Rats: increased lymphocytes, neutrophils and NK cells; anti-drug antibodies affected exposure
“Increases in lymphocytes, neutrophils, and NK cells were also noted in rats. The rats did appear to develop an anti-drug antibody response which affected the pharmacokinetics of dinutuximab, particularly at the lowest dose level.”
✓ VerifiedFDA pharmacology/toxicology review, p. 2Source ↗
Biodistribution & persistence
Human TCR: membrane binding in kidney, GI, spleen, GALT, ovary, neurons and brain
“Conclusion: Membrane/membrane granules of kidney, GI, spleen, GALT, ovary, neurons, cerebrum, and brain were identified as ch14.18-target tissues in humans.”
✓ VerifiedFDA pharmacology/toxicology review, p. 50Source ↗
Modality-specific risk
Neuropathic pain and neuropathy from GD2 binding on peripheral nerves with complement- and ADCC-mediated damage
“Together these data suggest that the clinically reported pain response following administration of dinutuximab is a pharmacologic consequence of dinutuximab binding to peripheral nerves and causing damage through CDC and ADCC.”
✓ VerifiedFDA pharmacology/toxicology review, p. 11Source ↗
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