The length of a treatment cycle was 2 weeks for the ELOXATIN and 5-FU/LV regimen; 6 weeks for the irinotecan plus 5-FU/LV regimen; and 3 weeks for the ELOXATIN plus irinotecan regimen. The median number of cycles administered per patient was 10 (23.9 weeks) for the ELOXATIN and 5-FU/LV regimen, 4 (23.6 weeks) for the irinotecan plus 5-FU/LV regimen, and 7 (21.0 weeks) for the ELOXATIN plus irinotecan regimen. Patients treated with the ELOXATIN and 5-FU/LV combination had a significantly longer time to tumor progression based on investigator assessment, longer overall survival, and a significantly higher confirmed response rate based on investigator assessment compared to patients given irinotecan plus 5-FU/LV. The following table summarizes the efficacy results.

Table 21 – Summary of Efficacy

The numbers in the response rate and TTP analysis are based on unblinded investigator assessment.

Figure 4 illustrates the Kaplan-Meier survival curves for the comparison of ELOXATIN and 5-FU/LV combination and ELOXATIN plus irinotecan to irinotecan plus 5-FU/LV.

Figure 4 – Kaplan-Meier Overall Survival by treatment arm

A descriptive subgroup analysis demonstrated that the improvement in survival for ELOXATIN plus 5-FU/LV compared to irinotecan plus 5-FU/LV appeared to be maintained across age groups, prior adjuvant therapy, and number of organs involved. An estimated survival advantage in ELOXATIN plus 5-FU/LV versus irinotecan plus 5-FU/LV was seen in both genders; however it was greater among women than men. Insufficient subgroup sizes prevented analysis by race.

Combination Therapy with ELOXATIN and 5-FU/LV in Previously Treated Patients with Advanced Colorectal Cancer

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