Correction to: European Journal of Human Genetics (2010) 18, 330–335; doi: 10.1038/ejhg.2009.175; published online 14 October 2009

In the above article, the missense mutation p.P544T was incorrectly annotated in the abstract, text and legends of Figures 2 and 4. The correct annotation is p.P554T, as described in Figures 4 and 5 and Table 2.

The authors would like to apologise for their error.