A Safety and Tolerability Trial Evaluating CTX310 in Participants With Refractory Dyslipidemias
A Phase 1 Open-label, Multicenter, First-in-human, Ascending Dose Trial Evaluating the Safety and Tolerability of a Lipid Nanoparticle Formulation of CRISPR-Guide RNA-Cas9 Nuclease (CTX310) for In Vivo Editing of the Angiopoietin-like 3 (ANGPTL3) Gene in Participants With Refractory Dyslipidemias
1 other identifier
interventional
90
4 countries
18
Brief Summary
This is a single-arm, open-label, multicenter, ascending dose Phase 1 trial that will enroll participants 18 to 75 years of age with dyslipidemias that are refractory to available treatments.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_1
Started Jun 2024
Longer than P75 for phase_1
18 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
June 21, 2024
CompletedFirst Submitted
Initial submission to the registry
March 18, 2026
CompletedFirst Posted
Study publicly available on registry
March 24, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
June 1, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
June 1, 2028
May 22, 2026
May 1, 2026
2.9 years
March 18, 2026
May 19, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
To evaluate the safety of CTX310 in adult subjects with dyslipidemias that are refractory to available treatments
Incidence of dose-limiting toxicities and frequency of adverse events
From CTX310 infusion up to 12 months
Secondary Outcomes (4)
To assess the preliminary efficacy of CTX310 in adult participants with dyslipidemias that are refractory to available treatments
Over 12 months, compared to baseline
To further characterize the safety of CTX310 in adult participants with dyslipidemias that are refractory to available treatments
From CTX310 infusion up to 12 months
To assess the pharmacokinetics (PK) of CTX310 in adult participants with dyslipidemias that are refractory to available treatments
From CTX310 infusion up to 12 months
To assess the pharmacodynamic (PD) response of CTX310 in adult participants with dyslipidemias that are refractory to available treatments
Over 12 months, compared to baseline
Study Arms (1)
CTX310
EXPERIMENTALSubjects will receive an intravenous (IV) infusion.
Interventions
CTX310 is a lipid nanoparticle (LNP) formulation of clustered regularly interspaced short palindromic repeats (CRISPR)-associated protein 9 (Cas9) components for in vivo editing of the target gene angiopoietin-like 3 (ANGPTL3).
Eligibility Criteria
You may qualify if:
- Age of ≥18 and ≤75 years at the time of signing the informed consent.
- Able to provide written informed consent.
- Participants diagnosed with persistent dyslipidemias defined by TG ≥150 mg/dL - and LDL-C ≥70 mg/dL in participants with ASCVD, or LDL-C ≥70 or 100mg/dL in participants with or without ASCVD respectively, or TG ≥500 mg/dL.
- Refractory to the maximal intensity or MTD of standard of care lines of lipid-lowering therapies available through routine clinical care, for at least 12 weeks prior to screening
- Female participants must be postmenopausal or surgically sterile.
- All male participants and their female partners must agree to the use of an acceptable method of effective contraception for the duration of the study.
You may not qualify if:
- Participants with familial chylomicronemia syndrome (FCS). Some exceptions may apply.
- Evidence of liver disease, defined as but not limited to:
- LFTS \>2 × upper limit of normal (ULN), or total bilirubin \>2 × ULN, or INR \>1.5 × ULN, or liver stiffness measured by liver elastography
- Abnormal or compromised function of kidney, heart, blood or liver.
- Acute coronary syndrome event or stroke within 24 weeks prior to Day 1. Acute pancreatitis within 12 weeks prior to Day 1.
- Current use or use within 365 days from Day 1 of any hepatocyte-targeted small interfering RNA (except inclisiran).
- Positive serology for HIV, hepatitis B or hepatitis C (antibody, surface antigen orNAT). Serology consistent with prior immunization will be eligible for the trial.
- Any prior malignancy within the past 5 years, or current malignancy (exceptions for resected or removed basal cell carcinoma, squamous cell carcinoma in situ and carcinoma in situ of the cervix or breast).
- Women of childbearing potential.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (18)
Research Site 10
Jacksonville, Florida, 32216, United States
Research Site 17
Orlando, Florida, 32789, United States
Research Site 11
Port Orange, Florida, 32127, United States
Research Site 14
Durham, North Carolina, 27710, United States
Research Site 13
High Point, North Carolina, 27260, United States
Research Site 9
Cleveland, Ohio, 44195, United States
Research Site 12
Portland, Oregon, 97239, United States
Research Site 1
Adelaide, 5000, Australia
Research Site 15
Brisbane, 4064, Australia
Research Site 16
Brisbane, Australia
Research Site 7
Camperdown, 2050, Australia
Research Site 3
Heidelberg, 3084, Australia
Research Site 2
Melbourne, 3168, Australia
Research Site 5
Auckland, 2025, New Zealand
Research Site 4
Christchurch, 8011, New Zealand
Research Site 18
Cambridge, United Kingdom
Research Site 8
London, E1 1BB, United Kingdom
Research Site 6
London, SE1 1YR, United Kingdom
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 1
- Allocation
- NA
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
March 18, 2026
First Posted
March 24, 2026
Study Start
June 21, 2024
Primary Completion (Estimated)
June 1, 2027
Study Completion (Estimated)
June 1, 2028
Last Updated
May 22, 2026
Record last verified: 2026-05
Data Sharing
- IPD Sharing
- Will not share