MBL2 and autosomal dominant cerebellar ataxia: Interestingly, a study of MBL2 variants in Benin, West Africa, found a higher frequency of heterozygosis, mainly in the allele C, in adults compared to newborns with SCA (47% vs. 35.3%; p = 0.004) (Dossou-Yovo et al., 2007).