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A Single-dose Study to Investigate the Effect of Injection Site on KAI-9531 Relative Bioavailability in a Range of Body Mass Indices

A Phase 1, Randomized, Open-label, Single-Dose, Crossover Study to Investigate the Effect of Injection Site on Relative Bioavailability of KAI-9531 Subcutaneous Injection in Participants With a Range of Body Mass Indices

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07044401
Enrollment
51
Registered
2025-07-01
Start date
2025-07-14
Completion date
2025-11-13
Last updated
2025-12-05

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

Conditions

Healthy Volunteers

Keywords

Overweight, Obesity, KAI-9531

Brief summary

The main objective of the study is to assess the relative bioavailability of KAI-9531 subcutaneous (SC) injection in the upper arm and thigh compared to the abdomen.

Interventions

SC Injection.

Sponsors

Kailera
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* Body mass index (BMI) ≥ 25.0 and ≤ 40.0 kilograms per square meter (kg/m\^2), with a body weight ≤ 120 kg. * Medically healthy.

Exclusion criteria

* Known hypersensitivity to the study drug or any of the study drug ingredients. * History or presence of clinically significant cardiovascular, pulmonary, hepatic, renal, hematological, gastrointestinal, endocrine, immunologic, dermatologic, psychiatric, or neurological disease/disorder. * Any history of malignant disease in the last 10 years (excludes surgically resected skin squamous cell or basal cell carcinoma). * Estimated glomerular filtration rate (eGFR) \<60 milliliters per minute per 1.73 square meters of body surface area (mL/min/1.73 m\^2) using the 2021 Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation. * Glycosylated hemoglobin (HbA1c) test result ≥6.5%. * A history of or positive test results at the Screening visit for human immunodeficiency virus (HIV), hepatitis B surface antigen (HBsAg) or hepatitis C virus (HCV) antibody (HCVab) with HCV ribonucleic acid (RNA) confirmation if positive. * Positive drugs of abuse or alcohol test results. * Participation in another clinical study of an investigational drug or investigational device within 30 days or 5 half-lives of the investigational drug (whichever is longer). * Any other condition or prior therapy that would make the participant unsuitable for this study, including inability to cooperate fully with the requirements of the study protocol or likelihood of noncompliance with any study requirements. Note: Additional inclusion/

Design outcomes

Primary

MeasureTime frame
Maximum Observed Concentration (Cmax) of KAI-9531Treatment Period 1, 2 and 3: Pre-dose and up to 672 hours post-dose
Area Under the Concentration-time Curve From 0 to Time of Last Quantifiable Concentration (AUC0-t) of KAI-9531Treatment Period 1, 2 and 3: Pre-dose and up to 672 hours post-dose
Area Under the Concentration-time Curve From 0 to Infinity (AUC0-inf) of KAI-9531Treatment Period 1, 2 and 3: Pre-dose and up to 672 hours post-dose

Secondary

MeasureTime frame
Number of Participants Who Experience a Treatment-emergent Adverse Event (TEAE)Day 1 to Day 113
Number of Participants Who Experience a Serious Adverse Event (SAE)Day 1 to Day 113
Number of Participants Who Experience Antidrug Antibodies to KAI-9531Day 1 to Day 113

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026