PMID- 23706560 OWN - NLM STAT- MEDLINE DCOM- 20140204 LR - 20151119 IS - 1095-8673 (Electronic) IS - 0022-4804 (Linking) VI - 184 IP - 2 DP - 2013 Oct TI - Clinical-pathological implication of human leukocyte antigen-F-positive gastric adenocarcinoma. PG - 802-6 LID - S0022-4804(13)00346-6 [pii] LID - 10.1016/j.jss.2013.04.003 [doi] AB - BACKGROUND: Human leukocyte antigen (HLA)-F is a nonclassical HLA class I molecule that shows aberrant expression in cancer cells. Although the clinical implications of HLA-F expression in cancer patients have been described, the specific significance of this antigen in gastrointestinal cancer remains unclear. The present study examined the expression pattern and clinical implications of HLA-F in gastric adenocarcinoma. PATIENTS AND METHODS: HLA-F expression was assessed in 179 patients by immunohistochemistry, and its association with clinical parameters including patient survival was analyzed. RESULTS: HLA-F expression was positive in 30.7% (55/179) of patients and in 50.0% (90/179) of peritumoral infiltrating lymphocytes. HLA-F expression in gastric adenocarcinoma was significantly correlated with the depth of invasion, nodal involvement, and lymphatic and venous invasions (P < 0.01, all). HLA-F positivity of infiltrating cells near the tumor showed no correlation with clinicopathological features. HLA-F-positive patients had a significantly worse prognosis than HLA-F-negative patients (P = 0.012). However, HLA-F expression was not an independent prognostic factor in multivariate analysis. CONCLUSIONS: The present study provides the first evidence that neo-HLA-F expression is of clinical significance in gastric adenocarcinoma. HLA-F expression in gastric adenocarcinoma may promote the aggressive behavior of tumors by suppressing the activity of antitumor immune effector cells. CI - Copyright (c) 2013 Elsevier Inc. All rights reserved. FAU - Ishigami, Sumiya AU - Ishigami S AD - Department of Digestive Surgery, Breast and Thyroid Surgery, Kagoshima University School of Medicine, Kagoshima, Japan. Electronic address: ishiga@m.kufm.kagoshima-u.ac.jp. FAU - Arigami, Takaaki AU - Arigami T FAU - Setoyama, Testuro AU - Setoyama T FAU - Okumura, Hiroshi AU - Okumura H FAU - Sasaki, Ken AU - Sasaki K FAU - Uchikado, Yasuto AU - Uchikado Y FAU - Kurahara, Hiroshi AU - Kurahara H FAU - Kijima, Yuko AU - Kijima Y FAU - Nishizono, Yuka AU - Nishizono Y FAU - Nakajo, Akihiro AU - Nakajo A FAU - Natsugoe, Shoji AU - Natsugoe S LA - eng PT - Journal Article DEP - 20130426 PL - United States TA - J Surg Res JT - The Journal of surgical research JID - 0376340 RN - 0 (Biomarkers, Tumor) RN - 0 (HLA-F antigens) RN - 0 (Histocompatibility Antigens Class I) SB - IM MH - Adenocarcinoma/*metabolism/*mortality MH - Adult MH - Aged MH - Aged, 80 and over MH - Biomarkers, Tumor/metabolism MH - Female MH - Histocompatibility Antigens Class I/*metabolism MH - Humans MH - Incidence MH - Lymphatic Metastasis/diagnosis MH - Male MH - Middle Aged MH - Multivariate Analysis MH - Prognosis MH - Retrospective Studies MH - Stomach Neoplasms/*metabolism/*mortality MH - Survival Rate OTO - NOTNLM OT - Gastric adenocarcinoma OT - HLA-F OT - Infiltrating cells OT - Surgical outcome EDAT- 2013/05/28 06:00 MHDA- 2014/02/05 06:00 CRDT- 2013/05/28 06:00 PHST- 2012/10/12 00:00 [received] PHST- 2013/03/27 00:00 [revised] PHST- 2013/04/04 00:00 [accepted] PHST- 2013/05/28 06:00 [entrez] PHST- 2013/05/28 06:00 [pubmed] PHST- 2014/02/05 06:00 [medline] AID - S0022-4804(13)00346-6 [pii] AID - 10.1016/j.jss.2013.04.003 [doi] PST - ppublish SO - J Surg Res. 2013 Oct;184(2):802-6. doi: 10.1016/j.jss.2013.04.003. Epub 2013 Apr 26.