Generation of a gene-corrected human isogenic iPSC line from a patient with Fabry disease carrying the GLA variant c.1069C>T using CRISPR/Cas9-mediated homology directed repair

Abstract

Fabry disease (FD) is an X-linked genetic disorder caused by mutations in the GLA gene, leading to α-galactosidase A deficiency and intracellular globotriaosylceramide (Gb3) accumulation. To study FD-associated pathomechanisms, we generated an isogenic control induced pluripotent stem cell (iPSC) line (IsoFD-1) from a patient-derived FD-iPSC line (FD-1) carrying the GLA c.1069C>T mutation. Using CRISPR/Cas9 gene correction, we restored the wild-type sequence, confirmed by Sanger sequencing and absence of Gb3 deposits. IsoFD-1 exhibited typical pluripotency markers, normal karyotype, and trilineage differentiation capacity. This line provides a valuable tool for investigating Gb3-related cellular dysfunction in FD.