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A Study of Nivolumab and Ipilimumab Combined With Chemotherapy Compared to Chemotherapy Alone in First Line NSCLC

A Phase 3, Randomized Study of Nivolumab Plus Ipilimumab in Combination With Chemotherapy vs Chemotherapy Alone as First Line Therapy in Stage IV Non-Small Cell Lung Cancer

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03215706
Acronym
CheckMate 9LA
Enrollment
719
Registered
2017-07-12
Start date
2017-08-24
Completion date
2024-10-18
Last updated
2025-12-17

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

Brief summary

The purpose of this study is to determine whether Nivolumab, Ipilimumab combined with chemotherapy is more effective than chemotherapy by itself when treating stage IV NSCLC as the first treatment given for the disease

Interventions

BIOLOGICALIpilimumab

Specified dose on specified day

BIOLOGICALNivolumab

Specified dose on specified day

DRUGCarboplatin

Specified dose on specified day

DRUGPaclitaxel

Specified dose on specified day

DRUGPemetrexed

Specified dose on specified day

DRUGCisplatin

Specified dose on specified day

Sponsors

Bristol-Myers Squibb
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

For more information regarding Bristol-Myers Squibb Clinical Trial participation, please visit www.BMSStudyConnect.com Inclusion Criteria: * Participants with histologically confirmed Stage IV or recurrent NSCLC squamous or non-squamous histology, with no prior systemic anticancer therapy * Eastern Cooperative Oncology Group (ECOG) Performance Status of ≤ 1 * Measurable disease by CT or MRI per response evaluation criteria in solid tumors version 1.1 (RECIST 1.1) criteria * Participants must have PD-L1 IHC testing with results performed by a central laboratory during the screening period

Exclusion criteria

* Participants with known epidermal growth factor receptor (EGFR) mutations which are sensitive to available targeted inhibitor therapy (including, but not limited to, deletions in exon 19 and exon 21 \[L858R\] substitution mutations) are excluded * Participants with known anaplastic lymphoma kinase (ALK) translocations which are sensitive to available targeted inhibitor therapy are excluded * Participants with untreated CNS metastases are excluded. Participants are eligible if CNS metastases are adequately treated and participants are neurologically returned to baseline (except for residual signs or symptoms related to the CNS treatment) for at least 2 weeks prior to first treatment Other protocol inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Overall Survival (OS)From date of randomization to date of death (assessed up to October 2019, approximately 23 months)OS was defined as the time from randomization to the date of death from any cause. OS was censored on the last date a subject was known to be alive. Survival follow-up was to be conducted every 3 months after participants's off-treatment date.

