OCA2 and oculocutaneous albinism type 2: The protein coding gene HERC2 (HECT and RLD domain containing E3 ubiquitin protein ligase 2) and its neighbouring gene OCA2 (Oculocutaneous albinism type 2) on chromosome 15 (15q13.1) have both previously demonstrated association with eye, skin and hair pigmentation (Kayser et al. 2008; Sturm and Larsson 2009; Liu et al. 2010).