2. Variant Duarte Galactosemia

Duarte galactosemia is a less severe form of classic galactosemia. It also results from a mutation in the GALT gene. However, while the body is unable to break down any galactose in classic galactosemia, in the Duarte variety, the enzyme's activity is decreased by approximately 75%. People with variant Duarte galactosemia typically do not have serious symptoms and may or may not require treatment.

variant Duarte galactosemia Stígur Már Karlsson /Heimsmyndir / Getty Images

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