A Phase 2 interventional study of Casdozokitug and Atezolizumab in Hepatocellular Carcinoma, sponsored by Coherus Oncology, Inc.. Terminated at 37 sites in 4 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-01.
Sponsored by Coherus Oncology, Inc. · Phase 2, Interventional, and Treatment
Sponsor decision
This was a Phase 2 trial composed of an open label Lead-In followed by a planned Randomized Phase designed to evaluate the efficacy and safety of SRF388 in combination with atezolizumab plus bevacizumab compared to placebo (inactive substance) in combination with atezolizumab plus bevacizumab in patients with first-line advanced or metastatic HCC.
Only the Lead-In Phase of the study was completed.
This is a Phase 2 trial designed to evaluate the efficacy and safety of SRF388 in combination with atezolizumab plus bevacizumab (Arm A) compared to placebo in combination with atezolizumab plus bevacizumab (Arm B) in patients with first-line advanced or metastatic HCC.
After a Lead-In Phase of up to 30 patients who will receive open-label SRF388 + atezolizumab + bevacizumab, the blinded Randomized Phase will randomize approximately 104 patients with a 1:1 allocation to Arm A or Arm B and stratified by geographic region (Asia excluding Japan vs. rest of world) and Barcelona Clinic Liver Cancer (BCLC) stage (B or C).
3,182 studies on the registry are indexed under Carcinoma, Hepatocellular; 954 are open to participants now.
This study's enrollment of 30 is below the median of 55 across 2,298 interventional studies indexed under Carcinoma, Hepatocellular.
Browse Carcinoma, Hepatocellular studies →Coherus Oncology, Inc. is the lead sponsor of 6 studies on the registry; 2 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Abbreviated Inclusion Criteria:
Abbreviated Exclusion Criteria:
A minimum of 6 patients and up to 30 patients will be enrolled in an open-label Lead-In to assess the preliminary safety and tolerability of SRF388 with atezolizumab plus bevacizumab.
Drug: Casdozokitug · Drug: Atezolizumab · Drug: Bevacizumab
Patients randomized to Arm A will receive SRF388 with atezolizumab plus bevacizumab.
Drug: Casdozokitug · Drug: Atezolizumab · Drug: Bevacizumab
Patients randomized to Arm B will receive placebo with atezolizumab plus bevacizumab.
Drug: Atezolizumab · Drug: Bevacizumab · Drug: Placebo
Casdozokitug will be administered by intravenous injection (IV)
Also known as: CHS-388, SRF388
Atezolizumab will be administered by IV
Also known as: Tecentriq
Bevacizumab will be administered by IV
Also known as: Avastin
Placebo will be administered by IV
Number of Participants With Treatment-emergent Adverse Events (TEAEs)
A TEAE was defined as an AE that emerged or worsened in the period from the first dose of study drug to 30 days after the last dose of study drug. A summary of other non-serious AEs and all serious AEs, regardless of causality, is located in the Reported AE section.
Time frame: Up to approximately 37 months
Progression Free Survival (PFS) According to Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1)
PFS was defined as the time from the date of randomization to the first documented evidence of disease progression as assessed according to RECIST v1.1 or death due to any cause, whichever occured first. Disease progression was defined according to RECIST v1.1 criteria, including at least a 20% increase in the sum of diameters of target lesions relative to the smallest sum recorded during the study, with an absolute increase in the sum of diameters of at least 5 millimeters (mm), or the appearance of one or more new lesions.
Time frame: Up to approximately 38 months
PFS According to Hepatocellular Carcinoma Modified RECIST (HCC mRECIST) (mPFS)
mPFS was defined as the time from the date of randomization to the first documented evidence of disease progression as assessed according to HCC mRECIST or death due to any cause, whichever occured first. Disease progression was defined per HCC mRECIST criteria, including at least a 20% increase in the sum of diameters of target lesions (including viable tumor diameters for typical intrahepatic target lesions and short axis diameters for nodal lesions) relative to the smallest sum recorded during the study, with an absolute increase in the sum of diameters of at least 5 mm.
Time frame: Up to approximately 38 months
Objective Response Rate (ORR) According to RECIST v1.1
ORR was defined as the percentage of participants achieving complete response (CR) and partial response (PR) per RECIST v1.1. * CR: Disappearance of all extranodal target lesions. All pathological lymph nodes must have decreased to \< 10 mm in short axis. * PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters.
Time frame: Up to approximately 38 months
ORR According to HCC mRECIST (mORR)
mORR was defined as the percentage of participants achieving complete response CR and PR per HCC mRECIST. * CR: Disappearance of any intratumoral arterial enhancement in all target lesions.. All pathological lymph nodes must have decreased to \< 10 mm in short axis. * PR: At least a 30% decrease in the sum of the diameters of viable (enhancement in the arterial phase) target lesions. target lesions, taking as reference the baseline sum diameters.
