New Clinical Trials for Ustekinumab & Denosumab Biosimilars Begin Recruitment Michele B. Kaufman, PharmD, BCGP | March 17, 2021Clinical trials of biosimilar treatments, including a phase 1 study of SB17, which is biosimilar to ustekinumab, and two phase 3 studies investigating of SB16, which is biosimilar to denosumab, are currently recruiting.