Evidence map›Paper›PMID 31636395›Full record

ArticleGenetics in medicine : official journal of the American College of Medical Genetics2020

Functional characterization of 84 PALB2 variants of uncertain significance.

Timothy Wiltshire, Mandy Ducy, Tzeh Keong Foo, Chunling Hu, Kun Y Lee, Anil Belur Nagaraj, Amélie Rodrigue, Thiago T Gomes, Jacques Simard, Alvaro N A Monteiro and 4 more

Open access · hybridAbstract read
In one paragraph

Article in Genetics in medicine : official journal of the American College of Medical Genetics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
3.0field-weighted citation impact, top 8% 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

31 citing papers in PubMed, 52 citations in OpenAlex.

  1. Review
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  5. Proline variants in the BRCA1 coiled-coil domain disrupt folding and binding to PALB2.Protein science : a publication of the Protein Society · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

14 authors at 6 institutions in 3 countries.

Timothy WiltshireDepartment of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA.
Mandy DucyCHU de Québec-Université Laval, Oncology Division, Québec City, QC, Canada.
Tzeh Keong FooDepartment of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA.
Chunling HuDepartment of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA.
Kun Y LeeDepartment of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA.
Anil Belur NagarajDepartment of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA.
Amélie RodrigueCHU de Québec-Université Laval, Oncology Division, Québec City, QC, Canada.
Thiago T GomesInstituto Federal do Rio de Janeiro (IFRJ), Rio de Janeiro, RJ, Brazil.
Jacques SimardCHU de Québec-Université Laval, Endocrinology and Nephrology Division, Québec City, QC, Canada.
Alvaro N A MonteiroDepartment of Cancer Epidemiology, H. Lee Moffitt Cancer Center, Tampa, FL, USA.
Bing XiaDepartment of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA.
Marcelo A CarvalhoInstituto Federal do Rio de Janeiro (IFRJ), Rio de Janeiro, RJ, Brazil.
Jean-Yves MassonCHU de Québec-Université Laval, Oncology Division, Québec City, QC, Canada.
Fergus J CouchDepartment of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA. couch.fergus@mayo.edu.ORCID http://orcid.org/0000-0001-9417-9985
Mayo Clinic in Arizona · USUniversité Laval · CAInstituto Federal do Rio de Janeiro · BRRutgers, The State University of New Jersey · USMayo Clinic · USMoffitt Cancer Center · US

Funding

The Role of CHFR in Tumorigenesis and Paclitaxel-Sensitivity in Breast CancerP50CA116201 · NCI · MAYO CLINIC ROCHESTER · PI Fergus Joseph Couch · 2005 to 2026
$49.9M
Role of PALB2 in the DNA Damage Response and Cancer SuppressionR01CA138804 · NCI · UNIV OF MED/DENT NJ-R W JOHNSON MED SCH · PI XIA, BING · 2009 to 2024
$5.5M
BRCA2 missense mutations and breast cancerR01CA116167 · NCI · MAYO CLINIC ROCHESTER · PI COUCH, FERGUS JOSEPH · 2007 to 2011
$3.0M
BRCA1 and BRCA2 missense mutations and breast cancer riskU01CA116167 · NCI · MAYO CLINIC ROCHESTER · PI COUCH, FERGUS JOSEPH · 2013 to 2017
$2.7M
CIHRNCI NIH HHS P50 CA116201NCI NIH HHS R01 CA116167NCI NIH HHS R01 CA138804NCI NIH HHS U01 CA116167
6 · The paper itself

Abstract

purposeInherited pathogenic variants in PALB2 are associated with increased risk of breast and pancreatic cancer. However, the functional and clinical relevance of many missense variants of uncertain significance (VUS) identified through clinical genetic testing is unclear. The ability of patient-derived germline missense VUS to disrupt PALB2 function was assessed to identify variants with potential clinical relevance.

methodsThe influence of 84 VUS on PALB2 function was evaluated using a cellular homology directed DNA repair (HDR) assay and VUS impacting activity were further characterized using secondary functional assays.

resultsFour (~5%) variants (p.L24S,c.71T>C; p.L35P,c.104T>C; pI944N,c.2831T>A; and p.L1070P,c.3209T>C) disrupted PALB2-mediated HDR activity. These variants conferred sensitivity to cisplatin and a poly(ADP-ribose) polymerase (PARP) inhibitor and reduced RAD51 foci formation in response to DNA damage. The p.L24S and p.L35P variants disrupted BRCA1-PALB2 protein complexes, p.I944N was associated with protein instability, and both p.I944N and p.L1070P mislocalized PALB2 to the cytoplasm.

conclusionThese findings show that the HDR assay is an effective method for screening the influence of inherited variants on PALB2 function, that four missense variants impact PALB2 function and may influence cancer risk and response to therapy, and suggest that few inherited PALB2 missense variants disrupt PALB2 function in DNA repair.

Indexed as

BRCA1 ProteinBreast NeoplasmsCell Line, TumorDNA DamageDNA RepairFanconi Anemia Complementation Group N ProteinFemaleGATA3 Transcription FactorGenetic Predisposition to DiseaseHumansMutation, MissensePoly(ADP-ribose) Polymerase InhibitorsRad51 RecombinaseRecombinational DNA RepairBRCA1 ProteinBRCA1 protein, humanFanconi Anemia Complementation Group N ProteinGATA3 protein, humanGATA3 Transcription FactorPALB2 protein, humanPoly(ADP-ribose) Polymerase InhibitorsRad51 Recombinasebreast cancerhomologous recombination repairPALB2PARP inhibitorvariant of uncertain significance (VUS)

Identifiers

PMID31636395
PMCPMC7056643
OpenAlexW2981196143

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.