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CTRI Number  CTRI/2023/09/057398 [Registered on: 11/09/2023] Trial Registered Prospectively
Last Modified On: 06/03/2024
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Vaccine 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   A open label, active control, phase 2 clinical study to evaluate immunogenicity, safety and tolerability of single heterologous booster dose of Protein Subunit Vaccine against SARS-CoV-2 Virus. 
Scientific Title of Study   Prospective, multi-center, randomized, open label, active control, phase 2 clinical study to evaluate immunogenicity, safety and tolerability of single heterologous booster dose of RelCoVax® (Protein Subunit Vaccine of Reliance Life Sciences against SARS-CoV-2 Virus) with Corbevax® (Protein Subunit Vaccine of Biological E Ltd. against SARS-CoV-2 Virus)  
Trial Acronym  NA 
Secondary IDs if Any  
Secondary ID  Identifier 
Protocol No:RLS/VAC/2023/01; Version:3.0, Dated: 30 Jun 2023  Protocol Number 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Ajaykumar Yadav 
Designation  Head - Clinical Research (overall Trial Coordinator) 
Affiliation  Reliance Life Sciences Pvt. Ltd. (RLS) 
Address  Reliance Life Sciences Pvt. Ltd. (RLS) Dhirubhai Ambani Life Sciences Centre (DALC) Plot R 282 TTC Area of MIDC Thane Belapur Road Rabale, Navi Mumbai

Thane
MAHARASHTRA
400701
India 
Phone  9820804218  
Fax    
Email  Ajaykumar2.Yadav@relbio.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Sachin Kagane 
Designation  Medical Monitor 
Affiliation  Reliance Life Sciences Pvt. Ltd. (RLS) 
Address  Reliance Life Sciences Pvt. Ltd. (RLS), Dhirubhai Ambani Life Sciences Centre (DALC)R-282, TTC Area of MIDC, Thane - Belapur Road, Rabale, Navi Mumbai -

Thane
MAHARASHTRA
400701
India 
Phone  9987885679  
Fax    
Email  Sachin.Kagane@relbio.com  
 
Details of Contact Person
Public Query
 
Name  Vikram Jadhav 
Designation  Project Manager 
Affiliation  Reliance Life Sciences Pvt. Ltd. (RLS) 
Address  Reliance Life Sciences Pvt. Ltd. (RLS), Dhirubhai Ambani Life Sciences Centre (DALC)R-282, TTC Area of MIDC, Thane - Belapur Road, Rabale, Navi Mumbai

Thane
MAHARASHTRA
400701
India 
Phone  9948664283  
Fax    
Email  Vikram.Jadhav@relbio.com  
 
Source of Monetary or Material Support  
Reliance Life Sciences Pvt. Ltd. (RLS), Dhirubhai Ambani Life Sciences Centre(DALC), Plot R 282 TTC Area of MIDC, Thane Belapur Road Rabale, Navi Mumbai 400701, Maharashtra, India 
 
Primary Sponsor  
Name  Reliance Life Sciences Pvt Ltd RLS 
Address  Dhirubhai Ambani Life Sciences Centre (DALC), Plot R 282 TTC Area ofMIDC, Thane Belapur Road Rabale, Navi Mumbai 400 701, Maharashtra,India 
Type of Sponsor  Pharmaceutical industry-Indian 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study
Modification(s)  
No of Sites = 18  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Deepakkumar Langade  D.Y.Patil Medical College  5th Floor, Department of pharmacology, Plot no. 2, Sector 5, Nerul, Navi Mumbai - 400706, Maharashtra, India
Thane
MAHARASHTRA 
9930550009

deepak.langade@dypatil.edu 
DrAkash Khobragade  Grant Government Medical College and Sir J.J. Group of Hospitals  2nd floor, Department of Pharmacology, Grant Government Medical College and Sir J.J. Group of Hospitals, JJ Marg, Nagpada, Mumbai – 400008, Maharashtra, India
Mumbai
MAHARASHTRA 
9702658822

drakashk.research@gmail.com 
Dr ShrikantVishnuDeshpande  Ashirwad Hospital and research Centre  3rd Floor, Department of Clinical research, Near JijamataUdyan, MarathaSection Ulhasnagar,420004 Thane MAHARASHTRA
Thane
MAHARASHTRA 
9822017445

