%0 Journal Article %A Villanego, Florentino %A Mazuecos, Auxiliadora %A Perez-Flores, Isabel M %A Moreso, Francesc %A Andres, Amado %A Jimenez-Martinn, Carlos %A Molina, Maria %A Canal, Cristina %A Sanchez-Camara, Luis A %A Zarraga, Sofía %A Ruiz-Fuentes, Maria Del Carmen %A Aladren, Maria Jose %A Melilli, Edoardo %A Lopez, Veronica %A Sanchez-Alvarez, Emilio %A Crespo, Marta %A Pascual, Julio %T Predictors of severe COVID-19 in kidney transplant recipients in the different epidemic waves: Analysis of the Spanish Registry. %D 2021 %U http://hdl.handle.net/10668/17389 %X SARS-CoV-2 infection has produced high mortality in kidney transplant (KT) recipients, especially in the elderly. Until December 2020, 1011 KT with COVID-19 have been prospectively included in the Spanish Registry and followed until recovery or death. In multivariable analysis, age, pneumonia, and KT performed ≤6 months before COVID-19 were predictors of death, whereas gastrointestinal symptoms were protective. Survival analysis showed significant increasing mortality risk in four subgroups according to recipient age and time after KT (age 6 months, age 6 and age ≥65 and time ≤6): mortality rates were, respectively, 11.3%, 24.5%, 35.4%, and 54.5% (p < .001). Patients were significantly younger, presented less pneumonia, and received less frequently specific anti- COVID- 19 treatment in the second wave (July– December) than in the first one (March– June). Overall mortality was lower in the second wave (15.1 vs. 27.4%, p < .001) but similar in critical patients (66.7% vs. 58.1%, p = .29). The interaction between age and time post- KT should be considered when selecting recipients for transplantation in the COVID- 19 pandemic. Advanced age and a recent KT should foster strict protective measures, including vaccination. %K Clinical research/practice %K Infection and infectious agents - viral %K Kidney transplantation/nephrology %K Patient survival %~