Study of ARO-INHBE in Adults With Obesity With and Without Diabetes Mellitus

NCT ID: NCT06700538

Last Updated: 2025-12-17

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

RECRUITING

Clinical Phase

PHASE1/PHASE2

Total Enrollment

120 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-12-04

Study Completion Date

2026-05-31

Brief Summary

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This is a Phase 1/2a double-blind dose-escalating study to evaluate the safety, tolerability, pharmacokinetics (PK) and pharmacodynamics (PD) of single and multiple doses of ARO-INHBE in adult participants with obesity (Part 1), and the safety, tolerability and PD of multiple doses of ARO-INHBE in adult participants with obesity with and without type 2 diabetes mellitus receiving tirzepatide (Part 2).

Detailed Description

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Conditions

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Obesity

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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Part 1: ARO-INHBE

ARO-INHBE in single (Day 1) or multiple (Days 1 and 29) ascending doses

Group Type EXPERIMENTAL

ARO-INHBE

Intervention Type DRUG

SC injection

Part 1: Placebo

Placebo in single (Day 1) or multiple (Days 1 and 29) matching doses

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

calculated volume to match active treatment by SC injection

Part 2: ARO-INHBE + Tirzepatide

ARO-INHBE at ascending doses on Days 1 and 29 plus weekly doses of tirzepatide (2.5 to 5 mg) starting Day 15 through Day 169

Group Type EXPERIMENTAL

ARO-INHBE

Intervention Type DRUG

SC injection

Tirzepatide

Intervention Type DRUG

SC injection

Part 2: Placebo + Tirzepatide

Placebo dose on Days 1 and 29 plus weekly doses of tirzepatide (2.5 to 5 mg) starting Day 15 through Day 169

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

calculated volume to match active treatment by SC injection

Tirzepatide

Intervention Type DRUG

SC injection

Interventions

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ARO-INHBE

SC injection

Intervention Type DRUG

Placebo

calculated volume to match active treatment by SC injection

Intervention Type DRUG

Tirzepatide

SC injection

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Obesity, defined as Body Mass Index (BMI) between 30 to 50 kg/m2 at Screening
* At least one self-reported, unsuccessful attempt at weight loss with lifestyle modification
* Willing, able and motivated to comply with all study assessments and adhere to the protocol schedule, including adherence to a stable diet and exercise routine for the duration of the study
* No abnormal finding of clinical relevance at Screening that, in the opinion of investigator, could adversely impact subject safety or adversely impact study results
* Participants of childbearing potential must agree to use highly effective contraception in addition to a condom during the study and for at least 90 days following the endo of the study or last dose of study medication, whichever is later. Participants must not donate sperm or eggs during the study and for at least 90 days following the end of the study or last dose of study medication, whichever is later.

Exclusion Criteria

* Self-reported (or documented) weight gain or loss \>5% within 3 months prior to Screening
* Use of GLP1R agonists (liraglutide, semaglutide, etc.) for any indication within 6 months prior to Screening
* Use of non-GLP1R medications for weight loss within 3 months prior to Screening, including but not limited to naltrexone/bupropion, orlistat, phentermine/topiramate, and other prescription or over-the-counter medication or supplements taken for weight loss
* Obesity attributable, in the investigator's opinion, to medication use, endocrinologic or monogenic disorders
* History or prior surgical or device-based therapy for obesity
* Use of medications strongly associated with weight gain within 3 months prior to Screening
* Type 1 diabetes mellitus
* History of hyperthyroidism or thyroid-stimulating hormone (TSH) levels \<0.4 or \>6.0 mIU/L at Screening
* Evidence of clinically significant end-organ disease
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Arrowhead Pharmaceuticals

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Research Site 1

Grafton, Auckland, New Zealand

Site Status RECRUITING

Research Site 3

Auckland, , New Zealand

Site Status RECRUITING

Research Site 2

Christchurch, , New Zealand

Site Status RECRUITING

Countries

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New Zealand

Central Contacts

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Medical Monitor

Role: CONTACT

626-304-3400

Other Identifiers

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AROINHBE-1001

Identifier Type: -

Identifier Source: org_study_id