A Study of Atezolizumab Plus Tiragolumab in Combination With Paclitaxel and Cisplatin Compared With Paclitaxel and Cisplatin as First-Line Treatment in Participants With Unresectable Locally Advanced, Unresectable Recurrent, or Metastatic Esophageal Carcinoma (SKYSCRAPER-08)

August 4, 2026 updated by: Hoffmann-La Roche

A Phase III, Randomized, Double-Blind, Placebo-Controlled Study of Atezolizumab Plus Tiragolumab in Combination With Paclitaxel and Cisplatin Compared With Paclitaxel and Cisplatin as First-Line Treatment in Patients With Unresectable Locally Advanced, Unresectable Recurrent, or Metastatic Esophageal Squamous Cell Carcinoma

The purpose of this study is to evaluate the efficacy and safety of atezolizumab plus tiragolumab in combination with paclitaxel and cisplatin (PC) compared with atezolizumab matching placebo plus tiragolumab matching placebo plus PC as first-line treatment in participants with unresectable locally advanced, unresectable recurrent, or metastatic esophageal carcinoma (EC). Participants will be randomized in a 1:1 ratio to receive one of the following treatment regimens during induction phase:

Arm A: Atezolizumab plus Tiragolumab and PC Arm B: Atezolizumab placebo plus Tiragolumab placebo and PC Following the induction phase, participants will continue maintenance therapy with either atezolizumab plus tiragolumab (Arm A) or atezolizumab matching placebo plus tiragolumab matching placebo (Arm B).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
461

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • China
      • Anhui, China, 230001
        • Anhui Provincial Hospital
      • Anyang, China, 455000
        • Anyang Tumor Hosptial
      • Beijing, China
        • Beijing Luhe Hospital Capital Medical University
      • Changchun, China, 130021
        • The First Hospital of Jilin University
      • Changchun, China, 132013
        • Jilin cancer hospital
      • Changsha, China, 410013
        • Hunan Cancer Hospital
      • Chengde, China, 067020
        • Affiliated Hospital of Chengde Medical University
      • Chengdu, China, 610041
        • West China Hospital, Sichuan University
      • Chengdu, China, 610041
        • Sichuan Provincial Cancer Hospital
      • Chongqing, China, 404000
        • Chongqing Sanxia Central Hospital
      • Foshan, China, 510000
        • The First People's Hospital of Foshan
      • Fuzhou, China, 350014
        • Fujian Cancer Hospital
      • Fuzhou, China
        • Fujian Provincial Hospital
      • Guangdong Province Guangzhou City, China, 510515
        • Southern medical university Nanfang hospital
      • Hangzhou, China, 310022
        • Zhejiang Cancer Hospital
      • Harbin, China, 150081
        • Harbin Medical University Cancer Hospital
      • Hefei, China, 230601
        • The Second Affiliated Hospital of Anhui Medical University
      • Hefei, China, 12345
        • Anhui Province Cancer Hospital
      • Huai'an, China
        • Huai'an first people's hospital
      • Huai'an, China
        • The Second People's Hospital of Huai'an
      • Jining, China
        • Affiliated Hopsital of Jining Medical University
      • Lanzhou, China, 730000
        • Gansu Province People Hospital
      • Lianyungang, China, 222002
        • The First People's Hospital of Lian Yun Gang
      • Linyi, China, 276034
        • Linyishi Cancer Hospital
      • Luoyang, China, 471003
        • The First Affiliated Hospital to Henan University of Science and Technology
      • Nanjing, China, 211100
        • Jiangsu Cancer Hospital
      • Nanjing, China, 210029
        • Jiangsu Province Hospital of Chinese Medicine
      • Nantong, China, 226361
        • Nan Tong Tumor Hospital
      • Shanghai, China, 200000
        • Shanghai Chest Hospital
      • Shanghai, China, 200032
        • Zhongshan Hospital Fudan University
      • Shanghai, China, 200120
        • Fudan University Shanghai Cancer Center
      • Shantou, China, 515041
        • Cancer Hospital of Shantou University Medical College
      • Shengyang, China, 110042
        • Liaoning Provincial Cancer Hospital
      • Suining, China, 629000
        • Suining Central Hospital
      • Tianjin, China, 300060
        • Tianjin Cancer Hospital
      • Weifang, China
        • Weifang People's Hospital
      • Wuhan, China, 430079
        • Hubei Cancer Hospital
      • Wuhan, China, 430022
        • Wuhan Union Hospital Tongji Medical College, Huazhong University of Science and Technology
      • Wuxi, China, 214122
        • Affiliated Hospital of Jiangnan University(Wuxi Fourth People's Hospital )
      • Xi'an, China, 710061
        • First Affiliated Hospital of Medical College of Xi'an Jiaotong University
      • Xi'an, China, 710038
        • The Second Affiliated Hospital of The Fourth Military Medical University (Tangdu Hospital)
      • Xiamen, China, 361003
        • The First Affiliated Hospital of Xiamen University
      • Xiamen, China, 361004
        • Zhongshan Hospital Xiamen University
      • Xiangyang, China
        • Xiangyang Central Hospital
      • Xinxiang, China
        • The First Affiliated Hospital of Xinxiang Medical University
      • Xuzhou, China
        • Xuzhou Central Hospital
      • Yangzhou, China, 225001
        • Northern Jangsu People's Hospital
      • Zhengzhou, China, 450008
        • Henan Cancer Hospital
      • Zhengzhou, China, 450052
        • The First Affiliated Hospital of Zhengzhou University
  • Hong Kong
      • Hong Kong, Hong Kong
        • Queen Mary Hospital
      • Shatin, Hong Kong
        • Prince of Wales Hosp
  • South Korea
      • Daegu, South Korea, 41404
        • Kyungpook National University Chilgok Hospital
      • Goyang-si, South Korea, 10408
        • National Cancer Center
      • Seongnam-si, South Korea, 13605
        • Seoul National University Bundang Hospital
      • Seoul, South Korea, 05505
        • Asan Medical Center
      • Seoul, South Korea, 06351
        • Samsung Medical Center
      • Seoul, South Korea, 03722
        • Severance Hospital, Yonsei University Health System
      • Seoul, South Korea, 08308
        • Korea University Guro Hospital
  • Taiwan
      • Kaohisung, Taiwan
        • Chang Gung Medical Foundation - Kaohsiung
      • Tainan, Taiwan, 00704
        • National Cheng Kung University Hospital
      • Taipei, Taiwan, 112201
        • Taipei Veterans General Hospital
      • Zhongzheng Dist., Taiwan, 10048
        • National Taiwan University Hospital
  • Thailand
      • Bangkok, Thailand, 10700
        • Siriraj Hospital
      • Bangkok, Thailand, 10400
        • Rajavithi Hospital
      • Bangkok, Thailand, 10330
        • Chulalongkorn Hospital
      • Bangkok, Thailand, 10400
        • Ramathibodi Hospital
      • Songkhla, Thailand, 90110
        • Songklanagarind Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Key Inclusion Criteria:

