Evidence map›Paper›PMID 22970155›Full record

ArticlePloS one2012

Identification of BRCA1/2 founder mutations in Southern Chinese breast cancer patients using gene sequencing and high resolution DNA melting analysis.

Ava Kwong, Enders Kai On Ng, Chris Lei Po Wong, Fian Bic Fai Law, Tommy Au, Hong Nei Wong, Allison W Kurian, Dee W West, James M Ford, Edmond Siu Kwan Ma

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed, 3 pooled it
4.5field-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

63 citing papers in PubMed, 3 syntheses or guidelines pooled it, 105 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. The Journal of international medical research · 2022
    Pooled it
  4. Article
  5. Genomic Characterization of Preclinical Prostate Cancer Cell Line Models.International journal of molecular sciences · 2024
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  11. A global perspective on the ethnic-specificJournal of the National Cancer Center · 2023
    Review
  12. Germline Mutations Landscape in a Cohort of the State of Minas Gerais, Brazil, in Patients Who Underwent Genetic Counseling for Gynecological and Breast Cancer.Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia · 2023
    Article
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  20. The Features ofInternational journal of general medicine · 2022
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3 more citing papers are in PubMed but not listed here.

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

10 authors at 3 institutions in 3 countries.

Ava KwongDepartment of Surgery, The University of Hong Kong, Hong Kong SAR. akwong@asiabreastregistry.com
Enders Kai On Ng
Chris Lei Po Wong
Fian Bic Fai Law
Tommy Au
Hong Nei Wong
Allison W Kurian
Dee W West
James M Ford
Edmond Siu Kwan Ma
Hong Kong Sanatorium and Hospital · HKStanford University · USUniversity of Hong Kong · HK

Funding

Study of Genetic Mutation Carriage in Chinese Populations with Breast CancerR03CA130065 · NCI · CANCER PREVENTION INSTIT OF CALIFORNIA · PI WEST, DEE WAYNE · 2007 to 2008
$126k
NCI NIH HHS 1R03CA130065NCI NIH HHS R03 CA130065
6 · The paper itself

Abstract

backgroundEthnic variations in breast cancer epidemiology and genetics have necessitated investigation of the spectra of BRCA1 and BRCA2 mutations in different populations. Knowledge of BRCA mutations in Chinese populations is still largely unknown. We conducted a multi-center study to characterize the spectra of BRCA mutations in Chinese breast and ovarian cancer patients from Southern China. METHODOLOGY/PRINCIPAL

findingsA total of 651 clinically high-risk breast and/or ovarian cancer patients were recruited from the Hong Kong Hereditary Breast Cancer Family Registry from 2007 to 2011. Comprehensive BRCA1 and BRCA2 mutation screening was performed using bi-directional sequencing of all coding exons of BRCA1 and BRCA2. Sequencing results were confirmed by in-house developed full high resolution DNA melting (HRM) analysis. Among the 451 probands analyzed, 69 (15.3%) deleterious BRCA mutations were identified, comprising 29 in BRCA1 and 40 in BRCA2. The four recurrent BRCA1 mutations (c.470_471delCT, c.3342_3345delAGAA, c.5406+1_5406+3delGTA and c.981_982delAT) accounted for 34.5% (10/29) of all BRCA1 mutations in this cohort. The four recurrent BRCA2 mutations (c.2808_2811delACAA, c.3109C>T, c.7436_7805del370 and c.9097_9098insA) accounted for 40% (16/40) of all BRCA2 mutations. Haplotype analysis was performed to confirm 1 BRCA1 and 3 BRCA2 mutations are putative founder mutations. Rapid HRM mutation screening for a panel of the founder mutations were developed and validated.

conclusionIn this study, our findings suggest that BRCA mutations account for a substantial proportion of hereditary breast/ovarian cancer in Southern Chinese population. Knowing the spectrum and frequency of the founder mutations in this population will assist in the development of a cost-effective rapid screening assay, which in turn facilitates genetic counseling and testing for the purpose of cancer risk assessment.

Indexed as

Founder EffectAdolescentAdultAgedAged, 80 and overAsian PeopleBRCA1 ProteinBRCA2 ProteinBreast NeoplasmsCase-Control StudiesChinaDNA Mutational AnalysisFemaleGenetic Predisposition to DiseaseHaplotypesHumansBRCA1 ProteinBRCA2 Protein

Identifiers

PMID22970155
PMCPMC3436879
OpenAlexW1986441411

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.