Glabellar lines. In December 2018, we announced top-line results for the SAKURA 3 open-label, long-term safety study. DAXI appeared to be generally well-tolerated with no new tolerability or safety concerns reported. We held a pre-BLA meeting with the U.S. Food and Drug Administration (“FDA”) in December 2018 to agree upon the content and format of the BLA. We are in the process of compiling one of the largest clinical data packages for an aesthetic indication. We have been working in parallel to develop a 100-unit vial in addition to an initial 50-unit vial. This added additional work streams for process validation and stability. We expect to submit the BLA in November 2019, and are on track for a 2020 approval and launch for DAXI for the treatment of glabellar lines. We plan to file marketing applications in the European Union, Canada, and certain Latin American and Asian countries after filing in the U.S.
2020 operating expenses are expected to be $220-230M (of which $95-100M is for R&D). There is no specific guidance for 2020 product revenue from either Teoxane fillers or Daxi, but any product revenue in 2020 would offset the $220-230M of operating expenses and reduce cash burn accordingly. Also, any milestone payments received from MYL for the Botox-biosimilar program would offset cash burn.