INVOKANA 300 mg had placebo-corrected declines in BMD at the total hip of 0.9% and 1.2%, respectively, and at the lumbar spine of 0.3% and 0.7%, respectively. Additionally, placebo-adjusted BMD declines were 0.1% at the femoral neck for both INVOKANA doses and 0.4% at the distal forearm for patients randomized to INVOKANA 300 mg.
The placebo-adjusted change at the distal forearm for patients randomized to INVOKANA 100 mg was 0%.
Postmarketing Experience Additional adverse reactions have been identified during post-approval use of
INVOKANA. Because these reactions are reported voluntarily from a population of uncertain size, it is generally not possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Ketoacidosis Acute Kidney Injury Anaphylaxis, Angioedema Urosepsis and Pyelonephritis Necrotizing Fasciitis of the Perineum (Fournier's gangrene)
Warnings & Cautions for Invokana
Diabetic Ketoacidosis in Patients with Type 1 Diabetes Mellitus and Other Ketoacidosis
In patients with type 1 diabetes mellitus, INVOKANA significantly increases the risk of diabetic ketoacidosis, a life-threatening event, beyond the background rate. In placebo-controlled trials of patients with type 1 diabetes mellitus, the risk of ketoacidosis was markedly increased in patients who received sodium glucose transporter 2 (SGLT2) inhibitors compared to patients who received placebo; this risk may be greater with higher doses of INVOKANA. INVOKANA is not indicated for glycemic control in patients with type 1 diabetes mellitus. Type 2 diabetes mellitus and pancreatic disorders (e.g., history of pancreatitis or pancreatic surgery) are also risk factors for ketoacidosis.
There have been postmarketing reports of fatal events of ketoacidosis in patients with type 2 diabetes mellitus using SGLT2 inhibitors, including INVOKANA. Precipitating conditions for diabetic ketoacidosis or other ketoacidosis include acute febrile illness, reduced caloric intake, ketogenic diet, surgery, insulin dose reduction, volume depletion, and alcohol abuse. Signs and symptoms are consistent with dehydration and severe metabolic acidosis and include nausea, vomiting, abdominal pain, generalized malaise, and shortness of breath. Blood glucose levels at presentation may be below those typically expected for diabetic ketoacidosis (e.g., less than 250 mg/dL). Ketoacidosis and glucosuria may persist longer than typically expected.
Urinary glucose excretion persists for 3 days after discontinuing INVOKANA ; however, there have been postmarketing reports of ketoacidosis and glucosuria lasting greater than 6 days and some up to 2 weeks after discontinuation of SGLT2 inhibitors. Consider ketone monitoring in patients at risk for ketoacidosis if indicated by the clinical situation. Assess for ketoacidosis regardless of presenting blood glucose levels in patients who present with signs and symptoms consistent with severe metabolic acidosis.
If ketoacidosis is suspected, discontinue INVOKANA, promptly evaluate, and treat ketoacidosis, if confirmed. Monitor patients for resolution of ketoacidosis before restarting INVOKANA. Withhold INVOKANA, if possible, in temporary clinical situations that could predispose patients to ketoacidosis. Resume INVOKANA when the patient is clinically stable and has resumed oral intake . Educate all patients on the signs and symptoms of ketoacidosis and instruct patients to discontinue INVOKANA and seek medical attention immediately if signs and symptoms occur.
Lower Limb Amputation
An increased risk of lower limb amputations associated with INVOKANA use versus placebo was observed in CANVAS (5.9 vs 2.8 events per 1000 patient-years) and CANVAS-R (7.5 vs 4.2 events per 1000 patient-years), two randomized, placebo-controlled trials evaluating patients with type 2 diabetes mellitus who had either established cardiovascular disease or were at risk for cardiovascular disease. The risk of lower limb amputations was observed at both the 100 mg and 300 mg once daily dosage regimens. The amputation data for CANVAS and CANVAS-R are shown in Tables 3 and 4, respectively.
Amputations of the toe and midfoot (99 out of 140 patients with amputations receiving INVOKANA in the two trials) were the most frequent; however, amputations involving the leg, below and above the knee, were also observed (41 out of 140 patients with amputations receiving INVOKANA in the two trials). Some patients had multiple amputations, some involving both lower limbs. Lower limb infections, gangrene, and diabetic foot ulcers were the most common precipitating medical events leading to the need for an amputation. The risk of amputation was highest in patients with a baseline history of prior amputation, peripheral vascular disease, and neuropathy.
Before initiating INVOKANA, consider factors in the patient history that may predispose to the need for amputations, such as a history of prior amputation, peripheral vascular disease, neuropathy and diabetic foot ulcers. Counsel patients about the importance of routine preventative foot care. Monitor patients receiving INVOKANA for signs and symptoms of infection (including osteomyelitis), new pain or tenderness, sores or ulcers involving the lower limbs, and discontinue INVOKANA if these complications occur.
Volume Depletion
INVOKANA can cause intravascular volume contraction which may sometimes manifest as symptomatic hypotension or acute transient changes in creatinine . There have been post-marketing reports of acute kidney injury which are likely related to volume depletion, some requiring hospitalizations and dialysis, in patients with type 2 diabetes mellitus receiving SGLT2 inhibitors, including INVOKANA. Patients with impaired renal function (eGFR less than 60 mL/min/1.73 m 2 ), elderly patients, or patients on loop diuretics may be at increased risk for volume depletion or hypotension. Before initiating INVOKANA in patients with one or more of these characteristics, assess and correct volume status. Monitor for signs and symptoms of volume depletion after initiating therapy.
Urosepsis and Pyelonephritis
There have been postmarketing reports of serious urinary tract infections including urosepsis and pyelonephritis requiring hospitalization in patients receiving INVOKANA. Treatment with INVOKANA increases the risk for urinary tract infections. Evaluate patients for signs and symptoms of urinary tract infections and treat promptly, if indicated .
Hypoglycemia with
Concomitant Use with Insulin and Insulin Secretagogues Insulin and insulin secretagogues are known to cause hypoglycemia. INVOKANA may increase the risk of hypoglycemia when combined with insulin or an insulin secretagogue . Therefore, a lower dose of insulin or insulin secretagogue may be required to minimize the risk of hypoglycemia when used in combination with INVOKANA.
Necrotizing Fasciitis of the Perineum (Fournier's Gangrene) Reports of necrotizing fasciitis of
the perineum (Fournier's gangrene), a rare but serious and life-threatening necrotizing infection requiring urgent surgical intervention, have been identified in postmarketing surveillance in patients with diabetes mellitus receiving SGLT2 inhibitors, including INVOKANA. Cases have been reported in both females and males. Serious outcomes have included hospitalization, multiple surgeries, and death. Patients treated with INVOKANA presenting with pain or tenderness, erythema, or swelling in the genital or perineal area, along with fever or malaise, should be assessed for necrotizing fasciitis.
