Figure 4. Homozygosis for either the FY*A or FY*B allele is associated with low frequency of DBPII BIAbs.

Plasma samples were grouped according to DARC genotype, as described in legend of Figure 3. DBPII BIAbs were evaluated at three consecutive surveys by COS-7 cyto-adherence assay, with plasma at 1∶40 and DBPII –DARC binding inhibition ≥ 50% considered positive inhibition.