Study of Safety & PK of Luspatercept (ACE-536) in Pediatric Participants Who Require Regular RBC Transfusions Due to Beta (β)-Thalassemia.
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ClinicalTrials.gov Identifier: NCT04143724 |
Recruitment Status :
Recruiting
First Posted : October 29, 2019
Last Update Posted : February 13, 2023
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Tracking Information | |||||||||||||||||||||
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First Submitted Date ICMJE | October 2, 2019 | ||||||||||||||||||||
First Posted Date ICMJE | October 29, 2019 | ||||||||||||||||||||
Last Update Posted Date | February 13, 2023 | ||||||||||||||||||||
Actual Study Start Date ICMJE | November 7, 2019 | ||||||||||||||||||||
Estimated Primary Completion Date | June 30, 2026 (Final data collection date for primary outcome measure) | ||||||||||||||||||||
Current Primary Outcome Measures ICMJE |
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Original Primary Outcome Measures ICMJE |
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Current Secondary Outcome Measures ICMJE |
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Original Secondary Outcome Measures ICMJE |
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Current Other Pre-specified Outcome Measures | Not Provided | ||||||||||||||||||||
Original Other Pre-specified Outcome Measures | Not Provided | ||||||||||||||||||||
Descriptive Information | |||||||||||||||||||||
Brief Title ICMJE | Study of Safety & PK of Luspatercept (ACE-536) in Pediatric Participants Who Require Regular RBC Transfusions Due to Beta (β)-Thalassemia. | ||||||||||||||||||||
Official Title ICMJE | A Phase 2a Study to Evaluate the Safety and Pharmacokinetics of Luspatercept (ACE-536) in Pediatric Participants Who Require Regular Red Blood Cell Transfusions Due to Beta (β)-Thalassemia | ||||||||||||||||||||
Brief Summary | This is a Phase 2a study to evaluate the safety and pharmacokinetics (PK) of luspatercept in pediatric participants who require regular red blood cell transfusions due to β-thalassemia. The study will be conducted in 2 parts: Part A will be in adolescent participants aged 12 to <18 years with two dose escalation cohorts of 6 participants each, followed by a dose expansion cohort of 30 participants. Part B will begin after a review of the safety in participants completing at least one year of treatment in Part A and will be in participants aged 6 to <12 with two dose escalation cohorts of 6 participants each. Upon completion of the Treatment Period, participants of any cohort who are benefiting from the study treatment, will be offered the opportunity to continue luspatercept treatment in the Long-term Treatment Period for up to 5 years from their first dose (Cycle 1 Day 1). Participants who discontinue study treatment at any time will continue in the Posttreatment Follow-up Period for at least 5 years from their first dose of luspatercept (Cycle 1 Day 1), or 3 years from their last dose, whichever occurs later, or until they withdraw consent/assent, are lost to follow-up, or the End of Trial, whichever occurs first. |
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Detailed Description | This is a Phase 2a study to evaluate the safety and pharmacokinetics (PK) of luspatercept in pediatric participants who require regular red blood cell (RBC) transfusions due to β-thalassemia and to determine the recommended dose (RD). The primary endpoints are the determination of the RD and PK parameters (including Cmax, AUC, t1/2, CL/F and Vd/F). The secondary endpoints include the safety of luspatercept in pediatric participants, the immunogenicity (frequency of antidrug antibodies) of luspatercept, mean change in RBC transfusion burden, mean change in hemoglobin levels, mean change from baseline in mean daily dose of iron chelation therapy (ICT), and mean change from baseline in serum ferritin. The study will consist of the following periods:
Participant screening procedures will occur during the Screening/Run-in Period, within 12 weeks prior to the start of study treatment. Participants who meet the study eligibility criteria will be enrolled into the Treatment Period. The study will be conducted in a staggered manner, in descending order of age, with 2 parts as described below. Part A Adolescent participants aged 12 to < 18 years: Luspatercept 0.75 will be enrolled as outlined below: Part A Dose Escalation Phase Part A Dose Escalation Phase will explore up to 2 dose levels of luspatercept, 0.75 mg/kg and 1.0 mg/kg, to evaluate the safety and tolerability of luspatercept in this age group and determine the RD to be used for Part A Expansion Phase:
Part A Expansion Phase • Cohort 3 - The Expansion Cohort: 30 adolescent participants (12 to < 18 years of age) receiving luspatercept at the RD for up to 12 months in the Treatment Period. Part B Children from 6 years to < 12 years of age will be enrolled into Part B as outlined below: Part B Dose Escalation Phase will explore 2 dose levels of luspatercept, 1.0 mg/kg and 1.2 mg/kg, to evaluate the safety and tolerability of luspatercept in this age group and determine the RD.
