The association of attempted suicide with genetic variants in the SLC6A4 and TPH genes depends on the definition of suicidal behavior: a systematic review and meta-analysis.

When the rs1800532 variant was selected for attempted suicides, the heterogeneity decreased slightly (from 62.5–60.7%) and the pooled ORs showed a nominally significant harmful trend for the minor allele (1.22 (1.05–1.41), P =0.007, power of 99%) ( Figure 5 ).

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