Evidence map›Paper›PMID 32933947›Full record

ArticleGut2021

Clinical and genomic characterisation of mismatch repair deficient pancreatic adenocarcinoma.

Robert C Grant, Robert Denroche, Gun Ho Jang, Klaudia M Nowak, Amy Zhang, Ayelet Borgida, Spring Holter, James T Topham, Julie Wilson, Anna Dodd and 14 more

Abstract read
PubMed Publisher
In one paragraph

Article in Gut, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
7.8field-weighted citation impact, top 2% 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

47 citing papers in PubMed, 69 citations in OpenAlex.

  1. Trial
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  7. Article
  8. Improving outcomes of patients with pancreatic cancer.Nature reviews. Clinical oncology · 2025
    Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Research Advances in the Role of the Tropomyosin Family in Cancer.International journal of molecular sciences · 2023
    Review
  15. Review
  16. Review
  17. The role of molecular testing in pancreatic cancer.Therapeutic advances in gastroenterology · 2023
    Review
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

24 authors at 8 institutions in 1 country.

Robert C GrantOntario Institute for Cancer Research, Toronto, Ontario, Canada.ORCID 0000-0002-9821-0377
Robert DenrocheOntario Institute for Cancer Research, Toronto, Ontario, Canada.
Gun Ho JangOntario Institute for Cancer Research, Toronto, Ontario, Canada.
Klaudia M NowakDepartment of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.
Amy ZhangOntario Institute for Cancer Research, Toronto, Ontario, Canada.
Ayelet BorgidaOntario Pancreas Cancer Study, Mount Sinai Hospital, Toronto, Ontario, Canada.
Spring HolterOntario Pancreas Cancer Study, Mount Sinai Hospital, Toronto, Ontario, Canada.
James T TophamPancreas Centre BC, Vancouver, Ontario, Canada.
Julie WilsonOntario Institute for Cancer Research, Toronto, Ontario, Canada.
Anna DoddWallace McCain Centre for Pancreatic Cancer, Princess Margaret Hospital Cancer Centre, Toronto, Ontario, Canada.
Raymond JangWallace McCain Centre for Pancreatic Cancer, Princess Margaret Hospital Cancer Centre, Toronto, Ontario, Canada.
Rebecca PrinceWallace McCain Centre for Pancreatic Cancer, Princess Margaret Hospital Cancer Centre, Toronto, Ontario, Canada.
Joanna M KarasinskaPancreas Centre BC, Vancouver, Ontario, Canada.
David F SchaefferPancreas Centre BC, Vancouver, Ontario, Canada.
Yifan WangGoodman Cancer Research Centre, Montreal, Quebec, Canada.
George ZogopoulosGoodman Cancer Research Centre, Montreal, Quebec, Canada.
Scott BerryDepartment of Oncology, Queen's University, Kingston, Ontario, Canada.
Diane SimeoneNYU Langone Health, New York City, New York, USA.
Daniel J RenoufPancreas Centre BC, Vancouver, Ontario, Canada.
Faiyaz NottaOntario Institute for Cancer Research, Toronto, Ontario, Canada.
Grainne O'KaneWallace McCain Centre for Pancreatic Cancer, Princess Margaret Hospital Cancer Centre, Toronto, Ontario, Canada.
Jennifer KnoxWallace McCain Centre for Pancreatic Cancer, Princess Margaret Hospital Cancer Centre, Toronto, Ontario, Canada.
Sandra FischerDepartment of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.
Steven GallingerOntario Institute for Cancer Research, Toronto, Ontario, Canada Steven.Gallinger@uhn.ca.
Ontario Institute for Cancer Research · CAPrincess Margaret Cancer Centre · CAPancreas Centre (Canada) · CAMount Sinai Hospital · CAOccupational Cancer Research Centre · CAUniversity of Toronto · CABC Cancer Agency · CAQueen's University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo describe the clinical, pathological and genomic characteristics of pancreatic cancer with DNA mismatch repair deficiency (MMRD) and proficiency (MMRP).

designWe identified patients with MMRD and MMRP pancreatic cancer in a clinical cohort (N=1213, 519 with genetic testing, 53 with immunohistochemistry (IHC)) and a genomic cohort (N=288 with whole-genome sequencing (WGS)).

results12 out of 1213 (1.0%) in the clinical cohort were MMRD by IHC or WGS. Of the 14 patients with Lynch syndrome, 3 (21.4%) had an MMRP pancreatic cancer by IHC, and 4 (28.6%) were excluded because tissue was unavailable for testing. MMRD cancers had longer overall survival after surgery (weighted HR after coarsened exact matching 0.11, 95% CI 0.02 to 0.78, p=0.001). One patient with an unresectable MMRD cancer has an ongoing partial response 3 years after starting treatment with PD-L1/CTLA-4 inhibition. This tumour showed none of the classical histopathological features of MMRD. 9 out of 288 (3.1%) tumours with WGS were MMRD. Despite markedly higher tumour mutational burden and neoantigen loads, MMRD cancers were significantly less likely to have mutations in usual pancreatic cancer driver genes like

conclusionsMMRD pancreatic cancers have distinct clinical, pathological and genomic profiles. Patients with MMRD pancreatic cancer should be considered for basket trials targeting enhanced immunogenicity or the unique genomic drivers in these malignancies.

Indexed as

AdenocarcinomaColorectal Neoplasms, Hereditary NonpolyposisDNA Repair-Deficiency DisordersFemaleGenetic TestingGenomicsHumansMaleMicrosatellite InstabilityMutationOntarioPancreatic NeoplasmsRetrospective StudiesWhole Genome Sequencingcancer geneticscancer immunobiologycancer syndromesmolecular geneticspancreatic cancer

Identifiers

PMID32933947
OpenAlexW3084492591

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.