If suspected, start treatment immediately with broad-spectrum antibiotics and, if necessary, surgical debridement. Discontinue INVOKANA, closely monitor blood glucose levels, and provide appropriate alternative therapy for glycemic control.
Genital Mycotic Infections
INVOKANA increases the risk of genital mycotic infections. Patients with a history of genital mycotic infections and uncircumcised males were more likely to develop genital mycotic infections . Monitor and treat appropriately.
Hypersensitivity Reactions Hypersensitivity reactions, including angioedema and anaphylaxis, have been reported with
INVOKANA. These reactions generally occurred within hours to days after initiating INVOKANA. If hypersensitivity reactions occur, discontinue use of INVOKANA; treat and monitor until signs and symptoms resolve .
Bone Fracture
An increased risk of bone fracture, occurring as early as 12 weeks after treatment initiation, was observed in patients using INVOKANA in the CANVAS trial . Consider factors that contribute to fracture risk prior to initiating INVOKANA .
Drug Interactions with Invokana
- Table 7: Clinically Significant Drug Interactions with INVOKANA UGT Enzyme Inducers Clinical Impact: UGT enzyme inducers decrease canagliflozin exposure which may reduce the effectiveness of INVOKANA.
- Intervention: For patients with eGFR 60 mL/min/1.73 m 2 or greater, if an inducer of UGTs is administered with INVOKANA, increase the dosage to 200 mg daily in patients currently tolerating INVOKANA 100 mg daily. The total daily dosage may be increased to 300 mg daily in patients currently tolerating INVOKANA 200 mg daily who require additional glycemic control. For patients with eGFR less than 60 mL/min/1.73 m 2, if an inducer of UGTs is administered with INVOKANA, increase the dosage to 200 mg daily in patients currently tolerating INVOKANA 100 mg daily. Consider adding another antihyperglycemic agent in patients who require additional glycemic control .
- Examples: Rifampin, phenytoin, phenobarbital, ritonavir Insulin or Insulin Secretagogues Clinical Impact: The risk of hypoglycemia is increased when INVOKANA is used concomitantly with insulin secretagogues (e.g., sulfonylurea) or insulin.
- Intervention: Concomitant use may require a lower dosage of the insulin secretagogue or insulin to reduce the risk of hypoglycemia.
- Digoxin Clinical Impact: Canagliflozin increases digoxin exposure .
- Intervention: Monitor patients taking INVOKANA with concomitant digoxin for a need to adjust the dosage of digoxin.
- Lithium Clinical Impact: Concomitant use of an SGLT2 inhibitor with lithium may decrease serum lithium concentrations.
- Intervention: Monitor serum lithium concentration more frequently during INVOKANA initiation and dosage changes. Drug/Laboratory Test Interference Positive Urine Glucose Test Clinical Impact: SGLT2 inhibitors increase urinary glucose excretion which will lead to positive urine glucose tests.
- Intervention: Monitoring glycemic control with urine glucose tests is not recommended in patients taking SGLT2 inhibitors. Use alternative methods to monitor glycemic control. Interference with 1,5-anhydroglucitol (1,5-AG) Assay Clinical Impact: Measurements of 1,5-AG are unreliable in assessing glycemic control in patients taking SGLT2 inhibitors.
- Intervention: Monitoring glycemic control with 1,5-AG assay is not recommended in patients taking SGLT2 inhibitors. Use alternative methods to monitor glycemic control. See full prescribing information for information on drug interactions and interference of INVOKANA with laboratory tests.
Pregnancy Safety for Invokana
Pregnancy Risk Summary Based on animal data showing adverse renal effects, INVOKANA is not recommended during the second and third trimesters of pregnancy. Limited data with INVOKANA in pregnant women are not sufficient to determine a drug-associated risk for major birth defects or miscarriage. There are risks to the mother and fetus associated with poorly controlled diabetes in pregnancy.
In animal studies, adverse renal pelvic and tubule dilatations that were not reversible were observed in rats when canagliflozin was administered during a period of renal development corresponding to the late second and third trimesters of human pregnancy, at an exposure 0.5-times the 300 mg clinical dose, based on AUC. The estimated background risk of major birth defects is 6–10% in women with pre-gestational diabetes with a HbA 1C >7 and has been reported to be as high as 20–25% in women with a HbA 1C >10. The estimated background risk of miscarriage for the indicated population is unknown. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2–4% and 15–20%, respectively. Clinical Considerations Disease-associated maternal and/or embryo/fetal risk Poorly controlled diabetes in pregnancy increases the maternal risk for diabetic ketoacidosis, pre-eclampsia, spontaneous abortions, preterm delivery, and delivery complications.
Poorly controlled diabetes increases the fetal risk for major birth defects, stillbirth, and macrosomia related morbidity. Animal Data Canagliflozin dosed directly to juvenile rats from postnatal day (PND) 21 until PND 90 at doses of 4, 20, 65, or 100 mg/kg increased kidney weights and dose dependently increased the incidence and severity of renal pelvic and tubular dilatation at all doses tested. Exposure at the lowest dose was greater than or equal to 0.5-times the 300 mg clinical dose, based on AUC. These outcomes occurred with drug exposure during periods of renal development in rats that correspond to the late second and third trimester of human renal development.
The renal pelvic dilatations observed in juvenile animals did not fully reverse within a 1-month recovery period. In embryo-fetal development studies in rats and rabbits, canagliflozin was administered for intervals coinciding with the first trimester period of organogenesis in humans. No developmental toxicities independent of maternal toxicity were observed when canagliflozin was administered at doses up to 100 mg/kg in pregnant rats and 160 mg/kg in pregnant rabbits during embryonic organogenesis or during a study in which maternal rats were dosed from gestation day (GD) 6 through PND 21, yielding exposures up to approximately 19-times the 300 mg clinical dose, based on AUC.
Pediatric Use of Invokana
Pediatric Use Safety and effectiveness of INVOKANA in pediatric patients under 18 years of age have not been established.
Contraindications for Invokana
is contraindicated in patients with a serious hypersensitivity reaction to INVOKANA, such as anaphylaxis or angioedema . Serious hypersensitivity reaction to INVOKANA
Overdosage Information for Invokana
In the event of an overdose, contact the Poison Control Center. It is also reasonable to employ the usual supportive measures, e.g., remove unabsorbed material from the gastrointestinal tract, employ clinical monitoring, and institute supportive treatment as dictated by the patient's clinical status. Canagliflozin was negligibly removed during a 4-hour hemodialysis session.
Canagliflozin is not expected to be dialyzable by peritoneal dialysis.
