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flag FDA approves generic leucovorin only for rare cerebral folate deficiency, not autism.

flag The FDA has approved a generic version of leucovorin for treating a rare genetic disorder, cerebral folate deficiency caused by a mutation in the folate receptor 1 gene, affecting fewer than 1 in a million people. flag The approval is limited to this specific condition, which causes neurological issues like seizures and developmental delays, not autism more broadly. flag Despite earlier claims by officials that the drug could help many autistic children, the FDA stated its review found no sufficient evidence to support such use. flag A key study cited in support was retracted, and major medical groups do not recommend routine use. flag Prescriptions surged after a White House event, causing shortages and prompting the FDA to allow imports. flag The underlying theory linking autism to folate-blocking antibodies remains unproven.

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