APOL1 and Schnyder corneal dystrophy: In this study, we investigated the associations of these 26 SNPs in addition to four previously characterised kidney dysfunction-related variants, including APOL1 (G1 or G2) for rs60910145, rs73885319 and rs71785313, and HMOX1 for rs3074372 and rs743811, relevant to populations of African ancestry (Pattaro et al., 2016), e.g., SCD patients from Cameroon.