Abstract
The Gypsies are a trans-national founder population of Asian descent, whose genetic heritage is still incompletely characterized. Here, we describe the first founder mutation leading to a lysosomal storage disorder in this population: R59H in GLB1, which causes infantile GM1-gangliosidosis. The R59H carrier rate is ∼2% in the general Gypsy population and ∼10% in the Rudari sub-isolate. Haplotype analysis suggests that the Gypsy diaspora may have contributed to the spread of this mutation to South America.
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