Time frame: Up to approximately 38 months
Duration of Response (DoR) According to RECIST 1.1
DoR was defined as the time from first documentation of CR or PR until the time of the first documentation of PD evaluated using RECIST v1.1 or death due to any cause.
Time frame: Up to approximately 38 months
DoR According to HCC mRECIST (mDoR)
mDoR was defined as the time from first documentation of CR or PR until the time of the first documentation of PD evaluated using HCC mRECIST or death due to any cause.
Time frame: Up to approximately 38 months
Disease Control Rate (DCR) According to RECIST v1.1
DCR was defined as the percentage of participants who achieved CR, PR, or SD according to RECIST v1.1 for at least 12 weeks.
Time frame: Up to approximately 38 months
DCR According to HCC mRECIST (mDCR)
mDCR was defined as the percentage of participants who achieved CR, PR, or SD according to HCC mRECIST for at least 12 weeks.
Time frame: Up to approximately 38 months
Time to Progression (TTP) According to RECIST v1.1
TTP was defined as time from study drug initiation to the occurrence of disease progression per RECIST v1.1.
Time frame: Up to approximately 38 months
TTP According to HCC mRECIST (mTTP)
mTTP was defined as time from study drug initiation to the occurrence of disease progression per HCC mRECIST.
Time frame: Up to approximately 38 months
Overall Survival (OS)
OS was defined as the time from study drug initiation to death from any cause.
Time frame: Up to approximately 38 months
Time to Response (TTR) According to RECIST v1.1
TTR was defined as the time from study drug initiation to initial documented objective response per RECIST v1.1.
Time frame: Up to approximately 38 months
TTR According to HCC mRECIST (mTTR)
mTTR was defined as the time from study drug initiation to initial documented objective response per HCC mRECIST.
Time frame: Up to approximately 38 months
Time on Therapy
Time on therapy was defined as the time from study drug initiation to last treatment.
Time frame: Up to approximately 38 months
Mean Serum Epstein-Barr Virus Induced Gene 3 (EBI3) Concentration by Best Overall Response (BOR) According to RECIST v1.1
Baseline Serum EBI3 was collected and is reported by BOR status per RECIST v1.1. * CR: Disappearance of all target lesions. Any pathological lymph nodes must have reduction in the short axis to \<10 mm. * PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters. * PD: At least a 20% increase in the sum of the diameters of target lesions, taking as reference the smallest sum on study (this includes the baseline sum if that is the smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. (Note: The appearance of 1 or more new lesions is also considered progression.) * Stable disease (SD): Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum diameters while on study.
Time frame: Baseline up to approximately 38 months
PFS According to RECIST v1.1 by Baseline Serum EBI3 Status
PFS was defined as the time from the date of randomization to the first documented evidence of disease progression as assessed according to RECIST v1.1 or death due to any cause, whichever occured first. Disease progression was defined according to RECIST v1.1 criteria, including at least a 20% increase in the sum of diameters of target lesions relative to the smallest sum recorded during the study, with an absolute increase in the sum of diameters of at least 5 millimeters (mm), or the appearance of one or more new lesions.
Time frame: Up to approximately 38 months
TTP According to RECIST v1.1 by Baseline Serum EBI3 Status
TTP was defined as time from study drug initiation to the occurrence of disease progression per RECIST v1.1.
Time frame: Up to approximately 38 months
OS by Baseline Serum EBI3 Status
OS was defined as the time from study drug initiation to death from any cause.
Time frame: Up to approximately 38 months
| Milestone | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| Started | 30 |
| Received at least 1 dose of study treatment | 30 |
| Completed | 2 |
| Not completed | 28 |
| Withdrew: Adverse event | 1 |
| Withdrew: Death | 13 |
| Withdrew: Withdrawal by subject | 5 |
| Withdrew: Study terminated by sponsor | 9 |
A TEAE was defined as an AE that emerged or worsened in the period from the first dose of study drug to 30 days after the last dose of study drug. A summary of other non-serious AEs and all serious AEs, regardless of causality, is located in the Reported AE section.
| Participants | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| Number of Participants With Treatment-emergent Adverse Events (TEAEs) | 30 |
PFS was defined as the time from the date of randomization to the first documented evidence of disease progression as assessed according to RECIST v1.1 or death due to any cause, whichever occured first. Disease progression was defined according to RECIST v1.1 criteria, including at least a 20% increase in the sum of diameters of target lesions relative to the smallest sum recorded during the study, with an absolute increase in the sum of diameters of at least 5 millimeters (mm), or the appearance of one or more new lesions.
