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aTacoParty t1_jboeyi1 wrote

FFI is caused by a mutation in the PrP gene that predisposes it to misfolding causing disease. If this DNA mutation is not passed down to the fetus, then it won't get the disease even if the mother has FFI. The misfolded protein itself will not be passed from mother to fetus.

www.science.org/doi/abs/10.1126/science.1439789

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