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A Randomized Phase 2 Study of Atezolizumab (an Engineered Anti-PDL1 Antibody) Compared With Docetaxel in Participants With Locally Advanced or Metastatic Non-Small Cell Lung Cancer Who Have Failed Platinum Therapy - POPLAR

A Phase II, Open-label, Multicenter, Randomized Study to Investigate the Efficacy and Safety of MPDL3280A (Anti-PD-L1 Antibody) Compared With Docetaxel in Patients With Non-Small Cell Lung Cancer After Platinum Failure

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01903993
Enrollment
287
Registered
2013-07-19
Start date
2013-08-06
Completion date
2018-09-06
Last updated
2019-10-02

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

This multicenter, open-label, randomized study will evaluate the efficacy and safety of Atezolizumab compared with docetaxel in participants with advanced or metastatic non-small cell lung cancer after platinum failure. Participants will be randomized to receive either Atezolizumab 1200 milligram (mg) intravenously every 3 weeks or docetaxel 75 milligram per meter square (mg/m\^2) intravenously every 3 weeks. Treatment with Atezolizumab may be continued as long as participants are experiencing clinical benefit as assessed by the investigator, i.e., in the absence of unacceptable toxicity or symptomatic deterioration attributed to disease progression.

Interventions

DRUGDocetaxel

Participants received starting dose of 75 mg/m\^2 every three week (q3w) until disease progression, unacceptable toxicity or death. Dose modifications were according to the locally approved label. Participants randomized to receive docetaxel had to be premedicated with corticosteroids according to local practice.

DRUGAtezolizumab

Participants received atezolizumab of 1200 mg (equivalent to an average body weight-based dose of 15 milligram per kilogram \[mg/kg\]) which was administered by IV infusion q3w on Day 1 of each 21 day cycle. Participants were allowed to continue treatment beyond progression per response evaluation criteria in solid tumors (RECIST) v1.1 if they were experiencing clinical benefit per investigator, did not have a decline in performance status, did not have signs or symptoms of unequivocal progression, did not have tumor progression at critical sites, and signed an informed consent signature page acknowledging deferment any standard treatment options that may exist in favor of continuing atezolizumab.

Sponsors

Hoffmann-La Roche
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 participants, \>/= 18 years of age * Locally advanced or metastatic (Stage IIIB, Stage IV, or recurrent) non-small cell lung cancer (NSCLC) * Representative formalin-fixed paraffin-embedded (FFPE) tumor specimens * Disease progression during or following treatment with a prior platinum-containing regimen for locally advanced, unresectable/inoperable or metastatic NSCLC or disease recurrence within 6 months of treatment with a platinum-based adjuvant/neoadjuvant regimen * Measurable disease, as defined by RECIST v1.1 * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1

Exclusion criteria

* Known active or untreated central nervous system (CNS) metastases as determined by CT or MRI evaluation during screening and prior radiographic assessments * Malignancies other than NSCLC within 5 years prior to randomization, with the exception of those with a negligible risk of metastasis or death and treated with expected curative outcome * History of autoimmune disease * History of idiopathic pulmonary fibrosis (including pneumonitis), drug-induced pneumonitis, organizing pneumonia, or evidence of active pneumonitis on screening chest CT scan. History of radiation pneumonitis in the radiation field (fibrosis) is permitted. * Active hepatitis B or hepatitis C * Prior treatment with docetaxel * Prior treatment with CD137 agonists, anti-CTLA4, anti-PD-1, or anti-PD-L1 therapeutic antibody or pathway-targeting agents

Design outcomes

Primary

MeasureTime frameDescription
Overall Survival (OS)From the time of randomization to the date of death due to any cause or up to data cut off date: 01 Dec 2015 (up to 28 months)Overall Survival (OS) was defined as the time from the date of randomization to the date of death due to any cause. Data for participants who were not reported as dead at the time of analysis was censored at the date when they were last known to be alive.

