Norditropin Drug Information

Pediatric Patients NORDITROPIN is indicated for the treatment of pediatric patients with: • growth failure due to inadequate secretion of endogenous growth hormone (GH), • short stature associated with Noonan syndrome, • short stature associated with Turner syndrome, • short stature born small for gestational age (SGA) with no catch-up growth by age 2 years to 4 years of age, • Idiopathic Short Stature (ISS), height standard deviation score (SDS) <-2.25, and associated with growth rates unlikely to permit attainment of adult height in the normal range, • growth failure due to Prader-Willi syndrome (PWS).

Adult Patients NORDITROPIN is indicated for the replacement of endogenous GH in adults with growth hormone deficiency (GHD)

Administration and Use Instructions • Therapy with NORDITROPIN should be supervised by a physician who is experienced in the diagnosis and management of patients with the conditions for which NORDITROPIN is indicated. • Fundoscopic examination should be performed routinely before initiating treatment with NORDITROPIN to exclude preexisting papilledema, and periodically thereafter. • Administer NORDITROPIN by subcutaneous injection to the back of the upper arm, abdomen, buttocks, or thigh with regular rotation of injection sites to avoid lipoatrophy. • Inspect visually for particulate matter and discoloration. NORDITROPIN should be clear and colorless. If the solution is cloudy or contains particulate matter do not use. • Instructions for delivering the dosage are provided in the PATIENT INFORMATION and INSTRUCTIONS FOR USE leaflets enclosed with the NORDITROPIN FlexPro prefilled pen.

Pediatric Dosage •

Individualize dosage for each patient based on the growth response. • Divide the calculated weekly NORDITROPIN dosage into equal doses given either 6, or 7 days per week. • The recommended weekly dose in milligrams (mg) per kilogram (kg) of body weight for pediatric patients is: o Pediatric GH Deficiency: 0.17 mg/kg/week to 0.24 mg/kg/week (0.024 to 0.034 mg/kg/day) o Noonan Syndrome: Up to 0.46 mg/kg/week (up to 0.066 mg/kg/day) o Turner Syndrome: Up to 0.47 mg/kg/week (up to 0.067 mg/kg/day) o Small for Gestational Age (SGA): Up to 0.47 mg/kg/week (up to 0.067 mg/kg/day) • In very short pediatric patients, HSDS less than -3, and older pubertal pediatric patients consider initiating treatment with a larger dose of NORDITROPIN (up to 0.067 mg/kg/day). Consider a gradual reduction in dosage if substantial catch-up growth is observed during the first few years of therapy. In pediatric patients less than 4 years of age with less severe short stature, baseline HSDS values between -2 and -3, consider initiating treatment at 0.033 mg/kg/day and titrate the dose as needed. o Idiopathic Short Stature: Up to 0.47 mg/kg/week (up to 0.067 mg/kg/day) o Prader-Willi Syndrome: 0.24 mg/kg/week (0.034 mg/kg/day) • Assess compliance and evaluate other causes of poor growth such as hypothyroidism, under-nutrition, advanced bone age and antibodies to recombinant human growth hormone if patients experience failure to increase height velocity, particularly during the first year of treatment. • Discontinue NORDITROPIN for stimulation of linear growth once epiphyseal fusion has occurred.

