PMID- 25888713 OWN - NLM STAT- MEDLINE DCOM- 20160315 LR - 20220321 IS - 1468-6244 (Electronic) IS - 0022-2593 (Linking) VI - 52 IP - 7 DP - 2015 Jul TI - Pallister-Killian syndrome: a study of 22 British patients. PG - 454-64 LID - 10.1136/jmedgenet-2014-102877 [doi] AB - BACKGROUND: Pallister-Killian syndrome is a rare, sporadic condition caused by mosaic tetrasomy of the short arm of chromosome 12 (12p). The main features are intellectual disability, seizures, dysmorphic features and a variety of congenital malformations. Most available information comes from individual case reports. We report the results of a British study into Pallister-Killian syndrome, which is the first to provide comprehensive data on a population-based sample. METHOD: A detailed phenotypical study was carried out in Great Britain. All individuals with Pallister-Killian syndrome were eligible to participate. Each participant underwent a structured history, developmental assessment and clinical examination. Buccal mucosal samples were analysed by interphase fluorescence in situ hybridization (FISH) and blood samples by array comparative genomic hybridization (CGH). Genotype-phenotype correlations were sought in these tissues and existing skin biopsy reports. RESULTS: Twenty-two patients with Pallister-Killian syndrome, ranging from 4 months to 31 years were recruited and comprehensive data on each obtained. The birth incidence was 5.1 per million live births. Array CGH only suggested the diagnosis in 15.8% but buccal FISH could have made the diagnosis in 75.0%. There was no genotype-phenotype correlation in any of the tissues studied. This study shows that the high birth weights and profound intellectual disability classically described in Pallister-Killian syndrome are not universal. Mild or moderate intellectual disability was present in 27.6% of this cohort and all birth weights were within 2.67SD of the mean. New features which have not previously been recognised as part of Pallister-Killian syndrome include anhydrosis/hypohydrosis and episodic hyperventilation, suggesting involvement of the autonomic system. CI - Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions. FAU - Blyth, Moira AU - Blyth M AD - Yorkshire Regional Genetics Service, Chapel Allerton Hospital, Leeds, UK. FAU - Maloney, Viv AU - Maloney V AD - Wessex Regional Genetics Laboratory, Salisbury District Hospital, Salisbury, UK. FAU - Beal, Sarah AU - Beal S AD - Wessex Regional Genetics Laboratory, Salisbury District Hospital, Salisbury, UK. FAU - Collinson, Morag AU - Collinson M AD - Wessex Regional Genetics Laboratory, Salisbury District Hospital, Salisbury, UK. FAU - Huang, Shuwen AU - Huang S AD - Wessex Regional Genetics Laboratory, Salisbury District Hospital, Salisbury, UK Genomic Diagnostics Laboratory, Manchester Centre for Genomic Medicine, Saint Mary's Hospital, Manchester. FAU - Crolla, John AU - Crolla J AD - Wessex Regional Genetics Laboratory, Salisbury District Hospital, Salisbury, UK. FAU - Temple, I Karen AU - Temple IK AD - Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, Southampton, UK Wessex Clinical Genetics Service, Princess Anne Hospital, Southampton, UK. FAU - Baralle, Diana AU - Baralle D AD - Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, Southampton, UK Wessex Clinical Genetics Service, Princess Anne Hospital, Southampton, UK. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150417 PL - England TA - J Med Genet JT - Journal of medical genetics JID - 2985087R RN - Pallister Killian syndrome SB - IM MH - Abnormalities, Multiple/*genetics/pathology MH - Chromosome Disorders/*epidemiology/genetics/pathology MH - Chromosomes, Human, Pair 12/*genetics MH - Comparative Genomic Hybridization MH - Humans MH - In Situ Hybridization, Fluorescence MH - Intellectual Disability/*genetics/pathology MH - Mosaicism MH - *Phenotype MH - Tetrasomy/genetics/*pathology MH - United Kingdom/epidemiology OTO - NOTNLM OT - Chromosomal OT - Clinical genetics EDAT- 2015/04/19 06:00 MHDA- 2016/03/16 06:00 CRDT- 2015/04/19 06:00 PHST- 2014/11/06 00:00 [received] PHST- 2015/03/24 00:00 [accepted] PHST- 2015/04/19 06:00 [entrez] PHST- 2015/04/19 06:00 [pubmed] PHST- 2016/03/16 06:00 [medline] AID - jmedgenet-2014-102877 [pii] AID - 10.1136/jmedgenet-2014-102877 [doi] PST - ppublish SO - J Med Genet. 2015 Jul;52(7):454-64. doi: 10.1136/jmedgenet-2014-102877. Epub 2015 Apr 17.