Secondary

MeasureTime frameDescription
Objective Response Rate (ORR)Baseline until date of death due to any cause or up to data cut off date: 01 Dec 2015 (up to 28 months)ORR was defined as the percentage of participants with confirmed objective tumor response, complete response (CR) or partial response (PR), as determined by investigator using RECIST v1.1 criteria. CR: disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \< 10 mm. PR: at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters.
Progression-Free Survival (PFS)From the time of randomization to the date of death due to any cause or up to data cut off date: 01 Dec 2015 (up to 28 months)PFS was defined as the time (in months) between the date of randomization and the date of first documented disease progression or death, whichever occurs first. Disease progression was determined based on investigator assessment using response evaluation criteria In solid tumors (RECIST) v1.1. Progressive disease (PD): at least a 20% increase in the sum of diameters of target lesions including baseline In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. The appearance of one or more new lesions is also considered progression.
Duration of Response (DOR)From the time of randomization to the date of death due to any cause or up to data cut off date: 01 Dec 2015 (up to 28 months)DOR was defined as the duration from the first tumor assessment that supports the participant's objective response (CR or PR, whichever is first recorded) to disease progression or death due to any cause, whichever occurs first.
ORR (Modified RECIST)From the time of randomization to the date of death due to any cause or up to data cut off date: 08 May 2015 (up to 21 months)ORR was defined as the percentage of participants with confirmed objective tumor response, CR or PR, as determined by investigator using modified RECIST criteria. CR: disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to l\< 10 mm. PR: at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters.
PFS (Modified RECIST)From the time of randomization to the date of death due to any cause or up to data cut off date: 08 May 2015 (up to 21 months)PFS was defined as the time (in months) between the date of randomization and the date of first documented disease progression or death, whichever occurs first. Disease progression was determined based on investigator assessment using modified RECIST criteria. PD: at least a 20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. The appearance of one or more new lesions is also considered progression.
DOR (Modified RECIST)From the time of randomization to the date of death due to any cause or up to data cut off date: 08 May 2015 (up to 21 months)DOR was defined as the duration from the first tumor assessment that supports the participant's objective response (CR or PR, whichever is first recorded) to disease progression or death due to any cause, whichever occurs first.

Countries

Belgium, Canada, France, Germany, Italy, Poland, South Korea, Spain, Sweden, Thailand, Turkey (Türkiye), United Kingdom, United States

Participant flow

Pre-assignment details

A total of 527 participants were screened, of whom 287 participants were randomized. 143 participants to the docetaxel arm and 144 participants to the atezolizumab arm. Overall, 10 participants (8 in the docetaxel arm and 2 in the atezolizumab arm) did not receive any study treatment.

Participants by arm

ArmCount
Docetaxel
Participants received docetaxel 75 milligram per squared meters (mg/m\^2) administered intravenously on Day 1 of each 21 day cycle until disease progression or unacceptable toxicity or death.
143
Atezolizumab
Participants were administered atezolizumab intravenously on Day 1 of each 21 day cycle at a fixed dose of 1200 mg. Atezolizumab treatment were to continued as long as participants were experiencing clinical benefit as assessed by the investigator.
144
Total287

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyDeath118121
Overall StudyLost to Follow-up23
Overall StudyStudy Terminated by Sponsor814
Overall StudyTerminated by Sponsor After 31 Aug 201802
Overall StudyWithdrawal by Subject154

Baseline characteristics

CharacteristicDocetaxelAtezolizumabTotal
Age, Continuous61.8 years
STANDARD_DEVIATION 9.4
61.5 years
STANDARD_DEVIATION 9.2
61.6 years
STANDARD_DEVIATION 9.3
Sex: Female, Male
Female
67 Participants51 Participants118 Participants
Sex: Female, Male
Male
76 Participants93 Participants169 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
118 / 143121 / 144
other
Total, other adverse events
125 / 135127 / 142
serious
Total, serious adverse events
46 / 13553 / 142

Outcome results

Primary

Overall Survival (OS)

Overall Survival (OS) was defined as the time from the date of randomization to the date of death due to any cause. Data for participants who were not reported as dead at the time of analysis was censored at the date when they were last known to be alive.

Time frame: From the time of randomization to the date of death due to any cause or up to data cut off date: 01 Dec 2015 (up to 28 months)

Population: ITT population for efficacy analyses included all randomized participants, regardless of whether they received any study drug. In the efficacy analyses, the ITT population, participants were grouped according to the treatment arm to which they were assigned.

ArmMeasureValue (MEDIAN)
DocetaxelOverall Survival (OS)9.7 months
AtezolizumabOverall Survival (OS)12.6 months
Comparison: Hazard ratios (HR) were estimated by a Cox regression model.p-value: =0.010695% CI: [0.52, 0.92]Log rank (Stratified)
Secondary

DOR (Modified RECIST)

DOR was defined as the duration from the first tumor assessment that supports the participant's objective response (CR or PR, whichever is first recorded) to disease progression or death due to any cause, whichever occurs first.

