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A Study of Atezolizumab in Participants With Locally Advanced or Metastatic Urothelial Bladder Cancer (Cohort 1)

A Phase II, Multicenter, Single-Arm Study of Atezolizumab in Patients With Locally Advanced or Metastatic Urothelial Bladder Cancer

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02951767
Enrollment
119
Registered
2016-11-01
Start date
2014-05-31
Completion date
2023-02-28
Last updated
2024-03-28

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

Conditions

Bladder Cancer

Keywords

anti-PD-L1, PD-L1, MPDL3280A, PD-1, bladder cancer, atezolizumab, Tecentriq

Brief summary

This Phase II, single-arm study is designed to evaluate the effect of atezolizumab treatment in participants with locally advanced or metastatic urothelial bladder cancer. Participants will be enrolled into 1 of 2 cohorts. Cohort 1 (reported here) will consist of participants who are treatment-naïve and ineligible for cisplatin-containing chemotherapy. Cohort 2 will contain participants who have progressed during or following a prior platinum-based chemotherapy regimen. The results of the second cohort are reported separately (NCT02108652). Participants in both cohorts will be given a 1200 milligrams (mg) intravenous (IV) dose of atezolizumab on Day 1 of 21-day cycles. Treatment of participants in Cohort 1 will continue until disease progression per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1) or unmanageable toxicity. Treatment of participants in Cohort 2 will continue until loss of clinical benefit or unmanageable toxicity.

Interventions

DRUGAtezolizumab

Atezolizumab 1200 mg will be given by IV infusion on Day 1 of 21-day cycles until disease progression per RECIST v1.1 criteria or unmanageable toxicity.

Sponsors

Hoffmann-La Roche
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Histologically or cytologically documented locally advanced or metastatic transitional cell carcinoma of the urothelium (including renal pelvis, ureters, urinary bladder, urethra) * Representative tumor specimens as specified by the protocol * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 * Life expectancy greater than or equal to (\>=) 12 weeks * Measurable disease, as defined by RECIST v1.1 * Adequate hematologic and end organ function Cohort 1-Specific Inclusion Criteria * No prior chemotherapy for inoperable locally advanced or metastatic or recurrent urothelial carcinoma * Ineligible for cisplatin-based chemotherapy due to one of the following: Impaired renal function, a hearing loss of 25 decibels (dB) at two contiguous frequencies, Grade 2 or greater peripheral neuropathy, or ECOG performance score of 2

Exclusion criteria

* Any approved anti-cancer therapy within 3 weeks prior to initiation of study treatment * Treatment with any other investigational agent or participation in another clinical trial with therapeutic intent within 28 days prior to enrollment * Active or untreated central nervous system (CNS) metastases as determined by computed tomography (CT) or magnetic resonance imaging (MRI) evaluation during screening and prior radiographic assessments * Leptomeningeal disease * Uncontrolled tumor-related pain * Uncontrolled pleural effusion, pericardial effusion, or ascites requiring recurrent drainage procedures (once monthly or more frequently) * Uncontrolled hypercalcemia (greater than \[\>\] 1.5 millimoles per liter \[mmol/L\] ionized calcium or Ca \> 12 milligrams per deciliter \[mg/dL\] or corrected serum calcium \> upper limits of normal \[ULN\]) or symptomatic hypercalcemia requiring continued use of bisphosphonate therapy or denosumab * Malignancies other than urothelial bladder cancer within 5 years prior to Cycle 1, Day 1, with the exception of those with a negligible risk of metastasis or death treated with expected curative outcome or incidental prostate cancer * Pregnant and lactating women * History of autoimmune disease * History of idiopathic pulmonary fibrosis, organizing pneumonia, drug-induced pneumonitis, idiopathic pneumonitis, or evidence of active pneumonitis on screening chest CT scan * Serum albumin less than (\<) 2.5 grams per deciliter (g/dL) * Positive test for human immunodeficiency virus (HIV) and/or active hepatitis B or hepatitis C or tuberculosis * Severe infections within 4 weeks prior to Cycle 1, Day 1 * Significant cardiovascular disease * Major surgical procedure other than for diagnosis within 28 days prior to Cycle 1, Day 1 * Prior allogeneic stem cell or solid organ transplant * Administration of a live, attenuated vaccine within 4 weeks before Cycle 1, Day 1 * Any other diseases, metabolic dysfunction, physical examination finding, or clinical laboratory finding giving reasonable suspicion of a disease or condition that contraindicates the use of an investigational drug or that may affect the interpretation of the results or render the patient at high risk from treatment complications * Prior treatment with CD137 agonists or immune checkpoint blockade therapies, including anti-cytotoxic T lymphocyte-associated antigen 4 (anti-CTLA-4), anti-programmed death-1 receptor (anti-PD-1), and anti-programmed death-ligand 1 (anti-PD-L1) therapeutic antibodies

