Neutropenic mouse and immunocompetent rat pyelonephritis infection models
“In vivo nonclinical infection model studies summarized below evaluated the bactericidal effects of tebipenem using clinically relevant dosing regimens in neutropenic mouse and immunocompetent rat pyelonephritis models.”
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
FDA: bacterial killing supports activity at clinical exposures, but not benchmarked against a validated positive control, limiting translation
“In conclusion, observed bacterial killing in the AP model suggests TBPM antibacterial activity at the clinically relevant exposures anticipated with the proposed dosing regimen. However, the observed bacterial reductions were not benchmarked against a clinically validated positive control”