Determine the Safety, Tolerability, and Efficacy of MAU868 for the Prevention of BK Virus Infection in Kidney Transplant Recipients

Inclusion criteria; * Male or female recipients of a first or second kidney or kidney-pancreas transplant who weigh at least 30 kg and are at least 7 years of age (in the US, 18 years of age or above) at the time of transplantation. * Recipients of organs from a heart-beating deceased, non-heart-beating deceased, living unrelated, or human leukocyte antigen (HLA)-mismatched living related donor. * Recipients who are treated with lymphocyte-depleting induction therapy (e.g., rabbit antithymocyte globulin, alemtuzumab). Subjects treated with rabbit antithymocyte globulin must receive a total dose of at least 3 mg/kg. Subjects treated with alemtuzumab must receive a total dose of at least 20 mg. * Recipients of a kidney with a cold ischemia time (CIT) \<36 hours. Exclusion Criteria: * Recipients of organs from identical twins or living, HLA-matched, related donors. * ABO incompatible or complement-dependent lymphocytotoxic (CDC) crossmatch positive transplant (isolated positive B cell crossmatches are not an exclusion criterion). * Recipients who are treated with non-lymphocyte-depleting induction therapy (e.g., basiliximab) or no induction therapy. * Recipients who are treated or planned to be treated with mTOR inhibitors as part of their initial immunosuppression regimen post-transplantation. * Recipients who require antibody-depletion prior to transplantation and in the opinion of the investigator are likely to require antibody-depletion after transplantation. Antibody-depleting therapies include but are not necessarily limited to plasmapharesis, immunoadsorption, and IVIg. * Pregnant or nursing (lactating) women, where pregnancy is defined as the state of a female after conception and until the termination of gestation, confirmed by hCG testing. * Current clinical, radiographic, or laboratory evidence of active or latent tuberculosis (TB) or any history, in the opinion of the investigator, that confers a risk of reactivation of TB and precludes the use of conventional immunosuppression. * History of splenectomy or asplenia. * Women of child-bearing potential, defined as all women physiologically capable of becoming pregnant, unless they are using basic methods of contraception during dosing of investigational drug.