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CTRI Number  CTRI/2024/10/075695 [Registered on: 23/10/2024] Trial Registered Prospectively
Last Modified On: 15/10/2024
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Other 
Public Title of Study   Phase 2A Study of Luspatercept in Pediatric Participants With Beta (β)-Thalassemia 
Scientific Title of Study   A Phase 2A Study To Evaluate The Safety And Pharmacokinetics Of Luspatercept (ACE-536) In Pediatric Participants With Beta (β)Thalassemia  
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
ACE-536-B-THAL-004_Protocol Amendment 3.1 dated 27Mar2024  Protocol Number 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name   
Designation   
Affiliation   
Address 




 
Phone    
Fax    
Email    
 
Details of Contact Person
Scientific Query
 
Name  Rashmi Chitgupi  
Designation  Country Head - Clinical Management 
Affiliation  PPD Pharmaceutical Development India Private Limited  
Address  PPD Pharmaceutical Development India Private Limited, 102, A Wing, Fulcrum, Hiranandani Business Park, Sahar Road, Andheri East,

Mumbai
MAHARASHTRA
400099
India 
Phone  02266022900  
Fax  912266022999  
Email  rashmi.chitgupi@ppd.com  
 
Details of Contact Person
Public Query
 
Name  Rashmi Chitgupi  
Designation  Country Head - Clinical Management 
Affiliation  PPD Pharmaceutical Development India Private Limited  
Address  PPD Pharmaceutical Development India Private Limited, 102, A Wing, Fulcrum, Hiranandani Business Park, Sahar Road, Andheri East,


MAHARASHTRA
400099
India 
Phone  02266022900  
Fax  912266022999  
Email  rashmi.chitgupi@ppd.com  
 
Source of Monetary or Material Support  
Celgene Corporation 86 Morris Avenue Summit, NJ 07901 
 
Primary Sponsor  
Name  Celgene Corporation 
Address  86 Morris Avenue Summit, NJ 07901 
Type of Sponsor  Pharmaceutical industry-Global 
 
Details of Secondary Sponsor  
Name  Address 
Nil   
 
Countries of Recruitment     China
Germany
Greece
India
Italy
Lebanon
Thailand
Turkey
United States of America  
Sites of Study  
No of Sites = 6  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Aby Abraham  Christian Medical College Vellore   Dept of Haematology, A Block, 6th Floor, CMC Vellore- Ranipet Campus, Kilminnal Village, Ranipet District, Tamilnadu- 632 517, India
Vellore
TAMIL NADU 
914172224553

aby@cmcvellore.ac.in 
Dr Suman Jain  Kamala Hospital and Research Centre for Thalassemia and Sickle Cell Patients   A Unit of Thalassemia and Sickle Cell Society Dr No. 8-13-95/1/C, Opp Lane to National Police Academy, Raghavendra Colony, Shivarampally,Rajendranagar mandal 500052
Hyderabad
TELANGANA 
9989706399

sumanjaindr@gmail.com 
Dr Riya Ballikar   KIMS Kingsway Hospitals   PANV Medisearch Lifesciences Private Limited Parwana Bhawan, Near Kasturchand Park Maharashtra - 440001, India
Nagpur
MAHARASHTRA 
7620963383

riabalikar86@gmail.com 
Dr Mamta Manglani   MCGM - Comprehensive Thalassemia Care, Pediatric Hematology-Oncology and BMT Centre   CCI Compound, Opp. Kanakia Exotica, Borivali East, Mumbai Suburban, Maharashtra -400066
Mumbai
MAHARASHTRA 
919821322071

mmanglani@hotmail.com 
Dr Prosanto Chowdhury  Peerless Hospitex Hospital and Research center limited  Panchasayar, Kolkata- 700094
Kolkata
WEST BENGAL 
9830055287

drprosanto.chowdhury@gmail.com 
Dr Nita Radhakrishnan  Post Graduate Institute of Child Health   Department of Pediatric Hematology and Oncology, Sector 30, Noida, Gautam Buddha Nagar, Uttar Pradesh-201303, India
Gautam Buddha Nagar
UTTAR PRADESH 
9999041524

nitark@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 6  
Name of Committee  Approval Status 
Clinical Research Ethics Committee Peerless Hospitex Hospital & Research Center Ltd  Approved 
Institutional Ethics Committee of CTC, PHO and BMT Centre   Submittted/Under Review 
Institutional Ethics Committee Super Speciality Pediatric Hospital & PGTI   Submittted/Under Review 
Institutional Review Board, Christian Medical College  Submittted/Under Review 
Kingsway Hospitals Ethics Committee   Submittted/Under Review 
PH Health Ethics Committee, PI Health Cancer Hospital   Submittted/Under Review 
 
