Cited by 61Lung Cancer Treatments and MutationsCancer Immunotherapy and BiomarkersLung Cancer Diagnosis and Treatment

KRASG12C/TP53 co-mutations identify long-term responders to first line palliative treatment with pembrolizumab monotherapy in PD-L1 high (≥50%) lung adenocarcinoma

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Frost, Nikolaj, Kollmeier, Jens, Vollbrecht, Claudia, Grah, Christian, Matthes, Burkhard, Pultermann, Dennis, von Laffert, Maximilian, Lüders, Heike +9 more·2021·Translational Lung Cancer Research

Abstract

Background: Pembrolizumab is a standard of care as first line palliative therapy in PD-L1 overexpressing (≥50%) non-small cell lung cancer (NSCLC). This study aimed at the identification of KRAS and TP53-defined mutational subgroups in the PD-L1 high population to distinguish long-term responders from those with limited benefit. Methods: In this retrospective, observational study, patients from 4 certified lung cancer centers in Berlin, Germany, having received pembrolizumab monotherapy as first line palliative treatment for lung adenocarcinoma (LuAD) from 2017 to 2018, with PD-L1 expression status and targeted NGS data available, were evaluated. Results: A total of 119 patients were included. Rates for KRAS, TP53 and combined mutations were 52.1%, 47.1% and 21.9%, respectively, with no association given between KRAS and TP53 mutations (P=0.24). By trend, PD-L1 expression was higher in KRAS-positive patients (75% vs. 65%, P=0.13). Objective response rate (ORR), median progression-free survival (PFS) and overall survival (OS) in the KRASG12C group (n=32, 51.6%) were 63.3%, 19.8 months (mo.) and not estimable (NE), respectively. Results in KRASother and wild type patients were similar and by far lower (42.7%, P=0.06; 6.2 mo., P<0.001; 23.4 mo., P=0.08). TP53 mutations alone had no impact on response and survival. However, KRASG12C/TP53 co-mutations (n=12) defined a subset of long-term responders (ORR 100.0%, PFS 33.3 mo., OS NE). In contrast, patients with KRASother/TP53 mutations showed a dismal prognosis (ORR 27.3%, P=0.002; PFS 3.9 mo., P=0.001, OS 9.7 mo., P=0.02). Conclusions: A comprehensive assessment of KRAS subtypes and TP53 mutations allows a highly relevant prognostic differentiation of patients with metastatic, PD-L1 high LuAD treated upfront with pembrolizumab.

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  • Early data suggest KRAS alleles other than G12C, especially with TP53 co-mutation, may be negative predictive biomarkers for anti-PD-1/PD-L1 inhibitors in NSCLC.

    “Early data suggests that the presence of KRAS alleles other than G12C mutations (75), especially in conjunction with a TP53 co-mutation, may represent a negative predictive biomarkers for anti-PD-1/PD-L1 immune checkpoint inhibitors in NSCLC patients (76).”

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Authors
Frost, N., Kollmeier, J., Vollbrecht, C., Grah, C., Matthes, B., Pultermann, D., von Laffert, M., Lüders, H., Olive, E., Raspe, M., Mairinger, T., Ochsenreither, S., Blum, T., Hummel, M., Suttorp, N., Witzenrath, M., & Grohé, C.
Affiliations
  • Humboldt-Universität zu Berlin (DE)
  • Helios Klinikum Emil von Behring (DE)
  • Gemeinschaftskrankenhaus Havelhöhe (DE)
  • Evangelische Lungenklinik Berlin (DE)
Corresponding author
Frost, Nikolaj
Venue
Translational Lung Cancer Research
Published
2021-02
Volume
10
Issue
2
Pages
737-752
ISSN
  • 2218-6751 (ISSN-L)
  • 2226-4477
OpenAlex
W3134778331
Cited by
61
References
44
Citations by year
2026: 10 · 2025: 10 · 2024: 12 · 2023: 8 · 2022: 18 · 2021: 3
FWCI
6.63
Type
journal article
Language
en
Open access
Licence
cc-by-nc-nd
Locations
  • Translational Lung Cancer Research (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Refubium (Universitätsbibliothek der Freien Universität Berlin) (submittedVersion, cc-by-nc-nd)
  • Universitätsbibliothek der FU Berlin Hochschulschriftenstelle u. Dokumentenserver
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Diagnosis and Treatment
Keywords
TP53 mutation, PD-L1 expression, lung adenocarcinoma, non-small cell lung cancer, predictive biomarkers, long-term response, objective response rate, progression-free survival, overall survival, immunotherapy response

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