Posoleucel (ALVR105, Formerly Viralym-M) for Multi-Virus Prevention in Patients Post-Allogeneic Hematopoietic Cell Transplant

Inclusion Criteria

• ≥1 year of age at the day of screening visit.
• Either no evidence of viral infection or viremia, or asymptomatic, viral infection with 3 or fewer viruses of interest at time of screening
• Within 15 and 42 days of receiving a first allogeneic HCT and have demonstrated clinical engraftment
• Meet one or more of the following criteria at the time of randomization:
• Related (sibling) donor with at least one mismatch at one of these HLA-gene loci: HLA-A, -B or -DR
• Haploidentical donor
• Unrelated donor with at least one mismatch at one of these HLA-gene loci: HLA-A, -B, -C, or -DR
• Use of umbilical cord blood as stem cell source
• Ex vivo graft manipulation resulting in T cell depletion
• Lymphocyte Count <180/mm3 and/or cluster of differentiation 4 (CD4) Count <50/mm3 Key

Exclusion Criteria

• History of AdV, BKV, CMV, EBV, HHV-6, and/or JCV end-organ disease within 6 months prior to randomization
• Evidence of active Grade >2 acute GVHD
• Presence of non-minor uncontrolled or progressive bacterial, viral or fungal infections
• Known history or current (suspected) diagnosis of CRS requiring treatment associated with the administration of peptides, proteins, and/or antibodies
• Ongoing therapy with high-dose systemic corticosteroids (ie, prednisone equivalent dose >0.5 mg/kg/day) within 24 hours prior to dosing
• Relapse of primary malignancy other than minimal residual disease Note: Other protocol defined Inclusion/Exclusion criteria may apply.