平澤　恭子    Department   Other, Other    Position
Article types	Original article
Language	English
Peer review	Peer reviewed
Title	Microarray analysis of 50 patients reveals the critical chromosomal regions responsible for 1p36 deletion syndrome-related complications
Journal	Formal name：Brain&development Abbreviation：Brain Dev ISSN code：1872-7131 (Electronic)0387-7604 (Linking)
Volume, Issue, Page	37,pp.515-526
Author and coauthor	Shimada, S. Shimojima, K. Okamoto, N. Sangu, N. Hirasawa, K. Matsuo, M. Ikeuchi, M. Shimakawa, S. Shimizu, K. Mizuno, S. Kubota, M. Adachi, M. Saito, Y. Tomiwa, K. Haginoya, K. Numabe, H. Kako, Y. Hayashi, A. Sakamoto, H. Hiraki, Y. Minami, K. Takemoto, K. Watanabe, K. Miura, K. Chiyonobu, T. Kumada, T. Imai, K. Maegaki, Y. Nagata, S. Kosaki, K. Izumi, T. Nagai, T. Yamamoto, T.
Publication date	2014
Summary	OBJECTIVE: Monosomy 1p36 syndrome is the most commonly observed subtelomeric deletion syndrome. Patients with this syndrome typically have common clinical features, such as intellectual disability, epilepsy, and characteristic craniofacial features. METHOD: In cooperation with academic societies, we analyzed the genomic copy number aberrations using chromosomal microarray testing. Finally, the genotype-phenotype correlation among them was examined. RESULTS: We obtained clinical information of 86 patients who had been diagnosed with chromosomal deletions in the 1p36 region. Among them, blood samples were obtained from 50 patients (15 males and 35 females). The precise deletion regions were successfully genotyped. There were variable deletion patterns: pure terminal deletions in 38 patients (76%), including three cases of mosaicism; unbalanced translocations in seven (14%); and interstitial deletions in five (10%). Craniofacial/skeletal features, neurodevelopmental impairments, and cardiac anomalies were commonly observed in patients, with correlation to deletion sizes. CONCLUSION: The genotype-phenotype correlation analysis narrowed the region responsible for distinctive craniofacial features and intellectual disability into 1.8-2.1 and 1.8-2.2Mb region, respectively. Patients with deletions larger than 6.2Mb showed no ambulation, indicating that severe neurodevelopmental prognosis may be modified by haploinsufficiencies of KCNAB2 and CHD5, located at 6.2Mb away from the telomere. Although the genotype-phenotype correlation for the cardiac abnormalities is unclear, PRDM16, PRKCZ, and RERE may be related to this complication. Our study also revealed that female patients who acquired ambulatory ability were likely to be at risk for obesity.
DOI	10.1016/j.braindev.2014.08.002
Document No.	25172301