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Trial of Atezolizumab Plus Chemotherapy After Progression on PD-1 or PD-L1 in Cisplatin-ineligible Patients With Advanced Urothelial Carcinoma

A Phase II Trial of Atezolizumab Plus Chemotherapy After Progression on PD-1 or PD-L1 Inhibitor in Cisplatin-ineligible Patients With Advanced Urothelial Carcinoma: HCRN GU17-295

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03737123
Enrollment
6
Registered
2018-11-09
Start date
2018-12-19
Completion date
2022-05-18
Last updated
2023-09-13

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

Conditions

Urothelial Carcinoma

Brief summary

This is a single arm phase II study assessing the activity of atezolizumab in combination with carboplatin + gemcitabine or docetaxel compared to historical controls of chemotherapy only in metastatic or recurrent urothelial carcinoma subjects. Subjects that received a PD 1 or PD-L1 inhibitor with no prior platinum chemotherapy for metastatic disease will be treated with atezolizumab + carboplatin + gemcitabine on trial. Subjects that received sequential or concurrent PD1/PDL1 inhibitor and carboplatin-based regimen will be treated with atezolizumab + docetaxel on trial.

Interventions

DRUGCarboplatin

Carboplatin AUC 4 IV Day 1 of each 21 day cycle

DRUGGemcitabine

Gemcitabine 1,000 mg/m2 IV Day 1 and Day 8 of each 21 day cycle

DRUGAtezolizumab

Atezolizumab 1,200 mg IV Day 1 of each 21 day cycle

DRUGDocetaxel

Docetaxel 75 mg/m2 IV Day 1 of each 21 day Cycle.

Sponsors

Genentech, Inc.
CollaboratorINDUSTRY
Indiana University School of Medicine
CollaboratorOTHER
Nabil Adra
Lead SponsorOTHER

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

* Written informed consent and HIPAA authorization for release of personal health information prior to registration. NOTE: HIPAA authorization may be included in the informed consent or obtained separately. * Age ≥ 18 years at the time of consent. * ECOG Performance Status of 0-2 within 28 days prior to registration. * Histological or cytological confirmed metastatic or unresectable locally advanced urothelial carcinoma (primary tumor: renal pelvis, ureters, urinary bladder, or urethra). * Patients with mixed histologies are eligible. * Cisplatin ineligible at the time of diagnosis with metastatic urothelial carcinoma based on consensus definition with any of the following criteria: ECOG PS 2, creatinine clearance \< 60mL/min, CTCAE v4 grade ≥ 2 hearing loss, CTCAE v4 grade ≥ 2 peripheral neuropathy, New York Heart Association (NYHA) class ≥ 3 heart failure. * Measurable disease according to RECIST 1.1 within 28 days prior to registration. * Must have had progressive metastatic disease after previous treatment with PD-1 or PD-L1 inhibitor (in the adjuvant or metastatic setting). Treatment regimen will be determined based on prior treatment: * PD1 or PDL1 inhibitor with no prior platinum chemotherapy for metastatic disease. These patients should be treated with atezolizumab + carboplatin + gemcitabine on trial. * Sequential or concurrent PD1/PDL1 inhibitor and carboplatin-based regimen. These patients should be treated with atezolizumab + docetaxel on trial. * Most recent therapy does not have to have been a checkpoint inhibitor. Intercurrent treatment is acceptable if subjects meet all other inclusion criteria. * A subject with prior brain metastasis may be considered if they have completed their treatment for brain metastasis at least 4 weeks prior to study registration, have been off of corticosteroids for ≥ 2 weeks, and are asymptomatic. * Previous neoadjuvant or adjuvant chemotherapy that was completed 6 months prior to study enrollment is allowed. * REQUIRED archival tumor tissue (prior to treatment with single agent PD-1 or PD-L1 inhibitor) must be identified prior to registration and obtained during the screening period. Confirmation of acquisition should occur prior to C1D1 treatment. Unavailability of tissue will render the subject ineligible for study. Biopsy should be excisional, incisional or core needle. Fine needle aspiration is insufficient. Sample requirement is FFPE block + 1 H&E stained slide or 25 unstained slides + 1 H&E stained slide. * Demonstrate adequate organ function as defined in the table below. All screening labs to be obtained within 28 days prior to registration. * White blood cell (WBC) ≥ 2 k/mm3 * Absolute Neutrophil Count (ANC) ≥ 1.5 K/mm3 * Hemoglobin (Hgb) ≥ 9 g/dL * Platelet \>100k * Estimated creatinine clearance ≥ 30 mL/min * Bilirubin 1.5 ≤ (ULN) * Aspartate aminotransferase (AST) ≤ 1.5 × ULN * Alanine aminotransferase (ALT) ≤ 1.5 × ULN * International Normalized Ratio (INR) or Prothrombin Time (PT) Activated Partial Thromboplastin Time (aPTT) ≤ 2 × ULN (Note: This applies only to patients who are not receiving therapeutic anticoagulation; patients receiving therapeutic anticoagulation should be on a stable dose) * Females of childbearing potential (FOCBP) must have a negative serum pregnancy test within 28 days prior to registration. These women must also have a negative serum or urine pregnancy test (minimum sensitivity 25 IU/L or equivalent units of HCG) within 24 hours prior to the start of atezolizumab then every 6 weeks thereafter. NOTE: Females are considered of child bearing potential unless they are surgically sterile (have undergone a hysterectomy, bilateral tubal ligation, or bilateral oophorectomy) or is post-menopausal. Menopause is defined clinically as 12 months of amenorrhea in a woman over 45 in the absence of other biological or physiological causes. In addition, women under the age of 62 must have a documented serum follicle stimulating hormone (FSH) level less than 40 mIU/mL. * Females of childbearing potential and males must be willing to abstain from heterosexual activity or to use 2 forms of effective methods of contraception from the time of informed consent until 150 days (5 months) after treatment discontinuation. The two contraception methods can be comprised of two barrier methods, or a barrier method plus a hormonal method. * Men who are sexually active with FOCBP must use any contraceptive method with a failure rate of less than 1% per year. Men receiving atezolizumab and who are sexually active with WOCBP will be instructed to adhere to contraception for a period of 150 days (5 months) after the last dose of investigational product. * As determined by the enrolling physician or protocol designee, ability of the subject to understand and comply with study procedures for the entire length of the study.

