Ataxia with Oculomotor Apraxia type1 (AOA1), Ataxia with Oculomotor Apraxia type2 (AOA2), Ataxia with Oculomotor Apraxia type3 (AOA3), Ataxia Talengestasia (AT) and Ataxia Talengestasia Like (ATLD) represent a group of overlapping recessively inherited ataxias[22]. The gene discussed is APTX; the disease is ataxia telangiectasia.