writetoshrikant@rediffmail.com 
DrPrachee Makashir  Bhrati Vidyapeeth (Deemed to be University) Medical College and Hospital  ground floor, Pediatric OPD Pune-Satara road, Pune - 4110577, Maharashtra, India
Pune
MAHARASHTRA 
9011073840

drprachee@gmail.com 
Dr Swapnil Sakhala  Chopda Medicare & Research Center Pvt. Ltd: Magnum Heart Institude,  3rd floor, Department of clinical research, Laxman Rekha Apartment 3/5, Patil Lane No.1, Laxmi Nagar, Near K.B.H. Vidyalaya, Canada Corner, Nashik - 4222005, Maharashtra India
Nashik
MAHARASHTRA 
9922718347

swapnilsakhala@yahoo.com 
Dr Ravindra Shinde  CIMETS Inamdar Multispeciality Hospital  S.No.15, Behind KPCT Mall, Fatima Nagar, Wanawwadi Pune, 411040,India
Pune
MAHARASHTRA 
9762748760

shinderb@yahoo.co.in 
Dr Shrikant Tripathy  Dr. D.y Patil Medical college and hospital and Research centre  Department of clinical research, 3rd floor, Old medical college Unit, Sant Tukaram Nagar Pimpri,Pune 411018
Pune
MAHARASHTRA 
9500779797

srikanth.tripathy@dpu.edu.in 
Dr Lunia prajay   HBT Trauma Care hospital  HBT Trauma Care hospital, Ajgaokar plot Western express highway, Jogeshwari east, Mumbai -400060, Maharashtra, India.
Mumbai (Suburban)
MAHARASHTRA 
9870515450

drprajaylunia@gmail.com 
Dr Anupam Mandal  IPGME&R and SSKM Hospital  4th floor research department,244, AJC Bose Road,Kolkata- 700020
Kolkata
WEST BENGAL 
9434120356

mandalanupam75@gmail.com 
Dr Anand Kawade  KEM Hospital Research Center Vadhu Budruk  Department of clinical research, Vadhu Budruk,Tal- Shirur, Dist- Pune Maharashtra 412216
Pune
MAHARASHTRA 
9850559983

anand.kawade@kemhrcvadu.org 
DrSudhir Pawar  Lokmanya Tilak Municipal Medical College and General Hospital  2nd floor, Pharmacology department, Sion Mumbai 400022 Maharashtra India
Mumbai
MAHARASHTRA 
98969111630

dr.sudhirpawar@gmail.com 
Dr Trupti Gilada  Masina Hospital Trust  Masina Hospital Trust, Sant savata Marg, Byculla east, Mumbai-400027, Maharashtra, India.
Mumbai
MAHARASHTRA 
9819112122

trupti_gilada@yaahoo.com 
Dr Vivek Shejole  Medipoint Hospital Pvt Ltd  3rd floor, Department of clinical research,241/1 New D.P road, Aundh, Pune - 411007, Maharashtra, India.
Pune
MAHARASHTRA 
989084636

drvivek.medipoint@gmail.com 
DrAshish Goyal  Orchid Specialty Hospital  2nd floor, L-Square, Off. Dhanori Jakat Naka, Sr. No. - 282/3/3, Porwal Rd, Lohegaon, Pune - 411047, Maharashtra, India
Pune
MAHARASHTRA 
7743871226

ashish_critical@yahoo.co.in 
Dr Aniket Joshi  Oyster & Pearl Hospital (Phadnis Clinic Pvt Ltd)  5th floor, Department of clinical research 1671 -75, ganeshkhind road shivajinagar Pune, 411005, Maharastra, India
Pune
MAHARASHTRA 
9890619523

acj9890619523@yahoo.com 
Dr Varun Bafna  Rajarshee shahu Maharaj government Medical college & Chhatrapati Pramila raje hospital  Medicine Department, Dasara Chowk, Bhausinghji Road, Town Hall Kolhapur, 416012, Maharashtra India
Kolhapur
MAHARASHTRA 
9066565353

drvarunbafna6@gmail.com 
Dr Balbir Singh Kohli  Shree Pragati Foundations, Hira Mongi Navneet Hospital  3rd Floor Clinical research Department, Valji Lodha Road, Near Kalidas Natya Gruh, Mulund west Mumbai-400080, Maharashtra India. "
Mumbai (Suburban)
MAHARASHTRA 
982047135

drbalbirsinghk@gmail.com 
Dr Sandesh Patil  Shree Siddhivinayak Maternity & Nursing home   2nd floor, Department of Medicine, Shree Siddhivinayak Maternity & Nursing home ,Unity Campus, Opp. KTHM College, gangapur Road, Nasik 422002, Maharastra India.
Nashik
MAHARASHTRA 
9892503486

