There are no discrepancies for 58 (62%) of the 94 SNPs (Table 2). For 14 SNPs, there is a single discrepancy. For the remaining 22 SNPs, there are 2 or more discrepancies. For 8 of these 22 SNPs with multiple discrepancies, there is no evidence for family clustering. For the remaining 14 SNPs, however, the discrepancies give evidence of clustering in families. In almost every intra-familial discrepancy (83 out of 88 occurrences), the Illumina assay calls the genotype heterozygous.
