Krabbe screening | WABE 90.1 FM

Krabbe screening

Don Heupel / AP

A state Senate health committee Thursday approved a bill to offer optional testing of Georgia newborns for Krabbe disease, a rare genetic disorder.

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The form of Krabbe that strikes newborns is caused by a change, or mutation, in the gene that carries the blueprints for an enzyme called galactosylceramidase, which is crucial to wrapping protective insulation called myelin around nerves. Without it, the brain and nerves deteriorate.