The prevalence of HFTC is unknown, but it is thought to be a rare condition. It occurs most often in Middle Eastern and African populations.
How many people are affected by hyperphosphatemic familial tumoral calcinosis ?
<|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 hyperphosphatemic familial tumoral calcinosis ?<|eot_id|><|start_header_id|>assistant<|end_header_id|> The prevalence of HFTC is unknown, but it is thought to be a rare condition. It occurs most often in Middle Eastern and African populations.<|eot_id|>