Adult Dosage • Patients who were treated with somatropin for GH deficiency in childhood and whose epiphyses are closed should be reevaluated before continuation of somatropin for GH deficient adults. • Consider using a lower starting dose and smaller dose increment increases for geriatric patients as they may be at increased risk for adverse reactions with NORDITROPIN than younger individuals. • Estrogen-replete women and patients receiving oral estrogen may require higher doses. • Administer the prescribed dose daily. • Either of two NORDITROPIN dosing regimens may be used: o Non-weight based • Initiate NORDITROPIN with a dose of approximately 0.2 mg/day (range, 0.15 mg/day to 0.3 mg/day) and increase the dose every 1-2 months by increments of approximately 0.1 mg/day to 0.2 mg/day, according to individual patient requirements based on the clinical response and serum insulin-like growth factor 1 (IGF-1) concentrations. • Decrease the dose as necessary on the basis of adverse reactions and/or serum IGF-1 concentrations above the age- and gender-specific normal range. • Maintenance dosages will vary considerably from person to person, and between male and female patients. o Weight-based • Initiate NORDITROPIN at 0.004 mg/kg daily and increase the dose according to individual patient requirements to a maximum of 0.016 mg/kg daily. • Use the patient’s clinical response, adverse reactions, and determination of age- and gender-adjusted serum IGF-1 concentrations as guidance in dose titration. • Not recommended for obese patients as they are more likely to experience adverse reactions with this regimen

Clinical Trials Experience

Because clinical trials are conducted under varying conditions, adverse reaction rates observed during the clinical trials performed with one somatropin product cannot always be directly compared to the rates observed during the clinical trials performed with another somatropin product, and may not reflect the adverse reaction rates observed in practice. Pediatric Patients Growth Failure due to Inadequate Secretion of Endogenous Growth Hormone In one randomized, open label, clinical study the most frequent adverse reactions were headache, pharyngitis, otitis media and fever. There were no clinically significant differences between the three doses assessed in the study (0.025, 0.05 and 0.1 mg/kg/day).

After the two-year study, patients continued NORDITROPIN treatment until final height was achieved; randomized dose groups were not maintained. Adverse reactions were later collected retrospectively from 18 pediatric patients; total follow-up was 11 years. An additional 6 pediatric patients were not randomized, but followed the protocol and are included in this assessment of adverse reactions.

The most frequent adverse reactions were upper respiratory infection, gastroenteritis, ear infection, and influenza. Cardiac disorders was the system organ class with the second most adverse reactions reported. The following additional adverse reactions also occurred once: insulin resistance and panic reaction for the 0.033 mg/kg/day dose group; injection site pruritus, bone development abnormal, depression, and self-injurious ideation in the 0.066 mg/kg/day dose group.

Headache occurred in 2 cases in the 0.066 mg/kg/day dose group. Short Stature Associated with Turner Syndrome In two clinical studies in pediatric patients that were treated until final height with various doses of NORDITROPIN, the most frequently reported adverse reactions were influenza-like illness, otitis media, upper respiratory tract infection, otitis externa, gastroenteritis, eczema and, impaired fasting glucose. Adverse reactions in study 1 were most frequent in the highest dose groups.

Three patients in study 1 had excessive growth of hands and/or feet in the high dose groups. Two patients in study 1 had a serious adverse reaction of exacerbation of preexisting scoliosis in the 0.045 mg/kg/day group. The most frequently reported adverse reactions were influenza-like illness, upper respiratory tract infection, bronchitis, gastroenteritis, abdominal pain, otitis media, pharyngitis, arthralgia, headache, gynecomastia, and increased sweating.

In addition, small increases in mean fasting blood glucose and insulin levels after 1 and 2 years of NORDITROPIN treatment appeared to be dose-dependent. Adverse reactions were otitis media, arthralgia and impaired glucose tolerance. Arthralgia and transiently impaired glucose tolerance were reported in the 0.067 mg/kg/day treatment group.

Idiopathic Short Stature In two open-label clinical studies with another somatropin product in pediatric patients, the most common adverse reactions were upper respiratory tract infections, influenza, tonsillitis, nasopharyngitis, gastroenteritis, headaches, increased appetite, pyrexia, fracture, altered mood, and arthralgia. Growth Failure Due to Prader-Willi Syndrome In two clinical studies in pediatric patients with PWS carried out with another somatropin product, the following adverse reactions were reported: edema, aggressiveness, arthralgia, benign intracranial hypertension, hair loss, headache, and myalgia. Adult Patients Adults with Growth Hormone Deficiency Adverse reactions with an incidence of ≥5% occurring in patients with AO GHD during the 6 month placebo-controlled portion of a clinical trial for NORDITROPIN are presented in Table 1.