Secondary

MeasureTime frameDescription
Objective Response Rate (ORR) by BICRFrom date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)ORR was defined as the number of randomized participants with a best overall response (BOR) of confirmed CR or PR based on BICR assessments (using RECIST v1.1 criteria), divided by the number of all randomized participants. BOR was recorded between the date of randomization and the date of objectively documented progression per RECIST 1.1 or the date of initiation of palliative local therapy or the date of initiation of subsequent anti-cancer therapy, whichever occurred first. For participants without documented progression or palliative local therapy or subsequent anti-cancer therapy, all available response designations contributed to the BOR determination. For participants who continued treatment beyond progression, the BOR was determined based on response designations recorded up to the time of the initial RECIST 1.1 defined progression.
Duration of Response (DoR)From date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)DoR was defined as the time between the date of first confirmed documented response (CR or PR) to the date of the first documented BICR-assessed tumor progression (per RECIST 1.1), or death from any cause, whichever occurred first. Participants who started subsequent therapy (including palliative local therapy) without a prior reported progression were censored at the last evaluable tumor assessments prior to initiation of the subsequent anticancer therapy (including palliative local therapy). Participants who died without a reported prior progression were considered to have progressed on the date of their death. For subjects who neither progressed nor died, DoR was censored on the date of their last evaluable tumor assessment. DoR was evaluated for responders (confirmed CR or PR) only.
Time to Response (TTR)From date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)TTR was defined as the time from randomization to the date of the first confirmed documented response (CR or PR), as assessed by the BICR. TTR was evaluated for responders (confirmed CR or PR) only.
Objective Response Rate (ORR) by BICR by PD-LI Tumor Cell ExpressionFrom date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)ORR was defined as the proportion of randomized participants with a best overall response (BOR) of confirmed complete or partial response per BICR using RECIST v1.1. BOR was assessed from randomization until documented progression, start of palliative local or subsequent anti-cancer therapy-whichever came first. If none occurred, all response data contributed to BOR. For those treated beyond progression, BOR was based on responses before initial RECIST-defined progression. PD-L1 expression was measured via Dako PD-L1 IHC 28-8 pharmDx test as the percentage of tumor cells with membrane staining among ≥100 evaluable cells. Expression was categorized as ≥1%, \<1%, not quantifiable, ≥50%, or 1-49%.
Progression Free Survival (PFS) by BICRFrom date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)PFS (primary definition) was defined as the time from the randomization date to the date of the first documented tumor progression based on BICR assessment (per RECIST 1.1), or death from any cause, whichever occurred first. Participants who died without a reported prior progression were considered to have progressed on the date of their death. Participants who had not progressed or died were censored on the date of their last evaluable tumor assessment. Participants who did not have any on-study tumor assessments and did not die were censored on the randomization date. Participants who started any palliative local therapy or subsequent anticancer therapy without a prior reported progression were censored at the last evaluable tumor assessment prior to initiation of the palliative local therapy or subsequent anti-cancer therapy, whichever procedure occurred first.
OS by PD-L1 Tumor Cell ExpressionFrom date of randomization to date of death (assessed up to October 2024, approximately 72 months)OS was defined as the time from randomization to the date of death from any cause. OS was censored on the last date a subject was known to be alive. Survival follow-up was to be conducted every 3 months after participants's off-treatment date.
PFS by BICR by Tumor Mutational BurdenFrom date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)PFS (primary definition) was defined as the time from the randomization date to the date of the first documented tumor progression based on BICR assessment (per RECIST 1.1), or death from any cause, whichever occurred first. Participants who died without a reported prior progression were considered to have progressed on the date of their death. Participants who had not progressed or died were censored on the date of their last evaluable tumor assessment. Participants who did not have any on-study tumor assessments and did not die were censored on the randomization date. Participants who started any palliative local therapy or subsequent anticancer therapy without a prior reported progression were censored at the last evaluable tumor assessment prior to initiation of the palliative local therapy or subsequent anti-cancer therapy, whichever procedure occurred first.
ORR by BICR by Tumor Mutational BurdenFrom date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)ORR was defined as the number of randomized participants with a best overall response (BOR) of confirmed CR or PR based on BICR assessments (using RECIST v1.1 criteria), divided by the number of all randomized participants. BOR was recorded between the date of randomization and the date of objectively documented progression per RECIST 1.1 or the date of initiation of palliative local therapy or the date of initiation of subsequent anti-cancer therapy, whichever occurred first. For participants without documented progression or palliative local therapy or subsequent anti-cancer therapy, all available response designations contributed to the BOR determination. For participants who continued treatment beyond progression, the BOR was determined based on response designations recorded up to the time of the initial RECIST 1.1 defined progression.
OS by Tumor Mutational BurdenFrom date of randomization to date of death (assessed up to October 2024, approximately 72 months)OS was defined as the time from randomization to the date of death from any cause. OS was censored on the last date a subject was known to be alive. Survival follow-up was to be conducted every 3 months after participants's off-treatment date.
PFS by BICR by PD-L1 Tumor Cell ExpressionFrom date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)PFS (primary definition) was defined as the time from the randomization date to the date of the first documented tumor progression based on BICR assessment (per RECIST 1.1), or death from any cause, whichever occurred first. Participants who died without a reported prior progression were considered to have progressed on the date of their death. Participants who had not progressed or died were censored on the date of their last evaluable tumor assessment. Participants who did not have any on-study tumor assessments and did not die were censored on the randomization date. Participants who started any palliative local therapy or subsequent anticancer therapy without a prior reported progression were censored at the last evaluable tumor assessment prior to initiation of the palliative local therapy or subsequent anti-cancer therapy, whichever procedure occurred first.

