There are multiple definitions:

1. adeno-associated virus(English)

   • a small non-enveloped parvovirus containing a single-stranded DNA genome
   • ITR, rAAV, AAV-NT3, AAV-PCSK9, AAV-P301S
   • Virology, Genomics
   • https://doi.org…the.2005.06.407

2. ANCA-associated vasculitis(English)

   • a rare small vessel disease characterized by multi-organ involvement
   • ANCA, BVAS, CXCL12, TPO
   • Vascular disease
   • https://doi.org…390/jcm10122715