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Sotorasib as First-Line Treatment for Advanced KRAS G12C-Mutated Non-Small Cell Lung Carcinoma: A Case Report.

ABSTRACT: Mutations in the KRAS gene are the most common gain-of-function mutations found in lung adenocarcinomas. The most common mutation, KRAS G12C, is present in 13% of lung adenocarcinomas. Sotorasib (AMG-510) is an irreversible small molecule inhibitor targeting KRAS G12C. In preclinical studies, treatment with sotorasib led to the regression of KRAS G12C-mutated tumors, and clinical efficacy in NSCLC was demonstrated in clinical trials. In May 2021, sotorasib received US FDA approval for treatment of KRAS G12C-mutated locally advanced or metastatic NSCLC who have received at least one prior systemic therapy. In this report, we present a case with metastatic, KRAS G12C-mutated NSCLC who responded favorably to sotorasib as first-line therapy. The efficacy of sotorasib as first-line treatment in this patient was remarkable, which supports further study of sotorasib as first-line therapy for KRAS G12C-mutated NSCLC, especially in fragile patients with comorbidities.

SUBMITTER: Iska S

PROVIDER: S-EPMC10064287 | biostudies-literature | 2023 Jan-Dec

REPOSITORIES: biostudies-literature

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Sotorasib as First-Line Treatment for Advanced KRAS G12C-Mutated Non-Small Cell Lung Carcinoma: A Case Report.

Iska Sindu S Alley Evan W EW

Case reports in oncology 20230101 1

Mutations in the <i>KRAS</i> gene are the most common gain-of-function mutations found in lung adenocarcinomas. The most common mutation, KRAS G12C, is present in 13% of lung adenocarcinomas. Sotorasib (AMG-510) is an irreversible small molecule inhibitor targeting KRAS G12C. In preclinical studies, treatment with sotorasib led to the regression of KRAS G12C-mutated tumors, and clinical efficacy in NSCLC was demonstrated in clinical trials. In May 2021, sotorasib received US FDA approval for tre ...[more]

PMID: 37008835

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Project description:BackgroundNo therapies for targeting KRAS mutations in cancer have been approved. The KRAS p.G12C mutation occurs in 13% of non-small-cell lung cancers (NSCLCs) and in 1 to 3% of colorectal cancers and other cancers. Sotorasib is a small molecule that selectively and irreversibly targets KRASG12C.MethodsWe conducted a phase 1 trial of sotorasib in patients with advanced solid tumors harboring the KRAS p.G12C mutation. Patients received sotorasib orally once daily. The primary end point was safety. Key secondary end points were pharmacokinetics and objective response, as assessed according to Response Evaluation Criteria in Solid Tumors (RECIST), version 1.1.ResultsA total of 129 patients (59 with NSCLC, 42 with colorectal cancer, and 28 with other tumors) were included in dose escalation and expansion cohorts. Patients had received a median of 3 (range, 0 to 11) previous lines of anticancer therapies for metastatic disease. No dose-limiting toxic effects or treatment-related deaths were observed. A total of 73 patients (56.6%) had treatment-related adverse events; 15 patients (11.6%) had grade 3 or 4 events. In the subgroup with NSCLC, 32.2% (19 patients) had a confirmed objective response (complete or partial response) and 88.1% (52 patients) had disease control (objective response or stable disease); the median progression-free survival was 6.3 months (range, 0.0+ to 14.9 [with + indicating that the value includes patient data that were censored at data cutoff]). In the subgroup with colorectal cancer, 7.1% (3 patients) had a confirmed response, and 73.8% (31 patients) had disease control; the median progression-free survival was 4.0 months (range, 0.0+ to 11.1+). Responses were also observed in patients with pancreatic, endometrial, and appendiceal cancers and melanoma.ConclusionsSotorasib showed encouraging anticancer activity in patients with heavily pretreated advanced solid tumors harboring the KRAS p.G12C mutation. Grade 3 or 4 treatment-related toxic effects occurred in 11.6% of the patients. (Funded by Amgen and others; CodeBreaK100 ClinicalTrials.gov number, NCT03600883.).

Project description:BackgroundKRAS p.G12C mutation occurs in approximately 1 to 2% of pancreatic cancers. The safety and efficacy of sotorasib, a KRAS G12C inhibitor, in previously treated patients with KRAS p.G12C-mutated pancreatic cancer are unknown.MethodsWe conducted a single-group, phase 1-2 trial to assess the safety and efficacy of sotorasib treatment in patients with KRAS p.G12C-mutated pancreatic cancer who had received at least one previous systemic therapy. The primary objective of phase 1 was to assess safety and to identify the recommended dose for phase 2. In phase 2, patients received sotorasib at a dose of 960 mg orally once daily. The primary end point for phase 2 was a centrally confirmed objective response (defined as a complete or partial response). Efficacy end points were assessed in the pooled population from both phases and included objective response, duration of response, time to objective response, disease control (defined as an objective response or stable disease), progression-free survival, and overall survival. Safety was also assessed.ResultsThe pooled population from phases 1 and 2 consisted of 38 patients, all of whom had metastatic disease at enrollment and had previously received chemotherapy. At baseline, patients had received a median of 2 lines (range, 1 to 8) of therapy previously. All 38 patients received sotorasib in the trial. A total of 8 patients had a centrally confirmed objective response (21%; 95% confidence interval [CI], 10 to 37). The median progression-free survival was 4.0 months (95% CI, 2.8 to 5.6), and the median overall survival was 6.9 months (95% CI, 5.0 to 9.1). Treatment-related adverse events of any grade were reported in 16 patients (42%); 6 patients (16%) had grade 3 adverse events. No treatment-related adverse events were fatal or led to treatment discontinuation.ConclusionsSotorasib showed anticancer activity and had an acceptable safety profile in patients with KRAS p.G12C-mutated advanced pancreatic cancer who had received previous treatment. (Funded by Amgen and others; CodeBreaK 100 ClinicalTrials.gov number, NCT03600883.).

Dataset Information

Sotorasib as First-Line Treatment for Advanced KRAS G12C-Mutated Non-Small Cell Lung Carcinoma: A Case Report.

Publications

Sotorasib as First-Line Treatment for Advanced KRAS G12C-Mutated Non-Small Cell Lung Carcinoma: A Case Report.

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