Location of MLPA probes within the FCGR2 and FCGR3 gene clusters. (A) Location of MLPA probes within the FCGR2 gene cluster. Several probes within each separate gene, being either specific for FCGR2A, FCGR2B, or FCGR2C were used to determine CNV and SNPs. Shown are only the probes to determine CNV as indicated by the arrows. For a more detailed probe description, including the SNP probes, we refer to Table S1. (B) Location of MLPA probes within the FCGR3 gene cluster. Several probes within each separate gene were used to determine CNV and the SNPs. Note that the probe that recognizes FCGR3B-HNA1a is the same that recognizes FCGR3A. For a more detailed probe description, we refer to Table S1.