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ISL1 is a major susceptibility gene for classic bladder exstrophy and a regulator of urinary tract development
Univ Bonn, Inst Human Genet, Bonn, Germany.;Univ Bonn, Dept Genom, Life & Brain Ctr, Bonn, Germany..
Univ Bonn, Inst Med Biometry Informat & Epidemiol, Bonn, Germany..
Wakayama Med Univ, Inst Adv Med, Dev Genet, Wakayama, Japan..
Wakayama Med Univ, Inst Adv Med, Dev Genet, Wakayama, Japan..
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2017 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 7, 42170Article in journal (Refereed) Published
Abstract [en]

Previously genome-wide association methods in patients with classic bladder exstrophy (CBE) found association with ISL1, a master control gene expressed in pericloacal mesenchyme. This study sought to further explore the genetics in a larger set of patients following-up on the most promising genomic regions previously reported. Genotypes of 12 markers obtained from 268 CBE patients of Australian, British, German Italian, Spanish and Swedish origin and 1,354 ethnically matched controls and from 92 CBE case-parent trios from North America were analysed. Only marker rs6874700 at the ISL1 locus showed association (p = 2.22 x 10(-08)). A meta-analysis of rs6874700 of our previous and present study showed a p value of 9.2 x 10(-19). Developmental biology models were used to clarify the location of ISL1 activity in the forming urinary tract. Genetic lineage analysis of Isl1-expressing cells by the lineage tracer mouse model showed Isl1-expressing cells in the urinary tract of mouse embryos at E10.5 and distributed in the bladder at E15.5. Expression of isl1 in zebrafish larvae staged 48 hpf was detected in a small region of the developing pronephros. Our study supports ISL1 as a major susceptibility gene for CBE and as a regulator of urinary tract development.

Place, publisher, year, edition, pages
2017. Vol. 7, 42170
National Category
Surgery Pediatrics Urology and Nephrology
Identifiers
URN: urn:nbn:se:uu:diva-316932DOI: 10.1038/srep42170ISI: 000393556500001PubMedID: 28176844OAI: oai:DiVA.org:uu-316932DiVA: diva2:1079688
Funder
German Research Foundation (DFG), RE 1723/1-1 JE 681/3-1
Available from: 2017-03-09 Created: 2017-03-09 Last updated: 2017-03-09Bibliographically approved

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Barker, GillianDi Grazia, MassimoKhor, Chiea Chuen
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