On July 28, the FDA approved the country’s first interchangeable biosimilar product. Semglee (insulin glargine-yfgn) is both biosimilar to, and interchangeable with, its reference product Lantus (insulin glargine).
Under the Biologics Price Competition and Innovation Act (BPCIA), biological products (e.g., vaccines and therapeutic antibodies) may come to market by showing that they are “biosimilar” to or “interchangeable” with a “reference product,” which is a biological product that has already been approved by the FDA. A biological product is “biosimilar” if it is “highly similar to the reference product notwithstanding minor differences in clinically inactive components” and “there are no clinically meaningful differences between the biological product and the reference product in terms of the safety, purity, and potency of the product.” 42 U.S.C. § 262(i)(2). To date, 28 biological products have been approved as biosimilars.