Skip to content

A Study of Sotorasib (AMG 510) in Participants With Stage IV NSCLC Whose Tumors Harbor a KRAS p.G12C Mutation in Need of First-line Treatment

A Phase 2, Multicenter, Open-label Study of Sotorasib (AMG 510) in Subjects With Stage IV NSCLC Whose Tumors Harbor a KRAS G12C Mutation in Need of First-line Treatment (CodeBreaK 201)

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04933695
Acronym
CodeBreaK201
Enrollment
42
Registered
2021-06-22
Start date
2022-01-28
Completion date
2025-05-28
Last updated
2026-07-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Non-small Cell Lung Cancer

Keywords

Non-small cell lung cancer, KRAS p.G12C, Sotorasib, AMG 510

Brief summary

The main objective of this study is to evaluate the tumor objective response rate (ORR) assessed by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 criteria in participants who receive sotorasib at either 960 mg daily or 240 mg daily whose tumors are programmed death-ligand 1 (PD-L1) Tumor Proportion Score (TPS) \< 1% and/or harbor a serine/threonine kinase 11 (STK11) co-mutation, in a subgroup of participants with PD-L1 \< 1% and in a subgroup of participants with STK11 co-mutation.

Interventions

DRUGSotorasib

Oral tablet

Sponsors

Amgen
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Adult (= or \> 18 years old) with NSCLC * Untreated Stage IV metastatic disease. Participants who received adjuvant or neoadjuvant anti-tumor therapy are eligible if the adjuvant/neoadjuvant therapy was completed greater than 12 months prior to the development of metastatic stage IV disease * Pathologically documented metastatic NSCLC with KRAS G12C mutation (local confirmation) * Programmed death-ligand 1 (PD-L1) TPS Score \< 1% and/or serine/threonine kinase 11 (STK11) co-mutation (local confirmation) * Eastern Cooperative Oncology Group (ECOG) score of 0 or 1 * No active brain metastases * Measurable disease per investigator interpretation using Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 criteria

Exclusion criteria

* Mixed small-cell lung cancer and NSCLC histology * Myocardial Infarction within 6 months of study Day 1 * Use of proton-pump inhibitors (PPIs), histamine (H2) receptor antagonists (H2RA), strong inducers of cytochrome P450 (CYP) 3A4 (CYP3A4) or known CYP3A4 sensitive substrates or P-gp substrates * Therapeutic or palliative radiation therapy within 2 weeks of study day 1 * Unable to take oral medication * Unable to receive both iodinated contrast for computed tomography (CT) scans and gadolinium contrast for magnetic resonance imagine (MRI) scans

Design outcomes

Primary

MeasureTime frameDescription
Objective Response Rate (ORR) Per Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 as Assessed by Blinded Independent Central Review (BICR)From the first dose of trial drug until min (last dose + 30 days, end of trial [EOT]); median [min, max] duration was 5.32 [0.8, 30.9] monthsObjective response was defined as best overall response (BOR) of complete response (CR) or partial response (PR), as defined by RECIST 1.1. CR was defined as the disappearance of all target and non-target lesions (non-lymph nodes). All pathological lymph nodes (whether target or non-target) must have a reduction in their short axis \<10 mm. PR was defined as at least a 30% decrease in the sum of diameter (SOD) of target lesions, taking as reference the baseline sum diameters. Progressive disease (PD) was defined as at least 20% increase (including an absolute increase of at least 5 mm) in the SOD of target lesions, taking as reference the smallest sum and/or unequivocal progression of existing non-target lesions and/or appearance of 1 or more new lesions. Responses were assessed based on BICR.

