Is it safe to use statins in IIM patients if HMGCR antibodies are negative?  

Absolutely, yes. Statins are a very important drug for patients with cardiovascular disease and should be given to most patients with myositis except patients with known immune-mediated statin myopathy or HMGCR Positive antibody. I would monitor CK levels before and 3 and 6 months post statin, as we...