Donor-Derived Viral Specific T-cells (VSTs)

"VSTs will be infused into stem cell transplant recipients who have evidence of viral infection or reactivation defined as any of the below:~* Blood adenovirus PCR ≥ 1,000~* Blood CMV PCR ≥ 500~* Blood EBV PCR ≥ 9,000~* Plasma BKV PCR \>1,000~* Plasma JC Virus PCR \>1,000~* Evidence of invasive adenovirus infection or disease, defined as the presence of adenoviral positivity in one or more sites.~* Evidence of invasive CMV infection, eg pneumonitis, retinitis, colitis~* Evidence of invasive EBV disease/infection, EBV-associated lymphoproliferation (EBV-LPD) defined as proven EBV-LPD by biopsy or probable EBV-LPD defined as an elevated EBV DNA level in the blood associated with clinical symptoms (adenopathy or fever or masses on imaging) but without biopsy confirmation, or EBV-associated malignancies.~* Evidence of symptomatic BK virus infection, which may include symptomatic hemorrhagic cystitis, or BK nephropathy.~* Evidence of PML or other CNS infection due to JC virus."