Timely New Information on Next-Generation Tetracyclines – Part 2: Eravacycline and Protein Binding

A recent paper by Thabit describes a curious finding [1]. The authors measured total and free (i.e., nonprotein-bound) eravacycline levels at ascending doses in a mouse model. They found strikingly small increases in free drug levels when titrating up total doses. The effect was rather dramatic: an increase in protein binding from 12% Continue reading Timely New Information on Next-Generation Tetracyclines – Part 2: Eravacycline and Protein Binding

Quo Vadis, CDI Drugs?

There are only 3 CDI drugs in wider clinical use: vancomycin, metronidazole, and fidaxomicin. They are from totally different classes and have almost nothing in common except for proven efficacy in C. difficile infection (CDI). Like vancomycin, the entire group of glycopeptide drugs seems to have good activity against C. Continue reading Quo Vadis, CDI Drugs?

Polyphor POL7080 And The Journey to The Land of Pyocyanea  (Part 2)

Roche’s current Phase 2 program is strangely ambiguous. RG-7929 has not made it into www.clinicaltrials.gov yet, only POL7080 is listed. An uncontrolled open label study in “patients with non-CF acute exacerbation of bronchiectasis due to P. aeruginosa requiring IV treatment” is enrolling. Well, good luck finding those patients! At best, Continue reading Polyphor POL7080 And The Journey to The Land of Pyocyanea  (Part 2)