Chunk #27 — Results — Single Marker Association Tests

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Genome-wide association for major depressive disorder: a possible role for the presynaptic protein piccolo.

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Panel a of Figure 1 depicts the quantile-quantile plots (40) for these analyses. The observed p-values do not strongly depart from the p-value distribution expected by chance. Panel b of Figure 1 shows a plot of –log10(ptrend) by genomic location.