Clinical Studies of Invokana
Glycemic Control Trials in Adults with Type 2 Diabetes Mellitus
INVOKANA (canagliflozin) has been studied as monotherapy, in combination with metformin, sulfonylurea, metformin and sulfonylurea, metformin and sitagliptin, metformin and a thiazolidinedione (i.e., pioglitazone), and in combination with insulin (with or without other anti-hyperglycemic agents). The efficacy of INVOKANA was compared to a dipeptidyl peptidase-4 (DPP-4) inhibitor (sitagliptin), both as add-on combination therapy with metformin and sulfonylurea, and a sulfonylurea (glimepiride), both as add-on combination therapy with metformin. INVOKANA was also evaluated in adults 55 to 80 years of age and patients with moderate renal impairment. Monotherapy A total of 584 patients with type 2 diabetes inadequately controlled on diet and exercise participated in a 26-week double-blind, placebo-controlled trial to evaluate the efficacy and safety of INVOKANA. The mean age was 55 years, 44% of patients were men, and the mean baseline eGFR was 87 mL/min/1.73 m 2. Patients taking other antihyperglycemic agents (N=281) discontinued the agent and underwent an 8-week washout followed by a 2-week, single-blind, placebo run-in period.
Patients not taking oral antihyperglycemic agents (N=303) entered the 2-week, single-blind, placebo run-in period directly. After the placebo run-in period, patients were randomized to INVOKANA 100 mg, INVOKANA 300 mg, or placebo, administered once daily for 26 weeks. At the end of treatment, INVOKANA 100 mg and 300 mg once daily resulted in a statistically significant improvement in HbA 1C (p<0.001 for both doses) compared to placebo.
INVOKANA 100 mg and 300 mg once daily also resulted in a greater proportion of patients achieving an HbA 1C less than 7%, in significant reduction in fasting plasma glucose (FPG), in improved postprandial glucose (PPG), and in percent body weight reduction compared to placebo (see Table 10 ). Statistically significant (p<0.001 for both doses) mean changes from baseline in systolic blood pressure relative to placebo were -3.7 mmHg and -5.4 mmHg with INVOKANA 100 mg and 300 mg, respectively. Table 10: Results from 26-Week Placebo-Controlled Clinical Study with INVOKANA as Monotherapy Intent-to-treat population using last observation in study prior to glycemic rescue therapy Efficacy Parameter Placebo (N=192) INVOKANA 100 mg (N=195) INVOKANA 300 mg (N=197) HbA 1C (%) Baseline (mean) 7.97 8.06 8.01 Change from baseline (adjusted mean) 0.14 -0.77 -1.03 Difference from placebo (adjusted mean) (95% CI) Least squares mean adjusted for baseline value and stratification factors -0.91 p<0.001 (-1.09; -0.73) -1.16 (-1.34; -0.99) Percent of Patients Achieving HbA 1C < 7% 21 45 62 Fasting Plasma Glucose (mg/dL) Baseline (mean) 166 172 173 Change from baseline (adjusted mean) 8 -27 -35 Difference from placebo (adjusted mean) (95% CI) -36 (-42; -29) -43 (-50; -37) 2-hour Postprandial Glucose (mg/dL) Baseline (mean) 229 250 254 Change from baseline (adjusted mean) 5 -43 -59 Difference from placebo (adjusted mean) (95% CI) -48 (-59.1; -37.0) -64 (-75.0; -52.9) Body Weight Baseline (mean) in kg 87.5 85.9 86.9 % change from baseline (adjusted mean) -0.6 -2.8 -
Difference from placebo (adjusted mean) (95% CI) -2.2 (-2.9; -1.6) -3.3 (-4.0;
-2.6) Add-on Combination Therapy with Metformin A total of 1,284 patients with type 2 diabetes inadequately controlled on metformin monotherapy (greater than or equal to 2,000 mg/day, or at least 1,500 mg/day if higher dose not tolerated) participated in a 26-week, double-blind, placebo- and active-controlled trial to evaluate the efficacy and safety of INVOKANA in combination with metformin. The mean age was 55 years, 47% of patients were men, and the mean baseline eGFR was 89 mL/min/1.73 m 2. Patients already on the required metformin dose (N=1009) were randomized after completing a 2-week, single-blind, placebo run-in period. Patients taking less than the required metformin dose or patients on metformin in combination with another antihyperglycemic agent (N=275) were switched to metformin monotherapy (at doses described above) for at least 8 weeks before entering the 2-week, single-blind, placebo run-in.
After the placebo run-in period, patients were randomized to INVOKANA 100 mg, INVOKANA 300 mg, sitagliptin 100 mg, or placebo, administered once daily as add-on therapy to metformin. At the end of treatment, INVOKANA 100 mg and 300 mg once daily resulted in a statistically significant improvement in HbA 1C (p<0.001 for both doses) compared to placebo when added to metformin. INVOKANA 100 mg and 300 mg once daily also resulted in a greater proportion of patients achieving an HbA 1C less than 7%, in significant reduction in fasting plasma glucose (FPG), in improved postprandial glucose (PPG), and in percent body weight reduction compared to placebo when added to metformin (see Table 11 ). Statistically significant (p<0.001 for both doses) mean changes from baseline in systolic blood pressure relative to placebo were -5.4 mmHg and -6.6 mmHg with INVOKANA 100 mg and 300 mg, respectively.
Table 11: Results from 26-Week Placebo-Controlled Clinical Study of INVOKANA in Combination with Metformin Intent-to-treat population using last observation in study prior to glycemic rescue therapy Efficacy Parameter Placebo + Metformin (N=183) INVOKANA 100 mg + Metformin (N=368) INVOKANA 300 mg + Metformin (N=367) HbA 1C (%) Baseline (mean) 7.96 7.94 7.95 Change from baseline (adjusted mean) -0.17 -0.79 -0.94 Difference from placebo (adjusted mean) (95% CI) Least squares mean adjusted for baseline value and stratification factors -0.62 p<0.001 (-0.76; -0.48) -0.77 (-0.91; -0.64) Percent of patients achieving HbA 1C < 7% 30 46 58 Fasting Plasma Glucose (mg/dL) Baseline (mean) 164 169 173 Change from baseline (adjusted mean) 2 -27 -38 Difference from placebo (adjusted mean) (95% CI) -30 (-36; -24) -40 (-46; -34) 2-hour Postprandial Glucose (mg/dL) Baseline (mean) 249 258 262 Change from baseline (adjusted mean) -10 -48 -57 Difference from placebo (adjusted mean) (95% CI) -38 (-49; -27) -47 (-58; -36) Body Weight Baseline (mean) in kg 86.7 88.7 85.4 % change from baseline (adjusted mean) -1.2 -3.7 -
Difference from placebo (adjusted mean) (95% CI) -2.5 (-3.1; -1.9) -2.9 (-3.5;
-2.3) Initial Combination Therapy with Metformin A total of 1,186 patients with type 2 diabetes inadequately controlled with diet and exercise participated in a 26-week double-blind, active-controlled, parallel-group, 5-arm, multicenter trial to evaluate the efficacy and safety of initial therapy with INVOKANA in combination with metformin XR. The median age was 56 years, 48% of patients were men, and the mean baseline eGFR was 87.6 mL/min/1.73 m 2. The median duration of diabetes was 1.6 years, and 72% of patients were treatment naïve. After completing a 2-week single-blind placebo run-in period, patients were randomly assigned for a double-blind treatment period of 26 weeks to 1 of 5 treatment groups (Table 12). The metformin XR dose was initiated at 500 mg/day for the first week of treatment and then increased to 1000 mg/day. Metformin XR or matching placebo was up-titrated every 2–3 weeks during the next 8 weeks of treatment to a maximum daily dose of 1500 to 2000 mg/day, as tolerated; about 90% of patients reached 2000 mg/day.
