PMID- 21754918 OWN - NLM STAT- MEDLINE DCOM- 20111103 LR - 20240323 IS - 1687-5303 (Electronic) IS - 1687-5214 (Print) IS - 1687-5214 (Linking) VI - 2011 DP - 2011 TI - Frequent loss of genome gap region in 4p16.3 subtelomere in early-onset type 2 diabetes mellitus. PG - 498460 LID - 10.1155/2011/498460 [doi] LID - 498460 AB - A small portion of Type 2 diabetes mellitus (T2DM) is familial, but the majority occurs as sporadic disease. Although causative genes are found in some rare forms, the genetic basis for sporadic T2DM is largely unknown. We searched for a copy number abnormality in 100 early-onset Japanese T2DM patients (onset age <35 years) by whole-genome screening with a copy number variation BeadChip. Within the 1.3-Mb subtelomeric region on chromosome 4p16.3, we found copy number losses in early-onset T2DM (13 of 100 T2DM versus one of 100 controls). This region surrounds a genome gap, which is rich in multiple low copy repeats. Subsequent region-targeted high-density custom-made oligonucleotide microarray experiments verified the copy number losses and delineated structural changes in the 1.3-Mb region. The results suggested that copy number losses of the genes in the deleted region around the genome gap in 4p16.3 may play significant roles in the etiology of T2DM. FAU - Kudo, Hirohito AU - Kudo H AD - Division of Molecular Metabolism and Diabetes, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan. FAU - Emi, Mitsuru AU - Emi M FAU - Ishigaki, Yasushi AU - Ishigaki Y FAU - Tsunoda, Uiko AU - Tsunoda U FAU - Hinokio, Yoshinori AU - Hinokio Y FAU - Ishii, Miho AU - Ishii M FAU - Sato, Hidenori AU - Sato H FAU - Yamada, Tetsuya AU - Yamada T FAU - Katagiri, Hideki AU - Katagiri H FAU - Oka, Yoshitomo AU - Oka Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110620 PL - United States TA - Exp Diabetes Res JT - Experimental diabetes research JID - 101274844 SB - IM MH - Adult MH - Age of Onset MH - Aged MH - Aged, 80 and over MH - Asian People/ethnology/genetics MH - Case-Control Studies MH - Chromosomes, Human, Pair 4/*genetics MH - DNA Copy Number Variations/*genetics MH - Diabetes Mellitus, Type 2/*epidemiology/ethnology/*genetics MH - Genetic Predisposition to Disease/genetics MH - Genetic Testing MH - Genome-Wide Association Study/methods MH - Humans MH - Japan MH - Middle Aged MH - Telomere/*genetics PMC - PMC3132460 EDAT- 2011/07/15 06:00 MHDA- 2011/11/04 06:00 PMCR- 2011/06/20 CRDT- 2011/07/15 06:00 PHST- 2010/10/06 00:00 [received] PHST- 2011/02/21 00:00 [revised] PHST- 2011/03/30 00:00 [accepted] PHST- 2011/07/15 06:00 [entrez] PHST- 2011/07/15 06:00 [pubmed] PHST- 2011/11/04 06:00 [medline] PHST- 2011/06/20 00:00 [pmc-release] AID - 10.1155/2011/498460 [doi] PST - ppublish SO - Exp Diabetes Res. 2011;2011:498460. doi: 10.1155/2011/498460. Epub 2011 Jun 20.