CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 123 enrolled
Drug / intervention
Atezolizumab +2 moredrug
Likely dose
Atezolizumab 1200 mgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04665843
NCT04665843Phase 2Completed

A Phase II, Randomized, Double Blind Study of Atezolizumab Plus Tiragolumab and Atezolizumab Plus Placebo as First-Line Treatment in Patients With Recurrent/Metastatic PD-L1 Positive Squamous Cell Carcinoma of the Head and Neck

Hoffmann-La Roche·interventional·Posted Dec 14, 2020·Updated May 5, 2026

In Brief

A Phase 2 clinical trial evaluating Atezolizumab, Tiragolumab, and 1 other intervention for Squamous Cell Carcinoma of Head and Neck. Completed, enrolled 123 participants across 47 sites in 13 countries.

Detailed Summary

The primary objective of this study is to evaluate the efficacy of atezolizumab plus tiragolumab and atezolizumab plus placebo as first-line (1L) treatment in recurrent/metastatic PD-L1-positive squamous cell carcinoma of the head and neck (SCCHN) on the basis of confirmed objective response rate. In addition, safety, pharmacokinetics, immunogenicity of atezolizumab and tiragolumab will be evaluated.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesCzechia, France, Greece, Hungary, Italy, New Zealand, Poland, South Korea, Spain, Taiwan, Thailand, United Kingdom, United States
Collaborators--

Timeline

Phase 2CompletedFinished
202120222023202420252026
First PostedDec 14, 2020
Enrollment StartMar 2, 2021
Primary CompletionSep 20, 2023
Study CompletionAug 27, 2025
TodayJul 2, 2026
Enrollment to primary: 2.6 yearsPosted 5.5 years ago

Interventions

Atezolizumabdrug

Atezolizumab at a fixed dose of 1200 mg will be administered by intravenous (IV) infusion Q3W on Day 1 of each 21-day cycle.

Tiragolumabdrug

Tiragolumab at a fixed dose of 600 mg will be administered by IV infusion Q3W on Day 1 of each 21-day cycle.

Placebodrug

Placebo will be administered by IV infusion Q3W on Day 1 of each 21-day cycle.