drsandeshpatil@gmail.com 
 
Details of Ethics Committee
Modification(s)  
No of Ethics Committees= 18  
Name of Committee  Approval Status 
Ashirwad Ethics Committee Ashirwad Hospital and Research Centre Maratha Section, Near Jijamata Udyan Ulhasnagar Thane Thane Maharashtra - 421004 India  Approved 
Ethics Committee Dr. D.Y Patil Vidyapeeth, Dr. D.y Patil Medical college and hospital and Research centre, Sant Tukaram Nagar Pimpri,Pune 411018  Approved 
Ethics Committee Hira Mongi Navneet Hospital Mulund West Mumbai Valaji Ladha Road Mumbai Mumbai City Maharashtra - 400080 India  Approved 
Ethics Committee Inamdar Multispeciality Hospital  Approved 
ETHICS COMMITTEE OF TRAUMA CARE HOSPITAL  Not Applicable 
IEC of New Health Care Nursing Home   Not Applicable 
Institutional Ethics Committee - Human Research Lokmanya Tilak Municipal Medical College & General Hospital, Sion  Approved 
Institutional Ethics Committee BVDU, Bharati Hospital & Research Centre, Bharati Hospital, Pune-Satara road, Dhankawadi, Pune - 411043, Maharashtra, India  Approved 
Institutional Ethics Committee D Y Patil Medical College  Submittted/Under Review 
Institutional Ethics Committee Masina Hospital Marg Byculla Mumbai  Not Applicable 
IPGME&R Resaerch Oversight Committee,IPGME&R and SSKM Hospital ,244, AJC Bose Road,Bhowanipore,Kolkata- 700020  Approved 
KEM Hospital research centre ethics Committee, sardar moodliar road, rasta peth, pune 41101  Approved 
Magna-Care Ethica Committee, C/o Chopda medicare and research centre Pvt Lt; Magnum heart institute, Patil Lane no 1, Near K.B.H Vidyalaya, Canada Corner, Nashik-422005, Maharashtra India  Approved 
O & P institutional committee, Oyster & Pearl Hospital (Phadnis Clinic Pvt Ltd) 1671 -75, ganeshkhind road shivajinagar Pune, 411005, Maharashtra, India  Approved 
ORCHID SPECIALITY HOSPITAL ETHICS COMMITTEE Orchid Speciality Hospital, L-Square, Porwal Road Sr. No 282/3/3, Lohgaon, Pune Maharashtra - 411047 India  Approved 
Penta-Med Ethics Committee Medipoint Hospitals Pvt.Ltd 241/1, New D.P.Road, Near Sai Heritage,Aundh Pune Pune Maharashtra - 411007 India  Approved 
Rajarshree Chhatrapati Shahu Maharaj Govt. Medical College and Chhatrapati Pramila Raje Hospital, Kolhapur Institutional ethics Committee 2 (RCSMGMCIEC2).,Dasara Chowk, Bhausingji road, town hall, Kolhapur-416012 Maharashtra India  Approved 
Shree Siddhivinayak Hospital Ethics Committee  Not Applicable 
 
