The significance of similarly expanded tracts in humans became evident when polyQ tracts were found to underlie Huntington's disease and several spinocerebellar ataxias.
A importancia de tractos expandidos de maneira similar en humanos fíxose evidente cando se encontrou que a presenza destes tractos poliQ podía explicar a enfermidade de Huntington e varias ataxias espiñocerebelares.