ELOXATIN (oxaliplatin injection) for Stage III Colon Cancer and Metastatic Colorectal Cancer

ELOXATIN (oxaliplatin injection), a platinum-based drug used in combination with infusional 5-fluorouracil/leucovorin (5-FU/LV), is indicated for adjuvant treatment of stage III colon cancer in patients who have undergone complete resection of their primary tumor.

ELOXATIN (oxaliplatin injection) for Stage III Colon Cancer

This randomized phase III study compared the efficacy and safety of ELOXATIN (oxaliplatin injection) + infusional 5-FU/LV in the Adjuvant Treatment of Colon Cancer vs. 5-FU/LV alone (MOSAIC).

Primary end point

  • Disease-free survival (DFS)

Secondary end points

  • Safety
  • Overall survival (OS)

In a large clinical study for stage II and stage III colon cancer, ELOXATIN (oxaliplatin injection) + infusional 5-FU/LV vs. 5-FU/LV alone has demonstrated the following:

  • Absolute improvement at 5 years in DFS was 7.5% (66.4% [95% CI: 62.7-70.0] for ELOXATIN + infusional 5-FU/LV) vs. (58.9% [95% CI: 55.2-62.7] for infusional 5-FU/LV alone) for stage III patients, with a median follow-up of 6.4 years (Hazard ratio [95% CI]: 0.78 [.065-0.93]; P=.0051
  • Number of events – relapse or death (%): 226 (33.6%) for ELOXATIN + infusional 5-FU/LV vs. 271 (40.1%) for infusional 5-FU/LV alone
  • 5.5% absolute improvement in overall survival vs. infusional 5-FU/LV alone at median 6.8-year follow-up in stage III patients2
  • 3.4% absolute improvement in overall survival, stages II and III at median 6.8-year follow-up in stage II and stage III patients combined2
  • No statistically significant improvement in overall survival and in DFS was seen in stage II patients
  • ELOXATIN is not indicated for the treatment of stage II colon cancer

Safety Information from the Adjuvant Trial (MOSAIC):

  • Most common (25% or more) adverse events (for all grade) for the arm receiving ELOXATIN + infusional 5FU/LV in this study were:
    • Fatigue (44%), skin disorder (32%), nausea (74%), diarrhea (56%), vomiting (47%), stomatitis (42%), fever (27%), infection (25%), overall peripheral sensory neuropathy (92%), anemia (76%), neutropenia (79%), thrombocytopenia (77%), increase in transaminases (57%), ALP increased (42%)
  • The most common grade 3/4 (greater than or equal to 5%) adverse events for the arm receiving Eloxatin + infusional 5FU/LV in this study were:
    • Nausea (5%), diarrhea (11%), vomiting (6%), overall peripheral neuropathy (12%), neutropenia (41%)

ELOXATIN (oxaliplatin injection) is not indicated for treatment of stage II colon cancer. No benefit in overall survival has been shown in stage II patients.

Important Safety Information

  1. 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.
  2. 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.
  3. 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.

To learn more about ELOXATIN's efficacy and safety in colon cancer, visit Adjuvant Colon Cancer Trial.

ELOXATIN (oxaliplatin injection) for Metastatic Colorectal Cancer

ELOXATIN (oxaliplatin injection) + infusional 5-FU/LV is indicated for treatment of advanced carcinoma of the colon or rectum.

This randomized phase III study compared the safety and efficacy between IFL and both ELOXATIN + infusional 5-FU/LV q2w (FOLFOX4) and ELOXATIN + irinotecan q3w (IROX) as first line therapy in patients with previously untreated colorectal cancer (N9741).

Primary End Point

  • Time to tumor progression (TTP): IFL vs. FOLFOX4 vs. IROX

Secondary End Points (IFL vs. FOLFOX4 vs. IROX)

  • Overall survival
  • Response rate
  • Safety

In our pivotal clinical studies in patients previously untreated for advanced colorectal cancer, ELOXATIN (oxaliplatin injection) + infusional 5-FU/LV demonstrated the following advantages over irinotecan + bolus 5-FU/LV (IFL):

  • Significantly increased overall survival (19.4 months vs 14.6 months [Hazard Ratio (HR) = 0.65; 95% Confidence Interval (95% CI), 0.53-0.80; P<0.0001])
    • 4.8-month absolute improvement in overall survival3
    • Number of deaths N (%): 155 (58.1%) for ELOXATIN + infusional 5-FU/LV (N=267) vs. 192 (72.7%) for irinotecan + 5-FU/LV (N=264)
    • Patients received a median of 10 cycles3
  • Increased time-to-tumor progression (8.7 months vs 6.9 months [Hazard Ratio (HR) = 0.74; Confidence Interval (95% CI), 0.61-0.89; P=0.0014])
  • Higher response rate (45.2% vs 32.5% [95% CI, 38.5-52.0; [P=0.0080])

Safety Information from the Metastatic Trial (N9741):

  • Most common (25% or more) adverse events (for all grade) for the arm receiving ELOXATIN + infusional 5FU/LV in this study (first line metastatic) were:
    • Fatigue (70%), abdominal pain (29%), nausea (71%), diarrhea (56%), vomiting (41%), stomatitis (38%), anorexia (35%), constipation (32%), overall neuropathy (82%), paresthesias (77%), pharyngo-laryngeal dysthesias (38%), cough (35%), anemia (27%), leucopenia (85%), neutropenia (81%), thrombocytopenia (71%).
  • The most common grade 3/4 (greater than or equal to 5%) adverse events for the arm receiving Eloxatin + infusional 5FU/LV in this study (first line metastatic) were:
    • Thrombosis (5%), Fatigue (7%), Abdominal Pain (8%), Nausea (6%), Diarrhea (12%), Infection low ANC† (8%), Dehydration (5%), Overall Neuropathy (19%), Paresthesias (19%), Dyspnea (7%)

To learn more about ELOXATIN's efficacy and safety in metastatic colorectal cancer (mCRC), visit First-Line mCRC Trial.

Important Safety Information

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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References:

  1. ELOXATIN® (oxaliplatin injection) prescribing information, Sanofi US.
  2. Data on file. Survival update report SR96669. 2007.
  3. Goldberg RM, Sargent DJ, Morton RF, et al. A randomized controlled trial of fluorouracil plus leucovorin, irinotecan, and oxaliplatin combinations in patients with previously untreated metastatic colorectal cancer.J Clin Oncol. 2004;22:23-30.
  4. Haller DG. Safety of oxaliplatin in the treatment of colorectal cancer. Oncology (Williston Park). 2000;14 (suppl 11):15-20.

WARNING: ANAPHYLACTIC REACTIONS

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.
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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.
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