  • Histologically confirmed EC
  • Unresectable locally advanced, unresectable recurrent, or metastatic disease
  • Measurable disease per Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1)
  • Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1
  • Adequate hematologic and end-organ function
  • Female participants must be willing to avoid pregnancy and refrain from donating eggs during the treatment period and for 90 days after the final dose
  • Male participants with partners of childbearing potential must commit to the use of two methods of contraception and must not donate sperm for the study duration and 90 days after the final dose

Key Exclusion Criteria:

  • Palliative radiation treatment for EC within 4 weeks prior to initiation of study treatment
  • Evidence of complete esophageal obstruction not amenable to treatment
  • Symptomatic, untreated, or actively progressing central nervous system (CNS) metastases
  • Uncontrolled tumor-related pain, uncontrolled pleural effusion, pericardial effusion, or ascites requiring recurrent drainage procedures
  • Active or history of autoimmune disease or immune deficiency or leptomeningeal disease
  • History of idiopathic pulmonary fibrosis, organizing pneumonia, drug-induced pneumonitis, or idiopathic pneumonitis, or evidence of active pneumonitis
  • Malignancies other than EC within 2 years prior to screening with a negligible risk of metastasis or death adequately treated with expected curative outcome
  • Severe infection within 4 weeks prior to initiation of study treatment or any active infection that, in the opinion of the investigator, could impact patient safety
  • Positive test result for human immunodeficiency virus (HIV)
  • Active hepatitis B or hepatitis C
  • Prior treatment with CD137 agonists or immune checkpoint blockade therapies, anti-CTLA-4, anti-TIGIT, anti-PD-1, and anti-PD-L1 therapeutic antibodies
  • Treatment with any investigational therapy prior to initiation of study treatment
  • Poor peripheral venous access
  • Prior allogeneic stem cell or solid organ transplantation
  • Concurrent participation in another therapeutic clinical trial

