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CS-121

Phase 1

Severe Hypertriglyceridemia (sHTG) | Monoclonal antibody | Metabolic |cbdMD, Inc.|Last Updated: Jun 18, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment15

FDA Designations

No designations recorded

Clinical trial landscape

CS-121 · 1 trial · 1 indication

Early Phase 1 1
NCT07657780CS-121 APOC3 Base Editing in Severe HypertriglyceridemiaSevere Hypertriglyceridemia (sHTG)
NOT YET_RECRUITING15 Analytics
EARLY_PHASE1NOT YET_RECRUITING
CS-121 APOC3 Base Editing in Severe Hypertriglyceridemia
Severe Hypertriglyceridemia (sHTG)Unlock trial analytics

Study Endpoints

Primary Endpoints

Treatment-Emergent Adverse Events (TEAEs)
From screening to 12 months post last dosing
Dose-Limiting Toxicities (DLTs)
Within 14 days after CS-121 infusion

Secondary Endpoints

Change from Baseline in Fasting Serum Triglycerides (TG)
Baseline through approximately 12 months post dosing
Change from Baseline in Serum ApoC3 Protein Levels
From baseline to 12 months post last dosing
Concentrations of the active components of CS-121 (sgRNA and mRNA)
From baseline to 1 month post last dosing
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Single Low Dose CS-121EXPERIMENTALParticipants in this arm will receive a single low dose (0.5mg/kg) of CS-121.
Single Middle Dose CS-121EXPERIMENTALParticipants in this arm will receive a single middle dose (0.7mg/kg) of CS-121.
Single High Dose CS-121EXPERIMENTALParticipants in this arm will receive a single high dose (1.0mg/kg) of CS-121
Single selected Lower Dose 1 of CS-121EXPERIMENTALParticipants in this arm will receive a single selected lower dose 1 of CS-121.
Single selected Lower Dose 2 of CS-121EXPERIMENTALParticipants in this arm will receive a single selected lower dose 2 of CS-121

Interventions

NameTypeDescription
CS-121BIOLOGICALCS-121 is a in vivo base editing therapy formulated in lipid nanoparticles for targeted editing of the APOC3 gene in hepatocytes.
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Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: * Male or female participants aged 18 years ≤ age \< 65 years. * The serum triglyceride levels of the participants failed to be effectively controlled under the standard treatment regimen (or the medication that is available and tolerable as recommended by clinical practice) and...

Countries:China
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Frequently asked questions about CS-121

What is CS-121 used for?

CS-121 is an investigational monoclonal antibody being developed for the treatment of severe hypertriglyceridemia (sHTG), a metabolic condition characterized by extremely high levels of triglycerides in the blood. It is currently in early clinical development and has not been approved by regulatory authorities.

Who makes CS-121?

CS-121 is being developed by cbdMD, Inc., a company publicly traded under the ticker symbol YCBD. The drug is in Phase 1 clinical development for severe hypertriglyceridemia, with an ongoing clinical trial planned in China.

What phase is CS-121 in?

CS-121 is in Phase 1 clinical development. It is an investigational drug and has not been approved by the FDA or any other regulatory agency. The drug is being studied for the treatment of severe hypertriglyceridemia, and its safety and efficacy have not yet been established.

What clinical trials is CS-121 in?

CS-121 is being evaluated in a single early Phase 1 clinical trial registered as NCT07657780, titled 'CS-121 APOC3 Base Editing in Severe Hypertriglyceridemia.' The trial is not yet recruiting and plans to enroll 15 participants with severe hypertriglyceridemia in China.

Is CS-121 a gene therapy?

CS-121 is a monoclonal antibody, not a gene therapy. However, its clinical trial title references APOC3 base editing, which suggests the study may involve gene editing technology. The drug itself is classified as a monoclonal antibody modality for treating severe hypertriglyceridemia.