COL6A1 and myopathy: Similar proportions were found in an Egyptian cohort of 23 patients [17], but not in a larger cohort of 119 subjects with collagen VI-related myopathies of Spanish and American origin studied by Natera-de Benito and colleagues [30] or in recent sets of Asian cases in which COL6A1 variants were predominant [7,31,32]; however, the analysis of another Chinese cohort of patients showed a preponderance of COL6A2 variants [16].