At the end of treatment, INVOKANA 100 mg and INVOKANA 300 mg in combination with metformin XR resulted in a statistically significant greater improvement in HbA 1C compared to their respective INVOKANA doses (100 mg and 300 mg) alone or metformin XR alone. Table 12: Results from 26-Week Active-Controlled Clinical Study of INVOKANA Alone or INVOKANA as Initial Combination Therapy with Metformin Intent-to-treat population Efficacy Parameter Metformin XR (N=237) INVOKANA 100 mg (N=237) INVOKANA 300 mg (N=238) INVOKANA 100 mg + Metformin XR (N=237) INVOKANA 300 mg + Metformin XR (N=237) HbA 1C (%) Baseline (mean) 8.81 8.78 8.77 8.83 8.90 Change from baseline (adjusted mean) There were 121 patients without week 26 efficacy data. Analyses addressing missing data gave consistent results with the results provided in this table. -1.30 -1.37 -1.42 -1.77 -1.78 Difference from canagliflozin 100 mg (adjusted mean) (95% CI) Least squares mean adjusted for covariates including baseline value and stratification factor -0.40 Adjusted p=0.001 for superiority (-0.59, -0.21) Difference from canagliflozin 300 mg (adjusted mean) (95% CI) -0.36 (-0.56, -0.17) Difference from metformin XR (adjusted mean) (95% CI) -0.06 Adjusted p=0.001 for non-inferiority (-0.26, 0.13) -0.11 (-0.31, 0.08) -0.46 (-0.66, -0.27) -0.48 (-0.67, -0.28) Percent of patients achieving HbA 1C < 7% 38 34 39 47 Adjusted p<0.05 51 INVOKANA Compared to Glimepiride, Both as Add-on Combination With Metformin A total of 1,450 patients with type 2 diabetes inadequately controlled on metformin monotherapy (greater than or equal to 2,000 mg/day, or at least 1,500 mg/day if higher dose not tolerated) participated in a 52-week, double-blind, active-controlled trial to evaluate the efficacy and safety of INVOKANA in combination with metformin.
The mean age was 56 years, 52% of patients were men, and the mean baseline eGFR was 90 mL/min/1.73 m 2. Patients tolerating maximally required metformin dose (N=928) were randomized after completing a 2-week, single-blind, placebo run-in period. Other patients (N=522) were switched to metformin monotherapy (at doses described above) for at least 10 weeks, then completed a 2-week single-blind run-in period. After the 2-week run-in period, patients were randomized to INVOKANA 100 mg, INVOKANA 300 mg, or glimepiride (titration allowed throughout the 52-week trial to 6 or 8 mg), administered once daily as add-on therapy to metformin.
As shown in Table 13 and Figure 1, at the end of treatment, INVOKANA 100 mg provided similar reductions in HbA 1C from baseline compared to glimepiride when added to metformin therapy. INVOKANA 300 mg provided a greater reduction from baseline in HbA 1C compared to glimepiride, and the relative treatment difference was -0.12% (95% CI: –0.22; –0.02). As shown in Table 13, treatment with INVOKANA 100 mg and 300 mg daily provided greater improvements in percent body weight change, relative to glimepiride. Table 13: Results from 52–Week Clinical Study Comparing INVOKANA to Glimepiride in Combination with Metformin Intent-to-treat population using last observation in study prior to glycemic rescue therapy Efficacy Parameter INVOKANA 100 mg + Metformin (N=483) INVOKANA 300 mg + Metformin (N=485) Glimepiride (titrated) + Metformin (N=482) HbA 1C (%) Baseline (mean) 7.78 7.79 7.83 Change from baseline (adjusted mean) -0.82 -0.93 -0.81 Difference from glimepiride (adjusted mean) (95% CI) Least squares mean adjusted for baseline value and stratification factors -0.01 INVOKANA + metformin is considered non-inferior to glimepiride + metformin because the upper limit of this confidence interval is less than the pre-specified non-inferiority margin of < 0.3%. (-0.11; 0.09) -0.12 (-0.22; -0.02) Percent of patients achieving HbA 1C < 7% 54 60 56 Fasting Plasma Glucose (mg/dL) Baseline (mean) 165 164 166 Change from baseline (adjusted mean) -24 -28 -18 Difference from glimepiride (adjusted mean) (95% CI) -6 (-10; -2) -9 (-13; -5) Body Weight Baseline (mean) in kg 86.8 86.6 86.6 % change from baseline (adjusted mean) -4.2 -4.7
Difference from glimepiride (adjusted mean) (95% CI) -5.2 p<0.001 (-5.7; -4.7) -5.7
(-6.2; -5.1) Figure 1: Mean HbA 1C Change at Each Time Point (Completers) and at Week 52 Using Last Observation Carried Forward (mITT Population) Figure 1 Add-on Combination Therapy with Sulfonylurea A total of 127 patients with type 2 diabetes inadequately controlled on sulfonylurea monotherapy participated in an 18-week, double-blind, placebo-controlled sub-study to evaluate the efficacy and safety of INVOKANA in combination with sulfonylurea. The mean age was 65 years, 57% of patients were men, and the mean baseline eGFR was 69 mL/min/1.73 m 2. Patients treated with sulfonylurea monotherapy on a stable protocol-specified dose (greater than or equal to 50% maximal dose) for at least 10 weeks completed a 2-week, single-blind, placebo run-in period. After the run-in period, patients with inadequate glycemic control were randomized to INVOKANA 100 mg, INVOKANA 300 mg, or placebo, administered once daily as add-on to sulfonylurea.
