Evidence map›Paper›PMID 30898109›Full record

SynthesisBMC cancer2019

Prevalence of BRCA mutations among hereditary breast and/or ovarian cancer patients in Arab countries: systematic review and meta-analysis.

Khadiga Abdulrashid, Nour AlHussaini, Wifag Ahmed, Lukman Thalib

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in BMC cancer, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

28 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  12. Cancer Incidence and Mortality Estimates in Arab Countries in 2018: A GLOBOCAN Data Analysis.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2023
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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

4 authors.

Khadiga AbdulrashidDepartment of Public Health, College of Health Sciences, Qatar University, PO Box 2713, Doha, Qatar.
Nour AlHussainiDepartment of Public Health, College of Health Sciences, Qatar University, PO Box 2713, Doha, Qatar.
Wifag AhmedDepartment of Public Health, College of Health Sciences, Qatar University, PO Box 2713, Doha, Qatar.
Lukman ThalibDepartment of Public Health, College of Health Sciences, Qatar University, PO Box 2713, Doha, Qatar. Lthalib@qu.edu.qa.ORCID http://orcid.org/0000-0002-1211-6495

Funding

Qatar National Library Article Processing Charge
6 · The paper itself

Abstract

backgroundTo systematically assess the prevalence of BRCA1 and BRCA2 gene mutations in women with Hereditary Breast and/or Ovarian Cancer (HBOC) in Arab countries and to describe the variability in the BRCA gene mutations in different regions of the Arab world.

methodsObservational studies reporting prevalence of BRCA mutations from 22 Arab countries were systematically searched in databases including PUBMED, EMBASE, Web of Science, and Google Scholar. Two reviewers independently screened the studies and extracted data and assessed the risk of bias. Hoy's risk of Bias tool was used to assess the biases in individual studies. Due to substantial heterogeneity, pooled weighted estimates were calculated using Quality Effect Models (QEM) that adjust for bias, while the Random Effect Models (REM) estimates served as the sensitivity estimates.

resultsFourteen studies reporting prevalence of BRCA were included. The pooled estimate of BRCA among HBOC was 20% (95% CI: 7-36%). Subgroup analysis including only those with low risk of bias provided an estimate of 11% (95% CI: 1-27%). Levant region had higher prevalence 28% (95% CI: 11-49%) compared to Arabian Gulf region and North Africa but differences are not statistically significant, when tested using Z-test for proportions.

conclusionGiven the pooled estimates vary widely with substantial heterogeneity, larger, well-designed studies are warranted to better understand the frequency and the impact of BRCA gene mutations among Arab women.

trial registrationInternational Prospective Register of Systematic Reviews (PROSPERO) registration number: CRD42018095905 .

Indexed as

ArabsBRCA1 ProteinBRCA2 ProteinFemaleHereditary Breast and Ovarian Cancer SyndromeHumansBRCA1 ProteinBRCA1 protein, humanBRCA2 ProteinBRCA2 protein, humanArab countriesBRCA mutationsFamilial breast cancerFamilial ovarian cancerSystematic review, meta-analysis

Identifiers

PMID30898109
PMCPMC6429759

What OpenQuestion holds

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Registered trials

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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.