Secondary

MeasureTime frameDescription
Disease Control Rate (DCR) Per RECIST Version 1.1 as Assessed by BICRFrom randomization until EOT; median [min, max] time on trial was 9.72 [0.8, 38.0] monthsDCR was defined as the percentage of participants with an OR or stable disease (SD) per RECIST v1.1. CR: disappearance of all target lesions. All pathological lymph nodes (whether target or non-target) must have a reduction in their short axis to \<10 mm. PR: at least a 30% decrease in the sum of the longest diameter of target lesions, taking as reference the baseline sum of the longest diameter. SD: neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum diameters while on study. PD: at least a 20% increase in sum of diameters of target lesions, taking as reference the smallest sum on study (this includes baseline sum if that is the smallest on study).
Duration of Response (DOR) Per RECIST Version 1.1 as Assessed by BICRFrom randomization until EOT; median [min, max] time on trial was 9.72 [0.8, 38.0] monthsDOR was defined as time from the first documentation of OR subsequently confirmed until the first documentation of PD or death due to any cause, whichever comes first. CR: disappearance of all target and non-target lesions (non-lymph nodes). All pathological lymph nodes (target or non-target) must have a reduction in their short axis \<10 mm. PR: at least a 30% decrease in the SOD of target lesions, taking as reference the baseline sum diameters. PD: at least 20% increase (including an absolute increase of at least 5 mm) in the SOD of target lesions, taking as reference the smallest sum and/or unequivocal progression of existing non-target lesions and/or appearance of 1 or more new lesions.
Time to Response (TTR) Per RECIST Version 1.1 as Assessed by BICRFrom randomization until EOT; median [min, max] time on trial was 9.72 [0.8, 38.0] monthsTTR was defined as time from first dose date to the first documentation of PR or CR subsequently confirmed. CR was defined as the disappearance of all target and non-target lesions (non-lymph nodes). All pathological lymph nodes (whether target or non-target) must have a reduction in their short axis \<10 mm. PR was defined as at least a 30% decrease in the SOD of target lesions, taking as reference the baseline sum diameters. PD was defined as at least 20% increase (including an absolute increase of at least 5 mm) in the SOD of target lesions, taking as reference the smallest sum and/or unequivocal progression of existing non-target lesions and/or appearance of 1 or more new lesions.
Progression-free Survival (PFS) as Assessed by BICRFrom randomization until EOT; median [min, max] time on trial was 9.72 [0.8, 38.0] monthsPFS by BICR was defined as the time from first dose date to disease progression or death due to any cause (whichever comes first). PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the baseline SOD of target lesions.
Overall Survival (OS)From randomization until EOT; median [min, max] time on trial was 9.72 [0.8, 38.0] monthsOS was defined as the time from first dose date until event of death due to any cause.
Number of Participants With Treatment-emergent Adverse Events (TEAEs) and Treatment-related TEAEsFrom the first dose of trial drug until min (last dose + 30 days, EOT); median [min, max] duration was 5.32 [0.8, 30.9] monthsTEAEs are AEs starting on or after the first dose of sotorasib as determined by the flag indicating if the AE started prior to the first dose on the Events case report form (CRF) and up to and including 30 days after the last dose of sotorasib or the EOT date, whichever is earlier. A treatment-related TEAE is any TEAE with the relationship flag on the events CRF indicating there is a reasonable possibility that the event may have been caused by investigational medicinal product. Clinically significant changes in vital signs, electrocardiograms (ECGs), and clinical laboratory tests were included as TEAEs.
Plasma Concentration of SotorasibCycles 1 and 2: Day 1 pre-dose and 1 hour post-dose; Cycles 3, 4 and, 5: Day 1 pre-dose (cycle length = 21 days)Blood samples were collected at specified timepoints.

Countries

Belgium, Denmark, France, Germany, Italy, Netherlands, Spain, Sweden, Turkey (Türkiye), United States

Contacts

STUDY_DIRECTORMD

Amgen

Participant flow

Recruitment details

A total of 42 participants were enrolled across 17 trial centers in the United States and Europe from January 2022 to May 2025.

Pre-assignment details

Participants received sotorasib at either 960 mg and 240 mg orally, once daily (QD). This trial was discontinued for strategic reasons.

Baseline characteristics

Characteristic
Age, Continuous66.5 years
STANDARD_DEVIATION 9.8
Race/Ethnicity, Customized
Not Hispanic or Latino
42 Participants
Race/Ethnicity, Customized
Other
1 Participants
Race/Ethnicity, Customized
White
41 Participants
Sex: Female, Male
Female
13 Participants
Sex: Female, Male
Male
29 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
15 / 2116 / 21
other
Total, other adverse events
18 / 2120 / 21
serious
Total, serious adverse events
9 / 219 / 21

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 14, 2026