On 18 August 2026, Biocon announced that it has received supplemental FDA approval for Yesintek®, biosimilar to Janssen’s Stelara® (ustekinumab), in a single-dose prefilled autoinjector format (45 mg/0.5 ml and 90 mg/ml).
Biocon first launched Yesintek® in the US in February 2025 (in PFS and vial presentations), following Yesintek®’s original FDA approval in November 2024. The timing of Biocon’s US launch was governed by a US settlement and licence agreement with Janssen (entered in February 2024), including to resolve an Inter Partes Review Petition.
There are currently seven other FDA-approved ustekinumab biosimilars in the US market: Amgen’s Wezlana® (FDA-approved October 2023; launched January 2025), Dong-A ST/Accord BioPharma’s Imuldosa® (FDA-approved October 2024; launched August 2025; added to ESI’s commercial formulary December 2025), Alvotech/Teva’s Selarsdi® (FDA-approved April 2024; launched February 2025; interchangeability status May 2025), Samsung Bioepis’ Pyzchiva® (FDA-approved July 2024; launched February 2025), Formycon/Fresenius Kabi’s Otulfi® (FDA-approved September 2024; launched March 2025), Celltrion’s Steqeyma® (FDA-approved December 2024; launched March 2025) and Hikma’s Starjemza™ (FDA-approved May 2025; launched November 2025).