Inclusion criteria | - confirmed CLL, low-grade NHL or high-grade NHL |
 | - CD20 positivity |
 | - relapsed or refractory disease > 60 days after allogeneic transplantation |
 | - adequate hematological, liver and kidney functions |
 | - platelet count ≥ 25 G/l |
 | - ECOG performance status ≤ 2 |
 | - negative pregnancy test (adequate contraception during study in women of child bearing potential) |
Exclusion criteria | - anti-CD20 or anti-T cell antibody treatment < 3 months before FBTA05 treatment |
- positivity for human anti-mouse antibodies | |
- history of GVHD °III or °IV, or GVHD requiring steroid therapy with ≥ 10 mg / day | |
- known hypersensitivity to recombinant murine or rat proteins | |
- acute or uncontrolled chronic infections, viral infections at risk of reactivation (e.g. HCV, HBV, HIV) | |
- patients unable or unwilling to comply fully with the protocol |