[ANCA-Associated Glomerulonephritis Following SARS-CoV2 Infection: A Case Report].

Area of Science:

• Nephrology
• Immunology
• Infectious Diseases

Background:

• Antineutrophil cytoplasmic autoantibody (ANCA)-associated vasculitis (AAV) is a group of autoimmune disorders affecting small- and medium-sized blood vessels, often leading to kidney damage.
• Infections are suspected triggers for autoimmune processes like AAV.
• Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) has been linked to various kidney complications, including acute kidney injury (AKI).

Observation:

• A 61-year-old male presented with new-onset diffuse proliferative ANCA-associated glomerulonephritis.
• The patient's condition emerged after contracting COVID-19.

Findings:

• This case highlights a potential link between SARS-CoV-2 infection and the development of ANCA-associated glomerulonephritis.
• The occurrence of AAV following COVID-19, while rare, underscores the complex interplay between viral infections and autoimmune responses.

Implications:

• Further research is warranted to understand the mechanisms by which SARS-CoV-2 may trigger or exacerbate AAV.
• Clinicians should consider AAV in patients presenting with kidney disease after COVID-19.
• This case contributes to the limited but growing body of evidence on COVID-19-associated autoimmune phenomena.