Table 1. Subjects' information.

Subject	Age*	Sex	PYGM genotype	PYGM mRNA (%)
P1	44	Male	p.R771PfsX33/p.R771PfsX33	40
P2	55	Male	p.R771PfsX33/p.R771PfsX33	32
C1	43	Male	wild type/wild type	94
C2	46	Male	wild type/wild type	107

*Age at the time the skeletal muscle biopsy was collected. GenBank reference sequence was NP_005600.1. Expression values were calculated considering 100% the mean results obtained in the controls (C1, C2).