PL12 and Ro52. Muscle pain and weakness was an initial symptom along with heavy rash, bad itching, mechanic hands, joint problems, then, the breathing..ILD. MYC worked for all symptoms and they don't see the inflammation in my body anymore. Rheumatologist wants to refer me out for legs since she doesn't believe it is related to myositis. As an fyi - prior, I have always been a very healthy and active person.