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Figure 1 Phosphocreatine/adenosine triphosphate (PCr/ATP) data for all familial hypertrophic cardiomyopathy (HCM) subjects and controls, HCM subjects without left ventricular hypertrophy (LVH), and subjects in each disease-gene group. Filled circles = HCM patients; open circles = controls; filled squares = subjects without LVH; open triangles = beta-myosin heavy chain (ß-MHC); filled triangles = cardiac troponin T (cTnT); open squares = myosin-binding protein C (MyBPC). p < 0.001 for all HCM patients vs. controls, HCM subjects without LVH vs. controls, and for each disease-gene group vs. controls; p = not significant between each disease-gene group.