CARASIL appears to be a rare condition. It has been identified in about 50 people, primarily in Japan and China.
How many people are affected by cerebral autosomal recessive arteriopathy with subcortical infarcts and leukoencephalopathy ?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How many people are affected by cerebral autosomal recessive arteriopathy with subcortical infarcts and leukoencephalopathy ? [/INST] \n CARASIL appears to be a rare condition. It has been identified in about 50 people, primarily in Japan and China.</s>