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With a Confirmed Objective Response of Complete Response (CR) or Partial Response (PR) as Assessed by the Independent Review Facility (IRF) According to RECIST v1.1Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)Tumor response was assessed by the IRF according to RECIST v1.1. CR was defined as disappearance of all target and non-target lesions and (if applicable) normalization of tumor marker levels. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to less than (\<) 10 millimeters (mm). PR was defined as greater than or equal to (≥) 30 percent (%) decrease in sum of longest diameter (LD) of target lesions in reference to Baseline sum LD. Response was to be confirmed ≥4 weeks after the initial assessment of CR or PR. The percentage of participants with a confirmed objective response of CR or PR was reported. The exact 95% confidence interval (CI) was calculated using the Clopper-Pearson method.

Secondary

MeasureTime frameDescription
DOR as Assessed by the Investigator According to RECIST v1.1Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)DOR was defined as the time from the initial occurrence of documented CR or PR (whichever occurred first) until documented disease progression or death due to any cause on study, whichever occurred first. Tumor response was assessed by the investigator according to RECIST v1.1. CR was defined as disappearance of all target and non-target lesions and no new measurable or unmeasurable lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. PR was defined as ≥30% decrease in sum of LD of target lesions in reference to Baseline sum LD.
Minimum Serum Concentration (Cmin) of AtezolizumabPre-dose (0 hours) on Day 1 of Cycles 1, 2, 3, 4, 8 (Cycle length = 21 days)
Percentage of Participants With Death or Disease Progression as Assessed by the IRF According to RECIST v1.1Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)Tumor response was assessed by the IRF according to RECIST v1.1. Disease progression or PD was defined as ≥20% increase in sum LD in reference to the smallest on-study sum LD, or the appearance of new lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm.
Progression-Free Survival (PFS) as Assessed by the IRF According to RECIST v1.1Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)PFS was defined as the time from start of treatment to the first event of death or PD. Tumor response was assessed by the IRF according to RECIST v1.1. Disease progression or PD was defined as ≥20% increase in sum LD in reference to the smallest on-study sum LD, or the appearance of new lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm.
Percentage of Participants With Death or Disease Progression as Assessed by the Investigator According to RECIST v1.1Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)Tumor response was assessed by the investigator according to RECIST v1.1. Disease progression or PD was defined as ≥20% increase in sum LD in reference to the smallest on-study sum LD, or the appearance of new lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. The percentage of participants who died or experienced PD was reported.
PFS as Assessed by the Investigator According to RECIST v1.1Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)PFS was defined as the time from start of treatment to the first event of death or PD. Tumor response was assessed by the investigator according to RECIST v1.1. Disease progression or PD was defined as ≥20% increase in sum LD in reference to the smallest on-study sum LD, or the appearance of new lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm.
Duration of Response (DOR) as Assessed by the IRF According to RECIST v1.1Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)DOR was defined as the time from the initial occurrence of documented CR or PR (whichever occurred first) until documented disease progression or death due to any cause on study, whichever occurred first. Tumor response was assessed by the IRF according to RECIST v1.1. CR was defined as disappearance of all target and non-target lesions and (if applicable) normalization of tumor marker levels. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. PR was defined as ≥30% decrease in sum of LD of target lesions in reference to Baseline sum LD. Response was to be confirmed ≥4 weeks after the initial assessment of CR or PR.
Percentage of Participants Who DiedBaseline until death (data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)The percentage of participants who died from any cause was reported.
Overall Survival (OS)Baseline until death (data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)OS was defined as the time from start of treatment to the time of death from any cause on study.
Percentage of Participants Alive at 1-year1-year
Maximum Serum Concentration (Cmax) of AtezolizumabPre-dose (0 hours) and 30 minutes post-dose on Day 1 of Cycle 1 (Cycle length = 21 days)
Percentage of Participants Positive for Anti-therapeutic Antibodies (ATA) to AtezolizumabDay 1 of all cycles (Cycle length = 21 days) and at treatment discontinuation (data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)
Percentage of Participants With a Confirmed Objective Response of CR or PR as Assessed by the Investigator According RECIST v1.1Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)Tumor response was assessed by the investigator according to RECIST v1.1. CR was defined as disappearance of all target and non-target lesions and (if applicable) normalization of tumor marker levels. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. PR was defined as ≥30% decrease in sum of LD of target lesions in reference to Baseline sum LD. Response was to be confirmed ≥4 weeks after the initial assessment of CR or PR. The percentage of participants with a confirmed objective response of CR or PR was reported. The exact 95% CI was calculated using the Clopper-Pearson method.

