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CTX340

Phase 1

Hypertension | Small molecule | Cardiovascular |CRISPR Therapeutics AG|Trials Updated: Aug 11, 2026

CTX340 development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Aug 2026

CTX340 target and mechanism

Molecular targetAGT
Target classGene
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment69

FDA Designations

No designations recorded

CTX340 clinical trials

CTX340 · 1 trial · 1 indication

Phase 1 1
NCT07758634A Trial Evaluating Safety, Tolerability and Efficacy of CTX340 in Participants With HypertensionHypertension
RECRUITING69 Analytics
PHASE1RECRUITING
A Trial Evaluating Safety, Tolerability and Efficacy of CTX340 in Participants With Hypertension
HypertensionUnlock trial analytics

Study Endpoints

Primary Endpoints

Phase 1: Incidence of dose-limiting toxicities (DLTs)
Up to 12 months

To evaluate the safety and tolerability of a single ascending dose of CTX340 in participants with hypertension to determine the recommended Phase 2 dose (RP2D).

Phase 2: Percentage change in circulating angiotensinogen (AGT) concentration from baseline
Through 6 months of follow-up.

To evaluate the pharmacodynamics (PD) effect of CTX340 at the recommended Phase 2 dose (RP2D)

Secondary Endpoints

To assess the safety of CTX340
From CTX340 infusion up to 12 months
To assess the effect of CTX340 on systolic blood pressure (SBP) by ambulatory blood pressure monitoring (ABPM)
From CTX340 infusion up to 12 months
To assess the pharmacodynamics (PD) effect of CTX340
Over 12 months, compared to baseline
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Phase 1: CTX340EXPERIMENTALPhase 1 is An Open-Label, Ascending Dose Design.
Phase 2: Recommended Phase 2 Dose CTX340EXPERIMENTALPhase 2: Recommended Phase 2 Dose CTX340.
Phase 2: PlaceboEXPERIMENTALPhase 2: Placebo.

Interventions

NameTypeDescription
CTX340DRUGCTX340 is an in vivo gene editing therapy designed to utilize clustered regularly interspaced short palindromic repeats-CRISPR-associated protein 9 (CRISPR-Cas9) to target and disrupt human angiotensinogen (AGT) gene in liver.
PlaceboDRUGOne of the arms in Phase 2 will be placebo.
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites2

Key Inclusion Criteria: 1. Age: ≥18 and ≤75 years. 2. Body mass index ≤40 kg/m2. 3. 24-hour mean ambulatory blood pressure monitoring (ABPM) systolic blood pressure (SBP) measurement of ≥130 mm Hg but ≤160 mm Hg despite treatment 4. Be on treatment with ≥4 antihypertensive therapies at effective do...

Countries:United StatesAustralia
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Recent Changes (Last 90 Days)

LOWAug 11, 2026NCT07758634NEW_TRIAL: changed
LOWAug 11, 2026NCT07758634NEW_TRIAL: changed

Frequently asked questions about CTX340

What is CTX340 used for?

CTX340 is an investigational small molecule being developed for the treatment of hypertension. It is currently in Phase 1 clinical development and is not yet approved by regulatory authorities. The drug is being evaluated in a clinical trial for its safety, tolerability, and efficacy in participants with hypertension.

What does CTX340 target?

CTX340 targets the AGT gene, which encodes angiotensinogen, a key component of the renin-angiotensin system involved in blood pressure regulation. By targeting this gene, CTX340 aims to address hypertension at a molecular level. The drug is designed as a small molecule therapeutic for this cardiovascular condition.

Who is developing CTX340?

CTX340 is being developed by CRISPR Therapeutics AG, a biopharmaceutical company publicly traded under the ticker symbol CRSP. The company is conducting a Phase 1 clinical trial to evaluate the drug's safety, tolerability, and efficacy in patients with hypertension.

What phase is CTX340 in?

CTX340 is in Phase 1 clinical development. It is an investigational drug, meaning it has not been approved by the FDA or other regulatory bodies. The ongoing Phase 1 trial is currently recruiting participants to assess the drug's safety, tolerability, and efficacy in individuals with hypertension.

What clinical trials is CTX340 in?

CTX340 is being evaluated in a Phase 1 clinical trial registered as NCT07758634, titled "A Trial Evaluating Safety, Tolerability and Efficacy of CTX340 in Participants With Hypertension." The trial is recruiting 69 participants in the United States and Australia, with an estimated enrollment of 69 individuals aged 18 years and older.