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Atezolizumab + Tiragolumab + PC
Participants will receive atezolizumab and tiragolumab on Day 1 of each 21-day cycle during the study followed by paclitaxel and cisplatin on Day 1 of each 21-day cycle until disease progression, loss of clinical benefit or unacceptable toxicity, during the induction treatment phase.
Drug: Atezolizumab
Atezolizumab at a fixed dose of 1200 milligrams (mg) administered by intravenous (IV) infusion every 3 weeks (Q3W) on Day 1 of each 21-day cycle.
Other Names:
  • Tecentriq
Drug: Tiragolumab
Tiragolumab at a fixed dose of 600 mg administered by IV infusion every Q3W on Day 1 of each 21-day cycle.
Other Names:
  • MTIG7192A
Drug: Paclitaxel
Paclitaxel 175 mg/m^2 administered by IV infusion on Day 1 of each 21-day cycle for 6 cycles.
Drug: Cisplatin
Cisplatin 60-80 mg/m^2 administered by IV infusion on Day 1 of each 21-day cycle for 6 cycles.
Placebo Comparator: Placebo + PC
Participants will receive atezolizumab matching placebo and tiragolumab matching placebo on Day 1 of each 21-day cycle during the study followed by paclitaxel and cisplatin on Day 1 of each 21-day cycle until disease progression, loss of clinical benefit or unacceptable toxicity, during the induction treatment phase.
Drug: Paclitaxel
Paclitaxel 175 mg/m^2 administered by IV infusion on Day 1 of each 21-day cycle for 6 cycles.
Drug: Cisplatin
Cisplatin 60-80 mg/m^2 administered by IV infusion on Day 1 of each 21-day cycle for 6 cycles.
Drug: Atezolizumab Matching Placebo
Atezolizumab matching placebo administered by IV infusion, Q3W on Day 1 of each 21-day cycle.
Drug: Tiragolumab Matching Placebo
Tiragolumab matching placebo administered by IV infusion, Q3W on Day 1 of each 21-day cycle.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Independent Review Facility (IRF)-Assessed Progression-free Survival (PFS)
Time Frame: From randomization to the first occurrence of PD or death from any cause, whichever occurred first (up to approximately 19 months)
PFS was defined as the time from randomization to the first occurrence of progressive disease (PD) or death from any cause (whichever occurred first), as determined by an IRF according to Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1). PD was defined as at least a 20% increase in the sum of diameters (SOD) of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 millimeters (mm) or unequivocal progression of existing non-target lesions. Kaplan-Meier (KM) method was used to estimate median PFS.
From randomization to the first occurrence of PD or death from any cause, whichever occurred first (up to approximately 19 months)
Overall Survival (OS)
Time Frame: From randomization to death from any cause (up to approximately 27.5 months)
OS was defined as the time from randomization to death from any cause. K-M method was used to estimate median OS.
From randomization to death from any cause (up to approximately 27.5 months)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Investigator-assessed PFS
Time Frame: From randomization to the first occurrence of PD or death from any cause, whichever occurs first (up to approximately 19 months)
PFS was defined as the time from randomization to the first occurrence of PD or death from any cause (whichever occurred first), as determined by the investigator according to RECIST v1.1. PD was defined at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. K-M method was used to estimate median PFS.
From randomization to the first occurrence of PD or death from any cause, whichever occurs first (up to approximately 19 months)
IRF-assessed Confirmed Objective Response Rate (ORR)
Time Frame: Up to approximately 19 months
IRF-assessed confirmed ORR was defined as the percentage of participants with an objective response (OR), characterized by a complete response (CR) or partial response (PR) on 2 consecutive occasions ≥ 4 weeks apart, as determined by an IRF according to RECIST v1.1. CR was defined as disappearance of all target lesions. & normalization of tumor marker level. Additionally, any pathological lymph nodes (whether target or non-target) must have a reduction in short axis to <10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR.
Up to approximately 19 months
Investigator-assessed Confirmed ORR
Time Frame: Up to approximately 19 months
Investigator-assessed confirmed ORR was defined as the percentage of participants with an OR, characterized by a CR or a PR on 2 consecutive occasions ≥ 4 weeks apart, as determined by the investigator according to RECIST v1.1. CR was defined as disappearance of all target lesions. & normalization of tumor marker level. Additionally, any pathological lymph nodes (whether target or non-target) must have a reduction in short axis to <10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR.
Up to approximately 19 months
IRF-assessed Duration of Objective Response (DOR)
Time Frame: From the first occurrence of a of a confirmed OR to PD or death from any cause, whichever occurred first (up to approximately 19 months)