Regulatory Clearance Status from DCGI  
Status 
Approved/Obtained 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  Healthy Volunteers 
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Biological E Ltd.’s (Corbevax®)  Subunit vaccine containing RBD protein adsorbed onto Aluminium Hydroxide. The formulation also contains CpG 1018 as adjuvant Unit dose strength: 0.5 ml as a single booster dose at day 0 Dosage level:25 μg of RBD antigen of SARS-Cov-2 Route of administration: Intramuscular 
Intervention  Reliance Life Sciences Pvt. Ltd.’s (RelCoVax®) (product code R-TPR-106)  Subunit vaccine containing RBD and Nucleocapsid proteins adsorbed onto Aluminum hydroxide. The formulation also contains CpG 1018 dinucleotide adjuvant Unit dose strength: 0.5 ml as a single booster dose at day 0 Dosage level: 10 μg of RBD antigen of SARS-CoV-2 and 10 μg of NC antigen of SARS-CoV-2 Route of administration: Intramuscular 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  80.00 Year(s)
Gender  Both 
Details  1. Male and female subjects who have received their primary vaccination series with either two doses of Covishield® or two doses of Covaxin® ≥ 6 months prior to enrolment, as confirmed by COVID- 19 certificate issued by CoWIN. 2. Age is ≥18 years to ≤ 80 years. 3. The subject voluntarily agreed to participate in the study, and signed an informed consent form and agrees to remain in study area for period of study and willing to comply with other protocol requirements. Subject of stable health as determined by investigator based on medical history, physical examination and laboratory examination at screening. 4. Body temperature is between 95.6 to 99.0 ºF. 5. Body mass index (BMI) at 18.0 to 35.0 kg/m2 (inclusive). 6. Willing to allow storage and future use of biological samples for future research 7. Male and Female subjects of childbearing potential must be using adequate birth control measures, as discussed with the study doctor and should agree to continue such precautions for 6 months after receiving the last injection of study medication. Menopausal females must have experienced their last period more than 12 months prior to study entry to be classified as not of childbearing potential. Note-Female subjects of child bearing potential must agree to use adequate contraception during the study and continue at least six months after the vaccine dose of study. For this study, acceptable and effective methods of contraception for females include: • Intrauterine device placed at least 3 months prior to the start of the study and remaining in place during the study period, • Two barrier methods used together (cervical cap, diaphragm, contraceptive sponge, or vaginal spermicide plus a male or female condom) or • Absolute sexual abstinence (no sexual intercourse or genital contact with a male partner).
For males, adequate birth control methods suggested and defined as double barrier contraception, i.e., condom + diaphragm, condom or diaphragm + spermicidal gel 
 
ExclusionCriteria 
Details  1. History of any of the following: a. Any product (investigational or off-label or which is approved by regulatory authority) for prevention of COVID-19 disease within 6 months prior to enrolment. b. History of receipt of any COVID Vaccine as a booster dose c. Receipt of any licensed vaccine within 28 days before enrolment in study or planned administration of any vaccine for until 28 days after study vaccination. 2. Individuals who report any medical condition as determined by investigator / clinician is not suitable to receive protein based subunit COVID -19 vaccines. 3. Seropositive for HIV 1 and 2, HBsAg and HCV. 4. Have a history of severe allergies such as: anaphylactic shock, allergic laryngeal edema, allergic purpura, thrombocytopenic purpura, local allergic necrosis (Arthus reaction to any component of the research vaccine i.e. RLS Protein Subunit Vaccine against SARS-CoV-2 Virus (RelCoVax®) or Corbevax® or aluminium preparation. Subjects with any previous history of serious side effects of vaccines or drugs or history of allergic disease or reactions likely to be exacerbated by any component of the vaccines in study will also be excluded 5. Those with a history of confirmed SARS COVID-19 infection or current COVID-19 infection meeting any of the following: ➢ History of confirmed SARS-CoV 2 infection (Symptomatic or asymptomatic disease) in prior 6 months of enrollment as established by confirmed RTPCR test. ➢ RTPCR test which is positive within 72 hours prior to enrollment. 6. Have taken antipyretics or analgesics within 24 hours before the study enrollment or planned use of any investigational or non-registered product other than study vaccine during study period including three months prior to enrollment. 7. Current use or past history of alcohol abuse or consumption of drug of abuse. 8. Long term use (> 2 weeks) of oral or parenteral steroids (glucocorticoids) or high dose inhaled steroids (> 800 mcg/day of beclomethasone dipropionate or equivalent) within the preceding 6 months. (Inhaled and topical steroids are allowed). 9. Any confirmed or suspected immunosuppressive or immunodeficient condition, due to underlying illness or treatment with immunosuppressive or cytotoxic or anticancer chemotherapy or radiation therapy within preceding 36 months. Any medical condition that in the judgment of the investigator would make study participation unsafe and / or can interfere with assessment or vaccine response. 10. Acute or chronic, uncontrolled and / or clinically significant systemic disorders such as cardiovascular, gastrointestinal, respiratory, neurologic, hepatic, renal, endocrine, hematological, psychiatric or immunological disorders. 11. Have received blood or blood-related products, including immunoglobulin within 3 months prior to enrollment; or plan to use it during the study. 12. Lactating women or pregnant women (as determined by serum beta HCG). 
 
