Population Pharmacokinetics and Exposure–Response Relationships of Etrolizumab in Patients with Moderately-to-Severely Active Crohn’s Disease J Clin Pharmacol. 2025 May 22. Online ahead of print. Moein A, Ribbing J, Ibrahim MMA, Zhang W, Kassir N. GIInflammationJournalMIDDPharmacometricsRegulatory interactionsSpecial considerations Pharmetheus Affiliates Principal Consultant & Client Operations Expert Jakob Ribbing See bio