Evidence map›Paper›PMID 21645396›Full record

ArticleBreast cancer research : BCR2011

Telomerase expression and telomere length in breast cancer and their associations with adjuvant treatment and disease outcome.

Lingeng Lu, Chong Zhang, Gongjian Zhu, Melinda Irwin, Harvey Risch, Guido Menato, Marco Mitidieri, Dionyssios Katsaros, Herbert Yu

Open access · goldAbstract read
In one paragraph

Article in Breast cancer research : BCR, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 3 pooled it
2.8field-weighted citation impact, top 10% 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

46 citing papers in PubMed, 3 syntheses or guidelines pooled it, 78 citations in OpenAlex.

  1. Pooled it
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  4. Potential of hTERT mRNA for the management of advanced head and neck squamous cell carcinoma.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2026
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  18. Social Relationships and Salivary Telomere Length Among Middle-Aged and Older African American and White Adults.The journals of gerontology. Series B, Psychological sciences and social sciences · 2019
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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 4 institutions in 3 countries.

Lingeng LuDepartment of Epidemiology and Public Health, Yale Cancer Center, Yale University School of Medicine, New Haven, CT 06520-8034, USA.
Chong Zhang
Gongjian Zhu
Melinda Irwin
Harvey Risch
Guido Menato
Marco Mitidieri
Dionyssios Katsaros
Herbert Yu
University of Turin · ITYale University · USYale Cancer Center · USGansu Provincial Cancer Hospital Gansu Provincial Academic Instiute for Medical Research · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionTelomere length plays important roles in maintaining genome stability and regulating cell replication and death. Telomerase has functions not only to extend telomere length but also to repair DNA damage. Studies have shown that telomerase may increase cancer cell resistance to DNA-damaging anticancer agents; tamoxifen may suppress telomerase expression in breast cancer cells. This study aimed to investigate the role of telomere length and telomerase activity in breast cancer prognosis.

methodsqPCR and qRT-PCR were used to analyze telomere length and telomerase expression, respectively, in tumor samples of 348 breast cancer patients. Cox regression analysis was performed to examine telomere length and telomerase expression in association with disease-free survival and cause-specific mortality.

resultsTelomere length had no relation to tumor features or disease outcomes. Telomerase expression was detected in 53% of tumors. Larger tumors or aggressive disease were more likely to have telomerase expression. Among patients treated with chemotherapy, high telomerase was found to be associated with increased risk of death (hazard ratio (HR) = 3.15; 95% CI: 1.34 to 7.40) and disease recurrence (HR = 2.04; 95% CI: 0.96 to 4.30) regardless of patient age, disease stage, tumor grade, histological type or hormone receptor status. Patients treated with endocrine therapy had different results regarding telomerase: high telomerase appeared to be associated with better survival outcomes. Telomerase expression made no survival difference in patients who received both chemotherapy and endocrine therapy.

conclusionsOverall, telomerase expression was not associated with disease outcome, but this finding may be masked by adjuvant treatment. Patients with high telomerase expression responded poorly to chemotherapy in terms of disease-free and overall survival, but fared better if treated with endocrine therapy.

Indexed as

Telomere HomeostasisAdultAgedAged, 80 and overAntineoplastic AgentsApoptosisBreast NeoplasmsCell DivisionChemotherapy, AdjuvantFemaleHumansMiddle AgedTamoxifenTelomeraseTelomereTreatment OutcomeAntineoplastic AgentsTamoxifenTelomerase

Identifiers

PMID21645396
PMCPMC3218945
OpenAlexW2111720984

What OpenQuestion holds

Textmetadata
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.