Countries

Argentina, Australia, Belgium, Brazil, Canada, Chile, China, France, Germany, Ireland, Italy, Japan, Mexico, Poland, Romania, Russia, Spain, United Kingdom, United States

Participant flow

Pre-assignment details

707 Randomized and treated

Participants by arm

ArmCount
Treatment A
Nivolumab + Ipilimumab + Chemotherapy
361
Treatment B
Chemotherapy only
358
Total719

Withdrawals & dropouts

PeriodReasonFG000FG001
RandomizationAdverse Event unrelated to study drug10
Randomizationno longer meets study criteria14
Randomizationother reasons02
Randomizationparticipant withdrew consent13
Treatment PeriodAdministrative reason by sponsor02
Treatment PeriodAdverse event unrelated to study drug3127
Treatment PeriodDeath71
Treatment PeriodDisease Progression184174
Treatment PeriodLost to Follow-up01
Treatment PeriodNot reported10
Treatment Periodother reasons105
Treatment PeriodParticipant withdrew consent45
Treatment PeriodRequest to D/C treatment210
Treatment PeriodStudy Drug Toxicity7024

Baseline characteristics

CharacteristicTreatment ATreatment BTotal
Age, Continuous65.0 Years
STANDARD_DEVIATION 8.3
65.0 Years
STANDARD_DEVIATION 10.3
65.0 Years
STANDARD_DEVIATION 9.4
Age, Customized
≥65 and ˂75 years old
148 Count of Participants147 Count of Participants41.0 Count of Participants
Age, Customized
˂65 years old
176 Count of Participants178 Count of Participants49.2 Count of Participants
Age, Customized
≥75 years old
37 Count of Participants33 Count of Participants9.7 Count of Participants
Age, Customized
≥85 years old
0 Count of Participants2 Count of Participants0.3 Count of Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
29 Participants31 Participants60 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
154 Participants158 Participants312 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
178 Participants169 Participants347 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants0 Participants1 Participants
Race (NIH/OMB)
Asian
30 Participants30 Participants60 Participants
Race (NIH/OMB)
Black or African American
5 Participants4 Participants9 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
3 Participants8 Participants11 Participants
Race (NIH/OMB)
White
322 Participants316 Participants638 Participants
Sex: Female, Male
Female
109 Participants106 Participants215 Participants
Sex: Female, Male
Male
252 Participants252 Participants504 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
304 / 361318 / 358
other
Total, other adverse events
343 / 358329 / 349
serious
Total, serious adverse events
259 / 358197 / 349

Outcome results

Primary

Overall Survival (OS)

OS was defined as the time from randomization to the date of death from any cause. OS was censored on the last date a subject was known to be alive. Survival follow-up was to be conducted every 3 months after participants's off-treatment date.

Time frame: From date of randomization to date of death (assessed up to October 2019, approximately 23 months)

Population: All Randomized Participants, Global Population

ArmMeasureValue (MEDIAN)
Treatment AOverall Survival (OS)14.13 Months
Treatment BOverall Survival (OS)10.74 Months
p-value: 0.000695% CI: [0.56, 0.86]Log-rank test stratified
Secondary

Duration of Response (DoR)

DoR was defined as the time between the date of first confirmed documented response (CR or PR) to the date of the first documented BICR-assessed tumor progression (per RECIST 1.1), or death from any cause, whichever occurred first. Participants who started subsequent therapy (including palliative local therapy) without a prior reported progression were censored at the last evaluable tumor assessments prior to initiation of the subsequent anticancer therapy (including palliative local therapy). Participants who died without a reported prior progression were considered to have progressed on the date of their death. For subjects who neither progressed nor died, DoR was censored on the date of their last evaluable tumor assessment. DoR was evaluated for responders (confirmed CR or PR) only.

Time frame: From date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)

Population: All confirmed Responders, Global Population

ArmMeasureValue (MEDIAN)
Treatment ADuration of Response (DoR)13.01 Months
Treatment BDuration of Response (DoR)5.59 Months
Secondary

Objective Response Rate (ORR) by BICR

ORR was defined as the number of randomized participants with a best overall response (BOR) of confirmed CR or PR based on BICR assessments (using RECIST v1.1 criteria), divided by the number of all randomized participants. BOR was recorded between the date of randomization and the date of objectively documented progression per RECIST 1.1 or the date of initiation of palliative local therapy or the date of initiation of subsequent anti-cancer therapy, whichever occurred first. For participants without documented progression or palliative local therapy or subsequent anti-cancer therapy, all available response designations contributed to the BOR determination. For participants who continued treatment beyond progression, the BOR was determined based on response designations recorded up to the time of the initial RECIST 1.1 defined progression.

