Tilfælde af BK- virus associeret med nefropati såvel som tilfælde af JC- virus associeret med progessiv multifokal leukoencefalopati (PML) er blevet rapporteret hos patienter, der behandles med immunosuppressiva herunder CellCept.
Cases of BK virus associated nephropathy, as well as cases of JC virus associated progressive multifocal leucoencephalopathy (PML), have been reported in patients treated with immunosuppressants, including CellCept.