Waa eray caafimaad oo laga tagay oo hore loogu isticmaali jiray cudurrada hidde-sideyaasha ah ee dhaawaca habdhiska neerfaha, gaar ahaan Hex-A Yaraansho (Tay–Sachs disease), kuwaas oo sababa arag-beel sii kordhaysa, hoos u dhac maskaxeed, iyo dhibaatooyin neerfeed.
Hada waxaa lagu badalay magaacaan, faahfaahin dheeraad ah fiiri:- Hex-A Yaraansho (Tay-Sachs disease).