Fetroja Drug Information

Clinical Trials 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 rates in the clinical trials of another drug and may not reflect the rates observed in practice. Complicated Urinary Tract Infections (cUTIs), Including Pyelonephritis FETROJA was evaluated in an active-controlled, randomized clinical trial in patients with cUTI, including pyelonephritis (Trial 1). In this trial, 300 patients received FETROJA 2 grams every 8 hours infused over 1 hour (or a renally-adjusted dose), and 148 patients were treated with imipenem/cilastatin 1gram/1gram every 8 hours infused over 1 hour (or a renally-adjusted dose). The median age of treated patients across treatment arms was 65 years (range 18 to 93 years), with approximately 53% of patients aged greater than or equal to 65. Approximately 96% of patients were White, most were from Europe, and 55% were female. Patients across treatment arms received treatment for a median duration of 9 days.

Serious Adverse Reactions and Adverse Reactions Leading to Discontinuation In Trial 1, a total of 14/300 (4.7%) cUTI patients treated with FETROJA and 12/148 (8.1%) of cUTI patients treated with imipenem/cilastatin experienced serious adverse reactions. One death (0.3%) occurred in 300 patients treated with FETROJA as compared to none treated with imipenem/cilastatin. Discontinuation of treatment due to any adverse reaction occurred in 5/300 (1.7%) of patients treated with FETROJA and 3/148 (2.0%) of patients treated with imipenem/cilastatin.

Specific adverse reactions leading to treatment discontinuation in patients who received FETROJA included diarrhea (0.3%), drug hypersensitivity (0.3%), and increased hepatic enzymes (0.3%). Common Adverse Reactions Table 4 lists the most common selected adverse reactions occurring in ≥ 2% of cUTI patients receiving FETROJA in Trial 1. Table 4 Selected Adverse Reactions Occurring in ≥ 2% of cUTI Patients Receiving FETROJA in Trial 1 Adverse Reaction FETROJA 2 grams IV over 1 hour every 8 hours (with dosing adjustment based on renal function). (N = 300) Imipenem/Cilastatin 1 gram IV over 1 hour every 8 hours (with dosing adjustment based on renal function and body weight). (N = 148) cUTI = complicated urinary tract infection. Diarrhea 4% 6% Infusion site reactions Infusion site reactions include infusion site erythema, inflammation, pain, pruritus, injection site pain, and phlebitis. 4% 5% Constipation 3% 4% Rash Rash includes rash macular, rash maculopapular, erythema, skin irritation. 3% < 1% Candidiasis Candidiasis includes oral or vulvovaginal candidiasis, candiduria. 2% 3% Cough 2% < 1% Elevations in liver tests Elevations in liver tests include alanine aminotransferase, aspartate aminotransferase, gamma-glutamyl transferase, blood alkaline phosphatase, hepatic enzyme increased. 2% < 1% Headache 2% 5% Hypokalemia Hypokalemia includes blood potassium decreased. 2% 3% Nausea 2% 4% Vomiting 2% 1% Other Adverse Reactions of FETROJA in the cUTI Patients (Trial 1) The following selected adverse reactions were reported in FETROJA-treated cUTI patients at a rate of less than 2% in Trial 1: Blood and lymphatic disorders : thrombocytosis Cardiac disorders : congestive heart failure, bradycardia, atrial fibrillation Gastrointestinal disorders : abdominal pain, dry mouth, stomatitis General system disorders : pyrexia, peripheral edema Hepatobiliary disorders : cholelithiasis, cholecystitis, gallbladder pain Immune system disorders : drug hypersensitivity Infections and infestations : C. difficile infection Laboratory investigations : prolonged prothrombin time (PT) and prothrombin time international normalized ratio (PT-INR), red blood cells urine positive, creatine phosphokinase increase Metabolism and nutrition disorders : decreased appetite, hypocalcemia, fluid overload Nervous system disorders : dysgeusia, seizure Respiratory, thoracic, and mediastinal disorders : dyspnea, pleural effusion Skin and subcutaneous tissue disorders : pruritus Psychiatric disorders : insomnia, restlessness Hospital-acquired Bacterial Pneumonia and Ventilator-associated Bacterial Pneumonia (HABP/VABP) FETROJA was evaluated in an active-controlled clinical trial in patients with HABP/VABP (Trial 2). In this trial, 148 patients received FETROJA 2 grams every 8 hours infused over 3 hours, and 150 patients received meropenem 2 grams every 8 hours infused over 3 hours. Doses of study treatments were adjusted based on renal function.

The median age was 67 years, approximately 59% of patients were 65 years of age and older, 69% were male, and 68% were White. Overall, approximately 60% were ventilated at randomization, including 41% with VABP and 14% with ventilated HABP. The mean Acute Physiology And Chronic Health Evaluation (APACHE II) score was 16. All patients received empiric treatment for Gram-positive organisms with linezolid for at least 5 days. Serious Adverse Reactions and Adverse Reactions Leading to Discontinuation In Trial 2, serious adverse reactions occurred in 54/148 (36.5%) HABP/VABP patients treated with FETROJA and 45/150 (30%) of HABP/VABP patients treated with meropenem.

Adverse reactions leading to death were reported in 39/148 (26.4%) patients treated with FETROJA and 35/150 (23.3%) patients treated with meropenem. Adverse reactions leading to discontinuation of treatment occurred in 12/148 (8.1%) of patients treated with FETROJA and 14/150 (9.3%) of patients treated with meropenem. The most common adverse reactions leading to discontinuation in both treatment groups were elevated liver tests.

