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ObesityPhase 3KaiNETIC-1NCT07284875

Efficacy and Safety of Ribupatide in Participants Living With Obesity or Overweight With Weight-Related Comorbidities Who Do Not Have Diabetes

A Phase 3 study testing Ribupatide in people with Obesity and Overweight, run by Kailera at 110 sites in 10 countries.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

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

Who is it for?
Ages 18 years and older
Conditions the study is for
Obesity, Overweight
What is being tested?
Ribupatide
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
2,530 participants
Where
110 sitesin 10 countries
Study dates
18 Dec 2025to Mar 2028
Phase
Phase 3
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • BMI ≥30 kg/m^2 or BMI ≥27 kg/m^2 and previously diagnosed with at least 1 of the following:
  • hypertension,
  • dyslipidemia,
  • obstructive sleep apnea, or
  • cardiovascular (CV) disease.
  • History of being unresponsive to at least 1 self-reported effort to lose weight with diet and/or exercise in the last 6 months.

Who cannot join

  • Current diagnosis or history of diabetes mellitus.
  • Started medications within 3 months prior to Screening that may cause significant weight change, including, but not limited to: tricyclic antidepressants, atypical antipsychotics, mood stabilizers, or phentermine.
  • 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.
Show all 11Show fewer
  • 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.
  • Received treatment with semaglutide, tirzepatide, GLP-1 receptor agonist, GLP-1/glucose-dependent insulinotropic polypeptide (GIP), or glucagon receptor agonist within 3 months prior to Screening.
  • Note: Additional inclusion/exclusion criteria may apply, per protocol.

Trial locations and contacts

110 sites in 10 countries.

