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CTRI Number  CTRI/2023/01/049275 [Registered on: 30/01/2023] Trial Registered Prospectively
Last Modified On: 24/02/2025
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Randomized, Parallel Group, Placebo Controlled Trial 
Public Title of Study   Research study investigating how well NDec works in people with sickle cell disease 
Scientific Title of Study   A multicentre trial evaluating the efficacy and safety of oral decitabine-tetrahydrouridine (NDec) in patients with sickle cell disease 
Trial Acronym  ASCENT 1 (NN7533-4470) 
Secondary IDs if Any
Modification(s)  
Secondary ID  Identifier 
2020-003485-39  EudraCT 
NCT05405114  ClinicalTrials.gov 
NN7533-4470 version 7.0 dated 11-Sep-2023  Protocol Number 
U1111-1255-1324  UTN 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name   
Designation   
Affiliation   
Address 




 
Phone    
Fax    
Email    
 
Details of Contact Person
Scientific Query

Modification(s)  
Name  Dr Maya Sharma 
Designation  Vice President - Clinical, Medical, Regulatory & Pharmacovigilance 
Affiliation  Novo Nordisk India Private Ltd 
Address  Novo Nordisk India Private Limited, Nxt Tower - 2 Floor 1 & 2 Embassy Manyata Business Park Nagavara Village Kasaba Hobli Bangalore – 560045 India
Novo Nordisk India Private Limited, Nxt Tower - 2 Floor 1 & 2 Embassy Manyata Business Park Nagavara Village Kasaba Hobli Bangalore – 560045 India
Bangalore
KARNATAKA
560045
India 
Phone  9911497869  
Fax  080-41123518  
Email  yrms@novonordisk.com  
 
Details of Contact Person
Public Query

Modification(s)  
Name  Dr Maya Sharma 
Designation  Vice President - Clinical, Medical, Regulatory & Pharmacovigilance 
Affiliation  Novo Nordisk India Private Ltd 
Address  Novo Nordisk India Private Limited, Nxt Tower - 2 Floor 1 & 2 Embassy Manyata Business Park Nagavara Village Kasaba Hobli Bangalore – 560045 India
Novo Nordisk India Private Limited, Nxt Tower - 2 Floor 1 & 2 Embassy Manyata Business Park Nagavara Village Kasaba Hobli Bangalore – 560045 India
Bangalore
KARNATAKA
560045
India 
Phone  9911497869  
Fax  080-41123518  
Email  yrms@novonordisk.com  
 
Source of Monetary or Material Support
Modification(s)  
Novo Nordisk A/S, Novo Allé, 2880 Bagsvaerd Denmark 
 
Primary Sponsor
Modification(s)  
Name  Novo Nordisk India Private Limited 
Address  Nxt Tower - 2, Floor 1 & 2, Embassy Manyata Business Park, Nagavara Village, Kasaba Hobli, Bangalore - 560045. India Tel No.: 080-40303200 
Type of Sponsor  Pharmaceutical industry-Global 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment
Modification(s)  
  Greece
India
South Africa
Spain
Turkey
Canada
France
United Kingdom
United States of America
Italy
Lebanon  
Sites of Study
Modification(s)  
No of Sites = 13  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Pankaj Kumar Kannauje   AIIMS Raipur  Department of General Medicine, Room no 413, D Block, 4th floor, Gate no 4, AIIMS Raipur, Tatibandh, GE Road, Raipur, Chhattisgarh – 492099, India
Raipur
CHHATTISGARH 
9752696488

drpankajkannauje@aiimsraipur.edu.in 
Dr Ashish Kantilal Singwala  BAPS Pramukh Swami Hospital  BAPS Pramukh Swami Hospital, Shri Pramukh Swami Maharaj Marg, Adajan Char Rasta, Adajan, Surat - 395009, Gujrat, India
Surat
GUJARAT 
9825178504

ashishsingwalabaps@gmail.com 
Dr Uday Prakash Kulkarni   Christian Medical College Vellore  Christian Medical College IDA Scudder Rd Sripuram Beripettai Vellore Tamil Nadu 632004
Vellore
TAMIL NADU 
04172-224482

kulkarni.uday@cmcvellore.ac.in 
Dr Atkar Chandrashekhar Madhukarrao  Government Medical College Nagpur  Government Medical College 43GW CR2 Hanuman Nagar Ajni Rd Medical Chowk Ajni Nagpur Maharashtra 440003
Nagpur
MAHARASHTRA 
7122701637

cmatkar92@gmail.com 
Dr Abdul Majeed K  Government Medical College, Kozhikode  Government Medical College, Medical College Junction, Mavoor Road, Medical College PO, Kozhikode-673008, Kerala, India
Kozhikode
KERALA 
9447311247

