Fig. 1From: Genetics of early-life head circumference and genetic correlations with neurological, psychiatric and cognitive outcomesManhattan plot of results of the discovery meta-analysis of 21 GWAS. On the x-axis the chromosomes are shown. On the y-axis the − log 10 of the P value is shown. Novel SNPs are shown in green. Known SNPs are shown in black. The genome wide significance cutoff of 5 × 10–8 is represented by the grey dotted lineBack to article page