110 sites in 10 countries

United States24 sites
  • Kailera Clinical Site

    Amarillo, Texas, 79124

  • Kailera Clinical Site

    Anniston, Alabama, 36207

  • Kailera Clinical Site

    Aurora, Colorado, 80012

  • Kailera Clinical Site

    Bellaire, Texas, 77401

  • Kailera Clinical Site

    Birmingham, Alabama, 35294

  • Kailera Clinical Site

    Bridgeport, Connecticut, 06606

  • Kailera Clinical Site

    Chattanooga, Tennessee, 37405

  • Kailera Clinical Site

    Chickasha, Oklahoma, 73018

  • Kailera Clinical Site

    Columbia, Maryland, 21045

  • Kailera Clinical Site

    Cullman, Alabama, 35055

  • Kailera Clinical Site

    Danville, Virginia, 24541

  • Kailera Clinical Site

    DeSoto, Texas, 75115

  • Kailera Clinical Site

    Escondido, California, 92025

  • Kailera Clinical Site

    Jupiter, Florida, 33458

  • Kailera Clinical Site

    Las Vegas, Nevada, 89119

  • Kailera Clinical Site

    Lilburn, Georgia, 30047

  • Kailera Clinical Site

    Mauldin, South Carolina, 29662

  • Kailera Clinical Site

    Morehead City, North Carolina, 28557

  • Kailera Clinical Site

    Rochester, New York, 14609

  • Kailera Clinical Site

    Salt Lake City, Utah, 84124

  • Kailera Clinical Site

    Springfield, Illinois, 62072

  • Kailera Clinical Site

    Sun City, Arizona, 85351

  • Kailera Clinical Site

    Toluca Lake, California, 91602

  • Kailera Clinical Site

    Tomball, Texas, 77375

Other trials in United States

Argentina13 sites
  • Kailera Clinical Site #1

    Buenos Aires, Buenos Aires F.D., 1056

  • Kailera Clinical Site #2

    Buenos Aires, Buenos Aires F.D., 1056

  • Kailera Clinical Site

    Buenos Aires, Buenos Aires F.D., 1060

  • Kailera Clinical Site

    Buenos Aires, Buenos Aires F.D., 1120

  • Kailera Clinical Site

    CABA, 1061

  • Kailera Clinical Site

    Córdoba, 5000

  • Kailera Clinical Site

    Godoy Cruz, Mendoza Province, 5501

  • Kailera Clinical Site

    La Plata, Buenos Aires, 1900

  • Kailera Clinical Site #1

    Rosario, Santa Fe Province, 2000

  • Kailera Clinical Site #2

    Rosario, Santa Fe Province, 2000

  • Kailera Clinical Site #3

    Rosario, Santa Fe Province, 2000

  • Kailera Clinical Site #1

    San Nicolás de los Arroyos, Buenos Aires, 2900

  • Kailera Clinical Site #2

    San Nicolás de los Arroyos, Buenos Aires, 2900

Other trials in Argentina

Bulgaria11 sites
  • Kailera Clinical Site

    Kyustendil, Kyustendil Province, 2500

  • Kailera Clinical Site

    Pazardzhik, 4400

  • Kailera Clinical Site

    Plovdiv, 4000

  • Kailera Clinical Site

    Plovdiv, 4020

  • Kailera Clinical Site #1

    Sofia, 1431

  • Kailera Clinical Site #2

    Sofia, 1431

  • Kailera Clinical Site #3

    Sofia, 1431

  • Kailera Clinical Site

    Sofia, 1510

  • Kailera Clinical Site

    Sofia, 1527

  • Kailera Clinical Site

    Varna, 9020

  • Kailera Clinical Site

    Yambol, 8600

Other trials in Bulgaria

Czechia11 sites
  • Kailera Clinical Site

    Bohnice, Prague, 18100

  • Kailera Clinical Site

    Brandýs nad Labem, Central Bohemia, 25001

  • Kailera Clinical Site

    Brno, South Moravian, 61500

  • Kailera Clinical Site

    Hodonín, 69501

  • Kailera Clinical Site

    Krnov, Moravian-Silesian Region, 79401

  • Kailera Clinical Site

    Náchod, Hradec Králové Region, 54701

  • Kailera Clinical Site

    Olomouc, 77900

  • Kailera Clinical Site

    Prague, Prague, 12808

  • Kailera Clinical Site

    Prague, Prague, 14059

  • Kailera Clinical Site

    Prague, 15000

  • Kailera Clinical Site

    Uherské Hradiště, 68601

Other trials in Czechia

United Kingdom11 sites
  • Kailera Clinical Site

    Bradford, West Yorkshire, BD9 6RJ

  • Kailera Clinical Site

    Hounslow, TW4 7NJ

  • Kailera Clinical Site

    Hull, East Yorkshire, HU3 2JZ

  • Kailera Clinical Site

    Leicester, Leicestershire, LE5 4PW

  • Kailera Clinical Site

    London, EC1M 6BQ

  • Kailera Clinical Site

    Manchester, M13 9WL

  • Kailera Clinical Site

    Newcastle upon Tyne, Tyne and Wear, NE1 4LP

  • Kailera Clinical Site

    Nottingham, Nottinghamshire, NG7 2QW

  • Kailera Clinical Site

    Soham, Cambridgeshire, CB7 5JD

  • Kailera Clinical Site

    Stevenage, Hertfordshire, SG1 4AB

  • Kailera Clinical Site

    Torpoint, Cornwall, PL11 2TB

Other trials in United Kingdom

Germany10 sites
  • Kailera Clinical Site

    Cologne, North Rhine-Westphalia, 51069

  • Kailera Clinical Site

    Dresden, Saxony, 01069

  • Kailera Clinical Site

    Essen, North Rhine-Westphalia, 45355

  • Kailera Clinical Site

    Falkensee, Brandenburg, 14612

  • Kailera Clinical Site

    Hamburg, 22415

  • Kailera Clinical Site

    Hamburg, 22607

  • Kailera Clinical Site

    Leipzig, Saxony, 04107

  • Kailera Clinical Site

    Oldenburg in Holstein, Schleswig-Holstein, 23758

  • Kailera Clinical Site

    Schwerin, 19055

  • Kailera Clinical Site

    Tübingen, Baden-Wurttemberg, 72076

Other trials in Germany

Australia9 sites
  • Kailera Clinical Site

    Charlestown, New South Wales, 2290

  • Kailera Clinical Site

    Heidelberg Heights, Victoria, 3081

  • Kailera Clinical Site

    Melbourne, Victoria, 3025

  • Kailera Clinical Site

    Norwood, South Australia, 5067

  • Kailera Clinical Site

    Sippy Downs, Queensland, 4556

  • Kailera Clinical Site

    Sydney, New South Wales, 2019

  • Kailera Clinical Site

    Sydney, New South Wales, 2100

  • Kailera Clinical Site

    Sydney, New South Wales, 2228

  • Kailera Clinical Site

    Wollongong, New South Wales, 2500

Other trials in Australia

Spain9 sites
  • Kailera Clinical Site

    Barcelona, Catalonia, 08035

  • Kailera Clinical Site

    Barcelona, 08023

  • Kailera Clinical Site

    Castilleja de la Cuesta, Sevilla, 41950

  • Kailera Clinical Site

    Ferrol, A Coruna, 15402

  • Kailera Clinical Site

    Madrid, 28003

  • Kailera Clinical Site

    Oviedo, Principality of Asturias, 33011

  • Kailera Clinical Site

    Seville, Andalusia, 41010

  • Kailera Clinical Site

    Valencia, 46014

  • Kailera Clinical Site

    Villamartín, Cadiz, 11650

Other trials in Spain

Poland7 sites
  • Kailera Clinical Site

    Krakow, Lesser Poland Voivodeship, 30-363

  • Kailera Clinical Site

    Poznan, Greater Poland Voivodeship, 60-589

  • Kailera Clinical Site

    Siedlce, Masovian Voivodeship, 08-110

  • Kailera Clinical Site

    Skierniewice, 96-100

  • Kailera Clinical Site

    Torun, Kuyavian-Pomeranian Voivodeship, 87-100

  • Kailera Clinical Site

    Warsaw, Masovian Voivodeship, 00-872

  • Kailera Clinical Site

    Zamość, 22-400

Other trials in Poland

New Zealand5 sites
  • Kailera Clinical Site

    Auckland, 0610

  • Kailera Clinical Site

    Grafton, Auckland, 1010

  • Kailera Clinical Site

    Hamilton, Waikato Region, 3200

  • Kailera Clinical Site

    Nelson, 7011

  • Kailera Clinical Site

    Silverdale, Auckland, 0932

Other trials in New Zealand

About this study

Official title: A Phase 3, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of KAI-9531 Administered Once Weekly in Participants Living With Obesity or Overweight With Weight-Related Comorbidities Who Do Not Have Diabetes

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

Conditions
Obesity, Overweight
Being tested
Ribupatide, Placebo
Keywords
Overweight, Obesity, Ribupatide, KAI-9531, Glucagon-like Peptide-1, GLP-1, Glucose-dependent Insulinotropic Peptide, GIP
Medical subject headings
Obesity, Overweight

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • RibupatideDrug

    Also called KAI-9531

    SC Injection

  • PlaceboDrug

    SC Injection

Study groups in NCT07284875
Study groupRoleWhat they receive
Ribupatide: Dose 1ExperimentalParticipants will receive Dose 1 of ribupatide once weekly.
Receives: Drug: Ribupatide
Ribupatide: Dose 2ExperimentalParticipants will receive Dose 2 of ribupatide once weekly.
Receives: Drug: Ribupatide
Ribupatide: Dose 3ExperimentalParticipants will receive Dose 3 of ribupatide once weekly.
Receives: Drug: Ribupatide
Ribupatide: Dose 4ExperimentalParticipants will receive Dose 4 of ribupatide once weekly.
Receives: Drug: Ribupatide
PlaceboPlacebo comparatorParticipants will receive placebo matched to ribupatide once weekly.
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Dose 3 and 4 versus Placebo: Percent Change From Baseline in Body Weight at Week 76

    Measured: Baseline, Week 76

Secondary outcomes (30)
  1. Dose 1 and 2 versus Placebo: Percent Change From Baseline in Body Weight at Week 76

    Measured: Baseline, Week 76

  2. Percentage of Participants with ≥5%, ≥10%, ≥15%, ≥20% and ≥25% Reduction in Body Weight

    Measured: Baseline, Week 76

  3. Change From Baseline in Waist Circumference

    Measured: Baseline, Week 76

  4. Change From Baseline in Absolute Body Weight

    Measured: Baseline, Week 76

  5. Change From Baseline in Systolic Blood Pressure (SBP)

    Measured: Baseline, Week 76

  6. Percent Change From Baseline in Fasting Triglycerides

    Measured: Baseline, Week 76

  7. Percent Change From Baseline in Fasting High-density Lipoprotein (HDL)-cholesterol

    Measured: Baseline, Week 76

  8. Percent Change From Baseline in Fasting Non-HDL-cholesterol

    Measured: Baseline, Week 76

  9. Change From Baseline in Impact of Weight on Quality of Life-Lite Clinical Trials Version (IWQOL-Lite-CT) Physical Function Composite Score

    Measured: Baseline, Week 76

  10. Participants with Body Mass Index (BMI) ≥35 Kilograms per Square Meter (kg/m^2): Percent Change From Baseline in Body Weight

    Measured: Baseline, Week 76

  11. Percentage of Participants with ≥30% Reduction in Body Weight

    Measured: Baseline, Week 76

  12. Change From Baseline in BMI

    Measured: Baseline, Week 76

  13. Change From Baseline in Diastolic Blood Pressure (DBP)

    Measured: Baseline, Week 76

  14. Percent Change From Baseline in Total Cholesterol

    Measured: Baseline, Week 76

  15. Percent Change From Baseline in Low-density Lipoprotein (LDL)-cholesterol

    Measured: Baseline, Week 76

  16. Percent Change From Baseline in Very Low-density Lipoprotein (VLDL)-cholesterol

    Measured: Baseline, Week 76

  17. Percent Change From Baseline in Fasting Insulin

    Measured: Baseline, Week 76

  18. Change From Baseline in Fasting Blood Glucose

    Measured: Baseline, Week 76

  19. Change From Baseline in Control of Eating Questionnaire (CoEQ) Craving Control Score

    Measured: Baseline, Week 76

  20. Change From Baseline in CoEQ Positive Mood Score

    Measured: Baseline, Week 76

  21. Change From Baseline in CoEQ Craving for Sweets Score

    Measured: Baseline, Week 76

  22. Change From Baseline in CoEQ Craving for Savory Food Score

    Measured: Baseline, Week 76

  23. Change From Baseline in CoEQ Hunger Score

    Measured: Baseline, Week 76

  24. Change From Baseline in CoEQ Satiety Score

    Measured: Baseline, Week 76

  25. Change From Baseline in CoEQ Combined Score

    Measured: Baseline, Week 76

  26. Change From Baseline in Food Noise Questionnaire (FNQ) Score

    Measured: Baseline, Week 76

  27. Number of Participants With Treatment-emergent Adverse Events (TEAEs)

    Measured: Day 1 up to Week 80

  28. Number of Participants With Anti-drug Antibodies (ADAs)

    Measured: Up to Week 80

  29. Number of Participants With Neutralizing Antibodies (Nabs)

    Measured: Up to Week 80

  30. Plasma Concentrations of Ribupatide

    Measured: Up to Week 76

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted16 Dec 2025
  2. Study start18 Dec 2025
  3. Primary completionFeb 2028 (estimated)
  4. Study completionMar 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
2,530 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07284875
Sponsor's protocol ID
K9531-3103
Other IDs
2025-523486-17-00, 2025
Acronym
KaiNETIC-1
Status last verified
Oct 2026
First submitted
9 Dec 2025
Last updated
6 Oct 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Ribupatide in people with Obesity and Overweight, run by Kailera at 110 sites in 10 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 6 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 110 sites in United States, Argentina, Bulgaria, Czechia, United Kingdom and 5 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Dose 3 and 4 versus Placebo: Percent Change From Baseline in Body Weight at Week 76 (time frame: Baseline, Week 76). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Oct 2026.

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