“…[ 20 , 22 ] Among the isolated CNS relapse cases, 43% had parenchymal lesions. [ 3 , 5 , 22 , 25 , 29 , 32 ] Despite ASCT, the prognosis after CNS relapse is extremely poor, with a very short median survival. [ 14 , 20 , 22 , 25 , 29 ] For MM patients who are ASCT candidates, IgA MM has been recognized as a risk factor that adversely affects survival.…”