High Density of CD16+ Tumor-Infiltrating Immune Cells in Recurrent Ovarian Cancer Is Associated with Enhanced Responsiveness to Chemotherapy and Prolonged Overall Survival

Background: Ovarian cancer (OC) is the most aggressive and fatal malignancy of the female reproductive system. Debulking surgery with adjuvant chemotherapy represents the standard treatment, but recurrence rates are particularly high. Over the past decades, the association between the immune system...

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Autores principales: Alexandros Lalos, Ornella Neri, Caner Ercan, Alexander Wilhelm, Sebastian Staubli, Alberto Posabella, Benjamin Weixler, Luigi Terracciano, Salvatore Piscuoglio, Sylvia Stadlmann, Giulio C. Spagnoli, Raoul A. Droeser, Gad Singer
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:8c772b4699c84f8d9b365a85477f6f462021-11-25T17:03:57ZHigh Density of CD16+ Tumor-Infiltrating Immune Cells in Recurrent Ovarian Cancer Is Associated with Enhanced Responsiveness to Chemotherapy and Prolonged Overall Survival10.3390/cancers132257832072-6694https://doaj.org/article/8c772b4699c84f8d9b365a85477f6f462021-11-01T00:00:00Zhttps://www.mdpi.com/2072-6694/13/22/5783https://doaj.org/toc/2072-6694Background: Ovarian cancer (OC) is the most aggressive and fatal malignancy of the female reproductive system. Debulking surgery with adjuvant chemotherapy represents the standard treatment, but recurrence rates are particularly high. Over the past decades, the association between the immune system and cancer progression has been extensively investigated. However, the interaction between chemotherapy and cancer immune infiltration is still unclear. In this study, we examined the prognostic role of CD16 expression in OC, as related to the effectiveness of standard adjuvant chemotherapy treatment. Methods: We analyzed the infiltration by immune cells expressing CD16, a well-characterized natural killer (NK) and myeloid cell marker, in a tissue microarray (TMA) of 47 patient specimens of primary OCs and their matching recurrences by immunohistochemistry (IHC). We analyzed our data first in the whole cohort, then in the primary tumors, and finally in recurrences. We focused on recurrence-free survival (RFS), overall survival (OS), and chemosensitivity. Chemosensitivity was defined as RFS of more than 6 months. Results: There was no significant correlation between CD16 expression and prognosis in primary carcinomas. However, interestingly, a high density of CD16-expressing tumor-infiltrating immune cells (TICs) in recurrent carcinoma was associated with better RFS (<i>p</i> = 0.008) and OS (<i>p</i> = 0.029). Moreover, high CD16 cell density in recurrent ovarian carcinoma showed a significant association with chemosensitivity (<i>p</i> = 0.034). Univariate Cox regression analysis revealed that the high expression of CD16+ TIC in recurrent cancer biopsies is significantly associated with an increased RFS (HR = 0.49; 95% CI 0.24–0.99; <i>p</i> = 0.047) and OS (HR = 0.28; 95% CI 0.10–0.77; <i>p</i> = 0.013). However, this was not independent of known prognostic factors such as age, FIGO stage, resection status, and the number of chemotherapy cycles. Conclusions: The high density of CD16-expressing TICs in recurrent ovarian cancer is associated with a better RFS and OS, thereby suggesting a previously unsuspected interaction between standard OC chemotherapy and immune cell infiltration.Alexandros LalosOrnella NeriCaner ErcanAlexander WilhelmSebastian StaubliAlberto PosabellaBenjamin WeixlerLuigi TerraccianoSalvatore PiscuoglioSylvia StadlmannGiulio C. SpagnoliRaoul A. DroeserGad SingerMDPI AGarticleovarian cancerCD16tissue microarrayimmunohistochemistryprognosisbiomarkerNeoplasms. Tumors. Oncology. Including cancer and carcinogensRC254-282ENCancers, Vol 13, Iss 5783, p 5783 (2021)
institution DOAJ
collection DOAJ
language EN
topic ovarian cancer
CD16
tissue microarray
immunohistochemistry
prognosis
biomarker
Neoplasms. Tumors. Oncology. Including cancer and carcinogens
RC254-282
spellingShingle ovarian cancer
CD16
tissue microarray
immunohistochemistry
prognosis
biomarker
Neoplasms. Tumors. Oncology. Including cancer and carcinogens
RC254-282
Alexandros Lalos
Ornella Neri
Caner Ercan
Alexander Wilhelm
