Better or worse? The prognostic role of the mesenchymal subtype in patients with high‐grade serous ovarian carcinoma: A systematic review and meta‐analysis

Abstract Background Tumor characteristics can be prognostically relevant in patients with high‐grade serous ovarian carcinoma (HGSOC). This study aimed to determine whether different subtypes of HGSOC, especially the mesenchymal subtype, are associated with overall survival (OS) or progression‐free...

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Main Authors: Juan Chen, Xiaoyan Shi, Lan Xiao, Zelian Li, Zhimin Li, Lei Sun
Format: Article
Language:English
Published: Wiley 2022-10-01
Series:Cancer Medicine
Subjects:
Online Access:https://doi.org/10.1002/cam4.4752
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author Juan Chen
Xiaoyan Shi
Lan Xiao
Zelian Li
Zhimin Li
Lei Sun
author_facet Juan Chen
Xiaoyan Shi
Lan Xiao
Zelian Li
Zhimin Li
Lei Sun
author_sort Juan Chen
collection DOAJ
description Abstract Background Tumor characteristics can be prognostically relevant in patients with high‐grade serous ovarian carcinoma (HGSOC). This study aimed to determine whether different subtypes of HGSOC, especially the mesenchymal subtype, are associated with overall survival (OS) or progression‐free survival (PFS) in patients with HGSOC. Methods PubMed, Embase, and the Cochrane Library were searched for studies published up to September 2020. The eligibility criteria were (1) population: patients with HGSOG with molecular subtyping of their tumor, (2) exposure: mesenchymal subtype, (3) non‐exposure: differentiated, immunoreactive, proliferative, and other non‐mesenchymal subtypes, (4) outcome: survival, with hazard ratios (HRs), and (5) English language. Results The mesenchymal subtype showed no statistically significant difference in OS compared with the immunoreactive subtype (HR = 1.47, 95% CI: 0.78–2.78, p = 0.238; I2 = 81.2%, pheterogeneity = 0.005) or all non‐mesenchymal subtypes (HR = 1.65, 95% CI: 0.97–2.80, p = 0.063; I2 = 79.4%, pheterogeneity = 0.008). The mesenchymal subtype showed no statistically significant difference in PFS compared with the immunoreactive subtype (HR = 1.19, 95% CI: 0.71–2.00, p = 0.514; I2 = 71.6%, pheterogeneity = 0.030) but a significant differences was observed when using all non‐mesenchymal subtypes as reference (HR = 1.51, 95% CI: 1.00–2.28, p = 0.049). The results were robust according to the sensitivity analyses. Conclusions There are no statistically significant differences in OS between the mesenchymal subtype of HGSOC and other subtypes of HGSOC. Because of statistical power, this meta‐analysis cannot conclude about non‐inferiority, and the relationship between the molecular subtypes and HGSOC prognosis remains controversial. Based on one study, the mesenchymal subtype could have a poorer PFS than the non‐mesenchymal subtypes of HGSOC, but this conclusion requires further evidence.
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spelling doaj.art-24d0d2ea0e9d4bcfb4e0599cb9985ea92022-12-22T02:34:50ZengWileyCancer Medicine2045-76342022-10-0111203761377010.1002/cam4.4752Better or worse? The prognostic role of the mesenchymal subtype in patients with high‐grade serous ovarian carcinoma: A systematic review and meta‐analysisJuan Chen0Xiaoyan Shi1Lan Xiao2Zelian Li3Zhimin Li4Lei Sun5Department of Obstetrics & Gynecology First Affiliated Hospital of Anhui Medical University Hefei ChinaCentral Laboratory, The Central Hospital of Wuhan, Tongji Medical College Huazhong University of Science and Technology Wuhan ChinaDepartment of Obstetrics & Gynecology First Affiliated Hospital of Anhui Medical University Hefei ChinaDepartment of Obstetrics & Gynecology First Affiliated Hospital of Anhui Medical University Hefei ChinaDepartment of Gynecology Guangdong Women and Children Hospital Guangzhou ChinaDepartment of Obstetrics & Gynecology First Affiliated Hospital of Anhui Medical University Hefei ChinaAbstract Background Tumor characteristics can be prognostically relevant in patients with high‐grade serous ovarian carcinoma (HGSOC). This study aimed to determine whether different subtypes of HGSOC, especially the mesenchymal subtype, are associated with overall survival (OS) or progression‐free survival (PFS) in patients with HGSOC. Methods PubMed, Embase, and the Cochrane Library were searched for studies published up to September 2020. The eligibility criteria were (1) population: patients with HGSOG with molecular subtyping of their tumor, (2) exposure: mesenchymal subtype, (3) non‐exposure: differentiated, immunoreactive, proliferative, and other non‐mesenchymal subtypes, (4) outcome: survival, with hazard ratios (HRs), and (5) English language. Results The mesenchymal subtype showed no statistically significant difference in OS compared with the immunoreactive subtype (HR = 1.47, 95% CI: 0.78–2.78, p = 0.238; I2 = 81.2%, pheterogeneity = 0.005) or all non‐mesenchymal subtypes (HR = 1.65, 95% CI: 0.97–2.80, p = 0.063; I2 = 79.4%, pheterogeneity = 0.008). The mesenchymal subtype showed no statistically significant difference in PFS compared with the immunoreactive subtype (HR = 1.19, 95% CI: 0.71–2.00, p = 0.514; I2 = 71.6%, pheterogeneity = 0.030) but a significant differences was observed when using all non‐mesenchymal subtypes as reference (HR = 1.51, 95% CI: 1.00–2.28, p = 0.049). The results were robust according to the sensitivity analyses. Conclusions There are no statistically significant differences in OS between the mesenchymal subtype of HGSOC and other subtypes of HGSOC. Because of statistical power, this meta‐analysis cannot conclude about non‐inferiority, and the relationship between the molecular subtypes and HGSOC prognosis remains controversial. Based on one study, the mesenchymal subtype could have a poorer PFS than the non‐mesenchymal subtypes of HGSOC, but this conclusion requires further evidence.https://doi.org/10.1002/cam4.4752gene signaturemesenchymal subtypemeta‐analysisovarian cancerprognosissurvival
spellingShingle Juan Chen
Xiaoyan Shi
Lan Xiao
Zelian Li
Zhimin Li
Lei Sun
Better or worse? The prognostic role of the mesenchymal subtype in patients with high‐grade serous ovarian carcinoma: A systematic review and meta‐analysis
Cancer Medicine
gene signature
mesenchymal subtype
meta‐analysis
ovarian cancer
prognosis
survival
title Better or worse? The prognostic role of the mesenchymal subtype in patients with high‐grade serous ovarian carcinoma: A systematic review and meta‐analysis
title_full Better or worse? The prognostic role of the mesenchymal subtype in patients with high‐grade serous ovarian carcinoma: A systematic review and meta‐analysis
title_fullStr Better or worse? The prognostic role of the mesenchymal subtype in patients with high‐grade serous ovarian carcinoma: A systematic review and meta‐analysis
title_full_unstemmed Better or worse? The prognostic role of the mesenchymal subtype in patients with high‐grade serous ovarian carcinoma: A systematic review and meta‐analysis
title_short Better or worse? The prognostic role of the mesenchymal subtype in patients with high‐grade serous ovarian carcinoma: A systematic review and meta‐analysis
title_sort better or worse the prognostic role of the mesenchymal subtype in patients with high grade serous ovarian carcinoma a systematic review and meta analysis
topic gene signature
mesenchymal subtype
meta‐analysis
ovarian cancer
prognosis
survival
url https://doi.org/10.1002/cam4.4752
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