Genzyme Phase 3 Trial of Campath/Fludara Combination Shows Potential Benefit in Second-Line CLL
Following a planned second interim analysis, the CAM314 trial’s data safety monitoring panel recommended early closure of the study as it had achieved the pre-specified clinical and statistical significance in progression free survival (PFS), the study’s primary endpoint. While patients in the study continue to be followed, and final efficacy and safety data from the study are expected to be available in the second-half of 2010, response data from the second interim analysis (as assessed by the study’s investigators) reported at ASH indicate that the FluCAM combination provided significantly higher overall and complete response rates compared to Fludara alone. The preliminary results also suggest that the FluCAM regimen has an acceptable safety profile when compared to single-agent Fludara.
With a median of 17 months of follow up at the time of the second interim analysis, and as assessed by the independent data safety monitoring panel (IRRP), the FluCAM arm demonstrated superior progression free survival in comparison to Fludara alone, with median PFS of 29.6 months on the FluCAM regimen compared to 20.7 months for patients on Fludara, reducing the risk of disease progression or death by 39 percent (p=0.005). Of particular note, in the pre-specified subgroup of patients with advanced, Rai stage III-IV CLL, the median PFS was 26.1 months for FluCAM and 12.1 months for Fludara (p=0.003).
In addition, according to clinical trial investigator assessments, the FluCAM regimen provided significantly higher overall and complete response rates. The overall response rate of patients on FluCAM was 84.8 percent compared to 67.9 percent on Fludara (p<0.001). The complete response rate was 30.4 percent on FluCAM versus 16.4 percent on Fludara (p=0.002).
An additional secondary endpoint, overall survival, did not reach significance at this interim analysis.
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