Allovir, Inc., a clinical-stage cell therapy company, engages in the research and development of allogeneic, off-the-shelf multi-virus specific T cell (VST) therapies to prevent and treat devastating viral-associated diseases. The company's lead product is posoleucel, an allogeneic, off-the-shelf VST therapy, to treat BK virus, cytomegalovirus, adenovirus, Epstein-Barr virus, human herpesvirus 6, and JC virus. Its preclinical and clinical development product candidates include ALVR106 for the respiratory syncytial virus, influenza, parainfluenza virus, and human metapneumovirus; ALVR109 to treat SARS-CoV-2 and COVID-19; ALVR107 for treating hepatitis B; and ALVR108.