Cited by 194Melanoma and MAPK PathwaysLung Cancer Treatments and MutationsColorectal Cancer Treatments and Studies

Diverse Mechanisms of BRAF Inhibitor Resistance in Melanoma Identified in Clinical and Preclinical Studies

Open access
Luebker, Stephen A., Koepsell, Scott A.·2019·Frontiers in Oncology

Abstract

BRAF inhibitor therapy may provide profound initial tumor regression in metastatic melanoma with BRAF V600 mutations, but treatment resistance often leads to disease progression. A multi-center analysis of BRAF inhibitor resistant patient tissue samples detected genomic changes after disease progression including multiple secondary mutations in the MAPK/Erk signaling pathway, mutant BRAF copy number gains, and BRAF alternative splicing as the predominant putative mechanisms of resistance, but 41.7% of samples had no known resistance drivers. In vitro models of BRAF inhibitor resistance have been developed under a wide variety of experimental conditions to investigate unknown drivers of resistance. Several in vitro models developed genetic alterations observed in patient tissue, but others modulate the response to BRAF inhibitors through increased expression of receptor tyrosine kinases. Both secondary genetic alterations and expression changes in receptor tyrosine kinases may increase activation of MAPK/Erk signaling in the presence of BRAF inhibitors as well as activate PI3K/Akt signaling to support continued growth. Melanoma cells that develop resistance in vitro may have increased dependence on serine or glutamine metabolism and have increased cell motility and metastatic capacity. Future studies of BRAF inhibitor resistance in vitro would benefit from adhering to experimental parameters that reflect development of BRAF inhibitor resistance in patients through using multiple cell lines, fully characterizing the dosing strategy, and reporting the fold change in drug sensitivity.

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 · 10.3389/fonc.2019.00268

Cites

62 of 62 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?

  • Resistance to BRAF inhibitors in melanoma has been associated with an increase in metastasis and disease progression.

    “Resistance to BRAF inhibitors in melanoma has been associated with an increase in metastasis and disease progression [43].”

    From Inhibition of fatty acid synthase enhances therapeutic efficacy and delays acquired resistance to BRAF-targeted therapy in colorectal cancer (2026) · cites this paper as [43]

    The Abstract says BRAF inhibitor resistance often leads to disease progression. The section on phenotypic changes in resistant cell lines reports increased metastatic capacity, but it does not establish an increase in actual metastasis among patients. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Acquired resistance will invariably occur after prolonged treatment with targeted drugs, including RAF and MEK inhibitors.

    “It has been long recognized that acquired resistance will invariably occur after prolonged treatment with targeted drugs, including those against Ras downstream effectors, such as RAF and MEK.72, 73, 74”

    From Overcoming Resistance to Drugs Targeting KRAS Mutation (2020) · cites this paper as [72]

  • Prolonged treatment with either RAF or MEK inhibitors results in rebounded ERK activation due to amplification of upstream drivers such as RTKs and Ras.

    “For example, prolonged treatment of either RAF or MEK inhibitors results in rebounded ERK activation due to the amplification of upstream drivers, such as RTKs and Ras.72,74”

    From Overcoming Resistance to Drugs Targeting KRAS Mutation (2020) · cites this paper as [72]

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

Cited by

Sorted by citations

Authors
Luebker, S. A., & Koepsell, S. A.
Affiliations
University of Nebraska Medical Center (US)
Corresponding author
Luebker, Stephen A.
Venue
Frontiers in Oncology
Published
2019-04-17
Volume
9
Pages
268-268
ISSN
2234-943X (ISSN-L)
OpenAlex
W2938062190
Cited by
194
References
62
Citations by year
2026: 15 · 2025: 21 · 2024: 25 · 2023: 32 · 2022: 27 · 2021: 41 · 2020: 30 · 2019: 3
FWCI
2.23
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Oncology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
University of Nebraska Medical Center
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Melanoma and MAPK Pathways
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Health Sciences › Medicine › Oncology › Colorectal Cancer Treatments and Studies
Keywords
BRAF inhibitor resistance, melanoma, BRAF V600 mutation, ERK signaling, secondary mutations, receptor tyrosine kinase, PI3K/Akt signaling, serine metabolism, glutamine metabolism, cell motility, metastasis, drug sensitivity

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