Next, we examined LIFR‐K620 acetylation, LIFR‐S1044 phosphorylation and AKT‐S473 phosphorylation using samples from patients with low‐grade prostatic intraepithelial neoplasia (low‐GPIN), high‐GPIN, or invasive adenocarcinoma by IHC. The gene discussed is LIFR; the disease is prostate intraepithelial neoplasia.