Recent Updates
Recently added Catalysts

CHS-388

Phase 1

Advanced Solid Tumor | Small molecule | Oncology |Coherus Oncology, Inc.|Last Updated: Jul 15, 2026

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

CONTROLLED
Total Trials1
Total Enrollment145

FDA Designations

No designations recorded

Clinical trial landscape

CHS-388 · 1 trial · 4 indications

Phase 1 1
NCT04374877Study of CHS-388 (Formerly Known as SRF388) in Patients With Advanced Solid TumorsAdvanced Solid Tumor
COMPLETED145 Analytics
PHASE1COMPLETED
Study of CHS-388 (Formerly Known as SRF388) in Patients With Advanced Solid Tumors
Advanced Solid TumorUnlock trial analytics

Study Endpoints

Primary Endpoints

[Part A] Dose Limiting Toxicity (DLT)
Assessed during first 28 days of treatment

Evaluation of DLT of CHS-388 as a monotherapy.

[Part B] Confirmed objective response rate (ORR)
Up to 24 months

ORR will be estimated by the percentage of patients achieving a best overall response of CR or PR per RECIST v1.1 and iRECIST.

[Part C] DLT
Assessed during first 21 days of treatment

Evaluation of DLT of CHS-388 in combination with pembrolizumab.

[Part C] Summary of adverse events (AEs) based on treatment emergent AEs (TEAEs)
Up to 24 months

Safety and tolerability of CHS-388 + pembrolizumab will be assessed by summarizing AEs and will be based on TEAEs. A TEAE is an AE that emerges or worsens in the period from the first dose of study treatment to 30 days after the last dose of study drug assessed by per CTCAE version 5.0 or higher.

[Part C -NSCLC Cohort] Objective response rate (ORR)
Up to 24 months

ORR will be estimated by the percentage of patients achieving a best overall response of CR or PR per RECIST v1.1 and iRECIST.

[Part D] Objective response rate (ORR)
Up to 24 months

CR or PR per RECIST v1.1

Secondary Endpoints

[Part A, Part B] Safety Analysis: Summary of adverse events (AEs) and based on treatment-emergent AEs (TEAEs)
Up to 24 months
[Part A, Part B, Part C] Pharmacokinetics (PK) of CHS-388
Up to 24 months
[Part D] Pharmacokinetics (PK) of CHS-388 and toripalimab
Up to 24 months
Unlock Study Endpoints

Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Part A Monotherapy Dose EscalationEXPERIMENTALThe Part A monotherapy dose escalation portion of the study will evaluate the safety, tolerability, PK, pharmacodynamics, and preliminary efficacy of CHS-388 as monotherapy in up to 30 patients with advanced solid tumors.
Part B CHS-388 Monotherapy ExpansionEXPERIMENTALPart B monotherapy expansion will evaluate the safety, tolerability, PK, pharmacodynamics, and efficacy of CHS-388 monotherapy at the recommended phase 2 dose (RP2D) in up to 40 patients with ccRCC, up to 40 patients with HCC, and up to 40 patients with NSCLC.
Part C CHS-388 in Combination with PembrolizumabEXPERIMENTALPart C will evaluate the safety, preliminary efficacy, tolerability, and PK of CHS-388 in combination with pembrolizumab in patients with advanced RCC or HCC, or anti-PD(L)1 relapsed/refractory advanced NSCLC.
Part D CHS-388 in Combination with ToripalimabEXPERIMENTALPart D will evaluate the safety, preliminary efficacy, tolerability, and PK of CHS-388 in combination with toripalimab in patients with anti-PD(L)1 relapsed/refractory advanced NSCLC.

Interventions

NameTypeDescription
CHS-388DRUGCHS-388 is a fully human IgG1 antibody against IL-27. Inhibition of IL-27 with CHS-388 reduces STAT1 phosphorylation leading to increased pro-inflammatory (anti-tumor) cytokine secretion (e.g., IFN-g, TNF-a) and decreased expression of inhibitory immune checkpoint receptors (e.g., PD-L1, TIGIT, LAG3) on immune cells that may result in anticancer therapeutic activity.
PembrolizumabDRUGPembrolizumab by intravenous (IV) infusion
ToripalimabDRUGToripalimab by IV infusion
Unlock Study Design Details

Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites23

Part A and Part B Abbreviated Inclusion Criteria: * ≥ 18 years of age * Locally advanced or metastatic (Stage IV) solid tumor that has progressed during or after standard therapy, and for whom no available therapies are appropriate (based on investigator judgment) * Patients in Part B with advanced...

Countries:United StatesSingaporeSouth Korea
Unlock Eligibility Criteria

Competitive Landscape -Other Solid Tumors 9 trials (matched to "Advanced Solid Tumor")

Recent Changes (Last 90 Days)

MEDIUMAug 15, 2026NCT04374877TRIAL_REMOVED: changed
MEDIUMAug 15, 2026NCT04374877TRIAL_REMOVED: changed
MEDIUMAug 15, 2026NCT04374877TRIAL_REMOVED: changed

Frequently asked questions about CHS-388

What is CHS-388 used for?

CHS-388 is an investigational small molecule being studied for the treatment of advanced solid tumors, including clear cell renal cell carcinoma, hepatocellular carcinoma, and non-small cell lung cancer. It is currently in Phase 1 clinical development and has not been approved by the FDA.

Who makes CHS-388?

CHS-388 is being developed by Coherus Oncology, Inc., a subsidiary of Coherus BioSciences, Inc. (NASDAQ: CHRS). The company is conducting clinical trials to evaluate the drug's safety and efficacy in patients with advanced solid tumors.

What phase is CHS-388 in?

CHS-388 is in Phase 1 clinical development. A Phase 1 study of the drug has been completed, involving 145 patients with advanced solid tumors. The drug is investigational and has not received FDA approval.

What clinical trials is CHS-388 in?

CHS-388 has been studied in a completed Phase 1 clinical trial with the identifier NCT04374877. This trial enrolled 145 patients with advanced solid tumors, including clear cell renal cell carcinoma, hepatocellular carcinoma, and non-small cell lung cancer, across the United States, Singapore, and South Korea.

Is CHS-388 the same as SRF388?

Yes, CHS-388 was formerly known as SRF388. The clinical trial NCT04374877, titled 'Study of CHS-388 (Formerly Known as SRF388) in Patients With Advanced Solid Tumors,' confirms that these names refer to the same investigational drug.