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Related Concept Videos

The Ras Gene02:38

The Ras Gene

The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a superfamily...
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase01:11

Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase

Genetic polymorphisms in drug targets have emerged as critical determinants of interindividual variability in drug response and toxicity. Pharmacogenomic investigations increasingly focus on identifying these variations to personalize and optimize therapeutic interventions. A drug target may be a receptor, enzyme, or signaling protein involved in pharmacologic responses or disease-related pathways. While early pharmacogenetic studies focused primarily on drug metabolism, current research...

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Related Experiment Video

Updated: Jul 3, 2026

Establishing Dual Resistance to EGFR-TKI and MET-TKI in Lung Adenocarcinoma Cells In Vitro with a 2-step Dose-escalation Procedure
09:38

Establishing Dual Resistance to EGFR-TKI and MET-TKI in Lung Adenocarcinoma Cells In Vitro with a 2-step Dose-escalation Procedure

Published on: August 11, 2017

KRAS mutations predict response to EGFR inhibitors.

Mitch Raponi1, Hans Winkler, Nicholas C Dracopoli

  • 1Centocor R&D, 145 King of Prussia Road, Radnor, PA 19086, USA. mraponi1@cntus.jnj.com

Current Opinion in Pharmacology
|July 16, 2008
PubMed
Summary

KRAS mutations can predict patient response to anti-epidermal growth factor receptor (EGFR) therapies. Identifying KRAS status helps exclude patients unlikely to benefit from these cancer treatments.

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Deciphering the Structural Effects of Activating EGFR Somatic Mutations with Molecular Dynamics Simulation
15:05

Deciphering the Structural Effects of Activating EGFR Somatic Mutations with Molecular Dynamics Simulation

Published on: May 20, 2020

Related Experiment Videos

Last Updated: Jul 3, 2026

Establishing Dual Resistance to EGFR-TKI and MET-TKI in Lung Adenocarcinoma Cells In Vitro with a 2-step Dose-escalation Procedure
09:38

Establishing Dual Resistance to EGFR-TKI and MET-TKI in Lung Adenocarcinoma Cells In Vitro with a 2-step Dose-escalation Procedure

Published on: August 11, 2017

Deciphering the Structural Effects of Activating EGFR Somatic Mutations with Molecular Dynamics Simulation
15:05

Deciphering the Structural Effects of Activating EGFR Somatic Mutations with Molecular Dynamics Simulation

Published on: May 20, 2020

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Anti-epidermal growth factor receptor (EGFR) therapies are approved for solid tumors.
  • Current response rates for anti-EGFR therapy are low.
  • Biomarkers can identify patients likely to respond to anti-EGFR therapy.

Purpose of the Study:

  • To evaluate the utility of KRAS mutational status as a predictive biomarker for anti-EGFR therapy.
  • To determine if KRAS mutations can identify patients unlikely to benefit from anti-EGFR therapy.

Main Methods:

  • Review of clinical data on anti-EGFR therapies.
  • Analysis of KRAS gene mutations in tumor samples.
  • Correlation of KRAS mutational status with patient response to anti-EGFR therapy.

Main Results:

  • KRAS acts downstream of the EGFR in signal transduction pathways.
  • Somatic mutations in KRAS can be used to exclude patients unlikely to benefit from anti-EGFR therapy.
  • Clinical data support KRAS mutational status as a diagnostic marker for predicting response.

Conclusions:

  • KRAS mutational status is a valuable diagnostic marker for predicting response to anti-EGFR therapies.
  • Utilizing KRAS status can improve patient selection for anti-EGFR therapy in colorectal and non-small cell lung cancer.
  • KRAS testing can help personalize cancer treatment strategies.