Abstract
Primary hyperoxaluria type-III is a disorder of glyoxylate metabolism, caused by pathogenic variants in the HOGA1 gene. To date more than 50 disease-associated pathogenic sequence variants are identified in the gene. A few of the variants are population specific and are considered to have a founder effect in respective populations. The most prevalent variant, c.700+5G>T, identified frequently in Caucasian (allele frequency 0.63) and European (0.35) populations. Two variants, c.860G>T (p.Gly287Val) and c.944_946delAGG (p.Glu315del), account for 95% of the allele count in patients of Ashkenazi Jews ancestry. A possible mutational hot-spot at c.834 position is frequently found mutated in Chinese patients. This observed ethnic associations of HOGA1 alleles span a spectrum ranging from recurrence limited to an ethnic group to a possible founder-effect.
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