anyone hear of this??

You might be like to read this page:

http://www.cancer.gov/cancertopics/factsheet/Therapy/biological

which appears to come from a reputable organisation, and is hosted on a US government website, which inspires some confidence.

Bear in mind that I am in no way qualified to give medical advice or treatment, although I've had my fair share of both over the last five years or so. Have you asked your specialist about this?

Dr Vinod - any views?