Evidence map›Paper›PMID 26711638›Full record

SynthesisWorld journal of surgery2016

Secondary Cancers After Radiation Therapy for Primary Prostate or Rectal Cancer.

Yen-Chien Lee, Chung-Cheng Hsieh, Chung-Yi Li, Jen-Pin Chuang, Jenq-Chang Lee

Abstract readMeta-AnalysisReview
PubMed Publisher
In one paragraph

Synthesis in World journal of surgery, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.0field-weighted citation impact, top 21% 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

14 citing papers in PubMed, 20 citations in OpenAlex.

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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

5 authors at 3 institutions in 2 countries.

Yen-Chien LeeInstitute of Clinical Medicine, National Cheng Kung University College of Medicine, Tainan, Taiwan, ROC. yc_lee@post.harvard.edu.
Chung-Cheng HsiehDepartment of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, US 364 Plantation Street, LRB#427, Worcester, MA, 01605, USA. chung-cheng.hsieh@umassmed.edu.
Chung-Yi LiDepartment and Graduate Institute of Public Health, College of Medicine, National Cheng Kung University, University Road, Tainan, 701, Taiwan, ROC. cyli99@mail.ncku.edu.tw.
Jen-Pin ChuangInstitute of Clinical Medicine, National Cheng Kung University College of Medicine, Tainan, Taiwan, ROC. chuangjp@gmail.com.
Jenq-Chang LeeDepartments of Surgery, National Cheng Kung University Medical Center, No. 138, Sheng Li Road, Tainan, 704, Taiwan, ROC. leejc@mail.ncku.edu.tw.
Chest Hospital, Ministry of Health and Welfare · TWNational Cheng Kung University · TWUniversity of Massachusetts Chan Medical School · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Literature about the risk of secondary cancer after radiation therapy (RT) of prostate and rectal cancer reveals contradictory results. We conducted a meta-analysis to examine whether the RT induces secondary rectal or prostate cancer in patients, respectively, with prostate or rectal cancer. All studies published in Medline or Pubmed up to March 3, 2015, containing RT of primary rectal or prostate cancer, and providing risk estimates of secondary prostate or rectal cancer were considered as eligible. Relative risk (RR) and standardized incidence ratios (SIR) were calculated using the random-effects model. Twenty studies met the inclusion criteria. 12 of them were from the Surveillance, Epidemiology, and End Results (SEER) database. For prostate cancer patients, pooled adjusted RRs or SIRs did not show an effect on the risk of secondary rectal cancer. However, notwithstanding the limitations of SEER-based studies, the subgroup of prostate cancer patients receiving external beam radiation therapy (EBRT) showed an increased risk of rectal cancer. For rectal cancer patients, pooled adjusted RR of prostate cancer was 1.12 (95 % CI, 0.44-2.8) and SIR was 0.40 (95 % CI, 0.29-0.55). All studies included in the SIR analysis of rectal cancer were derived from the SEER data source. Based on current evidence, RT for prostate cancer patients had no effect on rectal cancer incidence, except for patients who received EBRT therapy. However, compared with the general population, RT for rectal cancer is associated with a decreased prostate cancer risk as found in SEER-based studies.

Indexed as

BrachytherapyHumansIncidenceMaleNeoplasms, Second PrimaryProportional Hazards ModelsProstatic NeoplasmsRadiotherapyRectal NeoplasmsRisk Factors

Identifiers

PMID26711638
OpenAlexW2205715950

What OpenQuestion holds

Textmetadata
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.