Countries

Canada, France, Germany, Italy, Netherlands, Spain, United Kingdom, United States

Participant flow

Recruitment details

The study is considered Completed because the planned study activities and analyses have been performed.

Pre-assignment details

The analysis included data up to cutoff date 28 February 2023.

Participants by arm

ArmCount
Cohort 1: Treatment-naive Cisplatin Ineligible Participants
Participants with advanced disease who were treatment-naive for advanced urothelial carcinoma and cisplatin ineligible received atezolizumab 1200 mg via IV infusion on Day 1 of 21-day cycles until disease progression per RECIST v1.1 criteria or unmanageable toxicity.
119
Total119

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyDeath96
Overall StudyLost to Follow-up2
Overall StudyPhysician Decision1
Overall StudyStudy Terminated By Sponsor9
Overall StudyWithdrawal by Subject11

Baseline characteristics

CharacteristicCohort 1: Treatment-naive Cisplatin Ineligible Participants
Age, Continuous71.8 years
STANDARD_DEVIATION 8.9
Sex: Female, Male
Female
23 Participants
Sex: Female, Male
Male
96 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
96 / 119
other
Total, other adverse events
110 / 119
serious
Total, serious adverse events
49 / 119

Outcome results

Primary

Percentage of Participants With a Confirmed Objective Response of Complete Response (CR) or Partial Response (PR) as Assessed by the Independent Review Facility (IRF) According to RECIST v1.1

Tumor response was assessed by the IRF according to RECIST v1.1. CR was defined as disappearance of all target and non-target lesions and (if applicable) normalization of tumor marker levels. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to less than (\<) 10 millimeters (mm). PR was defined as greater than or equal to (≥) 30 percent (%) decrease in sum of longest diameter (LD) of target lesions in reference to Baseline sum LD. Response was to be confirmed ≥4 weeks after the initial assessment of CR or PR. The percentage of participants with a confirmed objective response of CR or PR was reported. The exact 95% confidence interval (CI) was calculated using the Clopper-Pearson method.

Time frame: Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)

Population: Cohort 1 objective response-evaluable population included intent-to-treat (ITT) participants who had measurable disease per RECIST v1.1 at baseline. Cohort 1 ITT population included all participants from Cohort 1 who received any amount of study drug.

