Cited by 25Lung Cancer Treatments and MutationsMelanoma and MAPK PathwaysCancer Genomics and Diagnostics

Oncogene Overdose: Too Much of a Bad Thing for Oncogene-Addicted Cancer Cells

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Amin, Amit Dipak, Rajan, Soumya S., Groysman, Matthew J., Pongtornpipat, Praechompoo, schatz, Jonathan H.·2015·Biomarkers in Cancer

Abstract

Acquired resistance to targeted inhibitors remains a major, and inevitable, obstacle in the treatment of oncogene-addicted cancers. Newer-generation inhibitors may help overcome resistance mutations, and inhibitor combinations can target parallel pathways, but durable benefit to patients remains elusive in most clinical scenarios. Now, recent studies suggest a third approach may be available in some cases—exploitation of oncogene overexpression that may arise to promote resistance. Here, we discuss the importance of maintaining oncogenic signaling at “just-right” levels in cells, with too much signaling, or oncogene overdose, being potentially as detrimental as too little. This is highlighted in particular by recent studies of mutant-BRAF in melanoma and the fusion kinase nucleophosmin-anaplastic lymphoma kinase (NPM-ALK) in anaplastic large cell lymphoma. Oncogene overdose may be exploitable to prolong tumor control through intermittent dosing in some cases, and studies of acute lymphoid leukemias suggest that it may be specifically pharmacologically inducible.

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Crossref · 10.4137/bic.s29326

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  • Activating the MAPK pathway by mutant KRAS and the PI3K pathway by PIK3CA mutation with Her2 amplification may be harmful due to too much oncogene signaling.

    “Because cytoplasmic KRAS localization suppresses KRAS–MAPK pathway activity at low levels, activating the MAPK pathway by mutant KRAS and the PI3K pathway by PIK3CA mutation with Her2 amplification may be harmful due to too much oncogene signaling45,46.”

    From Mechanisms of KRAS inhibitor resistance in KRAS-mutant colorectal cancer harboring Her2 amplification and aberrant KRAS localization (2025) · cites this paper as [46]

    The “MAPK cascade and the Goldilocks principle” section (page unavailable) says excessive RAS–RAF–MEK–ERK signaling can cause senescence, supporting the idea that too much oncogene signaling may be harmful. It does not address the specific combination of mutant KRAS, PIK3CA mutation, and HER2 amplification or establish that activating both pathways in that setting is harmful. (LLM, conf=0.86)

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Authors
Amin, A. D., Rajan, S. S., Groysman, M. J., Pongtornpipat, P., & schatz, J. H.
Affiliations
  • University of Miami (US)
  • University of Arizona Cancer Center (US)
  • BIO5 Institute (US)
Corresponding author
schatz, Jonathan H.
Venue
Biomarkers in Cancer
Published
2015-01
Volume
7s2
Issue
Suppl 2
Pages
BIC.S29326
ISSN
1179-299X (ISSN-L)
OpenAlex
W2215206605
Cited by
25
References
86
Citations by year
2026: 1 · 2025: 6 · 2024: 3 · 2023: 3 · 2022: 3 · 2021: 1 · 2020: 2 · 2019: 2 · 2016: 4
FWCI
0.24
Type
journal article
Language
en
Open access
Locations
  • Biomarkers in Cancer (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
National Cancer Institute (R01CA190696)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Melanoma and MAPK Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer Genomics and Diagnostics
Keywords
oncogene addiction, acquired drug resistance, targeted therapy resistance, melanoma, NPM-ALK, anaplastic large cell lymphoma, intermittent dosing, acute lymphoblastic leukemia, oncogenic signaling

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