• Medicine · Jan 2021

    The clinical significance of HERV-H LTR -associating 2 expression in cervical adenocarcinoma.

    • Jung Mi Byun, Hwa Jin Cho, Ha Young Park, Dae Sim Lee, In Hak Choi, Young Nam Kim, Chul Hoi Jeong, Da Hyun Kim, Do Hwa Im, Byoung Jin Min, Kyung Bok Lee, Moon Su Sung, and Dae Hoon Jeong.
    • Department of Obstetrics and Gynecology, Inje University, College of Medicine, Busan Paik Hospital.
    • Medicine (Baltimore). 2021 Jan 8; 100 (1): e23691e23691.

    AbstractHERV-H LTR -associating 2 (HHLA2) is a recently discovered member of the B7-family of immune checkpoint molecules that is overexpressed in several types of cancer. The aim of the present study was to investigate the expression of HHLA2 in cervical adenocarcinoma (AC) and the relationship between its expression and clinicopathological factors to assess its use as a potential marker for AC prognosis.This study included 76 patients diagnosed with cervical AC. Their resected specimens were obtained and a tissue microarray was constructed. Expression of HHLA2 was detected by the immunohistochemistry. Based on the follow-up data, correlation of HHLA2 expression and clinicopathological features, including overall survival (OS) and disease-free survival, was evaluated. Furthermore, we investigated the correlation between the expression of HHLA2 and programmed death ligand 1 (PD-L1).A total of 76 cases of invasive cervical AC were evaluated. High HHLA2 expression was detected in 62 cases (81.6%) and low HHLA2 expression was presented in 14 cases (18.4%). HHLA2 expression showed a significant negative correlation with lymph node metastasis (P = .011). Disease free survival was 75.0% and 49.0% in high-expression and the low expression group, respectively (P = .057). Although there was no statistical significance, an improved OS was observed in the high expression group (83.1% vs 64.9%, P = .479). Further, the expression of HHLA2 and PD-L1 correlated positively (P = .005). Thus, an improved OS was observed in the PD-L1 expression group (90.7% vs 66.2%, P = .037).High expression of HHLA2 is related to tumor progression and prognosis in patients with cervical AC. Therefore, HHLA2 may be a potential biomarker for predicting prognosis of cervical AC.Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc.

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