Safety and immunogenicity of a SARS-CoV-2 recombinant protein subunit vaccine adjuvanted with Alum + CpG 1018 in healthy Indonesian adults: A multicenter, randomized, comparative, observer-blind, placebo-controlled phase 2 study

Autor: Martira Maddeppungeng, Asrawati Nurdin, Yetty Movieta Nency, Rini Sekartini, Bernie Endyarni Medise, Soedjatmiko Soedjatmiko, Muh. Nasrum Massi, Sidrah Darma, Andi Husni Esa Darussalam, Nur Ramadhani, Najdah Hidayah, Maisuri Tadjuddin Chalid, Sri Ramadany, Sitti Wahyuni, Irawaty Djaharuddin, Arif Santoso, Bahrul Fikri, Suriani Alimuddin, Ninny Meutia Pelupessy, Rina Masadah, Azka Zhafira Putri, Lilis Setyaningsih, Finny Fitry Yani, Fenty Anggrainy, Putri Awaliyah Deza, Nani Maharani, Endang Mahati, Rebriarina Hapsari, Nur Farhanah, Setyo Gundi Pramudo, Dimas Tri Anantyo
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Human Vaccines & Immunotherapeutics, Vol 20, Iss 1 (2024)
Druh dokumentu: article
ISSN: 21645515
2164-554X
2164-5515
DOI: 10.1080/21645515.2024.2429231
Popis: Globally, dozens of COVID-19 vaccines are licensed under emergency or conditional authorization, but especially in low and middle-income countries, their availability varies. Indonesia decided to become independent and produce its own vaccines locally. This study investigated the safety and immunogenicity of a SARS-CoV-2 recombinant protein subunit vaccine adjuvanted with Alum + CpG 1018. This study involved 360 adults aged 18 years and above. It compared two vaccine dosages, a-12.5 µg and a 25-µg dose of receptor binding domain protein, to a placebo (1:1:1). A total of 40.6% of participants in this study experienced at least one adverse event (AE), with most being mild. There was no statistically significant difference in AEs between the groups. The microneutralization test showed the highest neutralizing antibody titer (IU/mL) in the 25 µg dose vaccine group at day 28 after the second dose (3,300 95%CI 2,215-4,914), although it was not statistically different from the 12.5 µg dose group (3,157 95%CI 2,135-4,669). Similarly, IgG antibody concentrations in the 25 µg dose vaccine group at day 28 were the highest compared to the 12.5 µg dose and placebo. According to protocol, only the formulation with the better antibody profile and comparable reactogenicity was further evaluated at months three and six. Thus, follow-up was only performed for the 25 µg dose vaccine, demonstrating antibody persistence at month six and had a favorable safety profile. These results position this SARS-CoV-2 recombinant protein subunit vaccine adjuvanted with Alum + CpG 1018 as a promising candidate to fight against COVID-19.
Databáze: Directory of Open Access Journals
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