News|Articles|September 1, 2021

SK Bioscience and GSK Start Phase III Trial of Adjuvanted COVID-19 Vaccine Candidate

SK and GSK announce the initiation of a Phase III clinical study of SK’s COVID-19 vaccine candidate, GBP510, in combination with GSK’s pandemic adjuvant.

SK bioscience (SK) and GlaxoSmithKline (GSK) announced the initiation of a Phase III clinical study of SK’s COVID-19 vaccine candidate, GBP510, in combination with GSK’s pandemic adjuvant following positive interim Phase I/II results in an Aug. 31, 2021 press release. The Phase III clinical study is a randomized, active-controlled global trial that will enroll approximately 4,000 participants. It will evaluate GBP510’s safety and immunogenicity compared to the AstraZeneca/Oxford University COVID-19 vaccine. This will be one of the first global Phase III trials to compare two different COVID-19 vaccine candidates.

Interim Phase I/II data showed that participants who received the adjuvanted vaccine candidate developed strong neutralizing antibody responses, demonstrating a 100% seroconversion rate. No safety concerns have been identified to date in the ongoing study.

Results from the Phase III study are expected in the first half of 2022. The vaccine is then expected to be supplied worldwide through the COVAX facility, pending positive results and regulatory approval.

Source: GSK


Related to this article

PharmTech Weekly Roundup—October 2, 2026
This week on PharmTech, Merck diversified its pipeline, USP emphasizes supply chain security, AI systems are examined, and speakers preview their presentations at CPHI Milan and AAPS PharmSci 360.
CPHI Milan 2026: Nitrosamine Risk Mitigation, Part 1
Capsugel's Bram Baert and Sandrine Picco argue that chasing zero nitrite in pharmaceutical excipients is often impractical and costly. They recommend setting scientifically justified, risk-based limits and consistently staying below them.
Regulatory Roundup—September 2026
The FDA opened an expedited IND pilot, tightened scrutiny of foreign trial data, and finalized a rule recognizing non-animal testing methods. In Europe, the EMA advanced pharmaceutical legislation reform, restricted 2 legacy products, and opened an injectable-iron safety review.
Pharma Logistician Using IoT Based On Blockchain | Image Credit: ©leowolfert -stock.adobe.com
Michael Levy, senior vice president, Digital & Innovation, USP, explains the digital supply chain in a preview of his upcoming CPHI Milan panel presentation, The Next Phase of Pharma Supply Chains.