These genes were proposed to cause MSP subtypes and include: MATR3 (distal myopathy with vocal cord paralysis and ALS),10, 11TIA1 (Welander distal myopathy and ALS/FTD),1, 12, 13 and ANXA11 (IBM and ALS/FTD).14 Here, MATR3 is linked to frontotemporal dementia.