Interestingly, SRSF1 mRNA levels were directly correlated with the aberrant splicing variant SST5TMD4 in NFPTs (r: 0.425; p = 0.049), GHomas (r: 0.532; p = 0.002), and ACTHomas (r: 0.509; p = 0.026). Here, SRSF1 is linked to ACTH-producing pituitary gland adenoma.