BK virus is polyoma virus associated with
nephropathy, typically after transplant.
High levels of BK viremia are associated
with the development of ureteric strictures,
Polyoma virus associated nephropathy, and generalized vasculopathy
Timely detection and early reduction of
immunosuppression are critical and can
reduce rates of graft loss related to polyoma virus associated nephropathy from 90% to 10- 30%.