Safety and immunogenicity of SII-NVX-CoV2373 (COVID-19 vaccine) in adults in a phase 2/3, observer-blind, randomised, controlled study

© 2022 The Author(s)..

Background: NVX-CoV2373, a Covid-19 vaccine was developed in the USA with ∼90% efficacy. The same vaccine is manufactured in India after technology transfer (called as SII-NVX-CoV2373), was evaluated in this phase 2/3 immuno-bridging study.

Methods: This was an observer-blind, randomised, phase 2/3 study in 1600 adults. In phase 2, 200 participants were randomized 3:1 to SII-NVX-CoV2373 or placebo. In phase 3, 1400 participants were randomized 3:1 to SII-NVX-CoV2373 or NVX-CoV2373 (940 safety cohort and 460 immunogenicity cohort). Two doses of study products (SII-NVX-CoV2373, NVX-CoV2373 or placebo) were given 3 weeks apart. Primary objectives were to demonstrate non-inferiority of SII-NVX-CoV2373 to NVX-CoV2373 in terms of geometric mean ELISA units (GMEU) ratio of anti-S IgG antibodies 14 days after the second dose (day 36) and to determine the incidence of causally related serious adverse events (SAEs) through 180 days after the first dose. Anti-S IgG response was assessed using an Enzyme-Linked Immunosorbent Assay (ELISA) and neutralizing antibodies (nAb) were assessed by a microneutralization assay using wild type SARS CoV-2 in participants from the immunogenicity cohort at baseline, day 22, day 36 and day 180. Cell mediated immune (CMI) response was assessed in a subset of 28 participants from immunogenicity cohort by ELISpot assay at baseline, day 36 and day 180. The total follow-up was for 6 months. Trial registration: CTRI/2021/02/031554.

Findings: Total 1596 participants (200 in Phase 2 and 1396 in Phase 3) received the first dose. SII-NVX-CoV2373 was found non-inferior to NVX-CoV2373 (anti-S IgG antibodies GMEU ratio 0.91; 95% CI: 0.79, 1.06). At day 36, there was more than 58-fold rise in anti-S IgG and nAb titers compared to baseline in both the groups. On day 180 visit, these antibody titers declined to levels slightly lower than those after the first dose (13-22 fold-rise above baseline). Incidence of unsolicited and solicited AEs was similar between the SII-NVX-CoV2373 and NVX-CoV2373 groups. No adverse event of special interest (AESI) was reported. No causally related SAE was reported.

Interpretation: SII-NVX-CoV2373 induced a non-inferior immune response compared to NVX-CoV2373 and has acceptable safety profile.

Funding: SIIPL, Indian Council of Medical Research, Novavax.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:10

Enthalten in:

The Lancet regional health. Southeast Asia - 10(2023) vom: 20. März, Seite 100139

Sprache:

Englisch

Beteiligte Personen:

Kulkarni, Prasad S [VerfasserIn]
Kadam, Abhijit [VerfasserIn]
Godbole, Sheela [VerfasserIn]
Bhatt, Varsha [VerfasserIn]
Raut, Abhishek [VerfasserIn]
Kohli, Sunil [VerfasserIn]
Tripathi, Santanu [VerfasserIn]
Kulkarni, Praveen [VerfasserIn]
Ludam, Rakhi [VerfasserIn]
Prabhu, Madhav [VerfasserIn]
Bavdekar, Ashish [VerfasserIn]
Gogtay, Nithya J [VerfasserIn]
Meshram, Sushant [VerfasserIn]
Kadhiravan, Tamilarasu [VerfasserIn]
Kar, Sonali [VerfasserIn]
Narayana, D H Ashwath [VerfasserIn]
Samuel, Clarence [VerfasserIn]
Kulkarni, Govind [VerfasserIn]
Gaidhane, Abhay [VerfasserIn]
Sathyapalan, Dipu [VerfasserIn]
Raut, Sidram [VerfasserIn]
Hadda, Vijay [VerfasserIn]
Bhalla, Hira Lal [VerfasserIn]
Bhamare, Chetanraj [VerfasserIn]
Dharmadhikari, Abhijeet [VerfasserIn]
Plested, Joyce S [VerfasserIn]
Cloney-Clarke, Shane [VerfasserIn]
Zhu, Mingzhu [VerfasserIn]
Pryor, Melinda [VerfasserIn]
Hamilton, Stephanie [VerfasserIn]
Thakar, Madhuri [VerfasserIn]
Shete, Ashwini [VerfasserIn]
Gautam, Manish [VerfasserIn]
Gupta, Nivedita [VerfasserIn]
Panda, Samiran [VerfasserIn]
Shaligram, Umesh [VerfasserIn]
Poonawalla, Cyrus S [VerfasserIn]
Bhargava, Balram [VerfasserIn]
Gunale, Bhagwat [VerfasserIn]
Kapse, Dhananjay [VerfasserIn]
COVOVAX Study Group [VerfasserIn]
Kanitkar, Shubhangi A [Sonstige Person]
Kakrani, Arjun L [Sonstige Person]
Tripathy, Srikanth P [Sonstige Person]
Tilak, Abhijit V [Sonstige Person]
Dhamne, Akshay A [Sonstige Person]
Mirza, Shahzad Beg [Sonstige Person]
Athavale, Prachi V [Sonstige Person]
Bhowmik, Mandakini [Sonstige Person]
Ratnakar, Parag J [Sonstige Person]
Gupta, Subodh [Sonstige Person]
Deotale, Vijayshri [Sonstige Person]
Jain, Jyoti [Sonstige Person]
Kalantri, Ashwini [Sonstige Person]
Jain, Vineet [Sonstige Person]
Goyal, Nidhi [Sonstige Person]
Arya, Alok [Sonstige Person]
Rongsen-Chandola, Temsunaro [Sonstige Person]
Dasgupta, Shreyasi [Sonstige Person]
Periera, Pratibha [Sonstige Person]
A, Vanmathi [Sonstige Person]
Kawade, Anand [Sonstige Person]
Gondhali, Arunkumar [Sonstige Person]
Kudyar, Palvi [Sonstige Person]
Singh, Abhishek [Sonstige Person]
Yadav, Ravi [Sonstige Person]
Alexander, Alina [Sonstige Person]
Gunasekaran, Venugopalan [Sonstige Person]
Dineshbabu, Sekar [Sonstige Person]
Samantaray, P C [Sonstige Person]
Ravish, H S [Sonstige Person]
Kamra, Deepshikha [Sonstige Person]
Gaidhane, Shilpa [Sonstige Person]
Zahiruddin, Quazi Syed [Sonstige Person]
Moni, Merlin [Sonstige Person]
Kumar, Anil [Sonstige Person]
Dravid, Ameet [Sonstige Person]
Mohan, Anant [Sonstige Person]
Suri, Tejas [Sonstige Person]
Patel, Tejas K [Sonstige Person]
Kishore, Surekha [Sonstige Person]
Choche, Rahul [Sonstige Person]
Ghatage, Deepak [Sonstige Person]
Salvi, Sugam [Sonstige Person]

Links:

Volltext

Themen:

Immunogenicity
Journal Article
NVX-CoV2373
Non-inferiority
SII-NVX-CoV2373
Safety

Anmerkungen:

Date Revised 10.07.2023

published: Print-Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.1016/j.lansea.2022.100139

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM351584218