Time frame: From date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)

Population: All Randomized Participants, Global Population

ArmMeasureValue (NUMBER)
Treatment AObjective Response Rate (ORR) by BICR38.0 Percentage of Participants
Treatment BObjective Response Rate (ORR) by BICR25.1 Percentage of Participants
95% CI: [6, 19.4]Mantel Haenszel
Secondary

Objective Response Rate (ORR) by BICR by PD-LI Tumor Cell Expression

ORR was defined as the proportion of randomized participants with a best overall response (BOR) of confirmed complete or partial response per BICR using RECIST v1.1. BOR was assessed from randomization until documented progression, start of palliative local or subsequent anti-cancer therapy-whichever came first. If none occurred, all response data contributed to BOR. For those treated beyond progression, BOR was based on responses before initial RECIST-defined progression. PD-L1 expression was measured via Dako PD-L1 IHC 28-8 pharmDx test as the percentage of tumor cells with membrane staining among ≥100 evaluable cells. Expression was categorized as ≥1%, \<1%, not quantifiable, ≥50%, or 1-49%.

Time frame: From date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)

Population: All Randomized Participants, Global Population

ArmMeasureGroupValue (NUMBER)
Treatment AObjective Response Rate (ORR) by BICR by PD-LI Tumor Cell ExpressionBASELINE PD-L1 EXPRESSION < 1%31.1 Percentage of Participants
Treatment AObjective Response Rate (ORR) by BICR by PD-LI Tumor Cell ExpressionBASELINE PD-L1 EXPRESSION 1 - 49%38.3 Percentage of Participants
Treatment AObjective Response Rate (ORR) by BICR by PD-LI Tumor Cell ExpressionNon-Quantifiable PD-L1 Expression36.4 Percentage of Participants
Treatment AObjective Response Rate (ORR) by BICR by PD-LI Tumor Cell ExpressionBASELINE PD-L1 EXPRESSION >= 50%50.0 Percentage of Participants
Treatment AObjective Response Rate (ORR) by BICR by PD-LI Tumor Cell ExpressionBASELINE PD-L1 EXPRESSION ≥1%42.6 Percentage of Participants
Treatment BObjective Response Rate (ORR) by BICR by PD-LI Tumor Cell ExpressionBASELINE PD-L1 EXPRESSION >= 50%31.6 Percentage of Participants
Treatment BObjective Response Rate (ORR) by BICR by PD-LI Tumor Cell ExpressionBASELINE PD-L1 EXPRESSION ≥1%27.5 Percentage of Participants
Treatment BObjective Response Rate (ORR) by BICR by PD-LI Tumor Cell ExpressionBASELINE PD-L1 EXPRESSION < 1%20.2 Percentage of Participants
Treatment BObjective Response Rate (ORR) by BICR by PD-LI Tumor Cell ExpressionNon-Quantifiable PD-L1 Expression32.0 Percentage of Participants
Treatment BObjective Response Rate (ORR) by BICR by PD-LI Tumor Cell ExpressionBASELINE PD-L1 EXPRESSION 1 - 49%23.6 Percentage of Participants
Secondary

ORR by BICR by Tumor Mutational Burden

ORR was defined as the number of randomized participants with a best overall response (BOR) of confirmed CR or PR based on BICR assessments (using RECIST v1.1 criteria), divided by the number of all randomized participants. BOR was recorded between the date of randomization and the date of objectively documented progression per RECIST 1.1 or the date of initiation of palliative local therapy or the date of initiation of subsequent anti-cancer therapy, whichever occurred first. For participants without documented progression or palliative local therapy or subsequent anti-cancer therapy, all available response designations contributed to the BOR determination. For participants who continued treatment beyond progression, the BOR was determined based on response designations recorded up to the time of the initial RECIST 1.1 defined progression.

Time frame: From date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)

Population: All Randomized Participants, Global Population with tumor mutational burden measurements

ArmMeasureGroupValue (NUMBER)
Treatment AORR by BICR by Tumor Mutational Burden≥ 10 Mutations/MB45.5 Percentage of Participants
Treatment AORR by BICR by Tumor Mutational Burden< 10 Mutations/MB31.6 Percentage of Participants
Treatment AORR by BICR by Tumor Mutational BurdenOverall37.6 Percentage of Participants
Treatment AORR by BICR by Tumor Mutational BurdenNot Evaluable36.4 Percentage of Participants
Treatment BORR by BICR by Tumor Mutational BurdenNot Evaluable21.2 Percentage of Participants
Treatment BORR by BICR by Tumor Mutational Burden≥ 10 Mutations/MB29.3 Percentage of Participants
Treatment BORR by BICR by Tumor Mutational BurdenOverall27.9 Percentage of Participants
Treatment BORR by BICR by Tumor Mutational Burden< 10 Mutations/MB27.0 Percentage of Participants
Secondary

OS by PD-L1 Tumor Cell Expression

OS was defined as the time from randomization to the date of death from any cause. OS was censored on the last date a subject was known to be alive. Survival follow-up was to be conducted every 3 months after participants's off-treatment date.