Table 1 – Adverse Reactions with ≥5% Overall Incidence in Adult Onset Growth Hormone Deficient Patients Treated with NORDITROPIN During a Six Month Placebo-Controlled Clinical Trial 0 5

Postmarketing Experience

The following adverse reactions have been identified during post-approval use of somatropin or NORDITROPIN. Because these adverse reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Immune system disorders — Serious systemic hypersensitivity reactions including anaphylactic reactions and angioedema Skin — Increase in size or number of cutaneous nevi Endocrine disorders — Hypothyroidism - Gynecomastia Metabolism and nutrition disorders — Hyperglycemia Musculoskeletal and connective tissue disorders — Slipped capital femoral epiphysis and osteonecrosis (including Legg-Calvé-Perthes disease) have been reported in pediatric patients treated with growth hormone.

Cases have been reported with NORDITROPIN. Investigations — Increase in blood alkaline phosphatase level — Decrease in serum thyroxin (T4) levels Gastrointestinal — Pancreatitis Neoplasm — Leukemia has been reported in a small number of GH deficient children treated with somatropin, somatrem (methionylated rhGH) and GH of pituitary origin

• Table 2 includes a list of drugs with clinically important drug interactions when administered concomitantly with NORDITROPIN and instructions for preventing or managing them. Table 2: Clinically Important Drug Interactions with NORDITROPIN Glucocorticoids Clinical Impact: Microsomal enzyme 11β-hydroxysteroid dehydrogenase type 1 (11βHSD-1) is required for conversion of cortisone to its active metabolite, cortisol, in hepatic and adipose tissue. NORDITROPIN inhibits 11βHSD-1. Intervention: Patients treated with glucocorticoid replacement for hypoadrenalism may require an increase in their maintenance or stress doses following initiation of NORDITROPIN. Patients receiving oral estrogen replacement may require greater NORDITROPIN dosages. Insulin and/or Other Hypoglycemic Agents Clinical Impact: Treatment with NORDITROPIN may decrease insulin sensitivity, particularly at higher doses. Intervention: Patients with diabetes mellitus may require adjustment of their doses of insulin and/or other hypoglycemic agents.
• Glucocorticoids: Patients treated with glucocorticoid for hypoadrenalism may require an increase in their maintenance or stress doses following initiation of NORDITROPIN
• Pharmacologic Glucocorticoid Therapy and Supraphysiologic Glucocorticoid Treatment: Adjust glucocorticoid replacement dosing in pediatric patients receiving glucocorticoid treatment to avoid both hypoadrenalism and an inhibitory effect on growth.
• Cytochrome P450-Metabolized Drugs: NORDITROPIN may alter the clearance. Monitor carefully if used with NORDITROPIN
• Oral Estrogen: Larger doses of NORDITROPIN may be required
• Insulin and/or Other Hypoglycemic Agents: Dose adjustment of insulin or hypoglycemic agent may be required

Pregnancy Risk Summary Limited available data with somatropin use in pregnant women are insufficient to determine a drug-associated risk of adverse developmental outcomes. In animal reproduction studies, there was no evidence of fetal or neonatal harm when pregnant rats were administered subcutaneous NORDITROPIN during organogenesis or during lactation at doses approximately 10-times higher than the maximal clinical dose of 0.016 mg/kg, based on body surface area (see Data). The estimated background risk of birth defects and 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. Data Animal Data In an embryo-fetal development study, NORDITROPIN was administered via subcutaneous injection to pregnant rats from gestation Day 6 to 17, corresponding with the period of organogenesis. NORDITROPIN did not adversely affect fetal viability or developmental outcomes at maternal doses that were approximately 10-times the clinical dose of 0.016 mg/kg, based on body surface area.

