Wall Street Journal
January 7, 2010
Jacob Goldstein
URL:
http://blogs.wsj.com/health/2010/01/07/or-maybe-that-virus-isnt-linked-to-chronic-fatigue-syndrome/
Or maybe that virus isn't linked to Chronic Fatigue Syndrome
A few months back, a group of scientists got a lot of attention when
they published a study that suggested a virus called XMRV could be
linked to many cases of chronic fatigue syndrome, or CFS.
But as we noted at the time, the study didn't clearly prove a link
between the disease and the virus. Now, in a study published this
week in the journal PLoS One, scientists in the U.K. say they looked
at samples from 186 CFS patients and found no sign of XMRV.
A research institute that was part of the earlier study fired off a
press release that faulted the methods used in the new article,
arguing that the techniques 'not only explain their failure to
replicate' the earlier findings, 'but also render the conclusions
meaningless.'
Needless to say, the U.K. scientists defended their
work.
(For more on the technical back-and-forth, see this article from
http://sciencenow.sciencemag.org/cgi/content/full/2010/106/1 )
A lot is at stake here, because there's no test to determine
whether someone has CFS; it's diagnosed based on a patient's symptoms,
which the CDC says include six months or more of incapacitating
fatigue, along with other problems. So finding a physiological link
- like a viral infection - would be an important advance.
(c) 2010 Wall Street Journal