Time frame: From date of randomization to date of death (assessed up to October 2024, approximately 72 months)

Population: All Randomized Participants, Global Population with PD-L1 measurements

ArmMeasureGroupValue (MEDIAN)
Treatment AOS by PD-L1 Tumor Cell Expression>= 1% PD-L1 Expression15.80 Months
Treatment AOS by PD-L1 Tumor Cell Expressionwith >= 50% PD-L1 Expression18.91 Months
Treatment AOS by PD-L1 Tumor Cell Expressionwith 1-49% PD-L1 Expression15.20 Months
Treatment AOS by PD-L1 Tumor Cell ExpressionNon-Quantifiable PD-L1 Expression10.84 Months
Treatment AOS by PD-L1 Tumor Cell Expression< 1% PD-L1 Expression17.74 Months
Treatment BOS by PD-L1 Tumor Cell ExpressionNon-Quantifiable PD-L1 Expression17.05 Months
Treatment BOS by PD-L1 Tumor Cell Expression< 1% PD-L1 Expression9.79 Months
Treatment BOS by PD-L1 Tumor Cell Expression>= 1% PD-L1 Expression10.89 Months
Treatment BOS by PD-L1 Tumor Cell Expressionwith 1-49% PD-L1 Expression10.37 Months
Treatment BOS by PD-L1 Tumor Cell Expressionwith >= 50% PD-L1 Expression12.93 Months
Secondary

OS by Tumor Mutational Burden

OS was defined as the time from randomization to the date of death from any cause. OS was censored on the last date a subject was known to be alive. Survival follow-up was to be conducted every 3 months after participants's off-treatment date.

Time frame: From date of randomization to date of death (assessed up to October 2024, approximately 72 months)

Population: All Randomized Participants, Global Population with tumor mutational burden measurements

ArmMeasureGroupValue (MEDIAN)
Treatment AOS by Tumor Mutational Burden≥ 10 Mutations/MB15.05 Months
Treatment AOS by Tumor Mutational Burden< 10 Mutations/MB16.51 Months
Treatment AOS by Tumor Mutational BurdenOverall15.57 Months
Treatment AOS by Tumor Mutational BurdenNot Evaluable17.10 Months
Treatment BOS by Tumor Mutational BurdenNot Evaluable9.46 Months
Treatment BOS by Tumor Mutational Burden≥ 10 Mutations/MB10.76 Months
Treatment BOS by Tumor Mutational BurdenOverall12.06 Months
Treatment BOS by Tumor Mutational Burden< 10 Mutations/MB12.55 Months
Secondary

PFS by BICR by PD-L1 Tumor Cell Expression

PFS (primary definition) was defined as the time from the randomization date to the date of the first documented tumor progression based on BICR assessment (per RECIST 1.1), or death from any cause, whichever occurred first. Participants who died without a reported prior progression were considered to have progressed on the date of their death. Participants who had not progressed or died were censored on the date of their last evaluable tumor assessment. Participants who did not have any on-study tumor assessments and did not die were censored on the randomization date. Participants who started any palliative local therapy or subsequent anticancer therapy without a prior reported progression were censored at the last evaluable tumor assessment prior to initiation of the palliative local therapy or subsequent anti-cancer therapy, whichever procedure occurred first.

Time frame: From date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)

Population: All Randomized Participants, Global Population

ArmMeasureGroupValue (MEDIAN)
Treatment APFS by BICR by PD-L1 Tumor Cell Expression>= 1% PD-L1 Expression6.87 Months
Treatment APFS by BICR by PD-L1 Tumor Cell Expressionwith >= 50% PD-L1 Expression8.28 Months
Treatment APFS by BICR by PD-L1 Tumor Cell Expressionwith 1-49% PD-L1 Expression6.74 Months
Treatment APFS by BICR by PD-L1 Tumor Cell ExpressionNon-Quantifiable PD-L1 Expression6.95 Months
Treatment APFS by BICR by PD-L1 Tumor Cell Expression< 1% PD-L1 Expression5.78 Months
Treatment BPFS by BICR by PD-L1 Tumor Cell ExpressionNon-Quantifiable PD-L1 Expression6.77 Months
Treatment BPFS by BICR by PD-L1 Tumor Cell Expression< 1% PD-L1 Expression4.96 Months
Treatment BPFS by BICR by PD-L1 Tumor Cell Expression>= 1% PD-L1 Expression4.70 Months
Treatment BPFS by BICR by PD-L1 Tumor Cell Expressionwith 1-49% PD-L1 Expression5.29 Months
Treatment BPFS by BICR by PD-L1 Tumor Cell Expressionwith >= 50% PD-L1 Expression4.53 Months
Secondary