ArmMeasureValue (NUMBER)
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsPercentage of Participants With a Confirmed Objective Response of Complete Response (CR) or Partial Response (PR) as Assessed by the Independent Review Facility (IRF) According to RECIST v1.122.7 percentage of participants
Secondary

DOR as Assessed by the Investigator According to RECIST v1.1

DOR was defined as the time from the initial occurrence of documented CR or PR (whichever occurred first) until documented disease progression or death due to any cause on study, whichever occurred first. Tumor response was assessed by the investigator according to RECIST v1.1. CR was defined as disappearance of all target and non-target lesions and no new measurable or unmeasurable lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. PR was defined as ≥30% decrease in sum of LD of target lesions in reference to Baseline sum LD.

Time frame: Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)

Population: Cohort 1 objective response-evaluable population. Here, number of participants analyzed = participants who were evaluable for this outcome.

ArmMeasureValue (MEDIAN)
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsDOR as Assessed by the Investigator According to RECIST v1.1NA months
Secondary

Duration of Response (DOR) as Assessed by the IRF According to RECIST v1.1

DOR was defined as the time from the initial occurrence of documented CR or PR (whichever occurred first) until documented disease progression or death due to any cause on study, whichever occurred first. Tumor response was assessed by the IRF according to RECIST v1.1. CR was defined as disappearance of all target and non-target lesions and (if applicable) normalization of tumor marker levels. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. PR was defined as ≥30% decrease in sum of LD of target lesions in reference to Baseline sum LD. Response was to be confirmed ≥4 weeks after the initial assessment of CR or PR.

Time frame: Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)

Population: Cohort 1 objective response-evaluable population. Here, number of participants analyzed = participants who were evaluable for this outcome.

ArmMeasureValue (MEDIAN)
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsDuration of Response (DOR) as Assessed by the IRF According to RECIST v1.1NA months
Secondary

Maximum Serum Concentration (Cmax) of Atezolizumab

Time frame: Pre-dose (0 hours) and 30 minutes post-dose on Day 1 of Cycle 1 (Cycle length = 21 days)

Population: Cohort 1 pharmacokinetic (PK) evaluable population was defined as participants who received any dose of atezolizumab treatment and had PK data at timepoints that were sufficient to determine PK parameters. Here, number of participants analyzed = participants who were evaluable for this outcome.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsMaximum Serum Concentration (Cmax) of Atezolizumab386 microgram(s)/milliliter (mcg/mL)Standard Deviation 118
Secondary

Minimum Serum Concentration (Cmin) of Atezolizumab

Time frame: Pre-dose (0 hours) on Day 1 of Cycles 1, 2, 3, 4, 8 (Cycle length = 21 days)

Population: Cohort 1 PK evaluable population. Here, number of participants analyzed = participants who were evaluable for this outcome. n = participants who were evaluable at specified timepoint.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsMinimum Serum Concentration (Cmin) of AtezolizumabPre-dose Cycle 1 (n=117)0 mcg/mLStandard Deviation 0
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsMinimum Serum Concentration (Cmin) of AtezolizumabPre-dose Cycle 2 (n=106)77.7 mcg/mLStandard Deviation 35.3
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsMinimum Serum Concentration (Cmin) of AtezolizumabPre-dose Cycle 4 (n=66)159 mcg/mLStandard Deviation 68.4
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsMinimum Serum Concentration (Cmin) of AtezolizumabPre-dose Cycle 8 (n=47)169 mcg/mLStandard Deviation 110
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsMinimum Serum Concentration (Cmin) of AtezolizumabPre-dose Cycle 3 (n=57)117 mcg/mLStandard Deviation 48.8
Secondary

Overall Survival (OS)

OS was defined as the time from start of treatment to the time of death from any cause on study.

Time frame: Baseline until death (data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)

Population: Cohort 1 ITT population.

ArmMeasureValue (MEDIAN)
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsOverall Survival (OS)15.9 months
Secondary

Percentage of Participants Alive at 1-year

Time frame: 1-year

Population: Cohort 1 ITT population.

ArmMeasureValue (NUMBER)
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsPercentage of Participants Alive at 1-year57.2 percentage of participants
Secondary

Percentage of Participants Positive for Anti-therapeutic Antibodies (ATA) to Atezolizumab

Time frame: Day 1 of all cycles (Cycle length = 21 days) and at treatment discontinuation (data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)

Population: Cohort 1 Safety Evaluable Population. Here, number of participants analyzed = participants for whom ATA samples were available.

