PMID- 27067623 OWN - NLM STAT- MEDLINE DCOM- 20170103 LR - 20170104 IS - 1873-2364 (Electronic) IS - 0960-8966 (Linking) VI - 26 IP - 4-5 DP - 2016 Apr-May TI - Congenital hypomyelinating neuropathy due to the association of a truncating mutation in PMP22 with the classical HNPP deletion. PG - 316-21 LID - S0960-8966(15)30052-3 [pii] LID - 10.1016/j.nmd.2016.01.004 [doi] AB - Congenital hypomyelinating neuropathy appears early in life, resulting in a delay of motor and sensory development. Mutations involve genes such as myelin protein zero (MPZ), peripheral myelin protein 22 (PMP22), and early growth response 2 (EGR2). We present a patient with two compound mutations in PMP22: a point mutation causing a premature STOP codon in exon 3 was inherited from the mother on the first allele, and the "typical" PMP22 deletion in the 17p11.2-p12 region was inherited from the father on the other allele. A sural biopsy was performed at age four. The patient has been followed from 28 months to 21 years of age; he presented significant sensory disturbances, with a slight motor deficit. PMP22 mRNA quantitation showed a severe decrease of PMP22 protein. No myelin sheaths were observed in the biopsy; mesaxons failed to form. The absence of PMP22 provides new insights into the role of this protein. CI - Copyright (c) 2016 Elsevier B.V. All rights reserved. FAU - Jouaud, Maxime AU - Jouaud M AD - Department 6309, Maintenance Myelinique et Neuropathies Peripheriques, Faculte de Medecine de Limoges, Universite de Limoges, Limoges, France. FAU - Gonnaud, Pierre-Marie AU - Gonnaud PM AD - Department of Neurology and Sleep Disorders, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, Lyon, France. FAU - Richard, Laurence AU - Richard L AD - Department of Neurology, National Reference Center for Rare Peripheral Neuropathies, University Hospital, Limoges, France. FAU - Latour, Philippe AU - Latour P AD - Department of Biochemistry, Centre de Biologie Est, Hospices Civils de Lyon, Lyon, France. FAU - Ollagnon-Roman, Elisabeth AU - Ollagnon-Roman E AD - Department of Genetics, Hospices Civils de Lyon, Lyon, France. FAU - Sturtz, Franck AU - Sturtz F AD - Department 6309, Maintenance Myelinique et Neuropathies Peripheriques, Faculte de Medecine de Limoges, Universite de Limoges, Limoges, France; Department of Biochemistry and Genetics, CHU de Limoges, Equipe d'accueil 6309, Maintenance Myelinique et Neuropathies Peripheriques, Universite de Limoges, Limoges, France. FAU - Mathis, Stephane AU - Mathis S AD - Department of Neurology, CHU Poitiers, University of Poitiers, 2 Rue de la Miletrie, 86021 Poitiers, France. FAU - Magy, Laurent AU - Magy L AD - Department of Neurology, National Reference Center for Rare Peripheral Neuropathies, University Hospital, Limoges, France. FAU - Vallat, Jean-Michel AU - Vallat JM AD - Department of Neurology, National Reference Center for Rare Peripheral Neuropathies, University Hospital, Limoges, France. Electronic address: jean-michel.vallat@unilim.fr. LA - eng PT - Case Reports PT - Journal Article DEP - 20160405 PL - England TA - Neuromuscul Disord JT - Neuromuscular disorders : NMD JID - 9111470 RN - 0 (Myelin Proteins) RN - 0 (PMP22 protein, human) RN - 0 (RNA, Messenger) RN - Charcot-Marie-Tooth disease, Type 4E SB - IM MH - Biopsy MH - Charcot-Marie-Tooth Disease/*genetics/pathology/physiopathology MH - Child, Preschool MH - Humans MH - Male MH - Myelin Proteins/*genetics/metabolism MH - Neural Conduction/genetics MH - *Point Mutation MH - RNA, Messenger/metabolism MH - *Sequence Deletion MH - Sural Nerve/pathology/physiopathology MH - Young Adult OTO - NOTNLM OT - CMT OT - Congenital hypomyelinating neuropathy OT - Nerve biopsy OT - PMP22 EDAT- 2016/04/14 06:00 MHDA- 2017/01/04 06:00 CRDT- 2016/04/13 06:00 PHST- 2015/09/28 00:00 [received] PHST- 2016/01/20 00:00 [revised] PHST- 2016/01/27 00:00 [accepted] PHST- 2016/04/13 06:00 [entrez] PHST- 2016/04/14 06:00 [pubmed] PHST- 2017/01/04 06:00 [medline] AID - S0960-8966(15)30052-3 [pii] AID - 10.1016/j.nmd.2016.01.004 [doi] PST - ppublish SO - Neuromuscul Disord. 2016 Apr-May;26(4-5):316-21. doi: 10.1016/j.nmd.2016.01.004. Epub 2016 Apr 5.