highly significantP<1.99e-108
Since the A and flanking C1 and C2 exons constitute only a small portion of the coding genome (∼10 million nucleotides as per our dataset), this enrichment is highly significant as revealed by a Chi-square test (P<1.99e-108), when comparing the ratios of driver vs. passenger mutations in alternative splicing neighborhoods as compared to the rest of the exome.