Ex vivo kallikrein inhibition in plasma from HAE patients
“Finally, BCX7353 was shown to inhibit kallikrein activity ex-vivo from subjects with HAE, with a range of EC50s slightly higher than in normal human plasma, ranging from 11.7 to 20.0 nM, and a mean EC50 of 15.9 ± 0.57 nM (Study BR-7353-006-REV-01).”
Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.
Reviewer's view of the efficacy data
EMA: limited in vitro package without in vivo studies accepted as sufficient proof of concept
“A limited primary pharmacodynamics package was presented and no in vivo studies were included, but the scientific rationale for inhibiting plasma kallikrein activity in the treatment of in HAE is accepted, and the in vitro proof of concept data are considered sufficient non-clinical data to support the use of BCX7353 in HAE.”