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The genetics of fibromyalgia syndrome

Dan Buskila, Piercarlo Sarzi-Puttini, Jacob N Ablin
Pharmacogenomics 2007, 8 (1): 67-74
17187510
Fibromyalgia syndrome (FMS) is a common chronic widespread pain syndrome mainly affecting women. Although the etiology of FMS is not completely understood, varieties of neuroendocrine disturbances, as well as abnormalities of autonomic function, have been implicated in its pathogenesis. The exposure of a genetically predisposed individual to a host of environmental stressors is presumed to lead to the development of FMS. Fibromyalgia overlaps with several related syndromes, collectively compromising the spectrum of the functional somatic disorder. FMS is characterized by a strong familial aggregation. Recent evidence suggests a role for polymorphisms of genes in the serotoninergic, dopaminergic and catecholaminergic systems in the etiopathogenesis of FMS. These polymorphisms are not specific for FMS and are similarly associated with additional comorbid conditions. The mode of inheritance in FMS is unknown, but it is most probably polygenic. Recognition of these gene polymorphisms may help to better subgroup FMS patients and to guide a more rational pharmacological approach. Future genetic studies conducted in larger cohorts of FMS patients and matched control groups may further illuminate the role of genetics in FMS.

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