Capecitabine Drug Information

Evaluation and Testing of DPD Deficiency Before Initiating Capecitabine Tablets Prior to initiating capecitabine tablets, test patients for genetic variants of the DPYD gene unless immediate treatment is necessary. An FDA-authorized test for the detection of the DPYD gene to identify patients at risk of serious adverse reactions with capecitabine tablets are not currently available. Currently available tests used to identify DPYD variants may vary in accuracy and design (e.g., which DPYD variant(s) they identify).

Avoid use of capecitabine tablets in patients known to have certain homozygous or compound heterozygous DPYD variants that result in complete DPD deficiency. No capecitabine tablets dose has been proven safe for patients with complete DPD deficiency. For patients with partial DPD deficiency, individualize the dosage and modify based on tolerability and intent of treatment.

Recommended Dosage for Colorectal Cancer Adjuvant Treatment of Colon Cancer Single Agent The recommended dosage of capecitabine tablets is 1,250 mg/m 2 orally twice daily for the first 14 days of each 21-day cycle for a maximum of 8 cycles. Refer to the oxaliplatin prescribing information for additional dosing information as appropriate. Perioperative Treatment of Rectal Cancer The recommended dosage of capecitabine is 825 mg/m 2 orally twice daily when administered with concomitant radiation therapy and 1,250 mg/m 2 orally twice daily when administered without radiation therapy as part of a peri-operative combination regimen.

Unresectable or Metastatic Colorectal Cancer Single Agent The recommended dosage of capecitabine tablets is 1,250 mg/m 2 orally twice daily for the first 14 days of a 21-day cycle until disease progression or unacceptable toxicity.

Individualize the dose and dosing schedule of capecitabine tablets based on patient risk factors and adverse reactions. In Combination with Docetaxel The recommended dosage of capecitabine tablets is orally twice daily for the first 14 days of a 21-day cycle until disease progression or unacceptable toxicity in combination with docetaxel 75 mg/m 2 administered intravenously on day 1 of each cycle.

Recommended Dosage for Gastric, Esophageal, or Gastroesophageal Junction Cancer The recommended dosage of capecitabine tablets for unresectable or metastatic gastric, esophageal, or gastroesophageal junction cancer is: 625 mg/m 2 orally twice daily on days 1 to 21 of each 21-day cycle for a maximum of 8 cycles in combination with platinum-containing chemotherapy. The recommended dosage of capecitabine tablets for HER2-overexpressing metastatic gastric or gastroesophageal junction adenocarcinoma is 1,000 mg/m 2 orally twice daily for the first 14 days of each 21-day cycle until disease progression or unacceptable toxicity in combination with cisplatin and trastuzumab.

Dosage Modifications for Adverse Reactions

Monitor patients for adverse reactions and modify dosages of capecitabine tablets as described in Table 1. Do not replace missed doses of capecitabine tablets; instead resume capecitabine tablets with the next planned dosage. When capecitabine tablets is administered with docetaxel, withhold capecitabine tablets and docetaxel until the requirements for resuming both capecitabine tablets and docetaxel are met.

A dosage has not been established in patients with severe renal impairment (CLcr <30 mL/min).

Administration Round the recommended dosage for patients to the nearest 150 mg dose to provide whole capecitabine tablets. Swallow capecitabine tablets whole with water within 30 minutes after a meal. Do not chew, cut, or crush capecitabine tablets.

Take capecitabine tablets at the same time each day approximately 12 hours apart. Do not take an additional dose after vomiting and continue with the next scheduled dose. Do not take a missed dose and continue with the next scheduled dose.

Capecitabine tablet is a hazardous drug. Follow applicable special handling and disposal procedures.

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. Adjuvant Treatment of Colon Cancer Single Agent The safety of capecitabine tablets as a single agent was evaluated in patients with Stage III colon cancer in X-ACT. Among patients who received capecitabine tablets, the median duration of treatment was 5.4 months.

Deaths due to all causes occurred in 0.8% of patients who received capecitabine tablets on study or within 28 days of receiving study drug. Permanent discontinuation due to an adverse reaction occurred in 11% of patients who received capecitabine tablets. Most common adverse reactions (>30%) were palmar-plantar erythrodysesthesia syndrome, diarrhea, and nausea.