Sebastian Staubli
Alberto Posabella
Benjamin Weixler
Luigi Terracciano
Salvatore Piscuoglio
Sylvia Stadlmann
Giulio C. Spagnoli
Raoul A. Droeser
Gad Singer
High Density of CD16+ Tumor-Infiltrating Immune Cells in Recurrent Ovarian Cancer Is Associated with Enhanced Responsiveness to Chemotherapy and Prolonged Overall Survival
description Background: Ovarian cancer (OC) is the most aggressive and fatal malignancy of the female reproductive system. Debulking surgery with adjuvant chemotherapy represents the standard treatment, but recurrence rates are particularly high. Over the past decades, the association between the immune system and cancer progression has been extensively investigated. However, the interaction between chemotherapy and cancer immune infiltration is still unclear. In this study, we examined the prognostic role of CD16 expression in OC, as related to the effectiveness of standard adjuvant chemotherapy treatment. Methods: We analyzed the infiltration by immune cells expressing CD16, a well-characterized natural killer (NK) and myeloid cell marker, in a tissue microarray (TMA) of 47 patient specimens of primary OCs and their matching recurrences by immunohistochemistry (IHC). We analyzed our data first in the whole cohort, then in the primary tumors, and finally in recurrences. We focused on recurrence-free survival (RFS), overall survival (OS), and chemosensitivity. Chemosensitivity was defined as RFS of more than 6 months. Results: There was no significant correlation between CD16 expression and prognosis in primary carcinomas. However, interestingly, a high density of CD16-expressing tumor-infiltrating immune cells (TICs) in recurrent carcinoma was associated with better RFS (<i>p</i> = 0.008) and OS (<i>p</i> = 0.029). Moreover, high CD16 cell density in recurrent ovarian carcinoma showed a significant association with chemosensitivity (<i>p</i> = 0.034). Univariate Cox regression analysis revealed that the high expression of CD16+ TIC in recurrent cancer biopsies is significantly associated with an increased RFS (HR = 0.49; 95% CI 0.24–0.99; <i>p</i> = 0.047) and OS (HR = 0.28; 95% CI 0.10–0.77; <i>p</i> = 0.013). However, this was not independent of known prognostic factors such as age, FIGO stage, resection status, and the number of chemotherapy cycles. Conclusions: The high density of CD16-expressing TICs in recurrent ovarian cancer is associated with a better RFS and OS, thereby suggesting a previously unsuspected interaction between standard OC chemotherapy and immune cell infiltration.
format article
author Alexandros Lalos
Ornella Neri
Caner Ercan
Alexander Wilhelm
Sebastian Staubli
Alberto Posabella
Benjamin Weixler
Luigi Terracciano
Salvatore Piscuoglio
Sylvia Stadlmann
Giulio C. Spagnoli
Raoul A. Droeser
Gad Singer
author_facet Alexandros Lalos
Ornella Neri
Caner Ercan
Alexander Wilhelm
Sebastian Staubli
Alberto Posabella
Benjamin Weixler
Luigi Terracciano
Salvatore Piscuoglio
Sylvia Stadlmann
Giulio C. Spagnoli
Raoul A. Droeser
Gad Singer
author_sort Alexandros Lalos
title High Density of CD16+ Tumor-Infiltrating Immune Cells in Recurrent Ovarian Cancer Is Associated with Enhanced Responsiveness to Chemotherapy and Prolonged Overall Survival
title_short High Density of CD16+ Tumor-Infiltrating Immune Cells in Recurrent Ovarian Cancer Is Associated with Enhanced Responsiveness to Chemotherapy and Prolonged Overall Survival
title_full High Density of CD16+ Tumor-Infiltrating Immune Cells in Recurrent Ovarian Cancer Is Associated with Enhanced Responsiveness to Chemotherapy and Prolonged Overall Survival
title_fullStr High Density of CD16+ Tumor-Infiltrating Immune Cells in Recurrent Ovarian Cancer Is Associated with Enhanced Responsiveness to Chemotherapy and Prolonged Overall Survival
title_full_unstemmed High Density of CD16+ Tumor-Infiltrating Immune Cells in Recurrent Ovarian Cancer Is Associated with Enhanced Responsiveness to Chemotherapy and Prolonged Overall Survival
title_sort high density of cd16+ tumor-infiltrating immune cells in recurrent ovarian cancer is associated with enhanced responsiveness to chemotherapy and prolonged overall survival
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/8c772b4699c84f8d9b365a85477f6f46
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