Exclusion criteria

* Previous autoimmune complication from PD-1 or PD-L1 inhibitor requiring permanent discontinuation of therapy. * Previous permanent discontinuation from PD-1 or PD-L1 inhibitor due to an adverse event (patients who had temporary holds or discontinuation of PD-1 or PD-L1 inhibitor and then re-treated are eligible). * Any serious or uncontrolled medical disorder or active infection that would impair the ability of the subject to receive protocol therapy. * Pregnant or breastfeeding (NOTE: breast milk cannot be stored for future use while the mother is being treated on study). * 5\. Has a known additional malignancy that is progressing or required treatment ≤ 48 months of study registration. Exceptions: include malignancies with negligible risk of metastasis or death treated with expected curative outcome or undergoing surveillance per investigator's discretion (such as adequately treated carcinoma in situ of the cervix, basal or squamous cell skin cancer, ductal carcinoma in situ treated surgically with curative intent, or very low risk or low risk prostate cancer per NCCN guidelines). * Active central nervous system (CNS) metastases. Subjects with brain metastases are eligible if metastases have been treated and there is no magnetic resonance imaging (MRI) evidence of progression within 28 days prior to the first dose of atezolizumab administration. There must also be no requirement for immunosuppressive doses of systemic corticosteroids (\> 10 mg/day prednisone equivalents) for at least 2 weeks prior to study drug administration. * Treatment with any investigational drug within 30 days prior to registration. * Subjects with an active or recent history of a known or suspected autoimmune disease or recent history of a syndrome that required systemic corticosteroids/immunosuppressive medications EXCEPT for syndromes which would not be expected to recur in the absence of an external trigger. (Subjects with vitiligo, autoimmune thyroiditis, or type I diabetes mellitus are permitted to enroll.). * As there is potential for hepatic toxicity with atezolizumab, drugs with a predisposition to hepatoxicity should be used with caution in subjects treated with atezolizumab-containing regimen. * Subjects should be excluded if they have known history of testing positive for hepatitis B virus surface antigen (HBV sAg) or hepatitis C virus ribonucleic acid (HCV antibody) indicating acute or chronic infection. Testing is not required. * Subjects should be excluded if they have known history of testing positive for human immunodeficiency virus (HIV) or known acquired immunodeficiency syndrome (AIDS). Testing is not required. * History of allergy to atezolizumab or respective chemotherapy regimen (carboplatin + gemcitabine or docetaxel).