majeedonco@gmail.com 
Dr Priyanka Samal  Institute of Medical Sciences (IMS) and SUM Hospital  K8- Kalinganagar, Bhubaneswar, Odisha, 751003, India
Khordha
ORISSA 
8902621993

samalpriyanka80@gmail.com 
Dr Shrinath Kshirsagar  K.J Somaiya Hospital and Research Centre  K.J Somaiya Hospital and Research Centre, Somaiya Ayurvihar, Eastern Express Highway, Sion East, Mumbai - 400022, Maharashtra, India
Pune
MAHARASHTRA 
9821556030

shrinathk2000@gmail.com 
Dr Harshawardhan Bora  KIMS - Kingsway Hospital  KIMS - Kingsway Hospital, 44, Parwana Bhawan, Kingsway, Near Kasturchand Park, Nagpur - 440001, Maharashtra, India
Nagpur
MAHARASHTRA 
9822363585

harshwardhanbora@gmail.com 
Dr Dharmesh Rameshbhai Vaghasiya  Nirmal Hospital Pvt Ltd  Ring Road, Surat - 395002, Gujarat
Surat
GUJARAT 
7767054520

drdharmeshrvaghasiya@gmail.com 
Dr Tuphan Kanti Dolai  NRS Medical College & Hospital  NRS Medical College & Hospital, Haematology Department, 138 AJC Bose Road, Kolkata – 700014, West Bengal, India
Kolkata
WEST BENGAL 
9874890275

tkdolai@hotmail.com 
Dr Rabindra Kumar Jena   SCB Medical College & Hospital  Dept. Of Clinical Haematology, 1st Floor, Old Medicine Building, SCB Medical College & Hospital, Cuttack – 753007, Odisha, India
Cuttack
ORISSA 
9437022343

rkjena@msn.com 
Dr Rupal Vikas Dosi  SSG Hsopital  Clinical Study Room, 2nd Floor, New Emergency Building, SSG Hsopital, Medical College - Baroda, Jail Road, Vadodara - 390001, Gujarat, India
Vadodara
GUJARAT 
9824083734

ssghospital.ct@spearsmind.com 
Dr Meera V  Victoria Hospital (Bangalore Medical College & Research Institute)  Department of clinical Haematology, New OPD block 5 th floor, Victoria Hospital, Mysore Road near city market, near Thargupet Bangalore, Karnataka -560002
Bangalore
KARNATAKA 
9845134167

meerachakra@yahoo.com 
 
Details of Ethics Committee
Modification(s)  
No of Ethics Committees= 13  
Name of Committee  Approval Status 
BAPS Pramukh Swami Hospital Institutional Ethics Committee  Approved 
Ethics Committee NRS Medical College And Hospital   Approved 
Ethics Committee of BMCRI  Approved 
IEC, IMS and SUM Hospital IMS and SUM Hospital  Approved 
INSTITUTE ETHICS COMMITTEE, AIIMS RAIPUR  Approved 
Institutional Ethics Committee (IEC) Government Medical College and Hospital Nagpur  Approved 
Institutional Ethics Committee for Human Research Medical College  Approved 
Institutional Ethics Committee K.J Somaiya Medical College and Research Centre  Approved 
Institutional Ethics Committee, Government Medical College Kozhikode  Approved 
Institutional Ethics Committee, SCB Medical College & Hospital  Approved 
Institutional Review Board (Silver, Research and Ethics Committee)  Approved 
Kingsway Hospitals Ethics Committee  Approved 
Nirmal Hospital Ethics Committee  Approved 
 
Regulatory Clearance Status from DCGI
Modification(s)  
Status 
Approved/Obtained 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: D572||Sickle-cell/Hb-C disease,  
 
Intervention / Comparator Agent
Modification(s)  
Type  Name  Details 
Comparator Agent  HU - Hydroxyurea  Participants will get capsules daily (oral administration) according to local labelling 
Intervention  NDec - oral decitabine-tetrahydrouridine  Participants will get capsules (oral administration) to take once or twice weekly. The number of capsules will be based on their body weight 
Comparator Agent  Placebo  Participants will get capsules (oral administration) to take once or twice weekly. The number of capsules will be based on their body weight 
 
Inclusion Criteria
Modification(s)  
Age From  18.00 Year(s)
Age To  99.00 Year(s)
Gender  Both 
Details  1. Age above or equal to 18 years at the time of signing informed consent
2. Confirmed diagnosis of SCD (including HbSS, HbSC, HbS beta zero thalassaemia and HbS beta plus thalassaemia or other Sickle Cell disease variants)
3. 2-10 episodes of documented vaso-occlusive crisis (VOCs) within the last 12 months prior to the screening visit
4. Haemoglobin greater than or equal to 5.0 g/dL and below or equal to 10.5 g/dL at visit 1
5. Absolute reticulocyte count above upper limit of the normal (ULN) at visit 1
6. Body weight 40 to 125 kg (inclusive) 
 