Time frame: From the time of randomization to the date of death due to any cause or up to data cut off date: 08 May 2015 (up to 21 months)

Population: ITT population for efficacy analyses included all randomized participants, regardless of whether they received any study drug. Here, number of participants analyzed signifies the number of participants who were evaluable for this outcome measure. The data was planned to be reported for Atezolizumab arm only.

ArmMeasureValue (MEDIAN)
DocetaxelDOR (Modified RECIST)14.9 months
Secondary

Duration of Response (DOR)

DOR was defined as the duration from the first tumor assessment that supports the participant's objective response (CR or PR, whichever is first recorded) to disease progression or death due to any cause, whichever occurs first.

Time frame: From the time of randomization to the date of death due to any cause or up to data cut off date: 01 Dec 2015 (up to 28 months)

Population: ITT population for efficacy analyses included all randomized participants, regardless of whether they received any study drug. Here, number of participants analyzed signifies the number of participants who were evaluable for this outcome measure.

ArmMeasureValue (MEDIAN)
DocetaxelDuration of Response (DOR)7.2 months
AtezolizumabDuration of Response (DOR)18.6 months
Comparison: HR were estimated by a unstratified Cox regression model.p-value: =0.002895% CI: [0.15, 0.7]Log rank (unstratified)
Secondary

Objective Response Rate (ORR)

ORR was defined as the percentage of participants with confirmed objective tumor response, complete response (CR) or partial response (PR), as determined by investigator using RECIST v1.1 criteria. CR: disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \< 10 mm. PR: at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters.

Time frame: Baseline until date of death due to any cause or up to data cut off date: 01 Dec 2015 (up to 28 months)

Population: ITT population for efficacy analyses included all randomized participants, regardless of whether they received any study drug. In the efficacy analyses, the ITT population, participants were grouped according to the treatment arm to which they were assigned.

ArmMeasureValue (NUMBER)
DocetaxelObjective Response Rate (ORR)14.7 percentage of participants
AtezolizumabObjective Response Rate (ORR)15.3 percentage of participants
p-value: =0.888495% CI: [-7.67, 8.85]Cochran-Mantel-Haenszel
Secondary

ORR (Modified RECIST)

ORR was defined as the percentage of participants with confirmed objective tumor response, CR or PR, as determined by investigator using modified RECIST criteria. CR: disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to l\< 10 mm. PR: at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters.

Time frame: From the time of randomization to the date of death due to any cause or up to data cut off date: 08 May 2015 (up to 21 months)

Population: ITT population for efficacy analyses included all randomized participants, regardless of whether they received any study drug. In the efficacy analyses, the ITT population, participants were grouped according to the treatment arm to which they were assigned. The data was planned to be reported for Atezolizumab arm only

ArmMeasureValue (NUMBER)
DocetaxelORR (Modified RECIST)16.7 percentage of participants
Secondary

PFS (Modified RECIST)

PFS was defined as the time (in months) between the date of randomization and the date of first documented disease progression or death, whichever occurs first. Disease progression was determined based on investigator assessment using modified RECIST criteria. PD: at least a 20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. The appearance of one or more new lesions is also considered progression.

Time frame: From the time of randomization to the date of death due to any cause or up to data cut off date: 08 May 2015 (up to 21 months)

Population: ITT population for efficacy analyses included all randomized participants, regardless of whether they received any study drug. In the efficacy analyses, the ITT population, participants were grouped according to the treatment arm to which they were assigned. The data was planned to be reported for Atezolizumab arm only

ArmMeasureValue (MEDIAN)
DocetaxelPFS (Modified RECIST)4.2 months
Secondary

Progression-Free Survival (PFS)

PFS was defined as the time (in months) between the date of randomization and the date of first documented disease progression or death, whichever occurs first. Disease progression was determined based on investigator assessment using response evaluation criteria In solid tumors (RECIST) v1.1. Progressive disease (PD): at least a 20% increase in the sum of diameters of target lesions including baseline In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. The appearance of one or more new lesions is also considered progression.

Time frame: From the time of randomization to the date of death due to any cause or up to data cut off date: 01 Dec 2015 (up to 28 months)

Population: ITT population for efficacy analyses included all randomized participants, regardless of whether they received any study drug. In the efficacy analyses, the ITT population, participants were grouped according to the treatment arm to which they were assigned.

ArmMeasureValue (MEDIAN)
DocetaxelProgression-Free Survival (PFS)3.4 months
AtezolizumabProgression-Free Survival (PFS)2.7 months
Comparison: HR were estimated by a Cox regression model. The two treatment comparison was based on a stratified log-rank test.p-value: =0.556395% CI: [0.71, 1.2]Log rank (Stratified)

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