Erratum to: Hum Genet DOI 10.1007/s00439-012-1151-9

In this paper, the Publisher inadvertently forgot to designate the second of the two co-corresponding authors and give his email address.

The second co-corresponding author is Changgui Li and his email address is lichanggui@medmail.com.cn

The two co-corresponding authors, X. Ma and C. Li, contributed equally to this work.