Regulatory Clearance Status from DCGI  
Status 
Approved/Obtained 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: D561||Beta thalassemia,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Luspatercept (ACE-536)  Luspatercept is a recombinant fusion protein consisting of a modified form of the extracellular domain (ECD) of the human activin receptor IIB (ActRIIB) linked to the human immunoglobulin G1 (IgG1) fragment crystallizable (Fc) domain. Luspatercept is a homodimeric protein comprised of 2 disulfide-linked polypeptide chains, each with 335 amino acids. Each polypeptide chain contains 3 sites for N-linked glycosylation (total of 6 N-linked glycosylation sites per molecule). Peptide mapping and oligosaccharide analysis of luspatercept confirms the presence of highly branched N-linked glycans, typical of a recombinant protein produced in Chinese hamster ovary cells. 
Comparator Agent  NIL  NIL 
 
Inclusion Criteria  
Age From  6.00 Year(s)
Age To  18.00 Year(s)
Gender  Both 
Details  Participants must satisfy the following criteria to be enrolled into the study:
1) Participant must be 6 years to less than 18 years of age at the time of signing the informed consent
form ICF or informed assent form IAF.
2) Participant (and when applicable, parent/legal representative) must understand and voluntarily sign an ICF/IAF prior to conducting any study-related assessments/procedures.
3) Participant (and when applicable, parent/legal representative) is willing and able to adhere to the study visit schedule and other protocol requirements.
4) Participant must have documented diagnosis of β-thalassemia or HbE/β-thalassemia.
5) Transfusion dependence:
a) TD participant
i) Participant is regularly transfused, defined as: ≥ 4 RBC transfusion events in the
24 weeks prior to enrollment with no transfusion-free period ≥ 42 days during that
period.
Note For the purpose of the study, transfusions administered over 2 or 3 consecutive days are
considered as part of a single transfusion event. Participant must have a history of regular
transfusions for at least 2 years.
b) NTD participant ex-US sites only
i) Participant must have received less than 4 RBC transfusion events in the 24 weeks prior to
enrollment.
ii) Participant must not be on a regular transfusion program and must be RBC
transfusion-free for at least 8 weeks prior to enrollment.
iii) Participant must have mean baseline hemoglobin less than or equal to 10 g/dL, based on a minimum of 2 measurements greater than or equal to 1 week apart within 4 weeks prior to enrollment; hemoglobin values within 21 days post-transfusion will be excluded.
6) Participant has Karnofsky age greater than or equal to 16 years or Lansky age less than 16 years performance status score greater than or equal to 50 at screening.
7) Female children of childbearing potential (FCCBP), females of childbearing potential (FCBP), and male participants that have reached puberty (and when applicable, parent/legal representative) must agree to undergo physician-approved reproductive education and discuss the side effects of the study therapy on reproduction.
8) Female children of childbearing potential, defined as females who have achieved menarche and/or breast development in Tanner Stage 2 or greater and have not undergone a hysterectomy or bilateral oophorectomy and FCBP defined as a sexually mature woman who has achieved menarche at some point, has not undergone a hysterectomy or bilateral oophorectomy and has not been naturally postmenopausal for at least 24 consecutive months (ie, has had menses at any time in the preceding 24 consecutive months) must meet the following conditions below (Note: Secondary amenorrhea from any cause does not rule out childbearing potential):
• Medically supervised serum pregnancy tests with a sensitivity of at least 25 mIU/mL must be conducted in FCCBP/FCBP, including those who commit to complete abstinence. Female children of childbearing potential/FCBP must have 2 negative pregnancy tests as verified by the Investigator prior to starting study therapy (one of these tests should be performed by central laboratory). Female children of childbearing potential/FCBP must agree to ongoing pregnancy testing during the course of the study at the EOT visit and at the 9 week Safety Follow-up visit.
• Female participants must, as appropriate to age and at the discretion of the site Investigator, either commit to true abstinence from heterosexual contact (which must be reviewed on a monthly basis) or agree to use, and be able to comply with, effective contraception without interruption, 28 days prior to starting IP, during the study therapy (including dose interruptions), and for 12 weeks (approximately 5 times the mean terminal t1/2 of luspatercept based on multiple-dose PK data) after discontinuation of study therapy.
9) Male participants, as appropriate to age and the discretion of the study physician:
• Must practice true abstinence(which must be reviewed on a monthly basis) or agree to use a synthetic or latex condom during sexual contact with a pregnant female or a FCCBP/FCBP while participating in the study, during dose interruptions and for at least 12 weeks (approximately 5 times the mean terminal t1/2 of luspatercept based on multiple-dose PK data) following IP discontinuation, even if he has undergone a successful vasectomy.  
 