During the Treatment Period of both Part A Dose Escalation Phase and Part B Dose Escalation Phase, once all 6 participants in a dose escalation cohort have completed the first cycle (Study Day 22), the Dose Review Team (DRT), will review all available safety data, including dose-limiting toxicities (DLTs), adverse events (AEs), serious adverse events (SAEs), and laboratory results (including hematology and chemistry) reported during Cycle 1 of each dose level. A DLT, using the current active version of the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 5.0, is defined as any of the following toxicities at any dose level occurring within 21 days of the first administered dose:
The DRT will make a recommendation as to whether or not to enroll the next cohort at the next planned dose level based in part upon the following criteria:
At least 6 participants eligible for the Dose Determining Set (DDS) are planned to be enrolled per dose escalation cohort with up to 2 cohorts per age group. With up to 2 age groups being considered, a total of up to 24 participants are to be included in the DDS. To minimize safety risk to participants, best supportive care will be available, including RBC transfusions, iron-chelating agents, use of antibiotic therapy, antiviral and antifungal therapy, and/or nutritional support as needed. |
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Study Type ICMJE | Interventional | ||||||||||||||||||||
Study Phase ICMJE | Phase 2 | ||||||||||||||||||||
Study Design ICMJE | Allocation: Non-Randomized Intervention Model: Sequential Assignment Masking: None (Open Label) Primary Purpose: Treatment |
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Condition ICMJE | Beta-Thalassemia | ||||||||||||||||||||
Intervention ICMJE |
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Study Arms ICMJE |
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Publications * | Not Provided | ||||||||||||||||||||
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline. |
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Recruitment Information | |||||||||||||||||||||
Recruitment Status ICMJE | Recruiting | ||||||||||||||||||||
Estimated Enrollment ICMJE |
54 | ||||||||||||||||||||
Original Estimated Enrollment ICMJE |
48 | ||||||||||||||||||||
Estimated Study Completion Date ICMJE | November 17, 2026 | ||||||||||||||||||||
Estimated Primary Completion Date | June 30, 2026 (Final data collection date for primary outcome measure) | ||||||||||||||||||||
Eligibility Criteria ICMJE | Inclusion Criteria: Participants must satisfy the following criteria to be enrolled into the study:
Exclusion Criteria: The presence of any of the following will exclude a participant from enrollment into the study:
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Sex/Gender ICMJE |
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Ages ICMJE | 6 Years to 18 Years (Child, Adult) | ||||||||||||||||||||
Accepts Healthy Volunteers ICMJE | No | ||||||||||||||||||||
Contacts ICMJE |
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Listed Location Countries ICMJE | Germany, Greece, Italy, Thailand, Turkey, United States | ||||||||||||||||||||
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Administrative Information | |||||||||||||||||||||
NCT Number ICMJE | NCT04143724 | ||||||||||||||||||||
Other Study ID Numbers ICMJE | ACE-536-B-THAL-004 U1111-1241-4168 ( Other Identifier: WHO ) 2019-000208-13 ( EudraCT Number ) |
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Has Data Monitoring Committee | Yes | ||||||||||||||||||||
U.S. FDA-regulated Product |
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IPD Sharing Statement ICMJE |
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Current Responsible Party | Celgene | ||||||||||||||||||||
Original Responsible Party | Same as current | ||||||||||||||||||||
Current Study Sponsor ICMJE | Celgene | ||||||||||||||||||||
Original Study Sponsor ICMJE | Same as current | ||||||||||||||||||||
Collaborators ICMJE | Acceleron Pharma Inc. (a wholly owned subsidiary of Merck Sharp and Dohme, a subsidiary of Merck & Co., Inc.) | ||||||||||||||||||||
Investigators ICMJE |
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PRS Account | Celgene | ||||||||||||||||||||
Verification Date | February 2023 | ||||||||||||||||||||
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |