Genetic polymorphisms for BDNF, COMT, and APOE do not affect gait or ankle motor control in chronic stroke: A preliminary cross-sectional study.

: Motor deficits after stroke are a primary cause of long-term disability. The extent of functional recovery may be influenced by genetic polymorphisms. : Determine the effect of genetic polymorphisms for brain-derived neurotrophic factor (), catechol-O-methyltransferase (), and apolipoprotein E () on walking speed, walking symmetry, and ankle motor control in individuals with chronic stroke.