| months | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| Progression Free Survival (PFS) According to Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1) | 8.3 (2.0 to 14.5) |
mPFS was defined as the time from the date of randomization to the first documented evidence of disease progression as assessed according to HCC mRECIST or death due to any cause, whichever occured first. Disease progression was defined per HCC mRECIST criteria, including at least a 20% increase in the sum of diameters of target lesions (including viable tumor diameters for typical intrahepatic target lesions and short axis diameters for nodal lesions) relative to the smallest sum recorded during the study, with an absolute increase in the sum of diameters of at least 5 mm.
| months | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| PFS According to Hepatocellular Carcinoma Modified RECIST (HCC mRECIST) (mPFS) | 10.3 (2.0 to 20.0) |
ORR was defined as the percentage of participants achieving complete response (CR) and partial response (PR) per RECIST v1.1. * CR: Disappearance of all extranodal target lesions. All pathological lymph nodes must have decreased to \< 10 mm in short axis. * PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters.
| percentage of participants | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| Objective Response Rate (ORR) According to RECIST v1.1 | 39.3 (21.5 to 59.4) |
mORR was defined as the percentage of participants achieving complete response CR and PR per HCC mRECIST. * CR: Disappearance of any intratumoral arterial enhancement in all target lesions.. All pathological lymph nodes must have decreased to \< 10 mm in short axis. * PR: At least a 30% decrease in the sum of the diameters of viable (enhancement in the arterial phase) target lesions. target lesions, taking as reference the baseline sum diameters.
| percentage of participants | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| ORR According to HCC mRECIST (mORR) | 44.4 (25.5 to 64.7) |
DoR was defined as the time from first documentation of CR or PR until the time of the first documentation of PD evaluated using RECIST v1.1 or death due to any cause.
| months | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| Duration of Response (DoR) According to RECIST 1.1 | NA (12.7 to NA) |
mDoR was defined as the time from first documentation of CR or PR until the time of the first documentation of PD evaluated using HCC mRECIST or death due to any cause.
| months | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| DoR According to HCC mRECIST (mDoR) | NA (12.7 to NA) |
DCR was defined as the percentage of participants who achieved CR, PR, or SD according to RECIST v1.1 for at least 12 weeks.
| percentage of participants | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| Disease Control Rate (DCR) According to RECIST v1.1 | 60.7 (40.6 to 78.5) |
mDCR was defined as the percentage of participants who achieved CR, PR, or SD according to HCC mRECIST for at least 12 weeks.
| percentage of participants | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| DCR According to HCC mRECIST (mDCR) | 63.0 (42.4 to 80.6) |
TTP was defined as time from study drug initiation to the occurrence of disease progression per RECIST v1.1.
| months | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| Time to Progression (TTP) According to RECIST v1.1 | 8.1 (2.0 to 13.6) |
mTTP was defined as time from study drug initiation to the occurrence of disease progression per HCC mRECIST.
| months | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| TTP According to HCC mRECIST (mTTP) | 8.4 (2.0 to 24.6) |
OS was defined as the time from study drug initiation to death from any cause.
| months | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| Overall Survival (OS) | NA (14.5 to NA) |
TTR was defined as the time from study drug initiation to initial documented objective response per RECIST v1.1.
| months | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| Time to Response (TTR) According to RECIST v1.1 | 3.28 ± 1.433 |
mTTR was defined as the time from study drug initiation to initial documented objective response per HCC mRECIST.
| months | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| TTR According to HCC mRECIST (mTTR) | 2.90 ± 1.457 |
Time on therapy was defined as the time from study drug initiation to last treatment.
| weeks | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| Time on Therapy | 46.7 ± 43.34 |
Baseline Serum EBI3 was collected and is reported by BOR status per RECIST v1.1. * CR: Disappearance of all target lesions. Any pathological lymph nodes must have reduction in the short axis to \<10 mm. * PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters. * PD: At least a 20% increase in the sum of the diameters of target lesions, taking as reference the smallest sum on study (this includes the baseline sum if that is the smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. (Note: The appearance of 1 or more new lesions is also considered progression.) * Stable disease (SD): Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum diameters while on study.
