A Study to Evaluate MAR002 for Acromegaly

June 8, 2026 updated by: Marea Therapeutics

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)

Evaluate the safety and tolerability of subcutaneous (SC) administration of MAR002 in participants with acromegaly

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Detailed Description

MAR-202 is a randomized, multicenter, double-blind, placebo-controlled dose-range finding study.

After screening, participants who meet all eligibility criteria will be randomized to 1 of 3 active MAR002 regimens or matching placebo in a 3:1 ratio for a 10-week Treatment Period. During the Treatment Period, study drug (MAR002 or matching placebo) will be administered at study visits every 2 weeks (Q2W; Days 1, 15, 29, 43, and 57) followed then by a Follow-up Period before the End of Study (EOS) Visit on Week 16.

This study will aim to enroll a total of approximately 72 participants with acromegaly across 3 groups (Group 1: "untreated"; Group 2: "controlled on medical therapy"; Group 3: "uncontrolled on medical therapy").

Study Type

Interventional

Enrollment (Estimated)

72

Phase

  • Phase 2

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

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.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: MAR002 Dose 1
Subcutaneous injection
Drug: MAR002
Subcutaneous injection
Experimental: MAR002 Dose 2
Subcutaneous injection
Drug: MAR002
Subcutaneous injection
Experimental: MAR002 Dose 3
Subcutaneous injection
Drug: MAR002
Subcutaneous injection
Placebo Comparator: Matched Placebo
Subcutaneous Placebo
Drug: Placebo
Subcutaneous injection

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Number of participants with TEAEs (treatment-emergent adverse events), SAEs (serious adverse events), and other laboratory endpoints
Time Frame: Baseline to Week 16
To assess the safety and tolerability of multiple subcutaneous (SC) dose administrations of MAR002 in participants with acromegaly
Baseline to Week 16
Percent change from baseline in serum insulin-like growth factor 1 (IGF-1) levels as an average of Week 8 and Week 10
Time Frame: Baseline to Week 10
To assess the effect of MAR002 on serum insulin-like growth factor 1 (IGF-1) levels in participants with acromegaly
Baseline to Week 10

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Improvement from baseline in acromegaly symptoms as measured by the Acromegaly Quality of Life (AcroQoL) and the Acromegaly Symptom Diary (ASD)
Time Frame: Baseline to Week 10
To explore the effects of MAR002 on acromegaly symptoms
Baseline to Week 10
Improvement from baseline in acromegaly symptoms as measured by Investigator assessment
Time Frame: Baseline to Week 10
To explore the effects of MAR002 on acromegaly symptoms
Baseline to Week 10
Change from baseline in ring size
Time Frame: Baseline to Week 10
To explore the effects of MAR002 on acromegaly symptoms
Baseline to Week 10

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Marea Therapeutics

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

July 1, 2026

Primary Completion (Estimated)

August 1, 2027

Study Completion (Estimated)

December 1, 2027

Study Registration Dates

First Submitted

May 26, 2026

First Submitted That Met QC Criteria

June 8, 2026

First Posted (Actual)

June 11, 2026

Study Record Updates

Last Update Posted (Actual)

June 11, 2026

Last Update Submitted That Met QC Criteria

June 8, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • MAR-202

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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