Yesterday, Bristol-Myers Squibb (
BMY) released inconsistent results for its colon cancer drug Erbitux (cetuximab) from two late-stage studies. Among the two retrospective analyses of the pivotal phase III studies, CRYSTAL and COIN, one reported positive results while the other failed to meet its primary end point. Erbitux is sold by Merck KGaA, Eli Lilly (
LLY) and Bristol-Myers Squibb.
CRYSTAL is a multi-national study conducted by Merck KGaA. Erbitux, when added to Folfiri (a chemotherapy regimen) increased median overall survival to 19.9 months in an intent-to-treat population of first-line metastatic colorectal cancer (mCRC) patients compared to 18.6 months in the recipients of Folfiri only.
Moreover, when studied in a subset of mCRC patients with normal or wild-type version of a gene called KRAS, the median overall survival increased to 23.5 months in patients who received Erbitux plus Folfiri as against 20 months for those who took Folfiri alone.
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