Clinical trial Recruiting at 3 sites Phase 2 Interventional Ages 18 to 75

Test MAR002 for acromegaly in adults on or off medical therapy

Official title: A Phase 2, Multicenter, Randomized, Double-Blind, Placebo- Controlled, Multiple-Dose Study to Evaluate Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of MAR002 in Participants With Acromegaly (TROUGH-2)

Run by Marea Therapeutics · NCT07641179 · Data updated 2026-11-12

This study tests whether subcutaneous MAR002 is safe and tolerable in adults with acromegaly, compared with a placebo, over 10 weeks.

More Acromegaly trials

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment72 (estimated)
SponsorMarea Therapeutics
Industry-sponsored
Drugs / interventionsradiation
Locations3 sites (Phoenix, Arizona and 2 other locations)
StatusRecruiting
StartedJuly 23, 2026
Main results expectedAugust 2027
Study endsDecember 2027
Registry record updatedSeptember 11, 2026
Trial IDNCT07641179 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18 to 75 with active acromegaly, documented pituitary tumor, and elevated IGF-1 who are either not receiving medical therapy, controlled on therapy, or uncontrolled on therapy, and who meet other eligibility criteria.

Probably not a fit

Patients whose condition does not respond to MAR002 or who experience intolerable adverse effects or safety concerns may not benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a phase 2, randomized, multicenter, double-blind, placebo-controlled study to find a dose range for MAR002 in adults with acromegaly. After screening, participants are assigned in a 3:1 ratio to one of three MAR002 regimens or placebo and receive injections every two weeks during a 10-week treatment period, followed by a follow-up and an end-of-study visit at week 16. Eligible participants include adults 18 to 75 with confirmed acromegaly and elevated IGF-1, with stratification into three groups based on prior medical therapy response. The study aims to enroll about 72 participants across three sites in the United States. Primary outcomes focus on safety and tolerability of SC MAR002 across dose ranges.

Why it matters

Potential benefit: If MAR002 is safe and tolerable, it could lead to effective treatment options for adults with acromegaly.

How similar studies have gone: Previous dose-range finding trials in related therapies have shown safety signals in endocrine conditions, but MAR002 in acromegaly is a novel approach within this study design.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Willing to provide written informed consent and comply with study procedures as specified in this protocol and comply with study treatment.
2. Age 18 to 75 years (inclusive) at screening with active acromegaly confirmed by an endocrinologist specialized in the care of pituitary patients. At a minimum, there must be documentation of a pituitary tumor (e.g., imaging evidence of a pituitary tumor by magnetic resonance imaging \[MRI\]/computerized tomography \[CT\] or histopathologic evidence of pituitary adenoma following pituitary surgery) and an elevated IGF-1 in the past.
3. Participants receiving acromegaly medical therapy at screening (i.e., Group 2 and Group 3) may be enrolled if the regimen is considered stable by the Investigator and must agree to wash out acromegaly treatment, if applicable per protocol.
4. Average serum IGF-1 level of ≥ 1.3 × ULN defined as the mean of 2 measurements obtained ≥ 1 week apart during Screening.
5. Participants with hypothyroidism and adrenal insufficiency should have these hormone axes adequately replaced as judged by the Investigator.
6. Weight ≥ 50 kg at screening.

Exclusion Criteria:

1. History of hypersensitivity to monoclonal antibodies.
2. Participation in any other investigational drug study and received the last dose of investigational drug within 60 days or 5 half-lives (whichever is longer) of SV1.
3. History of severe allergic or anaphylactic reactions.
4. History of malignancy within 5 years prior to screening other than successfully treated basal or squamous cell carcinoma or localized cervical carcinoma. Any carcinoma in situ is allowed if appropriately treated within 2 years prior to screening. Subjects with a history of malignancy ≥ 5 years prior to screening should be considered cured of their oncological disease.
5. Pituitary surgery in the past 6 months prior to screening or any prior use of pituitary radiation therapy.
6. Pituitary adenoma with concern for mass effect on the optic chiasm or other critical structures within the study period as per judgment of the Investigator.
7. Poorly controlled diabetes mellitus, defined as having a hemoglobin A1c (HbA1c) ≥ 9.0%.
8. Severe renal insufficiency (estimated glomerular filtration rate \[eGFR by Chronic Kidney Disease Epidemiology Collaboration\] \< 30 mL/min/1.73 m2) or significant liver disease (including cirrhosis) prior to randomization.
9. History or evidence of any of the following within the previous 12 months: myocardial infarction, cardiac surgery revascularization (coronary artery bypass grafting or percutaneous transluminal coronary angioplasty), hospitalization for heart failure, or stroke or transient ischemic attack.

Where it's running

  • St. Joseph's Hospital and Medical Center
    Phoenix, Arizona, United States
    Recruiting
  • Endocrinology Associates, Inc
    Columbus, Ohio, United States
    Recruiting
  • Consano Clinical Research
    San Antonio, Texas, United States
    Recruiting

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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  • MAR002 in healthy men

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  • Evaluating the effects of acromegaly on hand and foot dimensions and movement

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.