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Evidence for a Heritable Predisposition to Chronic Fatigue Syndrome – Source: BMC Neurology, May 27, 2011

  [ 9 votes ]   [ 1 Comment ]
By Frederick Albright, et al. • • May 27, 2011

[Note: to read the full text of this free access article click HERE.]

Background: Chronic Fatigue Syndrome (CFS) came to attention in the 1980s, but initial investigations did not find organic causes. Now decades later, the etiology of CFS has yet to be understood, and the role of genetic predisposition in CFS remains controversial. Recent reports of CFS association with the retrovirus xenotropic murine leukemic virus-related virus (XMRV) or other murine leukemia related retroviruses (MLV) might also suggest underlying genetic implications within the host immune system.

Methods: We present analyses of familial clustering of CFS in a computerized genealogical resource linking multiple generations of genealogy data with medical diagnosis data of a large Utah health care system.

We compare pair-wise relatedness among cases to expected relatedness in the Utah population, and we estimate risk for CFS for first, second, and third degree relatives of CFS cases.


• We observed significant excess relatedness of CFS cases compared to that expected in this population.

• Significant excess relatedness was observed for both close (p<0.001) and distant relationships (p = 0.010).

• We also observed significant excess CFS relative risk among first (2.70, 95% CI: 1.56-4.66), second (2.34, 95% CI: 1.31-4.19), and third degree relatives (1.93, 95% CI: 1.21-3.07). [Note: an RR of 2.7, for example represents nearly three times the risk for the population overall.]


• These analyses provide strong support for a heritable contribution to predisposition to Chronic Fatigue Syndrome.

• A population of high-risk CFS pedigrees has been identified, the study of which may provide additional understanding.

Source: BMC Neurology, May 27, 2011;11:62doi:10.1186/1471-2377-11-62, by Albright F, Light K, Light A, Bateman L, Cannon-Albright LA. Pharmacotherapy Outcomes Research Center, Department of Pharmacotherapy; College of Pharmacy; Department of Anesthesiology, University of Utah; Division of Genetic Epidemiology, Department of Internal Medicine, School of Medicine, University of Utah; Fatigue Consultation Clinic; George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, USA. [Email:]

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Article Comments Post a Comment

products: methylation...cfs/fm
Posted by: wick66
May 28, 2011
what products can be taken until one is developed ? great, hopeful article. j wickert
Reply Reply
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