PT - JOURNAL ARTICLE AU - Wibmer, Constantinos Kurt AU - Ayres, Frances AU - Hermanus, Tandile AU - Madzivhandila, Mashudu AU - Kgagudi, Prudence AU - Lambson, Bronwen E. AU - Vermeulen, Marion AU - van den Berg, Karin AU - Rossouw, Theresa AU - Boswell, Michael AU - Ueckermann, Veronica AU - Meiring, Susan AU - von Gottberg, Anne AU - Cohen, Cheryl AU - Morris, Lynn AU - Bhiman, Jinal N. AU - Moore, Penny L. 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.