Chen, XiaoliWang, JunMitchell, ElyseGuo, JinWang, LiwenZhang, YuHodge, Jennelle CShen, Yiping2014-10-012014Chen, Xiaoli, Jun Wang, Elyse Mitchell, Jin Guo, Liwen Wang, Yu Zhang, Jennelle C Hodge, and Yiping Shen. 2014. “Recurrent 8q13.2-13.3 microdeletions associated with Branchio-oto-renal syndrome are mediated by human endogenous retroviral (HERV) sequence blocks.” BMC Medical Genetics 15 (1): 90. doi:10.1186/s12881-014-0090-9. http://dx.doi.org/10.1186/s12881-014-0090-9.1471-2350http://nrs.harvard.edu/urn-3:HUL.InstRepos:12987412Background: Human endogenous retroviral (HERV) sequences are the remnants of ancient retroviral infection and comprise approximately 8% of the human genome. The high abundance and interspersed nature of homologous HERV sequences make them ideal substrates for genomic rearrangements. A role for HERV sequences in mediating human disease-associated rearrangement has been reported but is likely currently underappreciated. Methods and Results: In the present study, two independent de novo 8q13.2-13.3 microdeletion events were identified in patients with clinical features of Branchio-Oto-Renal (BOR) syndrome. Nucleotide-level mapping demonstrated the identical breakpoints, suggesting a recurrent microdeletion including multiple genes such as EYA1, SULF1, and SLCO5A1, which is mediated by HERV1 homologous sequences. Conclusions: These findings raise the potential that HERV sequences may more commonly underlie recombination of dosage sensitive regions associated with recurrent syndromes.en-USDe novo 8q13.2-13.3 microdeletionHuman endogenous retroviral (HERV) sequencesBranchio-oto-renal syndromeMesomelia-synostoses syndromeJournal Article2014-10-0110.1186/s12881-014-0090-9