Most Closely Human Leukocyte Antigen (HLA)-Matched BK Virus-specific T Lymphocytes (Viralym-B)

"Follow-up Assessments: The timing of follow-up visits is based on the date of Viralym-B infusion. If a patient has multiple Viralym-B infusions the schedule resets again at the beginning so follow up relates to the last Viralym-B infusion.~Follow up will occur at 7 days, 14 days, 21 days, 28 days, 42 days, 90 days, 180 days, and 365 days post enrollment."