PT - JOURNAL ARTICLE AU - Constantinos Kurt Wibmer AU - Frances Ayres AU - Tandile Hermanus AU - Mashudu Madzivhandila AU - Prudence Kgagudi AU - Bronwen E. Lambson AU - Marion Vermeulen AU - Karin van den Berg AU - Theresa Rossouw AU - Michael Boswell AU - Veronica Ueckermann AU - Susan Meiring AU - Anne von Gottberg AU - Cheryl Cohen AU - Lynn Morris AU - Jinal N. Bhiman AU - Penny L. Moore TI - SARS-CoV-2 501Y.V2 escapes neutralization by South African COVID-19 donor plasma AID - 10.1101/2021.01.18.427166 DP - 2021 Jan 01 TA - bioRxiv PG - 2021.01.18.427166 4099 - http://biorxiv.org/content/early/2021/01/19/2021.01.18.427166.short 4100 - http://biorxiv.org/content/early/2021/01/19/2021.01.18.427166.full AB - SARS-CoV-2 501Y.V2, a novel lineage of the coronavirus causing COVID-19, contains multiple mutations within two immunodominant domains of the spike protein. Here we show that this lineage exhibits complete escape from three classes of therapeutically relevant monoclonal antibodies. Furthermore 501Y.V2 shows substantial or complete escape from neutralizing antibodies in COVID-19 convalescent plasma. These data highlight the prospect of reinfection with antigenically distinct variants and may foreshadow reduced efficacy of current spike-based vaccines.Competing Interest StatementThe authors have declared no competing interest.