People with kidney failure who are on dialysis or who have received a kidney transplant face a higher risk of dying from COVID-19. New research reveals that these individuals have profound immune system–related differences compared with people with normal kidney function, and that these differences are further amplified by SARS-CoV-2 infection. The findings will be presented online at ASN Kidney Week 2021 November 4–November 7.

The study included 32 patients who were on hemodialysis or who received a kidney transplant and were hospitalized for COVID-19, as well as 12 dialysis or transplant patients without COVID-19 and 10 healthy controls.

Patients with a severe COVID-19 course were older and showed lower counts of immune cells called lymphocytes and monocytes, compared with patients with a benign disease course. Patients without COVID-19 had lower numbers of all major immune cell subsets compared with healthy patients, and these numbers were further reduced in patients with COVID-19, especially in patients with a severe disease course.

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