Drugging RAS: Moving Beyond KRASG12C

    Cancer Discovery
    |October 23, 2023
    PubMed

    Insights

    Preliminary trials show RMC-6236, a pan-RAS inhibitor, and HRS-4642, a KRASG12D inhibitor, are safe and effective. These novel RAS therapies demonstrate promising antitumor activity, expanding treatment options beyond KRASG12C.

    Area of Science:

    • Oncology
    • Pharmacology
    • Molecular Biology

    Background:

    • RAS proteins are key drivers in many cancers.
    • Targeting RAS mutations, particularly KRAS, is a significant therapeutic challenge.
    • Existing therapies often focus on specific KRAS mutations like KRASG12C.

    Purpose of the Study:

    • To evaluate the safety and preliminary antitumor activity of novel RAS inhibitors.
    • To explore the potential of pan-RAS inhibitors and specific KRAS inhibitors in cancer treatment.
    • To assess the therapeutic landscape beyond KRASG12C-specific drugs.

    Main Methods:

    • Phase I clinical trials were conducted.
    • RMC-6236 (pan-RAS inhibitor) and HRS-4642 (KRASG12D inhibitor) were evaluated.
    • Safety and signs of antitumor activity were assessed.

    Main Results:

    • Both RMC-6236 and HRS-4642 demonstrated a favorable safety profile in Phase I trials.
    • Preliminary data indicate promising signs of antitumor activity for both agents.
    • These results support further development of these novel RAS-targeted therapies.

    Conclusions:

    • RMC-6236 and HRS-4642 represent promising new therapeutic candidates for RAS-driven cancers.
    • The development of broader RAS inhibitors and inhibitors for other KRAS mutations is advancing.
    • These findings contribute to the expanding field of RAS-targeted cancer therapy.