However, the exact mechanism of HCQ cardiotoxicity remains unclear and it is difficult to identify risk factors. We present a case of twin sisters who both suffered from systemic lupus erythematosus (SLE) and HCQ-induced cardiomyopathy presenting with decompensated heart failure (HF), suggesting that genetic predisposition might be a factor in HCQ-induced cardiomyopathy. Plaquenil arthritis foundation Neutropenia hydroxychloroquine In September 2013, skeletal muscle biopsies were also obtained, which showed similar findings using light microscopy. Electron microscopy showed vacuoles containing myeloid bodies and curvilinear inclusion bodies, the latter of which is pathognomonic for either neuronal ceroid lipofuscinosis NCL or HCQ-induced cardiomyopathy Fig. 3C. The. Myeloid, and curvilinear bodies. The diagnosis of hydroxychloroquine-induced cardiomyopathy was made based on the clinical, hemodynamic, and pathologic findings. This is the first case report describing chloroquine-induced cardiomyopa-thy involving the heart conduction system. Korean Circ J 2010;4-608 Oct 30, 2019 Daily hydroxychloroquine base doses 5 mg/kg actual body weight were associated with an ~10% risk of retinal toxicity within 10 years of treatment and an almost 40% risk after 20 years of therapy. Risk is most accurately assessed on the basis of duration of use relative to daily dose/body weight Marmor AAO 2016; Melles 2014. Retinal toxicity, neuromyopathy, and cardiac toxicity are recognized toxicities following prolonged use (1). Hydroxychloroquine (HCQ) is one of the antimalarial drugs that have been used for decades to treat rheumatic diseases (1). Curvilinear bodies hydroxychloroquine cardiomyopathy Hydroxychloroquine-Induced Toxic Myopathy Causing Respiratory., A Case of Chloroquine-Induced Cardiomyopathy That. Plaquenil screening recommendations Hydroxychloroquine myopathy is thought to be underestimated with prior reports noting normal CK levels in patients with typical biopsy features of vacuoles and curvilinear bodies. Duration of drug and dose are not well defined in myopathy; onset of symptoms may vary months to years; typical symptoms are nonspecific mild to moderate proximal muscle weakness with slightly elevated to normal CK levels. Hydroxychloroquine and Colchicine Induced Myopathy The.. Hydroxychloroquine Professional Patient Advice -. HYDROXYCHLOROQUINE CARDIOMYOPATHY IN A PATIENT WITH GENE.. Electron microscopy of the myocytes demonstrated dense, myeloid, and curvilinear bodies. The diagnosis of hydroxychloroquine-induced cardiomyopathy was made based on the clinical, hemodynamic, and pathologic findings. Abstract. Chloroquine Hydroxychloroquine-induced cardiomyopathy is a rare but potentially life-threatening condition. Cessation of the culprit drug, along with aggressive afterload reduction therapy, has been associated with halting of disease progress and even improvement in patients' clinical and histologic status. Hydroxychloroquine and chloroquine are often used for long-term treatment of rheumatic diseases and for malaria prophylaxis. Hydroxychloroquine- and chloroquine-induced cardiomyopathy have well-described microscopic features, with the classic electron microscopic findings of myelin figures myeloid bodies.