19 February 1997

Pivnik et al (J.Med Genet. 1996, 33:772-778) reported a case Jacobsen syndrome in whom a brain stem auditory evoked response indicated moderate bilateral hearing loss. In other reports and reviews on Jacobsen syndrome that I have come across there are no indications of any hearing loss. The possible explanations are a) that hearing loss is not a common feature of this disorder b) that moderate hearing loss has not been assessed in these patients or c) that hearing loss is secondary to the craniofacial abnormalities and varies according to the severity. I would appreciate any comments or information.