Design outcomes

Primary

MeasureTime frameDescription
Progression Free Survival (PFS)From C1D1 until progression or death or up to a maximum of 26 monthsEvaluate PFS among patients to be treated with atezolizumab in combination with carboplatin + gemcitabine or docetaxel, who have cisplatin-ineligible metastatic urothelial carcinoma and who have progressed on prior PD-1 or PD-L1 inhibitor. PFS defined as duration from date of treatment start until progression according to RECIST 1.1 criteria, or death from any cause. Per RECIST 1.1 criteria, Progressive disease can be defined as at least a 20% increase in the sum of the longest diameter of target lesions, taking as reference the smallest sum longest diameter recorded since the treatment started or the appearance of one or more new lesions.

Secondary

MeasureTime frameDescription
Objective Response Rate (ORR) With RECIST 1.1From C1D1 until death or up to a maximum of 28 months.Objective response rate (ORR) using RECIST 1.1 defined as the proportion of all subjects with confirmed PR or CR according to RECIST 1.1, from the start of treatment until disease progression/recurrence (taking as reference for progressive disease the smallest measurements recorded since the start of treatment). Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR
Objective Response Rate (ORR) With irRECISTFrom C1D1 until death or up to a maximum of 28 months.ORR defined as the proportion of all subjects with confirmed PR or CR using immunerelated response criteria (irRECIST), from the start of treatment until disease progression/recurrence (taking as reference for progressive disease the smallest measurements recorded since the start of treatment). Per irRECIST for target lesions Complete Response (irCR), Disappearance of all target lesions; Partial Response (irPR), \>=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = irCR + irPR.
Clinical Benefit Rate (CBR) With RECIST 1.1From C1D1 until death or up to a maximum of 28 months.Clinical benefit rate (CBR) of treatment (defined by proportion of all subjects with stable disease for at least 3 months, partial response, or complete response) using RECIST 1.1 from the start of treatment until disease/recurrence(taking as reference for progressive disease the smallest measurements recorded since the start of treatment). Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions, neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum longest diameter since the treatment started; Clinical Benefit Rate (CBR) = CR +PR +SD (for atleast 3 months).
Clinical Benefit Rate (CBR) With irRECISTFrom C1D1 until death or up to a maximum of 28 months.Clinical benefit rate (CBR) of treatment (defined by proportion of all subjects with stable disease for at least 3 months, partial response, or complete response) using irRECIST from the start of treatment until disease progression/recurrence (taking as reference for progressive disease the smallest measurements recorded since the start of treatment). Per irRECIST for target lesions: Complete Response (irCR), Disappearance of all target lesions; Partial Response (irPR), \>=30% decrease in the sum of the longest diameter of target lesions, neither sufficient shrinkage to qualify for irPR nor sufficient increase to qualify for irPD, taking as reference the smallest sum longest diameter since the treatment started; Clinical Benefit Rate (CBR) = irCR +irPR +irSD (for atleast 3 months).
Number of Participants With Adverse Events as a Measure of Safety and Tolerability of Carboplatin + Gemcitabine or DocetaxelFrom C1D1 until death or up to a maximum of 8 monthsAssess the safety and tolerability of the combination of atezolizumab plus chemotherapy (carboplatin + gemcitabine or docetaxel) using CTCAE v4.03. Number of subjects who had any adverse events or events greater than grade 3 were reported in this outcome measure.
Overall Survival (OS)From C1D1 until death or up to a maximum of 28 monthsOS defined by the date of treatment start to date of death from any cause.
Progression Free Survival (PFS) Compared to Historical ControlsFrom C1D1 until progression or death or up to a maximum of 26 monthsTo compare Progression Free Survival(PFS) with the historical control, Null hypothesis - Patients receiving atezolizumab plus chemotherapy (carboplatin +gemcitabine or docetaxel) will have a median PFS of 4 months. Alternative hypothesis - Patients receiving atezolizumab plus chemotherapy (carboplatin + gemcitabine or docetaxel) will have a median PFS of 7.2 months. Progression Free Survival defined as duration from date of treatment start until progression according to RECIST 1.1 criteria, or death from any cause.Per RECIST 1.1 criteria, Progressive disease can be defined as at least a 20% increase in the sum of the longest diameter of target lesions, taking as reference the smallest sum longest diameter recorded since the treatment started or the appearance of one or more new lesions.
Progression Free Survival (PFS) for Atezolizumab + Carboplatin and GemcitabineFrom C1D1 until death or progression or up to a maximum of 26 monthsEvaluate PFS for atezolizumab + carboplatin and gemcitabine. PFS defined as duration from date of treatment start until progression according to RECIST 1.1 criteria, or death from any cause.Per RECIST 1.1 criteria, Progressive disease can be defined as at least a 20% increase in the sum of the longest diameter of target lesions, taking as reference the smallest sum longest diameter recorded since the treatment started or the appearance of one or more new lesions.
Progression Free Survival (PFS) for Atezolizumab + DocetaxelFrom C1D1 until progression or deathEvaluate PFS for atezolizumab + docetaxel. PFS defined as duration from date of treatment start until progression according to RECIST 1.1 criteria, or death from any cause. Per RECIST 1.1 criteria, Progressive disease can be defined as at least a 20% increase in the sum of the longest diameter of target lesions, taking as reference the smallest sum longest diameter recorded since the treatment started or the appearance of one or more new lesions.
PFS by irRECISTFrom C1D1 until progression or death or up to a maximum of 26 monthsPFS defined as duration from date of treatment start until progression according to irRECIST criteria or death from any cause. Per irRECIST criteria, Progressive disease can be defined as at least a 20% increase in the sum of the longest diameter of target lesions, taking as reference the smallest sum longest diameter recorded since the treatment started or the appearance of one or more new lesions.

