Pfenex and commercial partner Alvogen could face a delay in obtaining an ‘A’ therapeutic equivalence rating for the 505(b)(2) hybrid rival to Eli Lilly’s Forteo teriparatide brand for which they hope to obtain US approval in early October. The US Food and Drug Administration recently told Pfenex that it might be premature to comment on the firm’s protocol for a comparative human factors study for the drug-device combination until the label details for the PF708 teriparatide candidate have been agreed, which may be close to the osteoporosis treatment’s Prescription Drug User Fee Act target date of 7 October 2019.
Stressing that it was discussing the situation with the agency, Pfenex admitted: “Depending on the outcome, it may delay the...