DOR was defined as the time from the first occurrence of a confirmed OR to PD or death from any cause (whichever occurred first), as determined by an IRF according to RECIST v1.1. OR was defined as either a CR or a PR on 2 consecutive occasions ≥ 4 weeks apart. CR was defined as disappearance of all target lesions. & normalization of tumor marker level. Additionally, any pathological lymph nodes (whether target or non-target) must have a reduction in short axis to <10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD on study (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. K-M method was used to estimate median DOR.
From the first occurrence of a of a confirmed OR to PD or death from any cause, whichever occurred first (up to approximately 19 months)
Investigator-assessed DOR
Time Frame: From the first occurrence of a of a confirmed OR to PD or death from any cause, whichever occurred first (up to approximately 19 months)
DOR was defined as the time from the first occurrence of a confirmed OR to PD or death from any cause (whichever occurred first), as determined by an IRF according to RECIST v1.1. OR was defined as either a CR or a PR on 2 consecutive occasions ≥ 4 weeks apart. CR was defined as disappearance of all target lesions. & normalization of tumor marker level. Additionally, any pathological lymph nodes (whether target or non-target) must have a reduction in short axis to <10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD on study (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. K-M method was used to estimate median DOR.
From the first occurrence of a of a confirmed OR to PD or death from any cause, whichever occurred first (up to approximately 19 months)
Time to Confirmed Deterioration (TTCD) in Participant-reported Physical Functioning, as Measured by European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire - Core 30 (EORTC QLQ-C30)
Time Frame: Up to approximately 27 months
Clinically meaningful changes in physical functioning as measured by the EORTC QLQ-C30. EORTC QLQ-C30 is a self-reported measure, consisting of 30 questions that assess 5 aspects of participants functioning (physical, emotional, role, cognitive and social), 3 symptom scales (fatigue, nausea and vomiting, and pain), global health status/quality of life (GHS/QoL), and 6 single items (dyspnea, insomnia, appetite loss, constipation, diarrhea and financial difficulties) within the previous week. Physical functioning was scored on a 4-point scale: 1=Not at all, 2=A little, 3=Quite a bit, 4=Very much. Scores were linearly transformed to a range of 0 to 100, with higher scores (i.e. closer to 100) reflecting better functioning. Participants were considered "Worsened" if their baseline score decreased by ≥10 points. K-M method was used to estimate median TTCD.
Up to approximately 27 months
TTCD in Participant-reported Role Functioning (RF), as Measured by EORTC QLQ-C30
Time Frame: Up to approximately 27 months
Clinically meaningful changes in role functioning as measured by the EORTC QLQ-C30. EORTC QLQ-C30 is a self-reported measure, consisting of 30 questions that assess 5 aspects of participants functioning (physical, emotional, role, cognitive and social), 3 symptom scales (fatigue, nausea and vomiting, and pain), GHS/QoL, and 6 single items (dyspnea, insomnia, appetite loss, constipation, diarrhea and financial difficulties) within the previous week. Role functioning was scored on a 4-point scale: 1=Not at all, 2=A little, 3=Quite a bit, 4=Very much. Scores were linearly transformed to a range of 0 to 100, with higher scores (i.e. closer to 100) reflecting better functioning. Participants were considered "Worsened" if their baseline score decreased by ≥10 points. K-M method was used to estimate median TTCD.
Up to approximately 27 months
TTCD in Participant-Reported GHS/QoL, as Measured by EORTC QLQ-C30
Time Frame: Up to approximately 27 months
Clinically meaningful changes in GHS/QoL as measured by the EORTC QLQ-C30. EORTC QLQ-C30 is a self-reported measure, consisting of 30 questions that assess 5 aspects of participants functioning (physical, emotional, role, cognitive and social), 3 symptom scales (fatigue, nausea and vomiting, and pain), GHS/QoL, and 6 single items (dyspnea, insomnia, appetite loss, constipation, diarrhea and financial difficulties) within the previous week. GHS and QoL items were scored on a 7-point scale, with scores ranging from 1=Very poor to 7=Excellent. Scores were linearly transformed to a range of 0 to 100, with higher scores (i.e. closer to 100) reflecting better GHS/QoL. Participants were considered "Worsened" if their baseline score decreased by ≥10 points. K-M method was used to estimate median TTCD.
Up to approximately 27 months
TTCD in Participant-reported Dysphagia, as Measured by European Organisation for Research and Treatment of Cancer Quality-of-life Esophageal Cancer, Module 18 Questionnaire (EORTC QLQ-OES18)
Time Frame: Up to approximately 27 months
