Rat study: highest PEG level in liver (7% of dose); no TNF-associated tissue uptake of PEG
“The highest level of PEG was detected in the liver (7% of the dose administered). There was no indication of tissue uptake of PEG, associated with binding to membrane bound TNF alpha.”
Lymphoma/malignancy risk from long-term TNF-α inhibition
“the possible risk for the development of lymphomas or other malignancies in patients treated with TNF antagonists is reflected in the SPC and PL, and warrants post marketing surveillance.”
In vitro whole-blood cytokine release far below alemtuzumab/TGN1412 controls; no effects on monkey TDAR, lymphocyte subsets or serum cytokines; ADA in some monkeys