As shown in Table 14, at the end of treatment, INVOKANA 100 mg and 300 mg daily provided statistically significant (p<0.001 for both doses) improvements in HbA 1C relative to placebo when added to sulfonylurea. INVOKANA 300 mg once daily compared to placebo resulted in a greater proportion of patients achieving an HbA 1C less than 7%, (33% vs 5%), greater reductions in fasting plasma glucose (-36 mg/dL vs +12 mg/dL), and greater percent body weight reduction (-2.0% vs -0.2%). Table 14: Results from 18-Week Placebo–Controlled Clinical Study of INVOKANA in Combination with Sulfonylurea Intent-to-treat population using last observation in study prior to glycemic rescue therapy Efficacy Parameter Placebo + Sulfonylurea (N=45) INVOKANA 100 mg + Sulfonylurea (N=42) INVOKANA 300 mg + Sulfonylurea (N=40) HbA 1C (%) Baseline (mean) 8.49 8.29 8.28 Change from baseline (adjusted mean) 0.04 -0.70 -0.79 Difference from placebo (adjusted mean) (95% CI) Least squares mean adjusted for baseline value -0.74 p<0.001 (-1.15; -0.33) -0.83 (-1.24; -0.41) Add-on Combination Therapy with Metformin and Sulfonylurea A total of 469 patients with type 2 diabetes inadequately controlled on the combination of metformin (greater than or equal to 2,000 mg/day or at least 1,500 mg/day if higher dose not tolerated) and sulfonylurea (maximal or near-maximal effective dose) participated in a 26-week, double-blind, placebo-controlled trial to evaluate the efficacy and safety of INVOKANA in combination with metformin and sulfonylurea. The mean age was 57 years, 51% of patients were men, and the mean baseline eGFR was 89 mL/min/1.73 m 2. Patients already on the protocol-specified doses of metformin and sulfonylurea (N=372) entered a 2-week, single-blind, placebo run-in period.
Other patients (N=97) were required to be on a stable protocol-specified dose of metformin and sulfonylurea for at least 8 weeks before entering the 2-week run-in period. Following the run-in period, patients were randomized to INVOKANA 100 mg, INVOKANA 300 mg, or placebo, administered once daily as add-on to metformin and sulfonylurea. At the end of treatment, INVOKANA 100 mg and 300 mg once daily resulted in a statistically significant improvement in HbA 1C (p<0.001 for both doses) compared to placebo when added to metformin and sulfonylurea.
INVOKANA 100 mg and 300 mg once daily also resulted in a greater proportion of patients achieving an HbA 1C less than 7%, in a significant reduction in fasting plasma glucose (FPG), and in percent body weight reduction compared to placebo when added to metformin and sulfonylurea (see Table 15 ). Table 15: Results from 26-Week Placebo-Controlled Clinical Study of INVOKANA in Combination with Metformin and Sulfonylurea Intent-to-treat population using last observation in study prior to glycemic rescue therapy Efficacy Parameter Placebo + Metformin and Sulfonylurea (N=156) INVOKANA 100 mg + Metformin and Sulfonylurea (N=157) INVOKANA 300 mg + Metformin and Sulfonylurea (N=156) HbA 1C (%) Baseline (mean) 8.12 8.13 8.13 Change from baseline (adjusted mean) -0.13 -0.85 -1.06 Difference from placebo (adjusted mean) (95% CI) Least squares mean adjusted for baseline value and stratification factors -0.71 p<0.001 (-0.90; -0.52) -0.92 (-1.11; -0.73) Percent of patients achieving A 1C < 7% 18 43 57 Fasting Plasma Glucose (mg/dL) Baseline (mean) 170 173 168 Change from baseline (adjusted mean) 4 -18 -31 Difference from placebo (adjusted mean) (95% CI) -22 (-31; -13) -35 (-44; -25) Body Weight Baseline (mean) in kg 90.8 93.5 93.5 % change from baseline (adjusted mean) -0.7 -2.1 -
Difference from placebo (adjusted mean) (95% CI) -1.4 (-2.1; -0.7) -2.0 (-2.7;
-1.3) Add-on Combination Therapy with Metformin and Sitagliptin A total of 217 patients with type 2 diabetes inadequately controlled on the combination of metformin (greater than or equal to 1,500 mg/day) and sitagliptin 100 mg/day (or equivalent fixed-dose combination) participated in a 26-week, double-blind, placebo-controlled trial to evaluate the efficacy and safety of INVOKANA in combination with metformin and sitagliptin. The mean age was 57 years, 58% of patients were men, 73% of patients were Caucasian, 15% were Asian, and 12% were Black or African-American. The mean baseline eGFR was 90 mL/min/1.73 m 2 and the mean baseline BMI was 32 kg/m 2. The mean duration of diabetes was 10 years.
Eligible patients entered a 2-week, single-blind, placebo run-in period and were subsequently randomized to INVOKANA 100 mg or placebo, administered once daily as add-on to metformin and sitagliptin. Patients with a baseline eGFR of 70 mL/min/1.73 m 2 or greater who were tolerating INVOKANA 100 mg and who required additional glycemic control (fasting finger stick 100 mg/dL or greater at least twice within 2 weeks) were up-titrated to INVOKANA 300 mg. While up-titration occurred as early as Week 4, most (90%) patients randomized to INVOKANA were up-titrated to INVOKANA 300 mg by 6 to 8 weeks.
At the end of 26 weeks, INVOKANA resulted in a statistically significant improvement in HbA 1C (p<0.001) compared to placebo when added to metformin and sitagliptin. Table 16: Results from 26–Week Placebo-Controlled Clinical Study of INVOKANA in Combination with Metformin and Sitagliptin Efficacy Parameter Placebo + Metformin and Sitagliptin (N=108 To preserve the integrity of randomization, all randomized patients were included in the analysis. The patient who was randomized once to each arm was analyzed on INVOKANA. ) INVOKANA + Metformin and Sitagliptin (N=109 ) HbA 1C (%) Baseline (mean) 8.40 8.50 Change from baseline (adjusted mean) -0.03 -0.83 Difference from placebo (adjusted mean) (95% CI) Early treatment discontinuation before week 26, occurred in 11.0% and 24.1% of INVOKANA and placebo patients, respectively.
Estimated using a multiple imputation method modeling a "wash-out" of the treatment effect for patients having missing data who discontinued treatment. Missing data was imputed only at week 26 and analyzed using ANCOVA. -0.81 p<0.001 (-1.11; -0.51) Percent of patients achieving HbA 1C < 7% Patients without week 26 efficacy data were considered as non-responders when estimating the proportion achieving HbA 1c < 7%. 9 28 Fasting Plasma Glucose (mg/dL) Estimated using a multiple imputation method modeling a "wash-out" of the treatment effect for patients having missing data who discontinued treatment. A mixed model for repeated measures was used to analyze the imputed data.
