PMID- 28258942 OWN - NLM STAT- MEDLINE DCOM- 20180221 LR - 20181113 IS - 1873-2364 (Electronic) IS - 0960-8966 (Print) IS - 0960-8966 (Linking) VI - 27 IP - 5 DP - 2017 May TI - Late onset of neutral lipid storage disease due to novel PNPLA2 mutations causing total loss of lipase activity in a patient with myopathy and slight cardiac involvement. PG - 481-486 LID - S0960-8966(16)30812-4 [pii] LID - 10.1016/j.nmd.2017.01.011 [doi] AB - Neutral lipid storage disease with myopathy (NLSDM) presents with skeletal muscle myopathy and severe dilated cardiomyopathy in nearly 40% of cases. NLSDM is caused by mutations in the PNPLA2 gene, which encodes the adipose triglyceride lipase (ATGL). Here we report clinical and genetic findings of a patient carrying two novel PNPLA2 mutations (c.696+4A>G and c.553_565delGTCCCCCTTCTCG). She presented at age 39 with right upper limb abduction weakness slowly progressing over the years with asymmetric involvement of proximal upper and lower limb muscles. Cardiological evaluation through ECG and heart echo scan was normal until the age 53, when mild left ventricular diastolic dysfunction was detected. Molecular analysis revealed that only one type of PNPLA2 transcript, with exon 5 skipping, was expressed in patient cells. Such aberrant mRNA causes the production of a shorter ATGL protein, lacking part of the catalytic domain. This is an intriguing case, displaying severe PNPLA2 mutations with clinical presentation characterized by slight cardiac impairment and full expression of severe asymmetric myopathy. CI - Copyright (c) 2017 The Authors. Published by Elsevier B.V. All rights reserved. FAU - Missaglia, Sara AU - Missaglia S AD - Laboratory of Cellular Biochemistry and Molecular Biology, CRIBENS, Catholic University of the Sacred Heart, pz Buonarroti 30, Milan 20145, Italy; Department of Psychology, Catholic University of the Sacred Heart, Largo Gemelli, 1, Milan 20123, Italy. FAU - Maggi, Lorenzo AU - Maggi L AD - Neuromuscular Diseases and Neuroimmunology Unit, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy. FAU - Mora, Marina AU - Mora M AD - Neuromuscular Diseases and Neuroimmunology Unit, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy. FAU - Gibertini, Sara AU - Gibertini S AD - Neuromuscular Diseases and Neuroimmunology Unit, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy. FAU - Blasevich, Flavia AU - Blasevich F AD - Neuromuscular Diseases and Neuroimmunology Unit, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy. FAU - Agostoni, Piergiuseppe AU - Agostoni P AD - Centro Cardiologico Monzino, IRCCS, Milan, Italy; Department of Clinical and Community Sciences, University of Milan, Milan, Italy. FAU - Moro, Laura AU - Moro L AD - Department of Pharmaceutical Sciences, University of Piemonte Orientale "Amedeo-Avogadro", Novara, Italy. FAU - Cassandrini, Denise AU - Cassandrini D AD - Molecular Medicine, IRCCS Stella Maris, Pisa, Italy. FAU - Santorelli, Filippo Maria AU - Santorelli FM AD - Molecular Medicine, IRCCS Stella Maris, Pisa, Italy. FAU - Gerevini, Simonetta AU - Gerevini S AD - Servizio di Neuroradiologia, Ospedale San Raffaele, Milan, Italy. FAU - Tavian, Daniela AU - Tavian D AD - Laboratory of Cellular Biochemistry and Molecular Biology, CRIBENS, Catholic University of the Sacred Heart, pz Buonarroti 30, Milan 20145, Italy; Department of Psychology, Catholic University of the Sacred Heart, Largo Gemelli, 1, Milan 20123, Italy. Electronic address: daniela.tavian@unicatt.it. LA - eng PT - Case Reports PT - Journal Article DEP - 20170117 PL - England TA - Neuromuscul Disord JT - Neuromuscular disorders : NMD JID - 9111470 RN - EC 3.1.1.3 (Lipase) RN - EC 3.1.1.3 (PNPLA2 protein, human) RN - Neutral Lipid Storage Disease with Myopathy SB - IM MH - Cardiomyopathies/diagnostic imaging/*genetics/pathology/physiopathology MH - Female MH - Humans MH - Lipase/*deficiency/genetics MH - Lipid Metabolism, Inborn Errors/diagnostic imaging/*genetics/pathology/physiopathology MH - Middle Aged MH - Muscles/diagnostic imaging/pathology MH - Muscular Diseases/diagnostic imaging/*genetics/pathology/physiopathology MH - *Mutation PMC - PMC5424884 OTO - NOTNLM OT - Cardiomyopathy OT - Lipid droplets OT - Lipid metabolism OT - Neutral lipid storage disease with myopathy OT - PNPLA2 OT - Triglyceride lipase EDAT- 2017/03/05 06:00 MHDA- 2018/02/22 06:00 PMCR- 2017/05/01 CRDT- 2017/03/05 06:00 PHST- 2016/07/12 00:00 [received] PHST- 2016/11/19 00:00 [revised] PHST- 2017/01/15 00:00 [accepted] PHST- 2017/03/05 06:00 [pubmed] PHST- 2018/02/22 06:00 [medline] PHST- 2017/03/05 06:00 [entrez] PHST- 2017/05/01 00:00 [pmc-release] AID - S0960-8966(16)30812-4 [pii] AID - 10.1016/j.nmd.2017.01.011 [doi] PST - ppublish SO - Neuromuscul Disord. 2017 May;27(5):481-486. doi: 10.1016/j.nmd.2017.01.011. Epub 2017 Jan 17.