The SBBYS variant of Ohdo syndrome is estimated to occur in fewer than 1 per million people. At least 19 cases have been reported in the medical literature.
How many people are affected by Ohdo syndrome, Say-Barber-Biesecker-Young-Simpson variant ?
<|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 Ohdo syndrome, Say-Barber-Biesecker-Young-Simpson variant ?<|eot_id|><|start_header_id|>assistant<|end_header_id|> The SBBYS variant of Ohdo syndrome is estimated to occur in fewer than 1 per million people. At least 19 cases have been reported in the medical literature.<|eot_id|>