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Chemotherapy for Colorectal Cancer - Frequently Asked Questions

Below you will find answers to questions frequently asked by colorectal cancer patients undergoing chemotherapy treatment.

What is chemotherapy?

  • Chemotherapy is a treatment that uses drugs designed to destroy or prevent further growth of cancer cells. Chemotherapy is a systemic treatment, meaning that the drugs flow through the bloodstream to nearly every part of the body.
  • Many times, two or more chemotherapy drugs are used together in combination therapy to enhance their effectiveness. Chemotherapy can be used in conjunction with surgery or radiation treatment. Chemotherapy given before surgery and/or radiation is called neoadjuvant therapy. Chemotherapy given with radiation or after surgery is known as adjuvant therapy.
  • Chemotherapy can be used to stop cancer from spreading, slow the growth of cancer, relieve symptoms that are caused by cancer and reduce the risk of cancer returning.

How is chemotherapy given?

Chemotherapy can be given:

  • By mouth in tablets, capsules, or liquid form.
  • Intravenously (often called IV). Chemotherapy is delivered through a vein. A fine needle is inserted into a vein in the hand or lower arm at the beginning of each treatment and removed at the end of the treatment.
  • By IV through a catheter. A catheter is a soft, flexible tube that is placed in a large vein and remains there as long as necessary for treatment. The catheter is usually placed in the upper chest. Sometimes a catheter is attached to a ‘port’ – a tiny disk with an opening – that is placed under the skin.
  • Topically. Medication is applied directly onto the surface of the skin.
  • By injection with a needle and syringe.

Are there side effects specific to ELOXATIN?

You may experience side effects when taking ELOXATIN. Learn more.

Find out about ways to cope with chemotherapy side effects.

INDICATIONS

Eloxatin® (oxaliplatin injection), used in combination with infusional 5-FU/LV, is indicated for

  • Adjuvant treatment of stage III colon cancer patients who have undergone complete resection of the primary tumor.
  • Treatment of advanced carcinoma of the colon or rectum.

Clinical Safety Considerations

Anaphylactic-like reactions to ELOXATIN have been reported and may occur within minutes of ELOXATIN administration. Epinephrine, corticosteroids, and antihistamines have been employed to alleviate symptoms.

  • ELOXATIN should not be administered to patients with a history of known allergy to ELOXATIN or other platinum compounds. Hypersensitivity and anaphylactic/anaphylactoid reactions to ELOXATIN have been reported and were similar in nature and severity to those reported with other platinum compounds (ie, rash, urticaria, erythema, pruritus, and, rarely, bronchospasm and hypotension). These reactions occur within minutes of administration and should be managed with appropriate supportive therapy. Drug-related deaths from this reaction have been reported.
  • ELOXATIN may cause fetal harm when administered to a pregnant woman. Women of childbearing potential should be advised not to become pregnant while receiving ELOXATIN. It is not known whether ELOXATIN or its derivatives are excreted in human milk.
  • ELOXATIN has been associated with pulmonary fibrosis (<1% of study patients), which may be fatal. The combined incidence of cough and dyspnea was 7.4% (<1% grade 3, no grade 4) in the ELOXATIN plus 5-FU/LV arm compared to 4.5% (no grade 3, 0.1% grade 4) in the 5-FU/LV alone arm in the adjuvant colon cancer study. In this study, one patient died from eosinophilic pneumonia in the ELOXATIN combination arm. The combined incidence of cough, dyspnea, and hypoxia was 43% (7% grade 3 and 4) in the ELOXATIN plus 5-FU/LV arm compared to 32% (5% grade 3 and 4) in the irinotecan plus 5-FU/LV arm in patients with previously untreated colorectal cancer. In case of unexplained respiratory symptoms, ELOXATIN should be discontinued until pulmonary investigation excludes interstitial lung disease or pulmonary fibrosis.
  • ELOXATIN is associated with two types of primarily peripheral sensory neuropathy: an acute, reversible type of early onset and a persistent type (>14 days). In patients with advanced colorectal cancer paresthesias occurred in 77% (all grades) and 18% (grade 3/4) of previously untreated patients. In previously treated patients, acute neuropathy occurred in 56% (all grades) and 2% (grade 3/4) of patients; persistent neuropathy occurred in 48% (all grades) and 6% (grade 3/4) of patients. In patients with stage II and III colon cancer, paresthesia was seen in 92% (all grades) and 13% (grade 3/4) of patients; 21% (all grades), 0.5% (grade 3/4) had residual paresthesia at 18-month follow-up.
  • Hepatotoxicity, as evidenced in the adjuvant study by increase in transaminases and alkaline phosphatase was observed more commonly in the ELOXATIN combination arm. The incidence of increased bilirubin was similar on both arms. Changes noted on liver biopsies include: peliosis, nodular regenerative hyperplasia or sinusoidal alterations, perisinusoidal fibrosis and veno-occlusive lesions. Hepatic vascular disorders should be considered and, if appropriate, investigated in case of abnormal liver function test results or portal hypertension not explained by liver metastases.
  • Monitoring of white blood cell count with differential, hemoglobin, platelet count and blood chemistries (including ALT, AST, bilirubin and creatinine) is recommended before each ELOXATIN cycle.
  • The safety and effectiveness of ELOXATIN plus 5-FU/LV in patients with renal impairment have not been evaluated. Since the primary route of platinum elimination is renal, this combination should be used with caution in patients with preexisting renal impairment. Clearance of these products may be decreased by coadministration of potentially nephrotoxic compounds, although this has not been specifically studied.
  • The incidence of diarrhea, dehydration, hypokalemia, leukopenia, fatigue and syncope were higher in patients ≥65 years old.
  • Extravasation may result in local pain and inflammation that may be severe and lead to complications, including necrosis. Injection site reaction, including redness, swelling and pain, has been reported.
  • There have been reports of prolonged prothrombin time and INR occasionally associated with hemorrhage in patients receiving ELOXATIN plus 5-FU/LV while on anticoagulants. Patients receiving ELOXATIN plus 5-FU/LV and requiring oral anticoagulants may require closer monitoring.
  • The most common adverse reactions in patients with stage II or III colon cancer receiving adjuvant therapy were peripheral sensory neuropathy, neutropenia, thrombocytopenia, anemia, nausea, increase in transaminases and alkaline phosphatase, diarrhea, emesis, fatigue, and stomatitis. The most common adverse reactions in patients with advanced colorectal cancer were peripheral sensory neuropathy, fatigue, neutropenia, nausea, emesis, and diarrhea.

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