PMID- 25449072 OWN - NLM STAT- MEDLINE DCOM- 20150324 LR - 20141202 IS - 1003-9406 (Print) IS - 1003-9406 (Linking) VI - 31 IP - 6 DP - 2014 Dec TI - [Phenotype-genotype correlation analysis of 12 cases with Angelman/Prader-Willi syndrome]. PG - 708-12 LID - 10.3760/cma.j.issn.1003-9406.2014.06.006 [doi] AB - OBJECTIVE: To investigate the genotype-phenotype correlation in patients with Angelman syndrome/Prader-Willi syndrome (AS/PWS) and assess the application value of high-resolution single nucleotide polymorphism microarrays (SNP array) for such diseases. METHODS: Twelve AS/PWS patients were diagnosed through SNP array, fluorescence in situ hybridization (FISH) and karyotype analysis. Clinical characteristics were analyzed. RESULTS: Deletions ranging from 4.8 Mb to 7.0 Mb on chromosome 15q11.2-13 were detected in 11 patients. Uniparental disomy (UPD) was detected in only 1 patient. Patients with deletions could be divided into 2 groups, including 7 cases with class I and 4 with class II. The two groups however had no significant phenotypic difference. The UPD patient had relatively better development and language ability. Deletions of 6 patients were confirmed by FISH to be of de novo in origin. The risk to their sibs was determined to be less than 1%. CONCLUSION: The phenotypic differences between AS/PWS patients with class I and class II deletion need to be further studied. SNP array is useful in detecting and distinguishing of patients with deletion or UPD. This method may be applied for studying the genotype-phenotype association and the mechanism underlying AS/PWS. FAU - Chen, Chen AU - Chen C AD - State Key Laboratory of Medical Genetics, Central South University, Changsha, Hunan 410078, P. R. China. wulingqian@sklmg.edu.cn. FAU - Peng, Ying AU - Peng Y FAU - Xia, Yan AU - Xia Y FAU - Li, Haoxian AU - Li H FAU - Zhu, Huimin AU - Zhu H FAU - Pan, Qian AU - Pan Q FAU - Yin, Fei AU - Yin F FAU - Wu, Lingqian AU - Wu L LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhonghua Yi Xue Yi Chuan Xue Za Zhi JT - Zhonghua yi xue yi chuan xue za zhi = Zhonghua yixue yichuanxue zazhi = Chinese journal of medical genetics JID - 9425197 SB - IM MH - Angelman Syndrome/diagnosis/*genetics MH - Child, Preschool MH - Chromosome Deletion MH - Female MH - Genotype MH - Humans MH - Infant MH - Karyotyping MH - Male MH - Phenotype MH - Polymorphism, Single Nucleotide MH - Prader-Willi Syndrome/diagnosis/*genetics EDAT- 2014/12/03 06:00 MHDA- 2015/03/25 06:00 CRDT- 2014/12/03 06:00 PHST- 2014/12/03 06:00 [entrez] PHST- 2014/12/03 06:00 [pubmed] PHST- 2015/03/25 06:00 [medline] AID - 940631151 [pii] AID - 10.3760/cma.j.issn.1003-9406.2014.06.006 [doi] PST - ppublish SO - Zhonghua Yi Xue Yi Chuan Xue Za Zhi. 2014 Dec;31(6):708-12. doi: 10.3760/cma.j.issn.1003-9406.2014.06.006.