Adagrasib in KRYSTAL-12 has Broken the KRAS G12C Enigma Code in Non-Small Cell Lung Carcinoma
Faustine X Luo1,2, Zhaohui Liao Arter1,2
1University of California Irvine School of Medicine, Orange, CA, 92868, USA.
Abstract:
Kirsten rat sarcoma viral oncogene homolog (KRAS) G12C-mutant non-small cell lung carcinoma (NSCLC) accounts for approximately 10-13% of advanced nonsquamous NSCLC cases in Western populations, presenting a significant therapeutic challenge owing to the difficulty of directly targeting KRAS. Adagrasib, an oral small-molecule covalent inhibitor, irreversibly and selectively targets KRASG12C in its inactive state. It received accelerated Food and Drug Administration (FDA) approval on December 12, 2022, following the KRYSTAL-1 Phase II trial. The Phase III KRYSTAL-12 trial demonstrated that adagrasib significantly improved median progression-free survival (mPFS) compared with docetaxel (HR, 0.58; 95% CI: 0.45-0.76; P<0.0001) and increased the intracranial objective response rate (ORR) to 40% in the central nervous system (CNS) evaluable population. This paper evaluates the clinical efficacy of adagrasib in KRAS G12C-mutated advanced NSCLC discussing its potential advantages over other inhibitors such as sotorasib. Despite not reaching the 6-month mPFS benchmark, adagrasib offers significant clinical benefits, particularly for the management of CNS metastases. In this pros and cons debate, we argue that adagrasib has broken the KRAS G12C enigma code in NSCLC.
Insights
Adagrasib shows significant clinical benefits for advanced KRAS G12C-mutant non-small cell lung cancer, especially in managing brain metastases, offering a new treatment option.
Area of Science:
- Oncology
- Pharmacology
- Genetics
Background:
- KRAS G12C-mutant non-small cell lung cancer (NSCLC) is a therapeutic challenge.
- Targeting KRAS mutations directly has been historically difficult.
Purpose of the Study:
- To evaluate the clinical efficacy of adagrasib in advanced KRAS G12C-mutant NSCLC.
- To discuss adagrasib's advantages over other KRAS inhibitors.
Main Methods:
- Review of clinical trial data, including KRYSTAL-1 Phase II and KRYSTAL-12 Phase III trials.
- Analysis of progression-free survival (PFS) and objective response rate (ORR), including CNS response.
Main Results:
- Adagrasib significantly improved median PFS compared to docetaxel in the KRYSTAL-12 trial.
- Adagrasib demonstrated a 40% intracranial ORR in patients with CNS metastases.
- While not reaching a 6-month PFS benchmark, adagrasib offers substantial clinical benefits.
Conclusions:
- Adagrasib is an effective targeted therapy for KRAS G12C-mutant NSCLC.
- Adagrasib provides significant clinical advantages, particularly for patients with central nervous system metastases.
- Adagrasib represents a breakthrough in targeting the KRAS G12C mutation in NSCLC.
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