Common Adverse Reactions Table 5 lists the most common selected adverse reactions occurring in ≥ 4% of patients receiving FETROJA in the HABP/VABP trial. Table 5 Selected Adverse Reactions Occurring in ≥ 4% of HABP/VABP Patients Receiving FETROJA in Trial 2 Adverse Reaction FETROJA 2 grams IV over 3 hours every 8 hours (with dosing adjustment based on renal function). N = 148 Meropenem 2 grams IV over 3 hours every 8 hours (with dosing adjustment based on renal function). N = 150 HABP/VABP = hospital-acquired bacterial pneumonia/ventilator-associated bacterial pneumonia. Elevations in liver tests Elevations in liver tests include the following terms: aspartate aminotransferase increased, alanine aminotransferase increased, gamma-glutamyl transferase increased, liver function test increased, liver function test abnormal, hepatic enzyme increased, transaminases increased, hypertransaminesemia. 16% 16% Hypokalemia Hypokalemia includes blood potassium decreased. 11% 15% Diarrhea 9% 9% Hypomagnesemia 5% < 1% Atrial fibrillation 5% 3% Other Adverse Reactions of FETROJA in HABP/VABP Patients in Trial 2 The following selected adverse reactions were reported in FETROJA-treated HABP/VABP patients at a rate of less than 4% in Trial 2: Blood and lymphatic disorders : thrombocytopenia, thrombocytosis Cardiac disorders : myocardial infarction, atrial flutter Gastrointestinal disorders : nausea, vomiting, abdominal pain Hepatobiliary disorders : cholecystitis, cholestasis Infections and infestations : C. difficile infection, oral candidiasis Laboratory investigations : prolonged prothrombin time (PT) and prothrombin time international normalized ratio (PT-INR), activated partial thromboplastin time (aPTT) Metabolism and nutrition disorders : hypocalcemia, hyperkalemia Nervous system disorders : seizure Renal and genitourinary disorders : acute interstitial nephritis Respiratory, thoracic, and mediastinal disorders : cough Skin and subcutaneous tissue disorders : rash including rash erythematous

Postmarketing Experience

The following adverse reactions have been identified during postapproval use of FETROJA. Because these 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. Blood and lymphatic system disorders : neutropenia, eosinophilia Renal and urinary disorders : chromaturia

Drug/Laboratory Test Interactions Cefiderocol may result in false-positive results in dipstick tests

(urine protein, ketones, or occult blood). Use alternate clinical laboratory methods of testing to confirm positive tests.

Pregnancy Risk Summary There are no available data on FETROJA use in pregnant women to evaluate for a drug-associated risk of major birth defects, miscarriage, or adverse maternal or fetal outcomes. Available data from published prospective cohort studies, case series, and case reports over several decades with cephalosporin use in pregnant women have not established drug-associated risks of major birth defects, miscarriage, or adverse maternal or fetal outcomes (see Data ). Developmental toxicity studies with cefiderocol administered during organogenesis to rats and mice showed no evidence of embryo-fetal toxicity, including drug-induced fetal malformations, at doses providing exposure levels 0.9 times (rats) or 1.3 times (mice) higher than the average observed in patients receiving the maximum recommended daily dose. The estimated background risk of major birth defects and miscarriage for the indicated population is unknown.

All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Data Human Data While available studies cannot definitively establish the absence of risk, published data from prospective cohort studies, case series, and case reports over several decades have not identified an association with cephalosporin use during pregnancy and major birth defects, miscarriage, or other adverse maternal or fetal outcomes.

Available studies have methodologic limitations, including small sample size, retrospective data collection, and inconsistent comparator groups. Animal Data Developmental toxicity was not observed in rats at intravenous doses of up to 1000 mg/kg/day or mice at subcutaneous doses of up to 2000 mg/kg/day given during the period of organogenesis (gestation days 6-17 in rats and 6-15 in mice). No treatment-related malformations or reductions in fetal viability were observed. Mean plasma exposure (AUC) at these doses was approximately 0.9 times (rats) and 1.3 times (mice) the daily mean plasma exposure in patients that received 2 grams of cefiderocol infused intravenously every 8 hours.

In a pre- and postnatal development study, cefiderocol was administered intravenously at doses up to 1000 mg/kg/day to rats from Day 6 of pregnancy until weaning. No adverse effects on parturition, maternal function, or pre- and postnatal development and viability of the pups were observed. In pregnant rats, cefiderocol-derived radioactivity was shown to cross the placenta, but the amount detected in fetuses was a small percentage (< 0.5%) of the dose.

Pediatric Use Safety and effectiveness of FETROJA in pediatric patients younger than 18 years of age have not been established.

is contraindicated in patients with a known history of severe hypersensitivity to cefiderocol or other beta-lactam antibacterial drugs, or any other component of FETROJA . FETROJA is contraindicated in patients with a known history of severe hypersensitivity to cefiderocol and other beta-lactam antibacterial drugs or other components of FETROJA.

There is no information on clinical signs and symptoms associated with an overdose of FETROJA. Patients who receive doses greater than the recommended dose regimen and have unexpected adverse reactions possibly associated with FETROJA should be carefully observed and given supportive treatment, and discontinuation or interruption of treatment should be considered. Approximately 60% of cefiderocol is removed by a 3- to 4-hour hemodialysis session.