The FDA accepted a BLA for HLX14, a biosimilar of denosumab, based on comparative quality and clinical studies. HLX14 met primary endpoints in a phase 3 trial, showing efficacy and safety in osteoporosis treatment. In March 2024, the FDA approved two denosumab biosimilars from Sandoz, marking the first approvals for biosimilars of Prolia and Xgeva.