title: HMG CoA reductase-inhibitor-related myopathy and the influence of drug interactions.
abstract: We report four cases of rhabdomyolysis and severe, disabling myopathy associated with HMG CoA reductase-inhibitor therapy. Patient developed symptoms following the addition of roxithromycin to combination lipid-lowering therapy with simvastatin and gemfibrozil. Patients 2 and 3 became symptomatic after developing acute on chronic renal impairment while taking simvastatin. The muscle biopsy of patient 3 revealed a necrotizing myopathy and the presence of inclusion bodies. Patient 4 developed symptoms within 4 weeks of starting cerivastatin monotherapy. The four cases illustrate the importance of considering the potential for drug interactions and making appropriate dosage adjustments for renal insufficiency in patients receiving HMG CoA reductase therapy.
authors.affiliation: Department of Aged Care, Bankstown-Lidcombe Hospital, Bankstown, New South Wales, Australia.
authors.forename: T
authors.initials: T
authors.lastname: Huynh
authors.forename: D
authors.initials: D
authors.lastname: Cordato
authors.forename: F
authors.initials: F
authors.lastname: Yang
authors.forename: T
authors.initials: T
authors.lastname: Choy
authors.forename: K
authors.initials: K
authors.lastname: Johnstone
authors.forename: F
authors.initials: F
authors.lastname: Bagnall
authors.forename: N
authors.initials: N
authors.lastname: Hitchens
authors.forename: R
authors.initials: R
authors.lastname: Dunn
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000900:Anti-Bacterial Agents / Q000009:adverse effects*; D004347:Drug Interactions; D005260:Female; D006801:Humans; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors / Q000009:adverse effects*; D009135:Muscular Diseases / Q000139:chemically induced*; D011725:Pyridines / Q000009:adverse effects; D051437:Renal Insufficiency / Q000139:chemically induced; D012206:Rhabdomyolysis / Q000139:chemically induced*; D015575:Roxithromycin / Q000009:adverse effects*; D019821:Simvastatin / Q000009:adverse effects
chemical_list: D000900:Anti-Bacterial Agents; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors; D011725:Pyridines; D015575:Roxithromycin; D019821:Simvastatin; C086276:cerivastatin