Capecitabine (Page 3 of 11)

5.2 Serious Adverse Reactions from Dihydropyrimidine Dehydrogenase (DPD) Deficiency

Patients with certain homozygous or compound heterozygous variants in the DPYD gene known to result in complete or near complete absence of DPD activity (complete DPD deficiency) are at increased risk for acute early-onset toxicity and serious, including fatal, adverse reactions due to capecitabine (e.g., mucositis, diarrhea, neutropenia, and neurotoxicity). Patients with partial DPD activity (partial DPD deficiency) may also have increased risk of serious, including fatal, adverse reactions.

Capecitabine is not recommended for use in patients known to have certain homozygous or compound heterozygous DPYD variants that result in complete DPD deficiency.

Withhold or permanently discontinue capecitabine based on clinical assessment of the onset, duration, and severity of the observed adverse reactions in patients with evidence of acute early-onset or unusually severe reactions, which may indicate complete DPD deficiency. No capecitabine dose has been proven safe for patients with complete DPD deficiency. There are insufficient data to recommend a specific dose in patients with partial DPD deficiency.

Consider testing for genetic variants of DPYD prior to initiating capecitabine to reduce the risk of serious adverse reactions if the patient’s clinical status permits and based on clinical judgement [see Clinical Pharmacology ( 12.5 )] . Serious adverse reactions may still occur even if no DPYD variants are identified.

An FDA-authorized test for the detection of genetic variants of DPYD to identify patients at risk of serious adverse reactions due to increased systemic exposure to capecitabine is 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).

5.3 Cardiotoxicity

Cardiotoxicity can occur with capecitabine. Myocardial infarction/ischemia, angina, dysrhythmias, cardiac arrest, cardiac failure, sudden death, electrocardiographic changes, and cardiomyopathy have been reported with capecitabine. These adverse reactions may be more common in patients with a prior history of coronary artery disease.

Withhold capecitabine for cardiotoxicity as appropriate [see Dosage and Administration ( 2.5 )] . The safety of resumption of capecitabine in patients with cardiotoxicity that has resolved have not been established.

5.4 Diarrhea

Diarrhea, sometimes severe, can occur with capecitabine. In 875 patients with metastatic breast or colorectal cancer who received capecitabine as a single agent, the median time to first occurrence of grade 2 to 4 diarrhea was 34 days (range: 1 day to 1 year). The median duration of grade 3 to 4 diarrhea was 5 days.

Withhold capecitabine and then resume at same or reduced dose or permanently discontinue based on severity and occurrence [see Dosage and Administration ( 2.5 )] .

5.5 Dehydration

Dehydration can occur with capecitabine. Patients with anorexia, asthenia, nausea, vomiting, or diarrhea may be at an increased risk of developing dehydration with capecitabine. Optimize hydration before starting capecitabine. Monitor hydration status and kidney function at baseline and as clinically indicated. Withhold capecitabine and then resume at same or reduced dose, or permanently discontinue, based on severity and occurrence [see Dosage and Administration ( 2.5 )] .

5.6 Renal Toxicity

Serious renal failure, sometimes fatal, can occur with capecitabine. Renal impairment or coadministration of capecitabine with other products known to cause renal toxicity may increase the risk of renal toxicity [see Drug Interactions ( 7.3 )] .

Monitor renal function at baseline and as clinically indicated. Optimize hydration before starting capecitabine. Withhold capecitabine and then resume at same or reduced dose, or permanently discontinue, based on severity and occurrence [see Dosage and Administration ( 2.5 )] .

5.7 Serious Skin Toxicities

Severe cutaneous adverse reactions (SCARs), including Stevens-Johnson Syndrome and toxic epidermal necrolysis (TEN), which can be fatal, can occur with capecitabine [see Adverse Reactions ( 6.2 )] .

Monitor for new or worsening serious skin reactions. Permanently discontinue capecitabine for severe cutaneous adverse reactions.

5.8 Palmar-Plantar Erythrodysesthesia Syndrome

Palmar-plantar erythrodysesthesia syndrome (PPES) can occur with capecitabine.

In patients with metastatic breast or colorectal cancer who received capecitabine as a single agent, the median time to onset of grades 1 to 3 PPES was 2.6 months (range: 11 days to 1 year).

Withhold capecitabine and then resume at same or reduced dose or permanently discontinue based on severity and occurrence [see Dosage and Administration ( 2.5 )] .

5.9 Myelosuppression

Myelosuppression can occur with capecitabine.

In the 875 patients with metastatic breast or colorectal cancer who received capecitabine as a single agent, 3.2% had grade 3 or 4 neutropenia, 1.7% had grade 3 or 4 thrombocytopenia, and 2.4% had grade 3 or 4 anemia.

In the 251 patients with metastatic breast cancer who received capecitabine with docetaxel, 68% had grade 3 or 4 neutropenia, 2.8% had grade 3 or 4 thrombocytopenia, and 10% had grade 3 or 4 anemia.

Necrotizing enterocolitis (typhlitis) has been reported. Consider typhlitis in patients with fever, neutropenia and abdominal pain.

Monitor complete blood count at baseline and before each cycle. Capecitabine is not recommended if baseline neutrophil count <1.5 x 109 /L or platelet count <100 x 109 /L. For grade 3 to 4 myelosuppression, withhold capecitabine and then resume at same or reduced dose, or permanently discontinue, based on occurrence [see Dosage and Administration ( 2.5 )] .

All MedLibrary.org resources are included in as near-original form as possible, meaning that the information from the original provider has been rendered here with only typographical or stylistic modifications and not with any substantive alterations of content, meaning or intent.

This site is provided for educational and informational purposes only, in accordance with our Terms of Use, and is not intended as a substitute for the advice of a medical doctor, nurse, nurse practitioner or other qualified health professional.

Privacy Policy | Copyright © 2024. All Rights Reserved.