Even in colorectal cancer patients with wild-type KRAS mutations, there was no increase in overall survival time or in the time it took before cancer progressed when Erbitux® (cetuximab) was added to FOLFOX or CAPOX chemotherapy.

More tumors got smaller with Erbitux treatment, but there was an increase in both serious gastrointestinal toxicity and severe skin rash when the drug was added.

Patients with tumor mutations in any of three genes — KRAS, BRAF, or NRAS — had poorer survival. Read the rest of this entry »

At the ECCO/ESMO  meeting in Berlin the data on a large phase III clinical trial from the United Kingdom (COIN) was presented. It was a trial comparing FOLFOX or XELOX in combination with Erbitux.

It is important to know that in the UK Avastin is not approved, and Erbitux was only recently approved in patients with organ limited disease based on the chance of curative resections in patients initially deemed not to be resectable. However it is difficult to judge what the COIN results mean. The response rates in the patients with wild-type KRAS was significantly increased to 64%, so far so good. The problem is that the time to tumor progression and overall survival was not improved in patients with wild-type KRAS and Erbitux therapies. Read the rest of this entry »