In a pre- and post-natal development study in pregnant rats, NORDITROPIN was administered from gestation Day 17 through lactation Day 21 (weaning). No adverse developmental effects were observed in the offspring at doses up to 1.1 mg/kg (approximately 10 times the clinical dose of 0.016 mg/kg, based on body surface area).

Pediatric Use Safety and effectiveness of NORDITROPIN in pediatric patients have been established in growth failure due to inadequate secretion of endogenous growth hormone, short stature associated with Noonan syndrome, short stature associated with Turner syndrome, short stature in children born small for gestational age (SGA) with no catch-up growth by age 2 years to 4 years of age, idiopathic short stature (ISS), and growth failure due to Prader-Willi syndrome (PWS). Growth Failure due to Inadequate Secretion of Endogenous Growth Hormone Safety and effectiveness of NORDITROPIN have been established in pediatric patients with growth failure due to growth hormone deficiency in a multi-center, prospective, randomized, open-label, dose-response study in 111 pediatric patients conducted for a two-year period. Short Stature Associated with Noonan Syndrome Safety and effectiveness of NORDITROPIN have been established in pediatric patients with Noonan syndrome in a prospective, open-label, randomized, parallel group study in 21 pediatric patients conducted for 2 years.

Short Stature Associated with Turner Syndrome Safety and effectiveness of NORDITROPIN have been established in pediatric patients with short stature associated with Turner syndrome in two randomized, parallel group, open-label, multicenter studies in 87 pediatric patients. Short Stature in Pediatric Patients Born Small for Gestational Age (SGA) with No Catch-up Growth by Age 2 Years to 4 Years of Age Safety and effectiveness of NORDITROPIN have been established in pediatric patients with short stature born SGA with no catch-up growth in a multi-center, randomized, double-blind, two-arm study to final height in 53 pediatric patients and in a randomized study of 84 prepubertal, non-GHD, Japanese pediatric patients. Idiopathic Short Stature (ISS) Safety and effectiveness of NORDITROPIN have been established in pediatric patients with ISS based on data from a randomized, open-label clinical study with another somatropin product in 105 pediatric patients.

Growth Failure Due to Prader-Willi Syndrome (PWS) Safety and effectiveness of NORDITROPIN have been established in pediatric patients with growth failure due to Prader-Willi Syndrome based on data from two randomized, open label, controlled clinical trials with another somatropin product in pediatric patients. There have been reports of sudden death after initiating therapy with somatropin in pediatric patients with Prader-Willi syndrome who had one or more of the following risk factors: severe obesity, history of upper airway obstruction or sleep apnea, or unidentified respiratory infection. Male patients with one or more of these factors may be at greater risk than females.

Patients with Prader-Willi syndrome should be evaluated for signs of upper airway obstruction and sleep apnea before initiation of treatment with somatropin.

• NORDITROPIN is contraindicated in patients with:
• Acute critical illness after open heart surgery, abdominal surgery or multiple accidental trauma, or those with acute respiratory failure due to the risk of increased mortality with use of pharmacologic doses of somatropin.
• Pediatric patients with Prader-Willi syndrome who are severely obese, have a history of upper airway obstruction or sleep apnea, or have severe respiratory impairment due to the risk of sudden death.
• Active Malignancy.
• Hypersensitivity to NORDITROPIN or any of its excipients. Systemic hypersensitivity reactions have been reported with postmarketing use of somatropins.
• Active proliferative or severe non-proliferative diabetic retinopathy.
• Pediatric patients with closed epiphyses.
• Acute Critical Illness
• Active Malignancy
• Hypersensitivity to somatropin or excipients

Short-term overdosage could lead initially to hypoglycemia and subsequently to hyperglycemia. Overdose with somatropin is likely to cause fluid retention. Long-term overdosage could result in signs and symptoms of gigantism and/or acromegaly consistent with the known effects of excess growth hormone.