In the analysis based on tumor subtype, the PCDH15 rs10763170 minor allele (T allele) was associated with somatotrophinomas under a dominant inheritance model (OR 1.55, 95% CI 1.02–2.35, p = 0.035) (Table 2); however, this association was no longer significant after applying the Bonferroni correction. This evidence concerns the gene PCDH15 and growth hormone-producing pituitary gland adenoma.