Tables 2 and 3 summarize the adverse reactions and laboratory abnormalities in X-ACT. The safety of capecitabine tablets for the adjuvant treatment of patients with Stage III colon cancer as a component of a combination chemotherapy regimen was similar to those in patients treated with capecitabine tablets as a single agent, with the exception of an increased incidence of neurosensory toxicity. Perioperative Treatment of RectalCancer The safety of capecitabine tablets for the perioperative treatment of adults with locally advanced rectal cancer as a component of chemoradiotherapy was derived from published literature.

The safety of capecitabine tablets for the perioperative treatment of adults with locally advanced rectal cancer as a component of chemoradiotherapy was similar to those in patients treated with capecitabine tablets as a single agent, with the exception of an increased incidence of diarrhea. Metastatic Colorectal Cancer Single Agent The safety of capecitabine tablets as a single agent was evaluated in a pooled metastatic colorectal cancer population (Study SO14695 and Study SO14796). Table 4 shows the adverse reactions occurring in this pooled colorectal cancer population.

Table 4 Adverse Reactions (>10%) in Patients Who Received Capecitabine tablets in Pooled Metastatic Colorectal Cancer Population Study SO = Not Applicable Clinically relevant adverse reactions in <10% of patients are presented below: Eye: abnormal vision Gastrointestinal: upper gastrointestinal tract inflammatory disorders, gastrointestinal hemorrhage, ileus General: chest pain Infections: viral Metabolism and Nutrition: dehydration Musculoskeletal: arthralgia Nervous System:dizziness (excluding vertigo), insomnia, taste disturbance Psychiatric: mood alteration, depression Respiratory, Thoracic, and Mediastinal:cough, pharyngeal disorder Skin and Subcutaneous Tissue: skin discoloration, alopecia Vascular: venous thrombosis In Combination with Oxaliplatin The safety of capecitabine tablets for the treatment of patients with unresectable or metastatic colorectal cancer as a component of a combination chemotherapy regimen was derived from published literature. The safety of capecitabine tablets for the treatment of patients with unresectable or metastatic colorectal cancer as a component of a combination chemotherapy regimen was similar to those in patients treated with capecitabine tablets as a single agent, with the exception of an increased incidence of peripheral neuropathy. Among patients who received capecitabine tablets, the mean duration of treatment was 4.2 months.

Dosage interruptions due to an adverse reaction occurred in 79% of patients who received capecitabine tablets and dosage reductions due to an adverse reaction occurred in 65%. Table 5 summarizes the adverse reactions in Study SO14999. Table 5 Adverse Reactions (≥10%) in Patients Who Received Capecitabine tablets with Docetaxel for Metastatic Breast Cancer in Study SO = Not Applicable Clinically relevant adverse reactions in <10% of patients are presented below: Blood and Lymphatic System: agranulocytosis, prothrombin decreased Cardiac: supraventricular tachycardia Eye: conjunctivitis, eye irritation Gastrointestinal: ileus, necrotizing enterocolitis, esophageal ulcer, hemorrhagic diarrhea, dry mouth General: chest pain (non-cardiac), lethargy, pain, influenza-like illness Hepatobiliary: jaundice, abnormal liver function tests, hepatic failure, hepatic coma, hepatotoxicity Immune System: hypersensitivity Infection: hypoesthesia, neutropenic sepsis, sepsis, bronchopneumonia, oral candidiasis, urinary tract infection Metabolism and Nutrition: weight decreased Musculoskeletal and Connective Tissue:bone pain Nervous System: insomnia, peripheral neuropathy, ataxia, syncope, taste loss, polyneuropathy, migraine Psychiatric: depression Renal and Urinary: renal failure Respiratory, Thoracic and Mediastinal: upper respiratory tract infection, pleural effusion, epistaxis, rhinorrhea Skin and Subcutaneous Tissue: pruritis, rash erythematous, dermatitis, nail discoloration, onycholysis Vascular: lymphedema, hypotension, venous phlebitis and thrombophlebitis, postural hypotension, flushing Table 6 summarizes the laboratory abnormalities in this trial.

Table 6 Laboratory Abnormalities (≥20%) in Patients Who Received Capecitabine tablets with Docetaxel for Metastatic Breast Cancer in Study SO Single Agent The safety of capecitabine tablets as a single agent was evaluated in patients with metastatic breast cancer in Study SO14697. Patients received capecitabine tablets 1,250 mg/m 2 orally twice daily for the first 14 days of a 21-day cycle. The mean duration of treatment was 3.7 months.

