OCA2 and oculocutaneous albinism type 2: 3 Aquaron Aquaron R R Berge-Lefranc Berge-Lefranc JL JL Lasseaux Lasseaux E E Plaisant Plaisant C C Arveiler Arveiler B B Brilliant Brilliant M M What can we learn from the distribution of the 2.7kb deletion mutation of the OCA2 gene in oculocutaneous albinism type 2 (OCA2) in Cameroon and in sub-Saharan countries?