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Efficacy and Safety of KAI-9531 Administered Once Weekly in Participants Living With Obesity Who Do Not Have Diabetes

A Phase 2b, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of KAI-9531 Administered Once Weekly in Participants Living With Obesity Who Do Not Have Diabetes

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07458269
Enrollment
250
Registered
2026-03-09
Start date
2026-03-04
Completion date
2027-06-01
Last updated
2026-04-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Obesity

Keywords

Obesity, KAI-9531, Glucagon-like peptide-1, GLP-1, Glucose-dependent Insulinotropic Peptide, GIP, Obesity Without Diabetes

Brief summary

The primary objective of this study is to determine the effects of KAI-9531 administered by subcutaneous (SC) injection once weekly compared to placebo on percent change in body weight.

Interventions

SC Injection

DRUGPlacebo

SC Injection

Sponsors

Kailera
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * BMI ≥35 kilograms per meter squared (kg/m\^2). * History of at least 1 self-reported unsuccessful effort to lose weight with diet and exercise within the prior 6 months. Key

Exclusion criteria

* Current diagnosis or history of diabetes mellitus, including type 1 diabetes mellitus (T1DM) or type 2 diabetes mellitus (T2DM), history of diabetic ketoacidosis, or hyperosmolar state/coma. * Started medications within 3 months prior to Screening that may cause significant weight gain, including, but not limited to, tricyclic antidepressants, atypical antipsychotics, and mood stabilizers. * Unstable weight defined as self-reported change in body weight exceeding 5% within 3 months prior to Screening. * Family or personal history of multiple endocrine neoplasia Type 2 or medullary thyroid cancer. * Uncontrolled hypertension or unstable cardiovascular disease. * History of chronic or acute pancreatitis. * Known clinically significant gastric-emptying abnormality or chronic treatment with medications that directly affect gastrointestinal motility. * History of suicide attempt. * History of significant active or unstable Major Depressive Disorder (MDD) or other severe psychiatric disorder within 2 years prior to Screening. * Received treatment with semaglutide, tirzepatide, glucagon-like peptide-1 receptor (GLP-1R) agonist, GLP-1R/glucose-dependent insulinotropic polypeptide receptor (GIPR), or glucagon receptor agonist within 3 months prior to Screening. Note: Additional inclusion/

Design outcomes

Primary

MeasureTime frame
Percent Change From Baseline in Body Weight at Week 48Baseline, Week 48

Secondary

MeasureTime frame
Percent of Participants with ≥5%, ≥10%, ≥15%, ≥20% and ≥25% Reduction From Baseline in Body WeightBaseline, Week 48
Change From Baseline in Waist CircumferenceBaseline, Week 48
Change From Baseline in Absolute Body WeightBaseline, Week 48
Change From Baseline in Body Mass Index (BMI)Baseline, Week 48
Percent Change From Baseline in Fasting TriglyceridesBaseline, Week 48
Percent Change From Baseline in Fasting High-density Lipoprotein (HDL)-cholesterolBaseline, Week 48
Percent Change From Baseline in Fasting Non-HDL-cholesterolBaseline, Week 48
Percent Change From Baseline in Fasting Total CholesterolBaseline, Week 48
Percent Change From Baseline in Fasting Low-density Lipoprotein (LDL)-cholesterolBaseline, Week 48
Percent Change From Baseline in Fasting Very Low-density Lipoprotein (VLDL)-cholesterolBaseline, Week 48
Percent Change From Baseline in Fasting InsulinBaseline, Week 48
Change From Baseline in Fasting Blood GlucoseBaseline, Week 48
Number of Participants With Treatment-emergent Adverse Events (TEAEs)Day 1 up to Week 52
Number of Participants With Anti-drug Antibodies (ADAs)Day 1 up to Week 52
Number of Participants With Neutralizing Antibodies (NAbs)Day 1 up to Week 52
Plasma Concentrations of KAI-9531Day 1 up to Week 52

Countries

United States

Contacts

CONTACTKailera Therapeutics, Inc.
info-clinicalstudies@kailera.com781-317-0291

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 21, 2026