Clinically meaningful changes in dysphagia as measured by the EORTC QLQ-OES18. EORTC QLQ-OES18 is a modular supplement to the EORTC QLQ-C30 questionnaire for use in participants with esophageal cancer. EORTC QLQ-OES18 consists of 4 multiple-item scale (dysphagia, eating, reflux, and pain) and 6 single items (trouble swallowing saliva, choked when swallowing, dry mouth, trouble with taste, trouble with coughing, and trouble talking) with a recall period of the previous week. Each symptom item was scored on a 4-point scale: 1=Not at all, 2=A little, 3=Quite a bit, 4=Very much. Scores were linearly transformed to a range of 0 to 100, with higher transformed scores (i.e. closer to 100) reflecting worse symptoms. Participants were considered "Worsened" if their baseline score increased by ≥ 10 points. K-M method was used to estimate median TTCD.
Up to approximately 27 months
Number of Participants With Adverse Events (AEs)
Time Frame: Up to approximately 49.6 months
An AE was any untoward medical occurrence in a participant administered a pharmaceutical product, and which does not necessarily have a causal relationship with the treatment. An AE was therefore any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product.
Up to approximately 49.6 months
Number of Participants With Cytokine-release Syndrome (CRS), With Severity Determined by the American Society for Transplantation and Cell Therapy (ASTCT) Consensus Grading Scale
Time Frame: Up to approximately 49.6 months
CRS was defined as supraphysiologic response following administration of any immune therapy that results in activation/engagement of endogenous or infused T cells and/or other immune effector cells. Symptoms may be progressive, including fever at onset, and may also include hypotension, capillary leak (hypoxia), and end-organ dysfunction. Severity of CRS was determined per ASTCT Consensus Grading Criteria, which categorizes CRS into 5 grades: Grade 1: fever (≥38◦Celsius), with/without constitutional symptoms, in absence of hypotension & hypoxia; Grade 2: fever with hypotension not requiring vasopressors and/or hypoxia requiring low-flow oxygen; Grade 3: fever with hypotension requiring one vasopressor, with/without vasopressin, and/or hypoxia requiring high-flow oxygen; Grade 4: fever accompanied by hypotension requiring multiple vasopressors (excluding vasopressin) and/or hypoxia requiring positive-pressure ventilation; Grade 5: death due to CRS.
Up to approximately 49.6 months
Minimum Serum Concentration (Cmin) of Tiragolumab
Time Frame: Pre-dose on Day 1 of Cycles 2, 3, 4, 8, 12, and 16 (1 Cycle=21 days)
Pre-dose on Day 1 of Cycles 2, 3, 4, 8, 12, and 16 (1 Cycle=21 days)
Maximum Serum Concentration (Cmax) of Tiragolumab
Time Frame: 30 minutes post-dose on Day 1 of Cycle 1 (1 Cycle=21 days)
30 minutes post-dose on Day 1 of Cycle 1 (1 Cycle=21 days)
Cmin of Atezolizumab
Time Frame: Pre-dose on Day 1 of Cycles 2, 3, 4, 8, 12, and 16 (1 Cycle=21 days)
Pre-dose on Day 1 of Cycles 2, 3, 4, 8, 12, and 16 (1 Cycle=21 days)
Cmax of Atezolizumab
Time Frame: 30 minutes post-dose on Day 1 of Cycle 1 (1 Cycle=21 days)
30 minutes post-dose on Day 1 of Cycle 1 (1 Cycle=21 days)
Number of Participants With Anti-drug Antibodies (ADAs) to Tiragolumab
Time Frame: Up to approximately 27.5 months
Participants were considered to be ADA positive if they were ADA negative at baseline but developed an ADA response following tiragolumab administration (treatment-induced ADA response), or if they were ADA positive at baseline and the titer of one or more post-baseline samples was greater than the titer of the baseline sample by a scientifically reasonable margin such as at least 0.60 titer unit (t.u.) greater than the baseline titer result (treatment-enhanced ADA response). Participants with a positive post-baseline sample have been reported here.
Up to approximately 27.5 months
Number of Participants With ADAs to Atezolizumab
Time Frame: Up to approximately 27.5 months
Participants were considered to be ADA positive if they were ADA negative at baseline but developed an ADA response following atezolizumab administration (treatment-induced ADA response), or if they were ADA positive at baseline and the titer of one or more post-baseline samples was greater than the titer of the baseline sample by a scientifically reasonable margin such as at least 0.60 t.u. greater than the baseline titer result (treatment-enhanced ADA response). Participants with a positive post-baseline sample have been reported here.
Up to approximately 27.5 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Hoffmann-La Roche

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Clinical Trials, Hoffmann-La Roche

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 30, 2020

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
February 13, 2023

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
August 28, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 3, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 3, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 7, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 27, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 4, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • YO42138

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

For eligible studies, qualified researchers may request access to individual patient level clinical data. See Roche's commitment to transparency of clinical study information here: https://go.roche.com/data_sharing

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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