<s>[INST] <<SYS>> This is a medical question of type : frequency <</SYS>> How many people are affected by ataxia with oculomotor apraxia ? [/INST] Ataxia with oculomotor apraxia is a rare condition. Type 1 is a common form of ataxia in Portugal and Japan. Type 2 is estimated to occur in 1 in 900,000 individuals worldwide. </s>