HAELO: A Phase 3 Study to Evaluate NTLA-2002 in Participants With Hereditary Angioedema (HAE)

NCT ID: NCT06634420

Last Updated: 2025-12-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE3

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-01-15

Study Completion Date

2027-09-30

Brief Summary

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This Phase 3 study aims to evaluate the efficacy and safety of NTLA-2002 compared to placebo in participants with HAE.

Detailed Description

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This is a multinational, multicenter, double-blind, placebo-controlled study in which approximately 60 participants will be randomized in a 2:1 ratio to receive a single IV infusion of NTLA-2002 or placebo. After the Primary Observation Period (Week 1 through Week 28), participants will have the option to receive a blinded, single IV infusion of the opposite treatment. Following the Primary Observation Period, participants will enter the Long-Term Observation Period (76 weeks), for a total of 104 weeks. Including the Screening and Run-In Period, prior to the first blinded dosing, the total study duration is approximately 28 months.

Conditions

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Hereditary Angioedema

Keywords

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Hereditary Angioedema NTLA-2002 HAE HAE-C1INH-Type1 or -Type 2

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Arm A: NTLA-2002

Arm A: NTLA-2002 (50 mg; single IV infusion)

Group Type ACTIVE_COMPARATOR

NTLA-2002

Intervention Type BIOLOGICAL

CRISPR/Cas9 gene editing system delivered by lipid nanoparticle (LNP) for intravenous (IV) administration

Arm B: Placebo

Arm B: Placebo (saline; single IV infusion)

Group Type PLACEBO_COMPARATOR

Normal Saline IV Administration

Intervention Type BIOLOGICAL

The administration of intravenous (IV) normal saline

Interventions

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NTLA-2002

CRISPR/Cas9 gene editing system delivered by lipid nanoparticle (LNP) for intravenous (IV) administration

Intervention Type BIOLOGICAL

Normal Saline IV Administration

The administration of intravenous (IV) normal saline

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

1. Age ≥16 years
2. Clinical history consistent with HAE-C1INH-Type 1 or -Type 2
3. Ability to provide evidence of HAE attacks (confirmed by the Investigator) to meet the screening requirement
4. Must agree to refrain from the use of long-term prophylactic therapies from the start of the screening period through the end of the Primary Observation Period. PI must be in agreement that it is medically acceptable for the participant to do so.
5. Must have access to, and the ability to use, on-demand medication(s) to treat potential angioedema attacks
6. Adequate chemistry and hematology measures at screening
7. Must agree not to participate in another interventional study for the duration of this trial.
8. Must be capable of providing signed informed consent. Participants 16 to \< 18 years of age, whose legal guardian provides informed consent, must provide assent.
9. Must agree to follow contraception requirements

Exclusion Criteria

1. Concurrent diagnosis of any other type of recurrent angioedema or HAE with normal C1-INH
2. Have known negative reaction or hypersensitivity to any lipid nanoparticles (LNP) component.
3. Any condition that, in the Investigator's opinion, could adversely affect the safety of the subject.
4. Unwilling to comply with study procedures.
Minimum Eligible Age

16 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Intellia Therapeutics

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Medical Research of Arizona

Scottsdale, Arizona, United States

Site Status

University of California, San Diego (UCSD)

San Diego, California, United States

Site Status

Raffi Tachdjian MD, Inc

Santa Monica, California, United States

Site Status

Allergy & Asthma Clinical Research

Walnut Creek, California, United States

Site Status

IMMUNOe International Research Centers

Centennial, Colorado, United States

Site Status

Asthma & Allergy Associates

Colorado Springs, Colorado, United States

Site Status

University of South Florida

Tampa, Florida, United States

Site Status

Massachusetts General Hospital

Boston, Massachusetts, United States

Site Status

Washington University in St. Louis

St Louis, Missouri, United States

Site Status

NYU Langone Health - Long Island

Mineola, New York, United States

Site Status

Icahn School of Medicine at Mount Sinai

New York, New York, United States

Site Status

Bernstein Clinical Research Center, LLC

Cincinnati, Ohio, United States

Site Status

Penn State Milton S. Hershey Medical Center

Hershey, Pennsylvania, United States

Site Status

AARA Research Center

Dallas, Texas, United States

Site Status

Campbelltown Hospital

Campbelltown, New South Wales, Australia

Site Status

The Alfred Hospital

Melbourne, Victoria, Australia

Site Status

Royal Melbourne Hospital

Parkville, Victoria, Australia

Site Status

University of Alberta

Edmonton, Alberta, Canada

Site Status

Ottawa Allergy Research Corporation

Ottawa, Ontario, Canada

Site Status

CHU Grenoble-Alpes - Hopital Michallon

Grenoble, , France

Site Status

CHU de Lille - Hopital Claude Huriez

Lille, , France

Site Status

AP-HM - Hopital de la Timone

Marseille, , France

Site Status

Charite Universitaetsmedizin Berlin

Berlin, , Germany

Site Status

Universitaetsklinikum Frankfurt - Klinikum der Johann Wolfgang Goethe Universitaet

Frankfurt, , Germany

Site Status

Medizinische Hochschule Hannover (MHH)

Hanover, , Germany

Site Status

Amsterdam UMC - Locatie AMC

Amsterdam, , Netherlands

Site Status

New Zealand Clinical Research (NZCR)

Auckland, , New Zealand

Site Status

University of Cape Town - Lung Institute - Lung Clinical Research Unit

Cape Town, , South Africa

Site Status

Cambridge University Hospitals NHS Foundation Trust

Cambridge, , United Kingdom

Site Status

Countries

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United States Australia Canada France Germany Netherlands New Zealand South Africa United Kingdom

Other Identifiers

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ITL-2002-CL-301

Identifier Type: -

Identifier Source: org_study_id