Countries

United States

Participant flow

Participants by arm

ArmCount
Phase IIA : Atezolizumab + Carboplatin + Gemcitabine
Subjects that received a PD 1 or PD-L1 inhibitor with no prior platinum chemotherapy for metastatic disease will be treated with atezolizumab + carboplatin + gemcitabine on trial. Carboplatin: Carboplatin AUC 4 IV Day 1 of each 21 day cycle Gemcitabine: Gemcitabine 1,000 mg/m2 IV Day 1 and Day 8 of each 21 day cycle Atezolizumab: Atezolizumab 1,200 mg IV Day 1 of each 21 day cycle
6
Phase IIB : Docetaxel + Atezolizumab
Subjects that received sequential or concurrent PD1/PDL1 inhibitor and carboplatin-based regimen will be treated with docetaxel + atezolizumab on trial. Docetaxel: Docetaxel 75 mg/m2 IV Day 1 of each 21 day Cycle. Atezolizumab: Atezolizumab 1,200 mg IV Day 1 of each 21 day cycle.
0
Total6

Withdrawals & dropouts

PeriodReasonFG000FG001
Follow upDeath10
Follow upTermination of study40
Follow upWithdrawal by Subject10
Study TreatmentAdverse Event20
Study TreatmentDisease Progression20
Study TreatmentWithdrawal by Subject20

Baseline characteristics

CharacteristicTotalPhase IIA : Atezolizumab + Carboplatin + GemcitabinePhase IIB : Docetaxel + Atezolizumab
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
6 Participants6 Participants0 Participants
Age, Categorical
Between 18 and 65 years
0 Participants0 Participants0 Participants
ECOG Performance Status
0
4 Participants4 Participants0 Participants
ECOG Performance Status
1
2 Participants2 Participants0 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants1 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
5 Participants5 Participants0 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
1 Participants1 Participants0 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
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
5 Participants5 Participants0 Participants
Sex: Female, Male
Female
1 Participants1 Participants0 Participants
Sex: Female, Male
Male
5 Participants5 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
1 / 6
other
Total, other adverse events
6 / 6
serious
Total, serious adverse events
3 / 6

Outcome results

Primary

Progression Free Survival (PFS)

Evaluate PFS among patients to be treated with atezolizumab in combination with carboplatin + gemcitabine or docetaxel, who have cisplatin-ineligible metastatic urothelial carcinoma and who have progressed on prior PD-1 or PD-L1 inhibitor. PFS defined as duration from date of treatment start until progression according to RECIST 1.1 criteria, or death from any cause. Per RECIST 1.1 criteria, Progressive disease can be defined as at least a 20% increase in the sum of the longest diameter of target lesions, taking as reference the smallest sum longest diameter recorded since the treatment started or the appearance of one or more new lesions.

