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- W2076232020 abstract "Indoleamine 2,3-dioxygenase (IDO) is a tryptophan-catabolizing enzyme that induces tolerance to host immune surveillance within the tumor microenvironment. The present study aimed to investigate IDO expression and its prognostic significance in invasive cervical cancer.Immunohistochemical expression of IDO in tumor tissues and its association with clinicopathological factors and survival were analyzed in 112 stage IB-IIB cervical cancer patients treated with radical hysterectomy and pelvic lymphadenectomy.IDO was diffusely expressed in tumor cells in 29 (26%) cases and focally expressed at the invasive front in 29 (26%) cases, while the other 54 (48%) cases were IDO-negative. IDO expression was positively correlated with clinical stage, lymph node metastasis, and lymph-vascular space invasion, but not with histological type. Patients with diffuse IDO expression had significantly reduced overall survival (OS) and disease-free survival (DFS) compared to patients with no IDO expression. The 5-year OS/DFS rates for the IDO-negative, focally positive, and diffusely positive groups were 92.3%/84.9%, 89.5%/75.8%, and 65.5%/51.7%, respectively. When we analyzed patients with stage IB disease alone (n=67), the OS and DFS for the IDO-diffusely positive group were significantly lower than those for the IDO-negative group. In multivariate analysis, diffuse IDO expression was found to be an independent prognostic factor for impaired OS and DFS.Diffuse expression of IDO in the tumor obtained from Stage IB-IIB cervical cancer patients who underwent radical hysterectomy was correlated with an unfavorable clinical outcome. These findings suggest that IDO may be a novel post-operative prognostic indicator for stage IB-IIB cervical cancer." @default.
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- W2076232020 date "2010-06-01" @default.
- W2076232020 modified "2023-09-27" @default.
- W2076232020 title "Indoleamine 2,3-dioxygenase expression predicts impaired survival of invasive cervical cancer patients treated with radical hysterectomy" @default.
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- W2076232020 doi "https://doi.org/10.1016/j.ygyno.2010.02.028" @default.
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