SMA-PME is a rare disorder; approximately a dozen affected families have been described in the scientific literature.
How many people are affected by spinal muscular atrophy with progressive myoclonic epilepsy ?
<|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 spinal muscular atrophy with progressive myoclonic epilepsy ?<|eot_id|><|start_header_id|>assistant<|end_header_id|> SMA-PME is a rare disorder; approximately a dozen affected families have been described in the scientific literature.<|eot_id|>