ArmMeasureValue (NUMBER)Dispersion
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsPercentage of Participants Positive for Anti-therapeutic Antibodies (ATA) to Atezolizumab47.7 percentage of participants 0
Secondary

Percentage of Participants Who Died

The percentage of participants who died from any cause was reported.

Time frame: Baseline until death (data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)

Population: Cohort 1 ITT population.

ArmMeasureValue (NUMBER)
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsPercentage of Participants Who Died49.6 percentage of participants
Secondary

Percentage of Participants With a Confirmed Objective Response of CR or PR as Assessed by the Investigator According RECIST v1.1

Tumor response was assessed by the investigator according to RECIST v1.1. CR was defined as disappearance of all target and non-target lesions and (if applicable) normalization of tumor marker levels. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. PR was defined as ≥30% decrease in sum of LD of target lesions in reference to Baseline sum LD. Response was to be confirmed ≥4 weeks after the initial assessment of CR or PR. The percentage of participants with a confirmed objective response of CR or PR was reported. The exact 95% CI was calculated using the Clopper-Pearson method.

Time frame: Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)

Population: Cohort 1 objective response-evaluable population.

ArmMeasureValue (NUMBER)
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsPercentage of Participants With a Confirmed Objective Response of CR or PR as Assessed by the Investigator According RECIST v1.125.2 percentage of participants
Secondary

Percentage of Participants With Death or Disease Progression as Assessed by the Investigator According to RECIST v1.1

Tumor response was assessed by the investigator according to RECIST v1.1. Disease progression or PD was defined as ≥20% increase in sum LD in reference to the smallest on-study sum LD, or the appearance of new lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. The percentage of participants who died or experienced PD was reported.

Time frame: Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)

Population: Cohort 1 ITT population.

ArmMeasureValue (NUMBER)
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsPercentage of Participants With Death or Disease Progression as Assessed by the Investigator According to RECIST v1.171.4 percentage of participants
Secondary

Percentage of Participants With Death or Disease Progression as Assessed by the IRF According to RECIST v1.1

Tumor response was assessed by the IRF according to RECIST v1.1. Disease progression or PD was defined as ≥20% increase in sum LD in reference to the smallest on-study sum LD, or the appearance of new lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm.

Time frame: Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)

Population: Cohort 1 ITT population.

ArmMeasureValue (NUMBER)
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsPercentage of Participants With Death or Disease Progression as Assessed by the IRF According to RECIST v1.173.9 percentage of participants
Secondary

PFS as Assessed by the Investigator According to RECIST v1.1

PFS was defined as the time from start of treatment to the first event of death or PD. Tumor response was assessed by the investigator according to RECIST v1.1. Disease progression or PD was defined as ≥20% increase in sum LD in reference to the smallest on-study sum LD, or the appearance of new lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm.

Time frame: Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)

Population: Cohort 1 ITT population.

ArmMeasureValue (MEDIAN)
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsPFS as Assessed by the Investigator According to RECIST v1.14.17 months
Secondary

Progression-Free Survival (PFS) as Assessed by the IRF According to RECIST v1.1

PFS was defined as the time from start of treatment to the first event of death or PD. Tumor response was assessed by the IRF according to RECIST v1.1. Disease progression or PD was defined as ≥20% increase in sum LD in reference to the smallest on-study sum LD, or the appearance of new lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm.

Time frame: Baseline until confirmed disease progression or death, whichever occurred first (assessed at every 9 weeks for the first 12 months, thereafter every 12 weeks until data cutoff date 04 July 2016, up to maximum length of follow-up of 23.52 months)

Population: Cohort 1 ITT population.

ArmMeasureValue (MEDIAN)
Cohort 1: Treatment-naive Cisplatin Ineligible ParticipantsProgression-Free Survival (PFS) as Assessed by the IRF According to RECIST v1.12.69 months

Source: ClinicalTrials.gov · Data processed: Mar 8, 2026