THU070 Randomized, Placebo-controlled Phase 3 Trial Protocol Assessing The Efficacy And Safety Of Octreotide Subcutaneous Depot (CAM2029) In Patients With Acromegaly

Abstract Disclosure: D. Ferone: Advisory Board Member; Self; Recordati, Novartis-AAA, Sandoz, Camurus. Grant Recipient; Self; Bristol-Myers Squibb, Novartis-AAA, Ipsen, Camurus. Research Investigator; Self; Camurus. P. Freda: Research Investigator; Self; Camurus. L. Katznelson: Advisory Board Member; Self; Recordati, Camurus, Amryt. Research Investigator; Self; Camurus. F. Gatto: Research Investigator; Self; Camurus. A. Gilis-Januszewska: Research Investigator; Self; Camurus. M.B. Gordon: Advisory Board Member; Self; Camurus, Crinetics, HRA Pharma, Novo Nordisk, Recordati. Grant Recipient; Self; Amryt, Ascendis, Camurus, Corcept, Crinetics, Ipsen, Novartis Pharmaceuticals, Novo Nordisk, Opko, Pfizer, Inc., Strongbridge. Research Investigator; Self; Camurus. P. Kadioglu: Research Investigator; Self; Camurus. P. Maffei: Research Investigator; Self; Camurus. J.R. Seufert: Research Investigator; Self; Camurus. J. Silverstein: Advisory Board Member; Self; Amryt, Recordati. Research Investigator; Self; Camurus. J.L. Spencer-Segal: Grant Recipient; Self; Camurus. Research Investigator; Self; Camurus. M. Harrie: Employee; Self; Camurus. A. Svedberg: Employee; Self; Camurus. F. Tiberg: Employee; Self; Camurus. Extended-release formulations of the somatostatin analogues (SSAs), octreotide and lanreotide, are first-line medical therapies for patients with acromegaly who have contraindications for, or are not cured by, surgical intervention and/or radiotherapy. Treatment goals, regardless of modality, include biochemical normalization of insulin-like growth factor 1 (IGF-1) and growth hormone (GH), symptom relief, tumor control, and maintenance of pituitary function. From the patient perspective, treatment satisfaction, autonomy, and quality of life may be as important as biochemical control. Constraints of current SSA formulations include incomplete biochemical and symptom control, and a lack of convenient self-administration options. Octreotide subcutaneous (SC) depot (CAM2029) is a novel FluidCrystal® formulation of octreotide designed for easy administration by patients, in a ready-to-use prefilled syringe or injection pen. In previous clinical trials, CAM2029 provided more than five-fold higher bioavailability compared to the currently marketed long-acting octreotide formulation.The efficacy and safety of CAM2029 in acromegaly is being evaluated in a 6-month, randomized, double-blind, placebo-controlled phase 3 trial (NCT04076462). 72 patients were randomized 2:1 to monthly SC doses of CAM2029 20 mg or placebo, with the option for self-administration. Key inclusion criteria included a biochemical and clinical diagnosis of acromegaly due to a pituitary adenoma with persistent or recurrent disease, treatment with a stable dose of octreotide long-acting release or lanreotide Autogel for at least 3 months as monotherapy, and controlled disease with IGF-1 ≤1 x upper limit of normal (ULN). Key exclusion criteria included GH ≥2.5 μg/L at screening, pituitary surgery within 6 months of screening, prior pituitary irradiation, and recent treatment with pasireotide, pegvisomant, or dopamine agonists. The primary endpoint is the proportion of patients with normalized IGF-1 (≤1 x ULN) after 6 months of treatment. Other endpoints include change from baseline of IGF-1, GH and patient-reported outcomes (Treatment Satisfaction Questionnaire for Medication, Self-Injection Assessment Questionnaire, Acromegaly Quality of Life Questionnaire, EQ-5D-5L), safety and tolerability, clinical signs and symptoms of acromegaly, use of rescue medication and octreotide pharmacokinetics. The estimated primary completion date for the trial is May 2023. After completing study treatment, patients may switch to open-label treatment in a phase 3 long-term safety and extension trial of CAM2029 (NCT04125836). Presentation: Thursday, June 15, 2023