Rare myopathy associated to MGUS, causing heart failure and responding to chemotherapy

International audienceMonoclonal gammopathy of unknow significance (MGUS) has recently been described as a possible cause of sporadic late onset nemaline myopathy (SLONM), which can lead to severe muscle impairment and respiratory insufficiency. We report the case of a man presenting a MGUS related SLONM, whose singularity was a severe heart involvement..