PEDEvidence

Trevogrumab

What it is & what research shows

Reference overview

Trevogrumab is an investigational antibody against myostatin, also called GDF8. It is being studied as a way to preserve lean tissue during semaglutide-associated weight loss. The phase 2 COURAGE program compares combinations involving semaglutide and trevogrumab, with or without the separate activin-A antibody garetosmab. Sponsor conference results report better lean-mass preservation. [1.1][1.2]

Results from a two-drug regimen must be distinguished from the three-drug regimen. DXA body composition does not directly measure muscle quality or strength, and the findings do not validate products sold online as myostatin inhibitors. A source-linked study result with a verified dose and schedule is not yet available in this overview. This is a gap in this page, not a claim that no research exists. [2.1][2.2]

Studied methods, not dosing advice. Selected evidence, not a complete literature review or formal quality appraisal.
Sources & reading scope

Study-summary coverage

No completed study summaries are linked to this compound page yet. This is a coverage gap on PED Evidence, not evidence that human studies or other research do not exist.

Filter, save and compare Trevogrumab studies →

Original papers, trial registrations and sponsor disclosures are labeled separately. Multiple links may describe the same study.

Sources checked September 24, 2026.

More about Trevogrumab: identity, safety & reference details
BiologicMuscle & performance
Primary research area
Emerging research
Regulatory status
Research status varies
Evidence level
Evidence level not yet characterized
Primary mechanism
Mechanism not yet characterized
Reference profile available · Coverage varies by section

Also known as REGN1033

Start with the research

An outcome-specific synthesis has not been prepared for this compound. This is a coverage gap, not evidence that it has no effect.

Open studies and trial records
Uses & research

The phase 2 COURAGE program compares combinations involving semaglutide and trevogrumab, with or without the separate activin-A antibody garetosmab. Sponsor conference results report better lean-mass preservation. [1][2]

Known half-life

No source-verified value in this profile yet. A treatment schedule or duration of an effect is not a drug half-life.

Half-life describes how quickly the measured drug concentration falls by half. It does not set a dosing interval.
Evidence & important limits

Results from a two-drug regimen must be distinguished from the three-drug regimen. DXA body composition does not directly measure muscle quality or strength, and the findings do not validate products sold online as myostatin inhibitors. [1][2]

Safety & evidence boundaries

Source-specific information, not a personal safety clearance or monitoring plan.

Results from a two-drug regimen must be distinguished from the three-drug regimen. DXA body composition does not directly measure muscle quality or strength, and the findings do not validate products sold online as myostatin inhibitors.

Explore safety questions by system

These are literature filters, not claims that this compound causes each effect. A keyword match is not a confirmed adverse reaction.

Interactions, rare harms, long-term effects and reversibility require separate evidence. Do not infer they are absent when the sources here do not address them.

Identity, names & formulations

Canonical compound: Trevogrumab · trevogrumab

Searchable names: REGN1033

Names share a parent research page. Different esters, salts, routes and brands are not assumed to have the same half-life, indication or exposure.

Combination evidence stays attached to the studied combination. It is not automatically assigned to each ingredient.

Understand the evidence types

Read the model and design first, then the population, outcome and limitations. These categories describe evidence, not a best-compound ranking.

Randomized human trials
Compare assigned interventions. Randomization does not by itself establish low bias or relevance to every population.
Controlled human studies
Use a comparison group; allocation and confounding still matter.
Prospective human research
Follows participants forward. It may be observational or interventional, so this is not a separate quality grade.
Observational human research
Describes associations. Confounding can explain differences.
Case reports and series
Useful for unusual events and safety signals, not reliable rates or effect sizes.
Animal research
Can test biology and function in a living model. Human exposure, benefit and safety remain separate questions.
Cell and tissue research
Tests responses in a preparation, including human-derived cells. It is not a human participant trial.
Mechanistic and computational evidence
Helps explain or predict a pathway; predictions need experimental and clinical testing.
Anecdotal reports
Self-reported experiences can generate questions. Product identity, selection bias and other interventions may be uncontrolled.

Systematic reviews synthesize studies and depend on their quality. Preprint status and abstract versus full-paper reading are separate labels. Citation popularity measures attention, not reliability. A study summary is not a formal quality appraisal.

Sources for this profile

  1. 1. COURAGE: semaglutide with trevogrumab, with or without garetosmab Trial registration · Study design and any posted results; registration does not establish treatment benefit.
  2. 2. COURAGE: complete 26-week results Sponsor report · Conference results on DXA lean and fat mass; not proof of strength gains.

Reference facts checked 2026-09-24. Source scope is listed above; this is not a formal quality appraisal. See each label for full prescribing information.

Browse all studies

Study model describes the source. Confidence depends on methods, replication, population and outcome.

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Common questions about Trevogrumab