KIF4A and anti-neutrophil cytoplasmic antibody-associated vasculitis: In autoimmune conditions, anti-KIF4A antibodies have been linked to ANCA-associated vasculitis (AAV): antigen microarray screening revealed a significantly higher prevalence of anti-KIF4A antibodies among AAV patients compared to healthy controls and individuals with other autoimmune diseases, suggesting its potential as a novel serological diagnostic marker for AAV, warranting further investigation to validate its specificity and clinical utility [124].