Time frame: From C1D1 until progression or death or up to a maximum of 26 months

ArmMeasureValue (MEDIAN)
Phase IIA : Atezolizumab + Carboplatin + GemcitabineProgression Free Survival (PFS)11.3 months
Secondary

Clinical Benefit Rate (CBR) With irRECIST

Clinical benefit rate (CBR) of treatment (defined by proportion of all subjects with stable disease for at least 3 months, partial response, or complete response) using irRECIST from the start of treatment until disease progression/recurrence (taking as reference for progressive disease the smallest measurements recorded since the start of treatment). Per irRECIST for target lesions: Complete Response (irCR), Disappearance of all target lesions; Partial Response (irPR), \>=30% decrease in the sum of the longest diameter of target lesions, neither sufficient shrinkage to qualify for irPR nor sufficient increase to qualify for irPD, taking as reference the smallest sum longest diameter since the treatment started; Clinical Benefit Rate (CBR) = irCR +irPR +irSD (for atleast 3 months).

Time frame: From C1D1 until death or up to a maximum of 28 months.

ArmMeasureValue (NUMBER)
Phase IIA : Atezolizumab + Carboplatin + GemcitabineClinical Benefit Rate (CBR) With irRECIST100 percentage of participants
Secondary

Clinical Benefit Rate (CBR) With RECIST 1.1

Clinical benefit rate (CBR) of treatment (defined by proportion of all subjects with stable disease for at least 3 months, partial response, or complete response) using RECIST 1.1 from the start of treatment until disease/recurrence(taking as reference for progressive disease the smallest measurements recorded since the start of treatment). Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions, neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum longest diameter since the treatment started; Clinical Benefit Rate (CBR) = CR +PR +SD (for atleast 3 months).

Time frame: From C1D1 until death or up to a maximum of 28 months.

ArmMeasureValue (NUMBER)
Phase IIA : Atezolizumab + Carboplatin + GemcitabineClinical Benefit Rate (CBR) With RECIST 1.1100 percentage of participants
Secondary

Number of Participants With Adverse Events as a Measure of Safety and Tolerability of Carboplatin + Gemcitabine or Docetaxel

Assess the safety and tolerability of the combination of atezolizumab plus chemotherapy (carboplatin + gemcitabine or docetaxel) using CTCAE v4.03. Number of subjects who had any adverse events or events greater than grade 3 were reported in this outcome measure.

Time frame: From C1D1 until death or up to a maximum of 8 months

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Phase IIA : Atezolizumab + Carboplatin + GemcitabineNumber of Participants With Adverse Events as a Measure of Safety and Tolerability of Carboplatin + Gemcitabine or DocetaxelNumber of patients had at least one grade 3 or greater adverse event6 Participants
Phase IIA : Atezolizumab + Carboplatin + GemcitabineNumber of Participants With Adverse Events as a Measure of Safety and Tolerability of Carboplatin + Gemcitabine or DocetaxelNumber of patients had at least one adverse event of any grade6 Participants
Phase IIA : Atezolizumab + Carboplatin + GemcitabineNumber of Participants With Adverse Events as a Measure of Safety and Tolerability of Carboplatin + Gemcitabine or DocetaxelNumber of patients had at least one grade 3 or greater treatment related adverse event6 Participants
Phase IIA : Atezolizumab + Carboplatin + GemcitabineNumber of Participants With Adverse Events as a Measure of Safety and Tolerability of Carboplatin + Gemcitabine or DocetaxelNumber of patients having serious adverse event3 Participants
Secondary

Objective Response Rate (ORR) With irRECIST

ORR defined as the proportion of all subjects with confirmed PR or CR using immunerelated response criteria (irRECIST), from the start of treatment until disease progression/recurrence (taking as reference for progressive disease the smallest measurements recorded since the start of treatment). Per irRECIST for target lesions Complete Response (irCR), Disappearance of all target lesions; Partial Response (irPR), \>=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = irCR + irPR.

