PMID- 26110021 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20150625 LR - 20240323 IS - 1755-8166 (Print) IS - 1755-8166 (Electronic) IS - 1755-8166 (Linking) VI - 8 DP - 2015 TI - 6q16.3q23.3 duplication associated with Prader-Willi-like syndrome. PG - 42 LID - 10.1186/s13039-015-0151-6 [doi] LID - 42 AB - BACKGROUND: Prader-Willi syndrome (PWS) is characterized by hypotonia, delayed neuropsychomotor development, overeating, obesity and mental deficiency. This phenotype is encountered in other conditions, defining Prader-Willi-like syndrome (PWLS). CASE PRESENTATION: We report a 14-year-old boy with a complex small supernumerary marker chromosome (sSMC) associated with PWLS. The propositus presents clinical features commonly found in patients with PWLS, including growth hormone deficit. Banding karyotype analysis and fluorescence in situ hybridization (FISH) revealed a marker derived from chromosome 6 and a neocentromere as suspected, but array-CGH enabled us to characterize this marker as a der(10)t(6;10)(6qter --> 6q23.3::10p11.1 --> 10p11.21)dn. As far as we know, this is the first diagnosed case of PWLS associated with a complex sSMC, involving a 30.9 Mb gain in the 6q16.3q23.3 region and a 3.5 Mb gain in the 10p11.21p11.1 region. Several genes have been mapped to the 6q region including the TCBA1 gene, which is associated with developmental delay and recurrent infections, the ENPP1 gene, associated with insulin resistance and susceptibility to obesity and the BMIQ3 gene, associated with body mass index (BMI). No OMIM gene was found in the smallest 10p11.21p11.1 region. CONCLUSIONS: We suggest that the duplicated chromosome segment 6q16.3q23.3 may be responsible for the phenotype of our case and may also be a candidate locus of PWLS. FAU - Desch, Laurent AU - Desch L AD - Laboratoire de Cytogenetique, Plateau Technique de Biologie, CHU de Dijon, Dijon, France. FAU - Marle, Nathalie AU - Marle N AD - Laboratoire de Cytogenetique, Plateau Technique de Biologie, CHU de Dijon, Dijon, France. FAU - Mosca-Boidron, Anne-Laure AU - Mosca-Boidron AL AD - Laboratoire de Cytogenetique, Plateau Technique de Biologie, CHU de Dijon, Dijon, France. FAU - Faivre, Laurence AU - Faivre L AD - Centre de reference maladies rares << anomalies du developpement et syndromes malformatifs >> de l'Est, Centre de Genetique, CHU de Dijon, Dijon, France. FAU - Eliade, Marie AU - Eliade M AD - Laboratoire de Cytogenetique, Plateau Technique de Biologie, CHU de Dijon, Dijon, France. FAU - Payet, Muriel AU - Payet M AD - Laboratoire de Cytogenetique, Plateau Technique de Biologie, CHU de Dijon, Dijon, France. FAU - Ragon, Clemence AU - Ragon C AD - Laboratoire de Cytogenetique, Plateau Technique de Biologie, CHU de Dijon, Dijon, France. FAU - Thevenon, Julien AU - Thevenon J AD - Laboratoire de Cytogenetique, Plateau Technique de Biologie, CHU de Dijon, Dijon, France. FAU - Aral, Bernard AU - Aral B AD - Laboratoire de Cytogenetique, Plateau Technique de Biologie, CHU de Dijon, Dijon, France. FAU - Ragot, Sylviane AU - Ragot S AD - Laboratoire de Cytogenetique, Plateau Technique de Biologie, CHU de Dijon, Dijon, France. FAU - Ardalan, Azarnouche AU - Ardalan A AD - Laboratoire Biomnis, Lyon, France. FAU - Dhouibi, Nabila AU - Dhouibi N AD - Service de Pediatrie, CH d'Auxerre, Auxerre, France. FAU - Bensignor, Candace AU - Bensignor C AD - Service de Pediatrie, CHU Dijon, Dijon, France. FAU - Thauvin-Robinet, Christel AU - Thauvin-Robinet C AD - Centre de reference maladies rares << anomalies du developpement et syndromes malformatifs >> de l'Est, Centre de Genetique, CHU de Dijon, Dijon, France. FAU - El Chehadeh, Salima AU - El Chehadeh S AD - Centre de reference maladies rares << anomalies du developpement et syndromes malformatifs >> de l'Est, Centre de Genetique, CHU de Dijon, Dijon, France. FAU - Callier, Patrick AU - Callier P AD - Laboratoire de Cytogenetique, Plateau Technique de Biologie, CHU de Dijon, Dijon, France. LA - eng PT - Case Reports DEP - 20150625 PL - England TA - Mol Cytogenet JT - Molecular cytogenetics JID - 101317942 PMC - PMC4479069 OTO - NOTNLM OT - Complex sSMC, Array-CGH OT - Prader-Willi-like syndrome, 6q16.3q23.3 EDAT- 2015/06/26 06:00 MHDA- 2015/06/26 06:01 PMCR- 2015/06/25 CRDT- 2015/06/26 06:00 PHST- 2015/04/24 00:00 [received] PHST- 2015/06/10 00:00 [accepted] PHST- 2015/06/26 06:00 [entrez] PHST- 2015/06/26 06:00 [pubmed] PHST- 2015/06/26 06:01 [medline] PHST- 2015/06/25 00:00 [pmc-release] AID - 151 [pii] AID - 10.1186/s13039-015-0151-6 [doi] PST - epublish SO - Mol Cytogenet. 2015 Jun 25;8:42. doi: 10.1186/s13039-015-0151-6. eCollection 2015.