The Letter to JMG titled, Ancestral RET haplotype associated with Hirschsprung’s disease shows linkage disequilibrium at – 1249 (J Med Genet 2005;42:322–27) should have been published as a short report and the following abstract was omitted:

Background: Hirschsprung disease (HSCR) is a complex disorder with traditional germline mutations in RET in up to 30% of familial cases and in 3% of sporadic cases in a population-based series. We have previously …