ArticleFrontiers in molecular biosciences2026
Novel GLA variant (c.752A>C; p.Glu251Ala) identified in a patient with Fabry cardiomyopathy and familial segregation.
Article in Frontiers in molecular biosciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Fabry disease (Anderson-Fabry disease,FD) is an X-linked lysosomal storage disorder caused by variants in GLA, resulting in α-galactosidase A (α-Gal A) deficiency and accumulation of globotriaosylsphingosine (lyso-Gb3), with frequent cardiac involvement. Case Summary: A 53-year-old man presented with exertional chest tightness and dyspnea. Electrocardiography and echocardiography demonstrated marked left ventricular hypertrophy. Cardiac magnetic resonance revealed diffuse hypertrophy with extensive subendocardial late gadolinium enhancement. ^99mTc-pyrophosphate scintigraphy showed minimal myocardial uptake, arguing against transthyretin cardiac amyloidosis. Biochemical testing showed markedly reduced α-Gal A activity and elevated lyso-Gb3 levels. Whole-exome sequencing identified a previously unreported GLA variant (NM_000169.3:c.752A>C; p.Glu251Ala), which was confirmed by Sanger sequencing and detected in multiple family members. The variant is currently classified as a variant of uncertain significance (VUS). Familial analysis demonstrated a segregation pattern consistent with X-linked inheritance. Conclusion: We report a novel GLA variant associated with biochemical abnormalities and familial segregation consistent with FD. These findings support a potential role of this variant in Fabry cardiomyopathy and expand the mutational spectrum of GLA, although its pathogenicity requires further validation.
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