Cited by 211Cancer Immunotherapy and BiomarkersGenetic factors in colorectal cancerColorectal Cancer Treatments and Studies

Response to PD-1 Blockade in Microsatellite Stable Metastatic Colorectal Cancer Harboring a POLE Mutation

Open access
Gong, Jun, Wang, Chongkai, Lee, Peter P., Chu, Peiguo, Fakih, Marwan·2017·Journal of the National Comprehensive Cancer Network

Abstract

Recent clinical evidence has demonstrated that microsatellite instability (MSI) or defective mismatch repair (MMR) and high tumor mutational load can predict response to the programmed cell death 1 (PD-1) receptor inhibitor pembrolizumab in metastatic colorectal cancer (mCRC). Mutations in polymerase ε (POLE), a DNA polymerase involved in DNA replication and repair, contribute to an ultramutated but microsatellite stable (MSS) phenotype in colorectal tumors that is uniquely distinct from MSI tumors. This report presents the first case in the literature describing a clinical response to pembrolizumab in an 81-year-old man with treatment-refractory mCRC characterized by an MSS phenotype and POLE mutation identified on genomic profiling by next-generation sequencing. On tumor immunostaining, a large amount of CD8-positive tumor infiltrating lymphocytes (TILs) were present, with >90% of these expressing PD-1. More than 99% of PD-L1 expression was identified on nontumor cells in the tumor microenvironment that were close to the PD-1–positive CD8 TILs. mCRC tumors harboring POLE mutations represent a hypermutated phenotype that may predict response to anti–PD-1 therapy.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.6004/jnccn.2017.0016

Cites

14 of 14 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • mCRC that originates via Pol epsilon mutations displays relatively higher tumor mutational burden, and these patients show increased response to ICB therapy.

    “mCRC that originates via Pol epsilon mutations displays relatively higher TMB, and these patients show increased response to ICB therapy [146].”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

1 of the 15 references couldn’t be matched to a known paper.

Research works printed but not linked: 9

  1. Siegel RL, Miller KD, Jemal A. Cancer statistics, 2016. CA Cancer J Clin 2016;66:7-30.
  2. Briggs S, Tomlinson I. Germline and somatic polymerase ε and δ mutations define a new class of hypermutated colorectal and endometrial cancers. J Pathol 2013;230:148-153.
  3. Kothari N, Teer JK, Abbott AM, et al. Increased incidence of FBXW7 and POLE proofreading domain mutations in young adult colorectal cancers. Cancer 2016;122:2828-2835.
  4. Bellone S, Centritto F, Black J, et al. Polymerase ε (POLE) ultra-mutated tumors induce robust tumor-specific CD4+ T cell responses in endometrial cancer patients. Gynecol Oncol 2015;138:11-17.
  5. van Gool IC, Eggink FA, Freeman-Mills L, et al. POLE proofreading mutations elicit an antitumor immune response in endometrial cancer. Clin Cancer Res 2015;21:3347-3355.
  6. Rizvi NA, Hellmann MD, Snyder A, et al. Cancer immunology. Mutational landscape determines sensitivity to PD-1 blockade in non-small cell lung cancer. Science 2015;348:124-128.
  7. Santin AD, Bellone S, Buza N, et al. Regression of chemotherapy-resistant polymerase epsilon (POLE) ultra-mutated and MSH6 hyper-mutated endometrial tumors with nivolumab. Clin Cancer Res 2016;22:5682-5687.
  8. Jones S, Emmerson P, Maynard J, et al. Biallelic germline mutations in MYH predispose to multiple colorectal adenoma and somatic G:C-->T:A mutations. Hum Mol Genet 2002;11:2961-2967.
  9. Markowitz S, Wang J, Myeroff L, et al. Inactivation of the type II TGF- beta receptor in colon cancer cells with microsatellite instability. Science 1995;268:1336-1338.

Cited by

Sorted by citations

Authors
Gong, J., Wang, C., Lee, P. P., Chu, P., & Fakih, M.
Affiliations
  • Beckman Research Institute (US)
  • City Of Hope National Medical Center (US)
Corresponding author
Fakih, Marwan
Venue
Journal of the National Comprehensive Cancer Network
Published
2017-02
Volume
15
Issue
2
Pages
142-147
ISSN
  • 1540-1405 (ISSN-L)
  • 1540-1413
OpenAlex
W2593200928
Cited by
207
References
15
Citations by year
2026: 3 · 2025: 9 · 2024: 17 · 2023: 17 · 2022: 32 · 2021: 43 · 2020: 26 · 2019: 31 · 2018: 26 · 2017: 3
FWCI
10.37
Type
journal article
Language
en
Open access
Locations
  • Journal of the National Comprehensive Cancer Network (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Genetic factors in colorectal cancer
  • Health Sciences › Medicine › Oncology › Colorectal Cancer Treatments and Studies
Keywords
metastatic colorectal cancer, POLE mutation, pembrolizumab, anti-PD-1 therapy, anti-PD-1 therapy response, tumor mutational burden, PD-L1 expression, treatment-refractory cancer, predictive biomarkers
MeSH terms
Poly-ADP-Ribose Binding Proteins, Adenocarcinoma, Aged, 80 and over, Antineoplastic Agents, Antineoplastic Combined Chemotherapy Protocols, Biopsy, Carcinoembryonic Antigen, Colonoscopy, DNA Mutational Analysis, DNA Polymerase II, Humans, Male, Mutation, Neoplasm Recurrence, Local, Tomography, X-Ray Computed, Colorectal Neoplasms, Lymphocytes, Tumor-Infiltrating, Proto-Oncogene Proteins p21(ras), CD8-Positive T-Lymphocytes, Microsatellite Repeats, Drug Resistance, Neoplasm, Gene Expression Profiling, High-Throughput Nucleotide Sequencing, Tumor Microenvironment, B7-H1 Antigen, Programmed Cell Death 1 Receptor, Antibodies, Monoclonal, Humanized

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review