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Relationship Between Kita-Kyushu Lung Cancer Antigen-1 Expression and Prognosis of Cases with Lung Squamous Cell Carcinoma

Overview
Specialty Oncology
Date 2022 Feb 4
PMID 35116371
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Abstract

Background: Previously, we identified the highly immunogenic cancer testicular antigen named Kita-Kyushu Lung Cancer antigen-1 (KK-LC-1). In this study, we analyzed the effect of KK-LC-1 expression on the prognosis of patients with resected squamous cell lung cancer.

Methods: Fifty squamous cell lung cancer patients, who received complete resection, were enrolled in this study. The expressions of KK-LC-1, CD8, human leukocyte antigen (HLA) class I, and programmed cell death protein ligand-1 (PD-L1) were assessed via immunohistochemistry staining using the specimens obtained from the participants. The association between the expression of the abovementioned molecules and patient prognosis was investigated.

Results: KK-LC-1 expression was observed in 21 of 50 recruited cases (42%). However, no significant correlation was found between KK-LC-1 expression and patient prognosis. The prognosis was significantly better in lung cancer cases with KK-LC-1 expression in which CD8 T cells infiltrated the tumor. Regardless of the HLA class I expression or the PD-L1 expression, the KK-LC-1 expression in squamous cell lung cancer could not be detected as a significant prognostic factor. Furthermore, considering the polarity of the cancer tissue as epithelium, staining of KK-LC-1 tended to be strong in the area corresponding to the basal side of the tumor tissue. The Ki-67 expression was frequently observed in cancer cells on the basal side, which was consistent with the KK-LC-1 expression in representative four cases with KK-LC-1-positive squamous cell lung cancer.

Conclusions: Our results indicated that lung squamous cell cancer patients with KK-LC-1 expression and the tumor infiltrating CD8 T cells might exhibit better prognosis. KK-LC-1 might be highly expressed in cancer cells with high proliferative capacity. Larger cohort analysis is still required for further elucidation and validation of the results of this study.

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References
1.
Shigematsu Y, Hanagiri T, Shiota H, Kuroda K, Baba T, Mizukami M . Clinical significance of cancer/testis antigens expression in patients with non-small cell lung cancer. Lung Cancer. 2009; 68(1):105-10. DOI: 10.1016/j.lungcan.2009.05.010. View

2.
Stevanovic S, Pasetto A, Helman S, Gartner J, Prickett T, Howie B . Landscape of immunogenic tumor antigens in successful immunotherapy of virally induced epithelial cancer. Science. 2017; 356(6334):200-205. PMC: 6295311. DOI: 10.1126/science.aak9510. View

3.
Chiba T, Ohtani H, Mizoi T, Naito Y, Sato E, Nagura H . Intraepithelial CD8+ T-cell-count becomes a prognostic factor after a longer follow-up period in human colorectal carcinoma: possible association with suppression of micrometastasis. Br J Cancer. 2004; 91(9):1711-7. PMC: 2410024. DOI: 10.1038/sj.bjc.6602201. View

4.
Fukuyama T, Hanagiri T, Takenoyama M, Ichiki Y, Mizukami M, So T . Identification of a new cancer/germline gene, KK-LC-1, encoding an antigen recognized by autologous CTL induced on human lung adenocarcinoma. Cancer Res. 2006; 66(9):4922-8. DOI: 10.1158/0008-5472.CAN-05-3840. View

5.
Takahashi Y, Fukuyama T, Futawatari N, Ichiki Y, Ohmiya H, Chuman M . Expression of Kita-Kyushu Lung Cancer Antigen-1 as Detected by a Novel Monoclonal Antibody in Gastric Cancer. Anticancer Res. 2019; 39(11):6259-6263. DOI: 10.21873/anticanres.13835. View