Deficiency or absence of alpha-galactosidase A (α-Gal A) enzyme activity leads to the accumulation of glycosphingolipids, specifically globotriaosylceramide (GL-3), in lysosomes leading to various symptoms and signs such as neuropathic pain, gastrointestinal manifestations, renal failure, hypertrophic cardiomyopathy and fibrosis, cardiac rhythm disturbances, heart failure, and stroke. This evidence concerns the gene GLA and hypertrophic cardiomyopathy.