PMID- 24357569 OWN - NLM STAT- MEDLINE DCOM- 20141103 LR - 20221207 IS - 1552-4833 (Electronic) IS - 1552-4825 (Linking) VI - 164A IP - 3 DP - 2014 Mar TI - Microarray and FISH-based genotype-phenotype analysis of 22 Japanese patients with Wolf-Hirschhorn syndrome. PG - 597-609 LID - 10.1002/ajmg.a.36308 [doi] AB - Wolf-Hirschhorn syndrome (WHS) is a contiguous gene deletion syndrome of the distal 4p chromosome, characterized by craniofacial features, growth impairment, intellectual disability, and seizures. Although genotype-phenotype correlation studies have previously been published, several important issues remain to be elucidated including seizure severity. We present detailed clinical and molecular-cytogenetic findings from a microarray and fluorescence in situ hybridization (FISH)-based genotype-phenotype analysis of 22 Japanese WHS patients, the first large non-Western series. 4p deletions were terminal in 20 patients and interstitial in two, with deletion sizes ranging from 2.06 to 29.42 Mb. The new Wolf-Hirschhorn syndrome critical region (WHSCR2) was deleted in all cases, and duplication of other chromosomal regions occurred in four. Complex mosaicism was identified in two cases: two different 4p terminal deletions; a simple 4p terminal deletion and an unbalanced translocation with the same 4p breakpoint. Seizures began in infancy in 33% (2/6) of cases with small (<6 Mb) deletions and in 86% (12/14) of cases with larger deletions (>6 Mb). Status epilepticus occurred in 17% (1/6) with small deletions and in 87% (13/15) with larger deletions. Renal hypoplasia or dysplasia and structural ocular anomalies were more prevalent in those with larger deletions. A new susceptible region for seizure occurrence is suggested between 0.76 and 1.3 Mb from 4 pter, encompassing CTBP1 and CPLX1, and distal to the previously-supposed candidate gene LETM1. The usefulness of bromide therapy for seizures and additional clinical features including hypercholesterolemia are also described. CI - (c) 2013 Wiley Periodicals, Inc. FAU - Shimizu, Kenji AU - Shimizu K AD - Department of Medical Genetics, Shinshu University School of Medicine, Matsumoto, Japan; Division of Medical Genetics, Saitama Children's Medical Center, Saitama, Japan. FAU - Wakui, Keiko AU - Wakui K FAU - Kosho, Tomoki AU - Kosho T FAU - Okamoto, Nobuhiko AU - Okamoto N FAU - Mizuno, Seiji AU - Mizuno S FAU - Itomi, Kazuya AU - Itomi K FAU - Hattori, Shigeto AU - Hattori S FAU - Nishio, Kimio AU - Nishio K FAU - Samura, Osamu AU - Samura O FAU - Kobayashi, Yoshiyuki AU - Kobayashi Y FAU - Kako, Yuko AU - Kako Y FAU - Arai, Takashi AU - Arai T FAU - Tsutomu, Oh-ishi AU - Tsutomu OI FAU - Kawame, Hiroshi AU - Kawame H FAU - Narumi, Yoko AU - Narumi Y FAU - Ohashi, Hirofumi AU - Ohashi H FAU - Fukushima, Yoshimitsu AU - Fukushima Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131219 PL - United States TA - Am J Med Genet A JT - American journal of medical genetics. Part A JID - 101235741 SB - IM MH - Adolescent MH - Asian People/genetics MH - Child MH - Child, Preschool MH - Chromosome Aberrations MH - Chromosome Banding MH - Facies MH - Female MH - *Genetic Association Studies MH - Humans MH - *In Situ Hybridization, Fluorescence/methods MH - Infant MH - Japan MH - Male MH - *Oligonucleotide Array Sequence Analysis/methods MH - Phenotype MH - Wolf-Hirschhorn Syndrome/*diagnosis/*genetics OTO - NOTNLM OT - 4p deletion OT - Wolf-Hirschhorn syndrome OT - fluorescence in situ hybridization (FISH) OT - genotype-phenotype correlation OT - microarray analysis OT - mosaicism OT - seizures EDAT- 2013/12/21 06:00 MHDA- 2014/11/05 06:00 CRDT- 2013/12/21 06:00 PHST- 2013/04/27 00:00 [received] PHST- 2013/09/30 00:00 [accepted] PHST- 2013/12/21 06:00 [entrez] PHST- 2013/12/21 06:00 [pubmed] PHST- 2014/11/05 06:00 [medline] AID - 10.1002/ajmg.a.36308 [doi] PST - ppublish SO - Am J Med Genet A. 2014 Mar;164A(3):597-609. doi: 10.1002/ajmg.a.36308. Epub 2013 Dec 19.