ExclusionCriteria 
Details  1. Patient is on chronic transfusion therapy as defined by receiving scheduled (pre-planned) series of blood transfusion (simple or exchange) for prophylactic purposes, or the patient is likely to begin chronic transfusion therapy during the course of the trial, or has received RBC or whole blood transfusion for any reason within 28 days of visit 1
2. Receipt of erythropoietin or other haematopoietic growth factor treatment within 28 days of signing ICF, or planned treatment with these agents during the trial
3. Receipt of voxelotor, crizanlizumab or L-glutamine treatment within 12 weeks of signing the informed consent form, or planned treatment with such agents during the trial
4. Platelet count greater than 800 x 10 to the power of 9 per L at visit 1
5. Absolute neutrophil count below or equal to 1.5 x 10 to the power of 9 per L at visit 1
6. Any condition per concurrent chronic disease involving the stomach or small intestine which may affect drug absorption, as per investigators judgement
7. Female who is
  a. pregnant, breast-feeding or intends to become pregnant within 6 months after the final trial product administration
  b. child-bearing potential and not using highly effective methods of contraception and whose male partner is not using effective contraception, at screening and until 6 months after the last dose of trial product
8. Male with female partner of childbearing potential who does not agree to use condom and whose female partner of childbearing potential is not using a highly effective contraceptive measure from trial start to:
a. Six (6) months after the last dose of trial product for patients on NDec or Placebo
b. Six (6) months after the last dose of trial product for patients outside US and CA randomised to HU
c. Twelve (12) months after the last dose of trial product for patients randomised to HU in US and CA 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Centralized 
Blinding/Masking   Participant, Investigator, Outcome Assessor and Date-entry Operator Blinded 
Primary Outcome  
Outcome  TimePoints 
Change in total haemoglobin   [Time Frame: From baseline (week 0) to week 24] measured in g/dL 
 
Secondary Outcome  
Outcome  TimePoints 
Cmax for decitabine from pharmacokinetic assessment   [Time Frame: At week 24]
measured in ng/mL 
Cmax for tetrahydrouridine from pharmacokinetic assessment  [Time Frame: At week 24]
measured in ng/mL 
Change in DNA methyltransferase 1 (DNMT1) activity  [Time Frame: From baseline (week 0) to week 24]
measured in MFI units 
Change in cytidine deaminase (CDA) activity   [Time Frame: From baseline (week 0) to week 24]
µmol/L/min 
Change in foetal haemoglobin (g/dL)   [Time Frame: From baseline (week 0) to week 24]
measured in g/dL 
Change in foetal haemoglobin as a proportion of total haemoglobin (%HbF)   [Time Frame: From baseline (week 0) to week 24]
measured in % 
Change in F-cell level as a proportion of total red blood cell (RBC) (%F-cells)  [Time Frame: From baseline (week 0) to week 24]
measured in % 
Change in haemolysis measure: absolute reticulocyte count  [Time Frame: From baseline (week 0) to week 24]
measured in cells × 10000000000/L 
Change in haemolysis measure: indirect bilirubin  [Time Frame: From baseline (week 0) to week 24]
measured in mg/dL 
Change in haemolysis measure: lactate dehydrogenase  [Time Frame: From baseline (week 0) to week 24]
measured in U/L 
Number of vaso-occlusive crises   [Time Frame: From baseline (week 0) to week 48]
number of events 
Number of acute chest syndrome   [Time Frame: From baseline (week 0) to week 48]
number of events 
Number of RBC units transfused   [Time Frame: From baseline (week 0) to week 48]
measured in Units 
Number of adverse events of grade 3 or higher   [Time Frame: From baseline (week 0) to week 52]
number of events 
 
Target Sample Size
Modification(s)  
Total Sample Size="84"
Sample Size from India="45" 
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)
Modification(s)  
22/03/2023 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  07/07/2022 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial
Modification(s)  
Years="3"
Months="0"
Days="16" 
Recruitment Status of Trial (Global)
Modification(s)  
Closed to Recruitment of Participants 
Recruitment Status of Trial (India)  Closed to Recruitment of Participants 
Publication Details   Nil 
Individual Participant Data (IPD) Sharing Statement

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

Response - NO
Brief Summary
Modification(s)  

This study examines how well a new, potential medicine called NDec works and is tolerated in people with sickle cell disease. NDec is a combination of two medicines (decitabine-tetrahydrouridine). Both medicines are new for the treatment of sickle cell disease. Participants who are not taking Hydroxyurea (HU) will get NDec, NDec and placebo, or placebo. 

Participants who are on HU treatment before joining the study will get NDec, NDec and placebo, or continue on HU. Which treatment participants get is decided by chance. Participants getting NDec and/or Placebo will get capsules to take twice weekly. 

The study will last for about a year.

 
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