| ng/mL | Casdozokitug + Atezolizumab + Bevacizumab: Participants With CR | Casdozokitug + Atezolizumab + Bevacizumab: Participants With PR | Casdozokitug + Atezolizumab + Bevacizumab: Participants With SD | Casdozokitug + Atezolizumab + Bevacizumab: Participants With PD | Casdozokitug + Atezolizumab + Bevacizumab: Participants With BOR Not Evaluable |
|---|---|---|---|---|---|
| Mean Serum Epstein-Barr Virus Induced Gene 3 (EBI3) Concentration by Best Overall Response (BOR) According to RECIST v1.1 | 2.117 ± 1.4513 | 2.347 ± 1.0920 | 1.572 ± 1.0121 | 2.194 ± 1.1775 | 3.203 ± 2.9529 |
PFS was defined as the time from the date of randomization to the first documented evidence of disease progression as assessed according to RECIST v1.1 or death due to any cause, whichever occured first. Disease progression was defined according to RECIST v1.1 criteria, including at least a 20% increase in the sum of diameters of target lesions relative to the smallest sum recorded during the study, with an absolute increase in the sum of diameters of at least 5 millimeters (mm), or the appearance of one or more new lesions.
| months | Casdozokitug + Atezolizumab + Bevacizumab: Participants With <= Median Baseline EBI3 Concentration | Casdozokitug + Atezolizumab + Bevacizumab: Participants With > Median Baseline EBI3 Concentration |
|---|---|---|
| PFS According to RECIST v1.1 by Baseline Serum EBI3 Status | 8.1 (1.9 to 24.6) | 8.4 (1.9 to 20.0) |
TTP was defined as time from study drug initiation to the occurrence of disease progression per RECIST v1.1.
| months | Casdozokitug + Atezolizumab + Bevacizumab: Participants With <= Median Baseline EBI3 Concentration | Casdozokitug + Atezolizumab + Bevacizumab: Participants With > Median Baseline EBI3 Concentration |
|---|---|---|
| TTP According to RECIST v1.1 by Baseline Serum EBI3 Status | 8.1 (1.9 to 24.6) | 8.4 (1.9 to NA) |
OS was defined as the time from study drug initiation to death from any cause.
| months | Casdozokitug + Atezolizumab + Bevacizumab: Participants With <= Median Baseline EBI3 Concentration | Casdozokitug + Atezolizumab + Bevacizumab: Participants With > Median Baseline EBI3 Concentration |
|---|---|---|
| OS by Baseline Serum EBI3 Status | NA (9.5 to NA) | 19.9 (14.0 to NA) |
Collected over Up to approximately 39 months. Non-serious events are listed at a 0% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Casdozokitug + Atezolizumab + Bevacizumab | 13/30 (43.3%) | 15/30 (50%) | 30/30 (100%) |
| Event | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| SepsisInfections and infestations | 2/30 |
| ColitisGastrointestinal disorders | 2/30 |
| Disease progressionGeneral disorders | 2/30 |
| Anorectal infectionInfections and infestations | 1/30 |
| CellulitisInfections and infestations | 1/30 |
| Escherichia bacteraemiaInfections and infestations | 1/30 |
| PeritonitisInfections and infestations | 1/30 |
| PneumoniaInfections and infestations | 1/30 |
| Pneumonia aspirationInfections and infestations | 1/30 |
| Duodenal perforationGastrointestinal disorders | 1/30 |
| Event | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| ProteinuriaRenal and urinary disorders | 13/30 |
| Decreased appetiteMetabolism and nutrition disorders | 12/30 |
| DiarrhoeaGastrointestinal disorders | 11/30 |
| FatigueGeneral disorders | 10/30 |
| HypertensionVascular disorders | 10/30 |
| RashSkin and subcutaneous tissue disorders | 9/30 |
| PyrexiaGeneral disorders | 7/30 |
| Platelet count decreasedInvestigations | 7/30 |
| PruritusSkin and subcutaneous tissue disorders | 7/30 |
| HeadacheNervous system disorders | 7/30 |
The Safety Analysis Set included all participants who received any amount of study drug.
| Age, Continuous(years) | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| Mean | 65.0 ± 12.79 |
| Sex: Female, Male(Participants) | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| Female | 7 |
| Male | 23 |
| Ethnicity (NIH/OMB)(Participants) | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| Hispanic or Latino | 3 |
| Not Hispanic or Latino | 26 |
| Unknown or Not Reported | 1 |
| Race (NIH/OMB)(Participants) | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| American Indian or Alaska Native | 0 |
| Asian | 20 |
| Native Hawaiian or Other Pacific Islander | 1 |
| Black or African American | 0 |
| White | 7 |
| More than one race | 0 |
| Unknown or Not Reported | 2 |
| Serum Epstein-Barr Virus Induced Gene 3 Concentration(nanograms per milliliter (ng/mL)) | Casdozokitug + Atezolizumab + Bevacizumab |
|---|---|
| Median | 1.865 (0.32 to 5.29) |
Documents are hosted by the registry — open the source record to download them.
Plan to share: No
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From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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Coherus Oncology, Inc.