Additionally, screening for HOCM phenocopies, including urine and blood immunofixation, Fabry’s disease screening (which included polymerase chain reaction [PCR] and sequencing of the galactosidase alpha [GLA] gene, including the intronic variant c.639 + 919G > A), and technetium-99 m-3,3-diphosphono-1,2-propanodicarboxylic acid (99mTc-DPD) scintigraphy, was also negative. This evidence concerns the gene GLA and Fabry disease.