Baseline (mean) 180 185 Change from baseline (adjusted mean) -3 -28 Difference from placebo (adjusted mean) (95% CI) -25 (-39; -11) INVOKANA Compared to Sitagliptin, Both as Add-on Combination Therapy with Metformin and Sulfonylurea A total of 755 patients with type 2 diabetes inadequately controlled on the combination of metformin (greater than or equal to 2,000 mg/day or at least 1,500 mg/day if higher dose not tolerated) and sulfonylurea (near-maximal or maximal effective dose) participated in a 52-week, double-blind, active-controlled trial to compare the efficacy and safety of INVOKANA 300 mg versus sitagliptin 100 mg in combination with metformin and sulfonylurea. The mean age was 57 years, 56% of patients were men, and the mean baseline eGFR was 88 mL/min/1.73 m 2. Patients already on protocol-specified doses of metformin and sulfonylurea (N=716) entered a 2-week single-blind, placebo run-in period. Other patients (N=39) were required to be on a stable protocol-specified dose of metformin and sulfonylurea for at least 8 weeks before entering the 2-week run-in period.
Following the run-in period, patients were randomized to INVOKANA 300 mg or sitagliptin 100 mg as add-on to metformin and sulfonylurea. As shown in Table 17 and Figure 2, at the end of treatment, INVOKANA 300 mg provided greater HbA 1C reduction compared to sitagliptin 100 mg when added to metformin and sulfonylurea (p<0.05). INVOKANA 300 mg resulted in a mean percent change in body weight from baseline of -2.5% compared to +0.3% with sitagliptin 100 mg. A mean change in systolic blood pressure from baseline of -5.06 mmHg was observed with INVOKANA 300 mg compared to +0.85 mmHg with sitagliptin 100 mg.
Table 17: Results from 52-Week Clinical Study Comparing INVOKANA to Sitagliptin in Combination with Metformin and Sulfonylurea Intent-to-treat population using last observation in study prior to glycemic rescue therapy Efficacy Parameter INVOKANA 300 mg + Metformin and Sulfonylurea (N=377) Sitagliptin 100 mg + Metformin and Sulfonylurea (N=378) HbA 1C (%) Baseline (mean) 8.12 8.13 Change from baseline (adjusted mean) -1.03 -0.66 Difference from sitagliptin (adjusted mean) (95% CI) Least squares mean adjusted for baseline value and stratification factors -0.37 INVOKANA + metformin + sulfonylurea is considered non-inferior to sitagliptin + metformin + sulfonylurea because the upper limit of this confidence interval is less than the pre-specified non-inferiority margin of < 0.3%. (-0.50; -0.25) Percent of patients achieving HbA 1C < 7% 48 35 Fasting Plasma Glucose (mg/dL) Baseline (mean) 170 164 Change from baseline (adjusted mean) -30 -6 Difference from sitagliptin (adjusted mean) (95% CI) -24 (-30; -18) Body Weight Baseline (mean) in kg 87.6 89.6 % change from baseline (adjusted mean) -2.5
Difference from sitagliptin (adjusted mean) (95% CI) -2.8 p<0.001 (-3.3; -2.2) Figure
2: Mean HbA 1C Change at Each Time Point (Completers) and at Week 52 Using Last Observation Carried Forward (mITT Population) Figure 2 Add-on Combination Therapy with Metformin and Pioglitazone A total of 342 patients with type 2 diabetes inadequately controlled on the combination of metformin (greater than or equal to 2,000 mg/day or at least 1,500 mg/day if higher dose not tolerated) and pioglitazone (30 or 45 mg/day) participated in a 26-week, double-blind, placebo-controlled trial to evaluate the efficacy and safety of INVOKANA in combination with metformin and pioglitazone. The mean age was 57 years, 63% of patients were men, and the mean baseline eGFR was 86 mL/min/1.73 m 2. Patients already on protocol-specified doses of metformin and pioglitazone (N=163) entered a 2-week, single-blind, placebo run-in period. Other patients (N=181) were required to be on stable protocol-specified doses of metformin and pioglitazone for at least 8 weeks before entering the 2-week run-in period.
Following the run-in period, patients were randomized to INVOKANA 100 mg, INVOKANA 300 mg, or placebo, administered once daily as add-on to metformin and pioglitazone. At the end of treatment, INVOKANA 100 mg and 300 mg once daily resulted in a statistically significant improvement in HbA 1C (p<0.001 for both doses) compared to placebo when added to metformin and pioglitazone. INVOKANA 100 mg and 300 mg once daily also resulted in a greater proportion of patients achieving an HbA 1C less than 7%, in significant reduction in fasting plasma glucose (FPG) and in percent body weight reduction compared to placebo when added to metformin and pioglitazone (see Table 18 ). Statistically significant (p<0.05 for both doses) mean changes from baseline in systolic blood pressure relative to placebo were -4.1 mmHg and -3.5 mmHg with INVOKANA 100 mg and 300 mg, respectively.
Table 18: Results from 26-Week Placebo-Controlled Clinical Study of INVOKANA in Combination with Metformin and Pioglitazone Intent-to-treat population using last observation in study prior to glycemic rescue therapy Efficacy Parameter Placebo + Metformin and Pioglitazone (N=115) INVOKANA 100 mg + Metformin and Pioglitazone (N=113) INVOKANA 300 mg + Metformin and Pioglitazone (N=114) HbA 1C (%) Baseline (mean) 8.00 7.99 7.84 Change from baseline (adjusted mean) -0.26 -0.89 -1.03 Difference from placebo (adjusted mean) (95% CI) Least squares mean adjusted for baseline value and stratification factors -0.62 p<0.001 (-0.81; -0.44) -0.76 (-0.95; -0.58) Percent of patients achieving HbA 1C < 7% 33 47 64 Fasting Plasma Glucose (mg/dL) Baseline (mean) 164 169 164 Change from baseline (adjusted mean) 3 -27 -33 Difference from placebo (adjusted mean) (95% CI) -29 (-37; -22) -36 (-43; -28) Body Weight Baseline (mean) in kg 94.0 94.2 94.4 % change from baseline (adjusted mean) -0.1 -2.8 -
Difference from placebo (adjusted mean) (95% CI) -2.7 (-3.6; -1.8) -3.7 (-4.6;
-2.8) Add-On Combination Therapy with Insulin (With or Without Other Antihyperglycemic Agents) A total of 1,718 patients with type 2 diabetes inadequately controlled on insulin greater than or equal to 30 units/day or insulin in combination with other antihyperglycemic agents participated in an 18-week, double-blind, placebo-controlled substudy of a cardiovascular trial to evaluate the efficacy and safety of INVOKANA in combination with insulin. The mean age was 63 years, 66% of patients were men, and the mean baseline eGFR was 75 mL/min/1.73 m 2. Patients on basal, bolus, or basal/bolus insulin for at least 10 weeks entered a 2-week, single-blind, placebo run-in period. Approximately 70% of patients were on a background basal/bolus insulin regimen.
