Tests a new drug, ARO-ALK7, in adults with obesity
Tests ARO-ALK7 against placebo in adults with obesity, with or without diabetes.
Plain-language title generated from the registry record
Registry title: A First-In-Human Study of ARO-ALK7 in Adults With Obesity With and Without Type 2 Diabetes Mellitus
Key facts
- Where
- Morayfield and Nedlands, AustraliaSee the 2 sites
- Phase
- Phase 1/2
AI summary: who the study is looking for
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for adults with obesity, with or without type 2 diabetes, who have tried and failed to lose weight through lifestyle changes. It tests a new drug called ARO-ALK7.
- Age
- 18 to 65 years
- Sex
- Men and women can join.
- Disease stage
- Obesity with a body mass index (BMI) between 30-50 kg/m^2 and a weight of no more than 159 kg (350 lbs) at screening. Type 2 diabetes is allowed in part 2 of the trial.
- Earlier treatment
- At least one self-reported, unsuccessful attempt at weight loss with lifestyle changes. No GLP-1 receptor agonist (such as liraglutide or semaglutide) in the 6 months before screening. No other weight-loss medicine in the 3 months before screening.
Main reasons for not taking part
- Weight gain or loss of more than 5% in the 3 months before screening
- Obesity mainly caused by medication, a single-gene disorder or a hormone disorder (other than polycystic ovary syndrome)
- Earlier surgery or device treatment for obesity
- Medicines that cause weight gain or change body composition in the 3 months before screening
- Type 1 diabetes
Read by machine on 12 November 2026.
Could this be for you?
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 18 and 65 years old?
Source: NCT06937203, who can take part
Where in Australia
- Morayfield, QLCHospital not named in the registryContact: Principle Investigator (principal investigator)Taking people
- Nedlands, Western AustraliaHospital not named in the registryContact: Principle Investigator (principal investigator)Not yet recruiting
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorTrial details
- Who runs it
- Arrowhead Pharmaceuticals
- Trial code
- NCT06937203
- Record updated
- 8 July 2026
- Original description
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-ALK7 in adult participants with obesity without Type 2 Diabetes Mellitus (T2DM) (Part 1), and the safety, tolerability, and PD of multiple doses of ARO-ALK7 in adult participants with obesity with and without T2DM, either as monotherapy or in combination with tirzepatide (Part 2).Read full original descriptionShow less
A Phase 1/2A Dose-Escalating Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of ARO-ALK7 in Adult Volunteers With Obesity With and Without Type 2 Diabetes Mellitus
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-ALK7 in adult participants with obesity without Type 2 Diabetes Mellitus (T2DM) (Part 1), and the safety, tolerability, and PD of multiple doses of ARO-ALK7 in adult participants with obesity with and without T2DM, either as monotherapy or in combination with tirzepatide (Part 2).
Inclusion: Obesity, defined as body mass index (BMI) between 30-50 kilograms (kg)/square meter (m\^2), inclusive, with weight at Screening not to exceed 159 kg (350 pounds [lbs]); At least one self-reported, unsuccessful attempt at weight loss with lifestyle modification; No abnormal finding of clinical relevance at Screening that could adversely impact participant safety during the study or adversely impact study results; Female participants of childbearing potential must agree to use highly effective contraception and male participants with female partners of childbearing potential must agree to use a condom during the study and for at least 90 days following the end of the study or last dose of study drug, whichever is later. Participants must not donate sperm or eggs during the study for at least 90 days following the end of the study or last dose of study drug, whichever is later.
Exclusion: Self-reported (or documented) weight gain or loss >5% within 3 months prior to Screening; Use of glucagon-like peptide-1 receptor agonist (GLP-1RAs) (liraglutide, semaglutide, etc.) for any indication within 6 months prior to Screening; Use of non-GLP-1R 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 supplement taken for weight loss purposes; History of prior surgical or device-based therapy for obesity (including endoscopic bariatric procedures); Use of medications or therapies strongly associated with weight gain, alterations in body composition, or increase in muscle mass, within 3 months prior to Screening; Obesity attributable primarily in the Investigator's opinion to medication use, monogenic or endocrinologic disorders (other than polycystic ovary syndrome); Type 1 diabetes mellitus; Note: Additional inclusion/exclusion criteria may apply per protocol.