Time frame: From C1D1 until death or up to a maximum of 28 months.

ArmMeasureValue (NUMBER)
Phase IIA : Atezolizumab + Carboplatin + GemcitabineObjective Response Rate (ORR) With irRECIST40 percentage of participants
Secondary

Objective Response Rate (ORR) With RECIST 1.1

Objective response rate (ORR) using RECIST 1.1 defined as the proportion of all subjects with confirmed PR or CR according to RECIST 1.1, from the start of treatment until disease progression/recurrence (taking as reference for progressive disease the smallest measurements recorded since the start of treatment). Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR

Time frame: From C1D1 until death or up to a maximum of 28 months.

ArmMeasureValue (NUMBER)
Phase IIA : Atezolizumab + Carboplatin + GemcitabineObjective Response Rate (ORR) With RECIST 1.140 percentage of participants
Secondary

Overall Survival (OS)

OS defined by the date of treatment start to date of death from any cause.

Time frame: From C1D1 until death or up to a maximum of 28 months

ArmMeasureValue (MEDIAN)
Phase IIA : Atezolizumab + Carboplatin + GemcitabineOverall Survival (OS)NA months
Secondary

PFS by irRECIST

PFS defined as duration from date of treatment start until progression according to irRECIST criteria or death from any cause. Per irRECIST criteria, Progressive disease can be defined as at least a 20% increase in the sum of the longest diameter of target lesions, taking as reference the smallest sum longest diameter recorded since the treatment started or the appearance of one or more new lesions.

Time frame: From C1D1 until progression or death or up to a maximum of 26 months

ArmMeasureValue (MEDIAN)
Phase IIA : Atezolizumab + Carboplatin + GemcitabinePFS by irRECIST11.3 months
Secondary

Progression Free Survival (PFS) Compared to Historical Controls

To compare Progression Free Survival(PFS) with the historical control, Null hypothesis - Patients receiving atezolizumab plus chemotherapy (carboplatin +gemcitabine or docetaxel) will have a median PFS of 4 months. Alternative hypothesis - Patients receiving atezolizumab plus chemotherapy (carboplatin + gemcitabine or docetaxel) will have a median PFS of 7.2 months. Progression Free Survival defined as duration from date of treatment start until progression according to RECIST 1.1 criteria, or death from any cause.Per RECIST 1.1 criteria, Progressive disease can be defined as at least a 20% increase in the sum of the longest diameter of target lesions, taking as reference the smallest sum longest diameter recorded since the treatment started or the appearance of one or more new lesions.

Time frame: From C1D1 until progression or death or up to a maximum of 26 months

ArmMeasureValue (MEDIAN)
Phase IIA : Atezolizumab + Carboplatin + GemcitabineProgression Free Survival (PFS) Compared to Historical Controls11.3 months
Secondary

Progression Free Survival (PFS) for Atezolizumab + Carboplatin and Gemcitabine

Evaluate PFS for atezolizumab + carboplatin and gemcitabine. PFS defined as duration from date of treatment start until progression according to RECIST 1.1 criteria, or death from any cause.Per RECIST 1.1 criteria, Progressive disease can be defined as at least a 20% increase in the sum of the longest diameter of target lesions, taking as reference the smallest sum longest diameter recorded since the treatment started or the appearance of one or more new lesions.

Time frame: From C1D1 until death or progression or up to a maximum of 26 months

ArmMeasureValue (MEDIAN)
Phase IIA : Atezolizumab + Carboplatin + GemcitabineProgression Free Survival (PFS) for Atezolizumab + Carboplatin and Gemcitabine11.3 months
Secondary

Progression Free Survival (PFS) for Atezolizumab + Docetaxel

Evaluate PFS for atezolizumab + docetaxel. PFS defined as duration from date of treatment start until progression according to RECIST 1.1 criteria, or death from any cause. Per RECIST 1.1 criteria, Progressive disease can be defined as at least a 20% increase in the sum of the longest diameter of target lesions, taking as reference the smallest sum longest diameter recorded since the treatment started or the appearance of one or more new lesions.

Time frame: From C1D1 until progression or death

Population: No subject was enrolled in this arm.

Source: ClinicalTrials.gov · Data processed: Feb 19, 2026