After the run-in period, patients were randomized to INVOKANA 100 mg, INVOKANA 300 mg, or placebo, administered once daily as add-on to insulin. The mean daily insulin dose at baseline was 83 units, which was similar across treatment groups. At the end of treatment, INVOKANA 100 mg and 300 mg once daily resulted in a statistically significant improvement in HbA 1C (p<0.001 for both doses) compared to placebo when added to insulin.
INVOKANA 100 mg and 300 mg once daily also resulted in a greater proportion of patients achieving an HbA 1C less than 7%, in significant reductions in fasting plasma glucose (FPG), and in percent body weight reductions compared to placebo (see Table 19 ). Statistically significant (p<0.001 for both doses) mean changes from baseline in systolic blood pressure relative to placebo were -2.6 mmHg and -4.4 mmHg with INVOKANA 100 mg and 300 mg, respectively. Table 19: Results from 18-Week Placebo-Controlled Clinical Study of INVOKANA in Combination with Insulin ≥ 30 Units/Day (With or Without Other Oral Antihyperglycemic Agents) Intent-to-treat population using last observation in study prior to glycemic rescue therapy Efficacy Parameter Placebo + Insulin (N=565) INVOKANA 100 mg + Insulin (N=566) INVOKANA 300 mg + Insulin (N=587) HbA 1C (%) Baseline (mean) 8.20 8.33 8.27 Change from baseline (adjusted mean) 0.01 -0.63 -0.72 Difference from placebo (adjusted mean) (95% CI) Least squares mean adjusted for baseline value and stratification factors -0.65 p<0.001 (-0.73; -0.56) -0.73 (-0.82; -0.65) Percent of patients achieving HbA 1C < 7% 8 20 25 Fasting Plasma Glucose (mg/dL) Baseline 169 170 168 Change from baseline (adjusted mean) 4 -19 -25 Difference from placebo (adjusted mean) (97.5% CI) -23 (-29; -16) -29 (-35; -23) Body Weight Baseline (mean) in kg 97.7 96.9 96.7 % change from baseline (adjusted mean) 0.1 -1.8 -
Difference from placebo (adjusted mean) (97.5% CI) -1.9 (-2.2; -1.6) -2.4 (-2.7;
-2.1) Study in Patients Ages 55 to 80 A total of 714 type 2 diabetes patients ages 55 to 80 years and inadequately controlled on current diabetes therapy (either diet and exercise alone or in combination with oral or parenteral agents) participated in a 26-week, double-blind, placebo-controlled trial to evaluate the efficacy and safety of INVOKANA in combination with current diabetes treatment. The mean age was 64 years, 55% of patients were men, and the mean baseline eGFR was 77 mL/min/1.73 m 2. Patients were randomized in a 1:1:1 ratio to the addition of INVOKANA 100 mg, INVOKANA 300 mg, or placebo, administered once daily. At the end of treatment, INVOKANA provided statistically significant improvements from baseline relative to placebo in HbA 1C (p<0.001 for both doses) of -0.57% (95% CI: -0.71%; -0.44%) for INVOKANA 100 mg and -0.70% (95% CI: -0.84%; -0.57%) for INVOKANA 300 mg . Glycemic Control in Patients with Moderate Renal Impairment A total of 269 patients with type 2 diabetes and a baseline eGFR of 30 mL/min/1.73 m 2 to less than 50 mL/min/1.73 m 2 inadequately controlled on current diabetes therapy participated in a 26-week, double-blind, placebo-controlled clinical trial to evaluate the efficacy and safety of INVOKANA in combination with current diabetes treatment (diet or antihyperglycemic agent therapy, with 95% of patients on insulin and/or sulfonylurea). The mean age was 68 years, 61% of patients were men, and the mean baseline eGFR was 39 mL/min/1.73 m 2. Patients were randomized in a 1:1:1 ratio to the addition of INVOKANA 100 mg, INVOKANA 300 mg, or placebo, administered once daily.
At the end of treatment, INVOKANA 100 mg and INVOKANA 300 mg daily provided greater reductions in HbA 1C relative to placebo (-0.30% and -0.40%,, respectively) .
Cardiovascular Outcomes in Patients with Type 2 Diabetes Mellitus and Atherosclerotic Cardiovascular
Disease The CANVAS and CANVAS-R trials were multicenter, multi-national, randomized, double-blind parallel group, with similar inclusion and exclusion criteria. Patients eligible for enrollment in both CANVAS and CANVAS-R trials were: 30 years of age or older and had established, stable, cardiovascular, cerebrovascular, peripheral artery disease (66% of the enrolled population) or were 50 years of age or older and had two or more other specified risk factors for cardiovascular disease (34% of the enrolled population). The integrated analysis of the CANVAS and CANVAS-R trials compared the risk of Major Adverse Cardiovascular Event (MACE) between canagliflozin and placebo when these were added to and used concomitantly with standard of care treatments for diabetes and atherosclerotic cardiovascular disease. The primary endpoint, MACE, was the time to first occurrence of a three-part composite outcome which included cardiovascular death, non-fatal myocardial infarction and non-fatal stroke.
In CANVAS, patients were randomly assigned 1:1:1 to canagliflozin 100 mg, canagliflozin 300 mg, or matching placebo. In CANVAS-R, patients were randomly assigned 1:1 to canagliflozin 100 mg or matching placebo, and titration to 300 mg was permitted at the investigator's discretion (based on tolerability and glycemic needs) after Week 13. Concomitant antidiabetic and atherosclerotic therapies could be adjusted, at the discretion of investigators, to ensure participants were treated according to the standard care for these diseases. A total of 10,134 patients were treated (4,327 in CANVAS and 5,807 in CANVAS-R; total of 4,344 randomly assigned to placebo and 5,790 to canagliflozin) for a mean exposure duration of 149 weeks (223 weeks in CANVAS and 94 weeks in CANVAS-R). Approximately 78% of the trial population was Caucasian, 13% was Asian, and 3% was Black.
The mean age was 63 years and approximately 64% were male. The mean HbA 1C at baseline was 8.2% and mean duration of diabetes was 13.5 years with 70% of patients having had diabetes for 10 years or more. Approximately 31%, 21% and 17% reported a past history of neuropathy, retinopathy and nephropathy, respectively, and the mean eGFR 76 mL/min/1.73 m 2. At baseline, patients were treated with one (19%) or more (80%) antidiabetic medications including metformin (77%), insulin (50%), and sulfonylurea (43%). At baseline, the mean systolic blood pressure was 137 mmHg, the mean diastolic blood pressure was 78 mmHg, the mean LDL was 89 mg/dL, the mean HDL was 46 mg/dL, and the mean urinary albumin to creatinine ratio (UACR) was 115 mg/g.
