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Concurrent Atezolizumab

Phase 1

Head and Neck Neoplasm | Monoclonal antibody | Oncology |Roche Holding AG|Last Updated: Sep 21, 2026

Development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Jul 2020

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment18

FDA Designations

No designations recorded

Clinical trial landscape

Concurrent Atezolizumab · 1 trial · 1 indication

Phase 1 1
NCT04477759Dose-Escalated Hypofractionated Adaptive Radiotherapy for Head and Neck CancerHead and Neck Neoplasm
COMPLETED18 Analytics
PHASE1COMPLETED
Dose-Escalated Hypofractionated Adaptive Radiotherapy for Head and Neck Cancer
Head and Neck NeoplasmUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence of Dose-Limiting Toxicities at 50 Gy With Concurrent Atezolizumab
12 months

This measure is the number of subjects experiencing a dose-limiting toxicity. A dose-limiting toxicity is defined as an inability to complete radiation treatment within 30 days of the start of radiotherapy that is not deemed to be related to disease progression; OR an unacceptable toxicity within one year of treatment (Grade 4+ toxicity) that is probably or definitely related to radiation treatment as determined by the treating physician or a death within one year of treatment that is probably or definitely related to treatment.

Incidence of Dose-Limiting Toxicities at 50 Gy
12 months

This measure is the number of subjects experiencing a dose-limiting toxicity. A dose-limiting toxicity is defined as an inability to complete radiation treatment within 30 days of the start of radiotherapy that is not deemed to be related to disease progression; OR an unacceptable toxicity within one year of treatment (Grade 4+ toxicity) that is probably or definitely related to radiation treatment as determined by the treating physician or a death within one year of treatment that is probably or definitely related to treatment.

Incidence of Dose-Limiting Toxicities at 55 Gy
12 months

This measure is the number of subjects experiencing a dose-limiting toxicity. A dose-limiting toxicity is defined as an inability to complete radiation treatment within 30 days of the start of radiotherapy that is not deemed to be related to disease progression; OR an unacceptable toxicity within one year of treatment (Grade 4+ toxicity) that is probably or definitely related to radiation treatment as determined by the treating physician or a death within one year of treatment that is probably or definitely related to treatment.

Incidence of Dose-Limiting Toxicities at 60 Gy
12 months

This measure is the number of subjects experiencing a dose-limiting toxicity. A dose-limiting toxicity is defined as an inability to complete radiation treatment within 30 days of the start of radiotherapy that is not deemed to be related to disease progression; OR an unacceptable toxicity within one year of treatment (Grade 4+ toxicity) that is probably or definitely related to radiation treatment as determined by the treating physician or a death within one year of treatment that is probably or definitely related to treatment.

Maximum Tolerated Radiation Dose
12 months

This measure is the highest radiation dose at which there is a 30% or more rate of dose-limiting toxicity up to 12 months after completion of radiation treatment using the TITE-CRM design.

Secondary Endpoints

Overall Survival
1 year
Locoregional Progression
1 year
Percent Change in Gross Tumor Volume From Baseline at Radiation Fraction 6
6th Radiation Fraction (approximately 1 week)
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
50 Gray (Gy) Radiation Therapy with Concurrent AtezolizumabEXPERIMENTAL50 Gy of ionizing radiation therapy will be administered in 15 fractions.
50 Gray (Gy) Radiation TherapyEXPERIMENTAL50 Gy of ionizing radiation therapy will be administered in 15 fractions.
55 Gray (Gy) Radiation TherapyEXPERIMENTAL55 Gy of ionizing radiation therapy will be administered in 15 fractions.
60 Gray (Gy) Radiation TherapyEXPERIMENTAL60 Gy of ionizing radiation therapy will be administered in 15 fractions.

Interventions

NameTypeDescription
50 Gy Radiation TherapyRADIATIONIonizing radiation
55 Gy Radiation TherapyRADIATIONIonizing radiation
60 Gy Radiation TherapyRADIATIONIonizing radiation
Concurrent AtezolizumabDRUGAtezolizumab (1,680 mg) will be given to all subjects by intravenous injection every 4 weeks following the initiation of radiation treatment up to 1 year from radiation fraction 1.
Adjuvant AtezolizumabDRUGAtezolizumab (1,680 mg) will be given to all subjects by intravenous injection every 28 days following the initiation of radiation treatment up to 1 year.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: * Age ≥18 years * Diagnosis of T3-T4 N0-N3 M0 or T0-T4 N1-N3 M0 squamous cell carcinoma of the head and neck squamous cell carcinoma of the larynx, hypopharynx, oropharynx, oral cavity, or carcinoma of unknown head/neck primary) based on American Joint Committee on Cancer guidel...

Countries:United States
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