Boehringer Ingelheim on Thursday said it will lay off some of its salesforce due to poor U.S. sales of its biosimilar version of AbbVie’s blockbuster arthritis treatment Humira. The German drugmaker said it planned to reduce its customer-facing teams in favor of a hybrid in-person and virtual sales model by June 30, in large part because pharmacy benefit managers (PBMs) had kept branded Humira on their lists of medicines for reimbursement. That choice has led to less uptake of biosimilar versions of Humira in the United States, including Boehringer's Cyltezo, it said.