Evidence map›Paper›PMID 35302596›Full record

ArticleClinical cancer research : an official journal of the American Association for Cancer Research2022

Molecular Characterization of KRAS Wild-type Tumors in Patients with Pancreatic Adenocarcinoma.

Philip A Philip, Ibrahim Azar, Joanne Xiu, Michael J Hall, Andrew Eugene Hendifar, Emil Lou, Jimmy J Hwang, Jun Gong, Rebecca Feldman, Michelle Ellis and 10 more

Abstract read
In one paragraph

Article in Clinical cancer research : an official journal of the American Association for Cancer Research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 116 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
116citing 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

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

  1. Pooled it
  2. Efficacy of Zenocutuzumab inThe New England journal of medicine · 2025
    Trial
  3. Trial
  4. Article
  5. Review
  6. Review
  7. Research progress in diagnosis and treatment of pancreatic cancer with mismatch repair and microsatellite instability.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026
    Review
  8. Article
  9. Review
  10. Review
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. KRAS Inhibition in Pancreatic Ductal Adenocarcinoma.Journal of clinical medicine · 2026
    Review
  19. Review
  20. Review

56 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

20 authors.

Philip A PhilipWayne State University, School of Medicine, Karmanos Cancer Center, Detroit, Michigan.ORCID 0000-0002-6513-3491
Ibrahim AzarWayne State University, School of Medicine, Karmanos Cancer Center, Detroit, Michigan.ORCID 0000-0002-1008-1807
Joanne XiuCaris Life Sciences, Phoenix, Arizona.
Michael J HallFox Chase Cancer Center, Philadelphia, Pennsylvania.
Andrew Eugene HendifarSamuel Oschin Cancer Center, Cedars-Sinai Medical Center, Los Angeles, California.
Emil LouMasonic Cancer Center, University of Minnesota, Minneapolis, Minnesota.ORCID 0000-0002-1607-1386
Jimmy J HwangLevine Cancer Institute, Charlotte, North Carolina.
Jun GongSamuel Oschin Cancer Center, Cedars-Sinai Medical Center, Los Angeles, California.
Rebecca FeldmanCaris Life Sciences, Phoenix, Arizona.ORCID 0000-0003-4502-1473
Michelle EllisCaris Life Sciences, Phoenix, Arizona.ORCID 0000-0002-6517-9932
Phil StaffordCaris Life Sciences, Phoenix, Arizona.
David SpetzlerCaris Life Sciences, Phoenix, Arizona.
Moh'd M KhushmanMedical Oncology, The University of South Alabama, Mitchell Cancer Institute, Mobile, Alabama.
Davendra SohalUniversity of Cincinnati, Cincinnati, Ohio.
A Craig LockhartMedical University of South Carolina, Charleston, South Carolina.
Benjamin A WeinbergGeorgetown University, Washington, District of Columbia.ORCID 0000-0002-0408-4817
Wafik S El-DeiryCancer Center at Brown University, The Warren Alpert Medical School, Brown University, Providence, Rhode Island.
John MarshallGeorgetown University, Washington, District of Columbia.ORCID 0000-0002-3449-2344
Anthony F ShieldsWayne State University, School of Medicine, Karmanos Cancer Center, Detroit, Michigan.ORCID 0000-0002-9122-1014
W Michael KornCaris Life Sciences, Phoenix, Arizona.ORCID 0000-0002-0124-6841

Funding

Tumor Biology and Microenvironment (Program 1)P30CA022453 · NCI · WAYNE STATE UNIVERSITY · PI Julie Lynn Boerner · 1985 to 2026
$68.4M
NCI NIH HHS P30 CA022453
6 · The paper itself

Abstract

purposeKRAS mutation (MT) is a major oncogenic driver in pancreatic ductal adenocarcinoma (PDAC). A small subset of PDACs harbor KRAS wild-type (WT). We aim to characterize the molecular profiles of KRAS WT PDAC to uncover new pathogenic drivers and offer targeted treatments. EXPERIMENTAL

designTumor tissue obtained from surgical or biopsy material was subjected to next-generation DNA/RNA sequencing, microsatellite instability (MSI) and mismatch repair status determination.

resultsOf the 2,483 patients (male 53.7%, median age 66 years) studied, 266 tumors (10.7%) were KRAS WT. The most frequently mutated gene in KRAS WT PDAC was TP53 (44.5%), followed by BRAF (13.0%). Multiple mutations within the DNA-damage repair (BRCA2, ATM, BAP1, RAD50, FANCE, PALB2), chromatin remodeling (ARID1A, PBRM1, ARID2, KMT2D, KMT2C, SMARCA4, SETD2), and cell-cycle control pathways (CDKN2A, CCND1, CCNE1) were detected frequently. There was no statistically significant difference in PD-L1 expression between KRAS WT (15.8%) and MT (17%) tumors. However, KRAS WT PDAC were more likely to be MSI-high (4.7% vs. 0.7%; P < 0.05), tumor mutational burden-high (4.5% vs. 1%; P < 0.05), and exhibit increased infiltration of CD8+ T cells, natural killer cells, and myeloid dendritic cells. KRAS WT PDACs exhibited gene fusions of BRAF (6.6%), FGFR2 (5.2%), ALK (2.6%), RET (1.3%), and NRG1 (1.3%), as well as amplification of FGF3 (3%), ERBB2 (2.2%), FGFR3 (1.8%), NTRK (1.8%), and MET (1.3%). Real-world evidence reveals a survival advantage of KRAS WT patients in overall cohorts as well as in patients treated with gemcitabine/nab-paclitaxel or 5-FU/oxaliplatin.

conclusionsKRAS WT PDAC represents 10.7% of PDAC and is enriched with targetable alterations, including immuno-oncologic markers. Identification of KRAS WT patients in clinical practice may expand therapeutic options in a clinically meaningful manner.

Indexed as

AdenocarcinomaCarcinoma, Pancreatic DuctalPancreatic NeoplasmsAgedDNA HelicasesFemaleHumansMaleMicrosatellite InstabilityMutationNuclear ProteinsProto-Oncogene Proteins B-rafProto-Oncogene Proteins p21(ras)Transcription FactorsDNA HelicasesKRAS protein, humanNuclear ProteinsProto-Oncogene Proteins B-rafProto-Oncogene Proteins p21(ras)SMARCA4 protein, humanTranscription Factors

Identifiers

PMID35302596
PMCPMC9541577

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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.