Correction to: European Journal of Human Genetics advance online publication, 23 December 2009; doi:10.1038/ejhg.2009.220

Since the publication of the above paper, the authors have identified an error. In the Results section, under the sub-heading ‘Sequencing of the CASK gene’, Family 123, the first sentence is incorrect; 2756 (c.2756T>C) should be replaced with 2755 (c.2755T>C). The correct sentence is:

A T to C change in exon 27 at position 2755 (c.2755T>C) was identified, resulting in the substitution of arginine for tryptophan at position 919 (p.W919R) at the C-terminal end of the CASK protein (Figure 2).

The authors would like to apologise for this mistake.