Targeted next-generation sequencing on Hirschsprung disease: a pilot study exploits DNA pooling.

To adopt an efficient approach of identifying rare variants possibly related to Hirschsprung disease (HSCR), a pilot study was set up to evaluate the performance of a newly designed protocol for next generation targeted resquencing. In total, 20 Chinese HSCR patients and 20 Chinese sex-matched individuals with no HSCR were included, for which coding sequences (CDS) of 62 genes known to be in signaling pathways relevant to enteric nervous system development were selected for capture and sequencing. Blood DNAs from eight pools of five cases or controls were enriched by PCR-based RainDance technology (RDT) and then sequenced on a 454 FLX platform.

Screening of the RET gene of Vietnamese Hirschsprung patients identifies 2 novel missense mutations.

Background/purpose: Hirschsprung disease (HSCR; megacolon, congenital aganglionosis) is a congenital disorder characterized by the absence of ganglion cells along variable segments of the gut. Both rare (RV) and common variants of the RET gene are associated with HSCR. The aim of this study is to assess, for the first time, the variation in the RET gene of Vietnamese HSCR patients.