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A Study to Assess the Efficacy and Safety of Debio 4126 in Participants With Acromegaly Previously Treated With Somatostatin Analogs

A Phase 3 Randomized 3-arm Trial (Double-blind Debio 4126, Placebo Control, and Open-label Debio 4126), to Assess the Efficacy and Safety of Debio 4126, a 12-week Octreotide Formulation, in Patients With Acromegaly Previously Treated With Somatostatin Analogs

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06930625
Acronym
OXTEND™-03
Enrollment
119
Registered
2025-04-16
Start date
2025-11-26
Completion date
2029-03-01
Last updated
2026-08-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Acromegaly

Keywords

IGF-1, Growth hormone, Pituitary gland, Gigantism

Brief summary

The primary purpose of this study is to assess the effect of Debio 4126 in the maintenance of the levels of insulin-like growth factor 1 (IGF-1) ≤1x upper limit of normal (ULN) in the double-blind period (Period 1) in comparison to placebo at week 36.

Interventions

IM injection, a 12-week extended-release formulation of octreotide

DRUGPlacebo

IM injection of mannitol suspension

Sponsors

Debiopharm International SA
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Caregiver)

Masking description

Arms A and B: Period 1 (Double-blind) and Period 2 (Open-label). Arm C: Open-label.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Patients ≥18 years of age 2. Patients who are receiving octreotide or lanreotide monotherapy for acromegaly for at least 6 months, at a stable dose for the last 12 weeks. 3. IGF-1 at screening ≤1x ULN 4. Acromegaly diagnosis, defined as per protocol 5. Adequate bone marrow, hepatic and renal function 6. To enter Period 2 (Arms A and B): IGF-1 ≤1x ULN at Week 34, or up to Week 48 when treated with rescue medication 7. Other protocol-defined criteria apply

Exclusion criteria

1. Compression of optic chiasm causing visual defects 2. Symptomatic cholelithiasis or bile duct dilatation 3. Planned cholecystectomy during the trial duration 4. Acute or chronic pancreatitis 5. Pituitary radiotherapy 6. Uncontrolled hypothyroidism 7. Uncontrolled diabetes 8. Pituitary surgery within 6 months before screening or planned on trial 9. Treatment with pasireotide within 6 months prior to screening, pegvisomant or dopamine agonists within 3 months prior to screening 10. Recent or ongoing cardiovascular or thromboembolic diseases including heart failure, myocardial infarction, stroke, certain arrythmias, pulmonary embolism 11. Other protocol-defined criteria apply

Design outcomes

Primary

MeasureTime frame
Double-blind Period: Percentage of Participants With IGF-1 ≤1x ULN36 Weeks

Secondary

MeasureTime frame
Local Tolerability of Debio 4126 as Assessed by Erythema, Swelling, and Induration at the Injection Site Using Investigator AssessmentUp to 108 Weeks
Double-blind Period: Percentage of Participants Taking Rescue MedicationUp to 36 Weeks
Arm C: Percentage of Participants With IGF-1 ≤1x ULN36 Weeks
Percent Change From Baseline in IGF-1 ValuesUp to 108 Weeks
Percentage of Participants With IGF-1 ≤1x ULNUp to 108 Weeks
Percentage of Participants With Growth Hormone (GH) Level <1 ng/mLUp to 108 Weeks
Double-blind Period: Percentage of Participants Who Experienced at Least One Treatment-Emergent Adverse Event (TEAE)Up to 36 Weeks
Percentage of Participants Who Experienced at Least One TEAEUp to 113 Weeks
Local Tolerability of Debio 4126 as Assessed by Pain at Injection Site Based on Pain Visual Analog Scale (VAS) ScoreUp to 108 Weeks
Trough Plasma Concentration (Ctrough) of Debio 4126Up to 96 Weeks

Countries

Austria, Belgium, Brazil, Bulgaria, Denmark, Estonia, France, Germany, Hungary, Israel, Italy, Latvia, Lithuania, Poland, Romania, Serbia, Slovakia, Spain, Sweden, United Kingdom, United States

Contacts

CONTACTDebiopharm International S.A
clinicaltrials@debiopharm.com+41 21 321 01 11

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 25, 2026