ExclusionCriteria 
Details  1) Participant has any significant medical condition, laboratory abnormality, or psychiatric illness
that would prevent the participant from participating in the study.
2) Participant has any condition including the presence of laboratory abnormalities, which places
the participant at unacceptable risk if he/she were to participate in the study.
3) Participant has any condition that confounds the ability to interpret data from the study.
4) Participant has a diagnosis of Hemoglobin S/beta-thalassemia or alpha -thalassemia
(eg, Hemoglobin H); beta-thalassemia combined with alpha-thalassemia is allowed.
5) Participant has active hepatitis C (HCV) infection as demonstrated by a positive
HCV-ribonucleic acid (RNA) test of sufficient sensitivity, or active infectious hepatitis B as
demonstrated by the presence of hepatitis B surface antigen (HBsAG) and/or hepatitis B virus
(HBV)-deoxyribonucleic acid (DNA) positive, or known positive human immunodeficiency
virus (HIV).
Note: Participants receiving antiviral therapies should have 2 negative HCV-RNA tests 3 months apart before ICF/IAF signature, ie, one test at the end of the antiviral therapy and the second test 3 months following the first test.
6) Participant has severe infection less than equal to 28 days prior to enrollment. Additionally, in the case of prior SARS-CoV-2 infection, symptoms must have completely resolved, and based on Investigator
assessment in consultation with the Clinical Trial Physician, there are no sequelae that would
place the participant at a higher risk of receiving investigational treatment.
7) Participant has received a live COVID-19 vaccine less than equal to 28 days prior to screening.
8) Participant has deep vein thrombosis (DVT), stroke, or other thromboembolic event(s) (except
clogged indwelling catheter) requiring medical intervention less than equal to 24 weeks prior to enrollment.
9) Participant has chronic anticoagulant therapy less than equal to 28 days prior to enrollment (Anticoagulant
therapies used for prophylaxis for surgery or high risk procedures as well as low molecular
weight [LMW] heparin for superficial vein thrombosis and chronic aspirin are allowed)
10) Participant has platelet count greater than 1000 x 10 raise to 9/L.
11) Participant has poorly controlled diabetes mellitus within 24 weeks prior to enrollment as
defined by short term (eg, hyperosmolar or ketoacidotic crisis) and/or history of diabetic
cardiovascular complications (eg, stroke or myocardial infarction).
12) Participant has treatment with another investigational drug or device less than equal to 28 days prior to
enrollment.
13) Participant has prior exposure to sotatercept (ACE-011) or luspatercept (ACE-536).
14) Participant underwent or is scheduled for HSCT or gene therapy.
15) Participant has used an erythropoiesis-stimulating agent (ESA) less than equal to 24 weeks prior to enrollment.
16) Participant use of iron chelation therapy (ICT), if initiated less than equal to 8 weeks prior to enrollment
(allowed if initiated more than 8 weeks before or during treatment).
17) Participant use of hydroxyurea treatment less than equal to 24 weeks prior to enrollment.
18) Participant is pregnant or breastfeeding female.
19) Participant has uncontrolled hypertension. Controlled hypertension for this protocol is
considered less than equal to Grade 1 according to NCI CTCAE version 5.0.
20) Participant has major organ damage, including:
a) Symptomatic splenomegaly
b) Liver disease with alanine aminotransferase (ALT)/aspartate aminotransferase (AST) more than 3×
the upper limit of normal (ULN) for age
c) Heart disease, heart failure as classified by the New York Heart Association (NYHA)
classification 3 or higher, or significant arrhythmia requiring treatment, or recent