Permanent discontinuation due to an adverse reaction or intercurrent illness occurred in 8% of patients. Most common adverse reactions (>30%) were lymphopenia, anemia, diarrhea, hand-and-foot syndrome, nausea, fatigue, vomiting, and dermatitis. Table 7 summarizes the adverse reactions in Study SO14697.

Table 7 Adverse Reactions (>10%) in Patients Who Received Capecitabine Tablets for Metastatic Breast Cancer in Study SO = Not Applicable Pooled SafetyPopulation Clinically relevant adverse reactions in <10% of patients who received capecitabine tablets as a single agent are presented below. Blood & Lymphatic System: leukopenia, coagulation disorder, bone marrow depression, pancytopenia Cardiac: tachycardia, bradycardia, atrial fibrillation, myocarditis, edema Ear: vertigo Eye: conjunctivitis Gastrointestinal: abdominal distension, dysphagia, proctalgia, gastric ulcer, ileus, gastroenteritis, dyspepsia General: chest pain, influenza-like illness, hot flushes, pain, thirst, fibrosis, hemorrhage, edema, pain in limb Hepatobiliary: hepatic fibrosis, hepatitis, cholestatic hepatitis, abnormal liver function tests Immune System:drug hypersensitivity Infections: bronchitis, pneumonia, keratoconjunctivitis, sepsis, fungal infections Metabolism and Nutrition: cachexia, hypertriglyceridemia, hypokalemia, hypomagnesemia, dehydration Musculoskeletal and Connective Tissue:myalgia, arthritis, muscleweakness Nervous System: insomnia, ataxia, tremor, dysphasia, encephalopathy, dysarthria, impaired balance, headache, dizziness Psychiatric: depression, confusion Renal and Urinary: renal impairment Respiratory, Mediastinal and Thoracic: cough, epistaxis, respiratory distress, dyspnea Skin and Subcutaneous Tissue:nail disorder, sweating increased, photosensitivity reaction, skin ulceration, pruritus, radiation recall syndrome Vascular: hypotension, hypertension, lymphedema, pulmonary embolism Unresectable or Metastatic Gastric, Esophageal, or Gastroesophageal Junction Cancer The safety of capecitabine tablets for the treatment of adults with unresectable or metastatic gastric, esophageal, or gastroesophageal junction cancer as a component of a combination chemotherapy regimen was derived from published literature. The safety of capecitabine tablets for the treatment of adults with unresectable or metastatic gastric, esophageal, or gastroesophageal junction cancer as a component of a combination chemotherapy regimen was consistent with the known safety profile of capecitabine tablets.

The safety of capecitabine tablets for the treatment of patients with HER2-overexpressing metastatic gastric or gastroesophageal junction adenocarcinoma who have not received prior treatment for metastatic disease as a component of a combination regimen was derived from the published literature. The safety of capecitabine tablets for the treatment of patients with HER2-overexpressing metastatic gastric or gastroesophageal junction adenocarcinoma was consistent with the known safety profile of capecitabine tablets. Pancreatic Cancer The safety of capecitabine tablets for the adjuvant treatment of adults with pancreatic adenocarcinoma as a component of a combination chemotherapy regimen was derived from the published literature.

The safety of capecitabine tablets for the adjuvant treatment of adults with pancreatic adenocarcinoma as a component of a combination chemotherapy regimen was consistent with the known safety profile of capecitabine tablets.

Postmarketing Experience

The following adverse reactions have been identified during post-approval use of capecitabine tablets. 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. Eye: lacrimal duct stenosis, corneal disorders including keratitis Hepatobiliary: hepatic failure Immune System Disorders: angioedema Nervous System: toxic leukoencephalopathy Renal & Urinary: acute renal failure secondary to dehydration including fatal outcome Skin & Subcutaneous Tissue: cutaneous lupus erythematosus, severe skin reactions such as Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis (TEN), persistent or severe PPES can eventually lead to loss of fingerprints

Effect of Other Drugs on Capecitabine Tablets Allopurinol

Concomitant use with allopurinol may decrease concentration of capecitabine’s active metabolites, which may decrease efficacy. Avoid concomitant use of allopurinol with capecitabine tablets. Leucovorin The concentration of fluorouracil is increased and its toxicity may be enhanced by leucovorin, folic acid, or folate analog products.

Deaths from severe enterocolitis, diarrhea, and dehydration have been reported in elderly patients receiving weekly leucovorin and fluorouracil. Instruct patients not to take products containing folic acid or folate analog products unless directed to do so by their healthcare provider.

Effect of Capecitabine Tablets on Other Drugs CYP2C9 Substrates Capecitabine tablets increased exposure of CYP2C9 substrates, which may increase the risk of adverse reactions related to these substrates. Closely monitor for adverse reactions of CYP2C9 substrates where minimal concentration changes may lead to serious adverse reactions when used concomitantly with capecitabine tablets (e.g., anticoagulants, antidiabetic drugs). Vitamin K Antagonists Capecitabine tablets increases exposure of vitamin K antagonist, which may alter coagulation parameters and/or bleeding and could result in death.

These events may occur within days of treatment initiation and up to 1 month after discontinuation of capecitabine tablets. Monitor INR more frequently and refer to the prescribing information of oral vitamin K antagonist for dosage adjustment, as appropriate, when capecitabine tablets is used concomitantly with vitamin K antagonist. Phenytoin Capecitabine tablets may increases exposure of phenytoin, which may increase the risk of adverse reactions related to phenytoin.

Closely monitor phenytoin levels and refer to the prescribing information of phenytoin for dosage adjustment, as appropriate, when capecitabine tablets is used concomitantly with phenytoin.

Nephrotoxic Drugs Due of the additive pharmacologic effect, concomitant use of capecitabine tablets with other drugs known to cause renal toxicity may increase the risk of renal toxicity. Closely monitor for signs of renal toxicity when capecitabine tablets is used concomitantly with nephrotoxic drugs (e.g. platinum salts, irinotecan, methotrexate, intravenous bisphosphonates).

Pregnancy Risk Summary Based on findings in animal reproduction studies and its mechanism of action, capecitabine tablets can cause fetal harm when administered to a pregnant woman. Available human data with capecitabine tablets use in pregnant women is not sufficient to inform the drug-associated risk. In animal reproduction studies, administration of capecitabine to pregnant animals during the period of organogenesis caused embryolethality and teratogenicity in mice and embryolethality in monkeys at 0.2 and 0.6 times the exposure (AUC) in patients receiving the recommended dose of 1,250 mg/m 2 twice daily, respectively (see Data).

Advise pregnant women of the potential risk to a fetus. 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 respectively. Data Animal Data Oral administration of capecitabine to pregnant mice during the period of organogenesis at a dose of 198 mg/kg/day caused malformations and embryo lethality. In separate pharmacokinetic studies, this dose in mice produced 5’-DFUR AUC values that were approximately 0.2 times the AUC values in patients administered the recommended daily dose.

Malformations in mice included cleft palate, anophthalmia, microphthalmia, oligodactyly, polydactyly, syndactyly, kinky tail and dilation of cerebral ventricles. Oral administration of capecitabine to pregnant monkeys during the period of organogenesis at a dose of 90 mg/kg/day, caused fetal lethality.

Pediatric Use The safety and effectiveness of capecitabine tablets in pediatric patients have not been established. Safety and effectiveness were assessed, but not established in two single arm studies in 56 pediatric patients aged 3 months to <17 years with newly diagnosed gliomas. In both trials, pediatric patients received an investigational pediatric formulation of capecitabine concomitantly with and following completion of radiation therapy (total dose of 5580 cGy in 180 cGy fractions).

The relative bioavailability of the investigational formulation to capecitabine tablets was similar. The adverse reaction profile was consistent with that of adults, with the exception of laboratory abnormalities which occurred more commonly in pediatric patients.

Capecitabine tablets are contraindicated in patients with history of severe hypersensitivity reaction to fluorouracil or capecitabine. History of severe hypersensitivity reactions to fluorouracil or capecitabine

Administer uridine triacetate within 96 hours for management of capecitabine tablets overdose. Although no clinical experience using dialysis as a treatment for capecitabine tablets overdose has been reported, dialysis may be of benefit in reducing circulating concentrations of 5’-DFUR, a low– molecular-weight metabolite of the parent compound.