Evidence map›Paper›PMID 28859612›Full record

ArticleBMC cancer2017

Differential expression of estrogen receptor subtypes and variants in ovarian cancer: effects on cell invasion, proliferation and prognosis.

Karen K L Chan, Michelle K Y Siu, Yu-Xin Jiang, Jing-Jing Wang, Yan Wang, Thomas H Y Leung, Stephanie S Liu, Annie N Y Cheung, Hextan Y S Ngan

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 2 pooled it
4.8field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

49 citing papers in PubMed, 2 syntheses or guidelines pooled it, 63 citations in OpenAlex.

  1. Pooled it
  2. A Systematic Review of Atypical Endometriosis-Associated Biomarkers.International journal of molecular sciences · 2022
    Pooled it
  3. Estrogen Receptor Beta Isoforms Interplay Integrates Nuclear and Extra-Nuclear Signaling to Modulate Human Granulosa Cell Growth.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
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  18. The Role of NQO1 in Ovarian Cancer.International journal of molecular sciences · 2023
    Review
  19. Article
  20. Molecular Management of High-Grade Serous Ovarian Carcinoma.International journal of molecular sciences · 2022
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 2 countries.

Karen K L ChanDepartment of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Hong Kong, HKSAR, China. kklchan@hku.hk.
Michelle K Y SiuDepartment of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Hong Kong, HKSAR, China.
Yu-Xin JiangDepartment of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Hong Kong, HKSAR, China.
Jing-Jing WangDepartment of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Hong Kong, HKSAR, China.
Yan WangDepartment of Pathology, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China.
Thomas H Y LeungDepartment of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Hong Kong, HKSAR, China.
Stephanie S LiuDepartment of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Hong Kong, HKSAR, China.
Annie N Y CheungDepartment of Pathology, The University of Hong Kong, Queen Mary Hospital, Hong Kong, HKSAR, China.
Hextan Y S NganDepartment of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Hong Kong, HKSAR, China.
Queen Mary Hospital · CNUniversity of Hong Kong · HKUniversity of Hong Kong - Shenzhen Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDue to the presence of both classical estrogen receptor (ERα) and another ER subtype (ERβ) in ovarian cancer, hormonal treatment is an attractive option. However, response to tamoxifen in ovarian cancer is modest. The presence of ERβ variants further complicated the issue. We have recently shown that specifically targeting ER subtypes using selective ER modulators showed opposing functions of ER subtypes on cell growth. In the present study, the clinical significance of ERα and ERβ variants (β1, β2 and β5) and the functional effects of ERβ2 and ERβ5 in ovarian cancer was investigated.

methodsERα, ERβ1, ERβ2 and ERβ5 expression were evaluated by immunohistochemistry in 106 ovarian cancer tissues. The association between ERs expression and clinicopathological parameters or prognosis was analyzed. Ectopic expression of ERβ2 and ERβ5 followed by functional assays were performed in ovarian cancer cell lines in order to detect their effects on cell invasion and proliferation.

resultsWe found significantly higher nuclear (n)ERα and nERβ5 and lower cytoplasmic (c)ERα expression in advanced cancers. Significantly lower ERβ1 expression was also detected in high grade cancers. Significant loss of nERα and cERβ2 expression were observed in clear cell histological subtypes. Higher nERβ5 and lower cERβ5 expression were associated with serous/clear cell subtypes, poor disease-free and overall survival. Positive cERα and higher cERβ1 expression were significantly associated with better disease-free and overall survival. Furthermore, we found nERβ5 as an independent prognostic factor for overall survival. Functionally, overexpression of ERβ5 enhanced ovarian cancer cell migration, invasion and proliferation via FAK/c-Src activation whereas ERβ2 induced cell migration and invasion.

conclusionsSince tamoxifen binds to both ERα and ERβ1 which appear to bear opposing oncogenic roles, the histotypes-specific expression pattern of ERs indicates that personalized treatment for women based on ERs expression using selective estrogen receptor modulators may improve response rate. This study also suggests nERβ5 as a potential prognostic marker and therapeutic target in ovarian cancer.

Indexed as

Cell ProliferationGene Expression Regulation, NeoplasticAdultAgedCell Line, TumorEstrogen Receptor alphaEstrogen Receptor betaFemaleHumansImmunohistochemistryMiddle AgedNeoplasm InvasivenessOvarian NeoplasmsPrognosisProtein IsoformsESR1 protein, humanESR2 protein, humanEstrogen Receptor alphaEstrogen Receptor betaProtein IsoformsCell invasion and proliferationEstrogen receptorsOvarian cancerPrognostic marker

Identifiers

PMID28859612
PMCPMC5579953
OpenAlexW2752905556

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.