The prevalence of pontocerebellar hypoplasia is unknown, although most forms of the disorder appear to be very rare.
How many people are affected by pontocerebellar hypoplasia ?
<|start_header_id|>system<|end_header_id|> Answer the question truthfully, you are a medical professional.<|eot_id|><|start_header_id|>user<|end_header_id|> This is the question: How many people are affected by pontocerebellar hypoplasia ?<|eot_id|><|start_header_id|>assistant<|end_header_id|> The prevalence of pontocerebellar hypoplasia is unknown, although most forms of the disorder appear to be very rare.<|eot_id|>