British drugmaker GlaxoSmithKline said early-stage lab data shows its COVID-19 monoclonal antibody treatment, jointly developed with U.S. partner Vir Biotechnology, is effective against all mutations of the new Omicron strain. Glaxo said in a Dec. 7 statement that new preclinical findings generated from in vitro testing of the drug, called sotrovimab, show that the treatment is effective against all 37 identified mutations to date in Omicron’s spike protein. “These pre-clinical data demonstrate the potential for our monoclonal antibody to be effective against the latest variant, Omicron, plus all other variants of concern defined to date” by the World Health Organization (WHO), said Dr. Hal Barron, Chief Scientific Officer and President of Research and Development, at GSK. The data, which has not yet been peer reviewed, builds on earlier preclinical findings released last week, which showed sotrovimab was effective against key Omicron mutations. “Sotrovimab is the first monoclonal antibody to report preclinical …