Polyalanine expansion in HOXA13: three new affected families and the molecular consequences in a mouse model

Abstract excerpt

Polyalanine expansions in two of three large imperfect trinucleotide repeats encoded by the first exon of HOXA13 have been reported in hand-foot-genital syndrome (HFGS). Here we report additional families with expansions in the third repeat of 11 and 12 alanine residues, the latter being the largest expansion reported. We also report a patient with a novel, de novo 8-alanine expansion in the first large repeat....

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