Mouse used with mouse surrogate virus because human GM-CSF does not bind mouse receptor; human GM-CSF not bioactive in mice
“The expressed human GM-CSF is not bioactive in the mice, thus the findings are likely not related to exposure to this human protein.”
✓ VerifiedFDA pharmacology/toxicology review, p. 74Source ↗
Surrogate molecule
Yes: mouse surrogate HSV-1 encoding murine GM-CSF (OncoVEXmGM-CSF) for pharmacology; clinical virus used in tox
“A mouse surrogate HSV-1 vector encoding the murine GM-CSF (OncoVEXmGM-CSF; JS1/34.5-/47-/mGM-CSF) was developed and used for the in vivo mouse studies because of the inability of human GM-CSF to bind to mouse GM-CSF receptor.”
Mouse (BALB/c, up to 12 weeks); additional single-dose studies in rats and dogs
“The nonclinical toxicology studies consisted of general toxicity studies up to 12 weeks in mice and an embryo-foetal development study in mice. Additional single dose studies were also conducted in rats and dogs.”
“The potential for reproductive or developmental toxicity of talimogene laherparepvec was evaluated in an embryo-foetal toxicity study conducted in the mouse.”
Yes: mouse surrogate HSV-1 encoding murine GM-CSF (OncoVEXmGM-CSF) for in vivo mouse studies
“A mouse surrogate HSV-1 vector encoding the murine GM-CSF (OncoVEXmGM-CSF; JS1/34.5-/47-/mGM-CSF) was developed and used for the in vivo mouse studies because of the inability of human GM-CSF to bind to mouse GM-CSF receptor.”