Method of Generating Random Sequence   Random Number Table 
Method of Concealment   An Open list of random numbers 
Blinding/Masking   Open Label 
Primary Outcome  
Outcome  TimePoints 
To evaluate & compare the immunogenicity of single heterologous booster dose of RLS Protein Subunit Vaccine against SARS-CoV-2 Virus i.e. RelCoVax® & single heterologous booster dose of reference Protein Subunit Vaccine (Biological E Ltd.’s Corbevax®) after administration in subjects who have completed primary vaccination.  From Day 0, Day 28, Day 56, Day 90 
 
Secondary Outcome  
Outcome  TimePoints 
To evaluate the safety & tolerability & additional immunogenicity of single heterologous booster dose of RLS Protein Subunit Vaccine against SARS-CoV-2 Virus i.e. RelCoVax® and single heterologous booster dose of reference Protein Subunit Vaccine (Biological E Ltd.’s Corbevax®) after administration in subjects who have completed primary vaccination  From Day 0, Day 28, Day 56, Day 90 
 
Target Sample Size   Total Sample Size="200"
Sample Size from India="200" 
Final Enrollment numbers achieved (Total)= "0"
Final Enrollment numbers achieved (India)="200" 
Phase of Trial   Phase 2 
Date of First Enrollment (India)   01/11/2023 
Date of Study Completion (India) Date Missing 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Date Missing 
Estimated Duration of Trial   Years="1"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Applicable 
Recruitment Status of Trial (India)  Completed 
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 Prospective, multi-center, randomized, open label, active control, phase 2 clinical study to evaluate immunogenicity, safety and tolerability of single heterologous booster dose of RelCoVax® (Protein Subunit Vaccine of Reliance Life Sciences against SARS-CoV-2 Virus) with Corbevax® (Protein Subunit Vaccine of Biological E Ltd. against SARS-CoV-2 Virus).

In this study we will only accept healthy Male and female subjects who have received their primary vaccination series with either two doses of Covishield® or two doses of Covaxin® ≥ 6 months prior to enrolment, as confirmed by COVID- 19 certificate issued by Cowin by before randomization. Subjects who have received COVID vaccine other than Covishield or Covaxin in past would not be eligible for enrolment. Subjects will receive a single booster dose of RLS SARS CoV-2 vaccine (RelCoVax®) or Corbevax® on day 0 as per Randomization schedule. Subjects will be randomized in 1:1 ratio to receive either RLS SARS CoV-2 vaccine RelCoVax® Or Corbevax®. Enrollment will be such that 100 subjects will be those who have received primary vaccination with Covishield®.  These subjects will be randomly assigned in equal proportion to either RelCoVax® group (50 subjects) or Corbevax® group (50 subjects) and 100 enrolled subjects will be those who have received Covaxin® as primary vaccination. These subjects will also be randomly assigned in equal proportion to either RelCoVax® group (50 subjects) or Corbevax® group (50 subjects).

It is proposed to enroll 200 subjects. (100 subjects in RelCoVax® arm and 100 subjects in Corbevax® arm). 100 enrolled subjects will be those who have received Covishield® as two doses of primary vaccination and 100 enrolled subjects will be those who have received Covaxin® as two doses of primary vaccination.

Safety would be evaluated in all subjects till day 90 while immunogenicity will be evaluated in a subpopulation at baseline (i.e. before receipt of booster dose), at day 28 and day 56 as follows:

Anti RBD IgG, anti-NC IgG, neutralizing antibody (against Omicron variant and additional variant) will be evaluated in at least 46 subjects in each group (i.e. total 92 subjects) at baseline and at day 28. These evaluations will be conducted in 20 subjects in each group at day 56.

Interferon gamma, IL-4 and IL-17 will be evaluated in at least 20 subjects in each group at baseline and at day 28 and at least 10 subjects in each group at day 56

CD4 and CD8 assessment would be conducted in at least 10 subjects in each group at baseline and day 28 and 56

For immunogenicity assessment following tests would be conducted:

• Anti RBD IgG,

• Anti-NC IgG,

• Neutralizing antibody assessment by PRNT /Microneutralization Tests / Pseudo Neutralization test.

• Assessment of T cell response as determined by –

o Levels of Interferon γ and / or count of antigen activated T cells secreting interferon γ (indicative of Th1 response)

o IL 4 (indicative of Th2 response) and

o IL 17 (Indicative of Th17 response)

o CD4 and CD8 counts

Timepoints for immunogenicity assessment are day 0, day 28 and day 56.

Safety of vaccine will be evaluated by reporting of adverse events. Adverse events will be known by subject information, physical examination, laboratory investigations, telephonic follow up with subjects. Subjects would be provided with subject diary card to report the adverse events. Total duration of follow up for safety is up to 90 days after vaccination.


 
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