PFS by BICR by Tumor Mutational Burden

PFS (primary definition) was defined as the time from the randomization date to the date of the first documented tumor progression based on BICR assessment (per RECIST 1.1), or death from any cause, whichever occurred first. Participants who died without a reported prior progression were considered to have progressed on the date of their death. Participants who had not progressed or died were censored on the date of their last evaluable tumor assessment. Participants who did not have any on-study tumor assessments and did not die were censored on the randomization date. Participants who started any palliative local therapy or subsequent anticancer therapy without a prior reported progression were censored at the last evaluable tumor assessment prior to initiation of the palliative local therapy or subsequent anti-cancer therapy, whichever procedure occurred first.

Time frame: From date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)

Population: All Randomized Participants, Global Population with tumor mutational burden measurements

ArmMeasureGroupValue (MEDIAN)
Treatment APFS by BICR by Tumor Mutational Burden≥ 10 Mutations/MB8.94 Months
Treatment APFS by BICR by Tumor Mutational Burden< 10 Mutations/MB5.62 Months
Treatment APFS by BICR by Tumor Mutational BurdenOverall6.37 Months
Treatment APFS by BICR by Tumor Mutational BurdenNot Evaluable6.74 Months
Treatment BPFS by BICR by Tumor Mutational BurdenNot Evaluable5.45 Months
Treatment BPFS by BICR by Tumor Mutational Burden≥ 10 Mutations/MB4.70 Months
Treatment BPFS by BICR by Tumor Mutational BurdenOverall4.96 Months
Treatment BPFS by BICR by Tumor Mutational Burden< 10 Mutations/MB5.16 Months
Secondary

Progression Free Survival (PFS) by BICR

PFS (primary definition) was defined as the time from the randomization date to the date of the first documented tumor progression based on BICR assessment (per RECIST 1.1), or death from any cause, whichever occurred first. Participants who died without a reported prior progression were considered to have progressed on the date of their death. Participants who had not progressed or died were censored on the date of their last evaluable tumor assessment. Participants who did not have any on-study tumor assessments and did not die were censored on the randomization date. Participants who started any palliative local therapy or subsequent anticancer therapy without a prior reported progression were censored at the last evaluable tumor assessment prior to initiation of the palliative local therapy or subsequent anti-cancer therapy, whichever procedure occurred first.

Time frame: From date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)

Population: All Randomized Participants, Global Population

ArmMeasureValue (MEDIAN)
Treatment AProgression Free Survival (PFS) by BICR6.74 Months
Treatment BProgression Free Survival (PFS) by BICR5.26 Months
95% CI: [0.59, 0.82]Log-rank test stratified
Secondary

Time to Response (TTR)

TTR was defined as the time from randomization to the date of the first confirmed documented response (CR or PR), as assessed by the BICR. TTR was evaluated for responders (confirmed CR or PR) only.

Time frame: From date of randomization until date of documented tumor progression or death due to any cause, whichever occurs first (assessed up to October 2024, approximately 72 months)

Population: All Confirmed Responders, Global Population

ArmMeasureValue (MEDIAN)
Treatment ATime to Response (TTR)2.53 Months
Treatment BTime to Response (TTR)1.58 Months
Post Hoc

Overall Survival (OS)

OS was defined as the time from randomization to the date of death from any cause. OS was censored on the last date a subject was known to be alive. Survival follow-up was to be conducted every 3 months after participants's off-treatment date.

Time frame: From date of randomization to date of death (assessed up to October 2024, approximately 72 months)

Population: All Randomized Participants, Global Population

ArmMeasureValue (MEDIAN)
Treatment AOverall Survival (OS)15.80 Months
Treatment BOverall Survival (OS)10.96 Months
95% CI: [0.63, 0.87]Stratified Cox proportional hazard model

Source: ClinicalTrials.gov · Data processed: Aug 13, 2026