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Combined effects of CTTN (rs3802780) and MYLK (rs9840993) genotypes in severe asthma in African Americans. Histograms indicating the odds ratios for the different genotype combinations for the CTTN rs3802780 G/A and MYLK rs9840993 T/C compared to the reference non risk genotypes for both SNPs. Genotype counts in cases (above the diagonal) and controls (below the diagonal) are also shown.
