Re: cyclin E
Glen Dawson BS, HT & QIHC (ASCP), Lead IHC Technologist, Milwaukee WI
inquires:
>>I have a pathologist who is very interested in a cyclin E antibody. She has
no vendor information so I am hoping some kind soul can direct me to someone
out there who has this commercially available. I need it for
immunohistochemistry on formalin fixed paraffin embedded tissue.<<
Uh, oh - I think you may have a problem here. I suspect your pathologist has
been descended on by an oncologist who has just read "Cyclin E and survival
in patients with breast cancer" by Khandan Keyomarsi PhD and a cast of
thousands (not including a pathologist) at M.D. Anderson, in the New England
Journal of Medicine 14 Nov 2002;347:1566-1575, with an editorial in the same
number of the journal (pages 546-7). They use a frozen-tissue method which
has considerable predictive value for adverse prognosis, while the
immunohistochemical method (they don't give a source for the antibody, but
look at the bibliography) is of much less value, for reasons they say they
don't understand. They specifically state that their "results are
encouraging, but they must be validated in a prospective trial before they
can be applied clinically." Since the value of cyclin E is going to be mostly
for small tumors, an IHC method for it has got to be developed before it is
going to be clinically applicable.
Show this to your pathologist - I hope it solves your problem - please let us
know what happens. Has anyone else on this list had recent requests for
cyclin E?
Bob Richmond
Samurai Pathologist
Knoxville TN
RSRICHMOND@aol.com
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