Surrogate DC101 in human gastric cancer xenografts (NCI-N87, MKN-45) and primary gastric tumor fragments in athymic mice
“DC101 alone significantly inhibited the in vivo tumor growth of both NCI-N87 and MKN-45 gastric carcinoma cells. In addition, DC101 administered as a monotherapy inhibited 10 of 17 human primary gastric tumor fragments implanted into athymic mice.”
✓ VerifiedFDA pharmacology/toxicology review, p. 84Source ↗
Why that model
Ramucirumab does not cross-react with mouse VEGFR2, so antitumor activity could not be studied in mice
“Since ramucirumab is not cross-reactive with mouse VEGFR2, its antitumor activity and anti-angiogenic mechanism of action could not be studied in the mouse.”
✓ VerifiedFDA pharmacology/toxicology review, p. 18Source ↗
Reviewer's view of the efficacy data
FDA: surrogate DC101 data provide proof of concept that anti-VEGFR2 treatment can inhibit growth of multiple tumor types
“The use of its murine surrogate, DC101, provides a proof-of-concept data that treatment with an anti-VEGFR2 antibody such as ramucirumab has the potential to inhibit the growth of a number of tumors derived from different tissues, alone or in combination with other chemotherapeutics.”
✓ VerifiedFDA pharmacology/toxicology review, p. 87Source ↗