At baseline, approximately 80% of patients were treated with renin angiotensin system inhibitors, 53% with beta-blockers, 13% with loop diuretics, 36% with non-loop diuretics, 75% with statins, and 74% with antiplatelet agents (mostly aspirin). During the trial, investigators could modify anti-diabetic and cardiovascular therapies to achieve local standard of care treatment targets with respect to blood glucose, lipid, and blood pressure. More patients receiving canagliflozin compared to placebo initiated anti-thrombotics (5.2% vs 4.2%) and statins (5.8% vs 4.8%) during the trial. For the primary analysis, a stratified Cox proportional hazards model was used to test for non-inferiority against a pre-specified risk margin of 1.3 for the hazard ratio of MACE. In the integrated analysis of CANVAS and CANVAS-R trials, canagliflozin reduced the risk of first occurrence of MACE. The estimated hazard ratio (95% CI) for time to first MACE was 0.86. Refer to Table 20. Vital status was obtained for 99.6% of patients across the trials.
The Kaplan-Meier curve depicting time to first occurrence of MACE is shown in Figure 3. Table 20: Treatment Effect for the Primary Composite Endpoint, MACE, and its Components in the Integrated Analysis of CANVAS and CANVAS-R studies Intent-To-Treat Analysis Set Placebo N=4347(%) Canagliflozin N=5795 (%) Hazard ratio (95% C.I.) Stratified Cox-proportional hazards model with treatment as a factor and stratified by study and by prior CV disease Composite of cardiovascular death, non-fatal myocardial infarction, non-fatal stroke (time to first occurrence) P-value for superiority (2-sided) = 0.0158, Number and percentage of first events, Due to pooling of unequal randomization ratios, Cochran-Mantel-Haenszel weights were applied to calculate percentages 426 585 0.86 Non-fatal myocardial infarction, 159 215 0.85 Non-fatal Stroke, 116 158 0.90 Cardiovascular Death, 185 268 0.87 Figure 3: Time to First Occurrence of MACE Figure 3
Renal and Cardiovascular Outcomes in Patients with Diabetic Nephropathy and Albuminuria
The Canagliflozin and Renal Events in Diabetes with Established Nephropathy Clinical Evaluation Trial (CREDENCE) was a multinational, randomized, double-blind, placebo-controlled trial comparing canagliflozin with placebo in patients with type 2 diabetes mellitus, an eGFR ≥ 30 to < 90 mL/min/1.73 m 2 and albuminuria (urine albumin/creatinine > 300 to ≤ 5000 mg/g) who were receiving standard of care including a maximum-tolerated, labeled daily dose of an angiotensin-converting enzyme inhibitor (ACEi) or angiotensin receptor blocker (ARB). The primary objective of CREDENCE was to assess the efficacy of canagliflozin relative to placebo in reducing the composite endpoint of end stage kidney disease (ESKD), doubling of serum creatinine, and renal or CV death. Patients were randomized to receive canagliflozin 100 mg (N=2,202) or placebo (N=2,199) and treatment was continued until the initiation of dialysis or renal transplantation. The median follow-up duration for the 4,401 randomized subjects was 137 weeks.
Vital status was obtained for 99.9% of subjects. The population was 67% White, 20% Asian, and 5% Black; 32% were of Hispanic or Latino ethnicity. The mean age was 63 years and 66% were male.
At randomization, the mean HbA 1c was 8.3%, the median urine albumin/creatinine was 927 mg/g, the mean eGFR was 56.2 mL/min/1.73 m 2, 50% had prior CV disease, and 15% reported a history of heart failure. The most frequent antihyperglycemic agents (AHA) medications used at baseline were insulin (66%), biguanides (58%), and sulfonylureas (29%). Nearly all subjects (99.9%) were on ACEi or ARB at randomization, approximately 60% were taking an anti-thrombotic agent (including aspirin), and 69% were on a statin. The primary composite endpoint in the CREDENCE study was the time to first occurrence of ESKD (defined as an eGFR < 15 mL/min/1.73 m 2, initiation of chronic dialysis or renal transplant), doubling of serum creatinine, and renal or CV death.
Canagliflozin 100 mg significantly reduced the risk of the primary composite endpoint based on a time-to-event analysis (see Figure 4 ). The treatment effect reflected a reduction in progression to ESKD, doubling of serum creatinine and cardiovascular death as shown in Table 21 and Figure 4. There were few renal deaths during the trial. Canagliflozin 100 mg also significantly reduced the risk of hospitalization for heart failure. Table 21: Analysis of Primary Endpoint (including the Individual Components) and Secondary Endpoints from the CREDENCE Study Placebo canagliflozin Endpoint N=2,199 (%) Event Rate Event rate per 100 patient-years.
N=2,202 (%) Event Rate HR Hazard ratio (canagliflozin compared to placebo), 95% CI and p-value are estimated using a stratified Cox proportional hazards model including treatment as the explanatory variable and stratified by screening eGFR (≥ 30 to < 45, ≥ 45 to < 60, ≥ 60 to < 90 mL/min/1.73 m 2). HR is not presented for renal death due to the small number of events in each group. (95% CI) Intent-To-Treat Analysis Set (time to first occurrence) The individual components do not represent a breakdown of the composite outcomes, but rather the total number of subjects experiencing an event during the course of the study. Primary Composite Endpoint (ESKD, doubling of serum creatinine, renal death, or CV death) 340 6.1 245 4.3 0.70 P-value <0.0001 ESKD 165 2.9 116 2.0 0.68 Doubling of serum creatinine 188 3.4 118 2.1 0.60 Renal death 5 0.1 2
CV death 140 2.4 110 1.9 0.78 CV death or hospitalization for
heart failure 253 4.5 179 3.1 0.69 P-value <0.001 CV death, non-fatal myocardial infarction or non-fatal stroke 269 4.9 217 3.9 0.80 P-value <0.02 Non-fatal myocardial infarction 87 1.6 71 1.3 0.81 Non-fatal stroke 66 1.2 53 0.9 0.80 Hospitalization for heart failure 141 2.5 89 1.6 0.61 ESKD, doubling of serum creatinine or renal death 224 4.0 153 2.7 0.66 The Kaplan-Meier curve (Figure 4) shows time to first occurrence of the primary composite endpoint of ESKD, doubling of serum creatinine, renal death, or CV death. The curves begin to separate by Week 52 and continue to diverge thereafter. Figure 4: CREDENCE: Time to First Occurrence of the Primary Composite Endpoint Figure 4
Drug information sourced from the FDA. This content is for informational purposes only and does not constitute medical advice. Consult a healthcare professional before making any medication decisions.
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