Determining the Relationship Between Clofazimine Gastrointestinal Levels and anti-CryptosporidiumEfficacy in Mice.

A clofazimine PBPK model was generated in mice to simulate clofazimine levels in plasma and the GI tract. By incorporating clofazimine efficacy data from a mouse model of Cryptosporidium infection, we identified a relationship between tissue drug concentrations and reduction in infection burden. Establishing a PK/PD relationship informed by GI drug levels will assist future drug development efforts for cryptosporidiosis.