myocardial infarction within 6 months of enrollment
d) Lung disease, including pulmonary fibrosis or pulmonary hypertension which are clinically
significant.
e) Renal insufficiency defined as:
A serum creatinine based on age/gender as described below:
6 to less than 10 Years: Male and Female less than 1
10 to less than 13 Years: Male and Female less than 1.2
13 to lest 16 years: Male less than 1.5 and Female less than 1.4
more than or equal to 16 Years: Male less than 1.7 and Female less than 1.4
21) Participant has proteinuria less than equal to Grade 3 according to NCI CTCAE version 5.0. (which is
equivalent to a urine protein/creatinine ratio less than 215 mg/mmol of creatinine), or a urine
albumin/creatinine ratio less than 129 mg/mmol of creatinine.
22) Participant use of chronic systemic glucocorticoids less than equal to 12 weeks prior to enrollment
(physiologic replacement therapy for adrenal insufficiency is allowed). Single day
glucocorticoid treatment (eg, for prevention or treatment of transfusion reactions) is allowed.
23) Participant has major surgery less than equal to 12 weeks prior to enrollment (participants must have
completely recovered from any previous surgery prior to enrollment).
24) Participant has history of severe allergic or anaphylactic reactions or hypersensitivity to
recombinant proteins or excipients in the IP (refer to the IB).
25) Participant use of cytotoxic agents, immunosuppressants or immunomodulatory imide drugs
(IMiDs) less than equal to 28 days prior to enrollment (ie, antithymocite globulin [ATG] or cyclosporine or
thalidomide).
26) Participant has history of malignancy with the exception of:
a) Curatively resected nonmelanoma skin cancer.
b) Curatively treated cervical carcinoma in situ.
c) Other solid tumor with no known active disease in the opinion of the Investigator.
27) Participant who has EMH complications or requires treatment to control the growth of EMH
masse(s) during the screening period. 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Open Label 
Primary Outcome  
Outcome  TimePoints 
• To determine the recommended dose (RD) of luspatercept that is safe and tolerable in pediatric participants with transfusion-dependent (TD) or non-transfusion-dependent (NTD) β-thalassemia
• To evaluate the pharmacokinetics (PK) of luspatercept in pediatric participants with TD or NTD β-thalassemia
 
• Cycle 1 Day 1 up to maximum 1 year post Cycle 1 Day 1
• Cycle 1 Day 1 up to maximum 1 year post Cycle 1 Day 1
 
 
Secondary Outcome  
Outcome  TimePoints 
For TD & NTD β-thalassemia Participants:
• The safety of luspatercept in pediatric participants
• The immunogenicity of luspatercept
• The mean change in mean daily dose of iron chelation therapy (ICT)
• The mean change in serum ferritin
For TD β-thalassemia Participants:
• The mean change in red blood cell (RBC) transfusion burden
For NTD β-thalassemia Participants:
• The mean change in hemoglobin levels. 
• 12 weeks prior to enrollment 
 
Target Sample Size   Total Sample Size="99"
Sample Size from India="50" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   Phase 2 
Date of First Enrollment (India)   02/12/2024 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  04/08/2021 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="8"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)   Open to Recruitment 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary  
This is a Phase 2a study to evaluate the safety and PK of luspatercept in pediatric participants with
β-thalassemia and to determine the RD.
The study will consist of the following periods:
  • Screening/Run-in Period
  • Treatment Period
  • Long-term Treatment Period
  • Post-treatment Follow-up Period
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. 
 
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