Retatrutide is an investigational molecule. It is not an approved medicine in India, the UAE, or any other country, and it cannot be legally sold for human use. India status · UAE status

Research library

Retatrutide Research Library

Every registered study and peer-reviewed publication referenced across this site, each linked to its primary record. Filter by phase, status or evidence type.

Last verified: 24 October 2026 Entries: 20 indexed Next review: 24 January 2027

Showing all 20 entries.

Peer-reviewed29 Sep 2026

Retatrutide, a Triple Hormone Receptor Agonist, for Treatment of Obesity

Jastreboff AM, et al. New England Journal of Medicine. The full TRIUMPH-1 Phase 3 report. Abstract states 25.0% mean weight reduction at 12 mg versus 3.9% placebo (treatment-regimen estimand).

DOI 10.1056/NEJMoa2604169

Peer-reviewed26 Jun 2023

Triple–Hormone-Receptor Agonist Retatrutide for Obesity — A Phase 2 Trial

Jastreboff AM, et al. New England Journal of Medicine. 338 participants, 48 weeks. 17.5% mean reduction at the 24-week primary endpoint; 24.2% at 48 weeks.

DOI 10.1056/NEJMoa2301972

Peer-reviewed2023

Phase 2 retatrutide in type 2 diabetes

Rosenstock J, et al. The Lancet. The Phase 2 diabetes trial, against placebo and dulaglutide. Full citation pending verification — we have not confirmed volume, pages and DOI from a primary record, so we cite the registry entry and describe design only.

NCT04867785

Phase 3Reported & published

TRIUMPH-1

80-week randomised, double-blind, placebo-controlled master trial in adults with obesity or overweight without diabetes. 2,339 randomised to 4 mg, 9 mg, 12 mg or placebo. Included knee osteoarthritis and sleep apnoea basket trials.

NCT05929066 · Our summary

Phase 3Topline reported

TRIUMPH-2

80-week placebo-controlled trial in adults with type 2 diabetes and obesity or overweight. 1,152 randomised. Weight reduction up to 20.8%; A1C reduction up to 1.6%. Includes Indian sites.

NCT05929079 · Our summary

Phase 3Topline reported

TRIUMPH-3

80-week placebo-controlled trial in severe obesity with established cardiovascular disease. 1,949 randomised 1:1:2. Weight reduction up to 22.6%. Cardiovascular event analyses had confidence intervals crossing 1.0.

NCT05882045 · Our summary

Phase 3Topline reported

TRIUMPH-4

68-week placebo-controlled trial in obesity with knee osteoarthritis. 445 randomised. Co-primary endpoints of WOMAC pain and weight. The programme's first Phase 3 readout, and its highest reported dysesthesia rate.

NCT05931367 · Our summary

Not yet reportedDue Nov 2026

TRIUMPH-5 — versus tirzepatide

The only registered head-to-head comparison against tirzepatide in obesity. 800 adults, 80 weeks, percent body-weight change. The trial that will settle a question currently answered only by cross-trial guesswork.

NCT06662383 · Why it matters

Not yet reportedDue Feb 2029

TRIUMPH-Outcomes

Event-driven trial of about 10,000 participants examining major adverse cardiovascular and kidney events. The only study powered to answer the cardiovascular question. Includes Indian sites.

NCT06383390

Not yet reportedDue Apr 2028

TRIUMPH-6 — weight maintenance

Phase 3b trial of retatrutide in the maintenance of weight reduction. 643 participants, primary endpoint at week 116. Addresses what happens after initial weight reduction.

NCT06859268

Not yet reportedDue Sep 2027

TRIUMPH-7 — chronic low back pain

586 participants with obesity or overweight and chronic low back pain. Co-primary endpoints of pain intensity and percent body-weight change at up to 72 weeks.

NCT07035093

Not yet reportedDue Jul 2027

TRIUMPH-8

Phase 3b randomised, double-blind, placebo-controlled trial in 250 adults without type 2 diabetes who have obesity or overweight. Primary endpoint at week 56.

NCT07232719

Not yet reportedDue Oct 2028

TRIUMPH-9 — dose-escalation schemes

600 participants, comparing different dose-escalation schemes. Primary endpoint percent body-weight change at week 104. Relevant to how tolerability is managed in trial design.

NCT07357415

Phase 3Completed

TRANSCEND-T2D-1

537 adults with type 2 diabetes inadequately controlled with diet and exercise alone. Primary endpoint A1C change at week 40. Includes Indian sites. Completed January 2026.

NCT06354660

Not yet reportedDue Aug 2026

Retatrutide versus semaglutide (type 2 diabetes)

1,250 adults with type 2 diabetes on metformin. Open-label, primary endpoint A1C at week 80 — not an obesity trial and not weight-focused.

NCT06260722 · Why it won't settle the popular question

Not yet reportedDue Oct 2026

TRANSCEND-T2D-3 — renal impairment

320 adults with type 2 diabetes and moderate or severe renal impairment on basal insulin. Primary endpoint A1C at week 52.

NCT06297603

RecruitingDue Aug 2030

MASLD/MASH master protocol

Master protocol of multiple agents in about 4,500 adults with metabolic dysfunction-associated steatotic liver disease at increased risk of major adverse liver outcomes. Includes Indian sites.

NCT07165028

Phase 2Published

Phase 2 obesity trial

48-week randomised, double-blind, placebo-controlled trial, United States only. 338 participants across six retatrutide arms and placebo. The foundation of the Phase 3 programme.

NCT04881760

Phase 2Published

Phase 2 type 2 diabetes trial

281 participants, against placebo and dulaglutide. Primary endpoint A1C change at 24 weeks. The only completed head-to-head against another incretin agent.

NCT04867785

Phase 1Completed 2019

First-in-human study

Single-ascending-dose study of safety, tolerability and pharmacokinetics in 45 healthy participants. The start of retatrutide's clinical programme. Twelve further Phase 1 studies followed.

NCT03841630

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What this library indexes.

About this index

This library indexes the studies and publications cited across this site. It is not a complete list of all 33 registered records — the thirteen Phase 1 studies are summarised collectively rather than listed individually. For the complete register, search ClinicalTrials.gov directly, or see our full programme overview.