Mainstay Medical Announces Completion of Day 100 Meeting with FDA Regarding Pre-Market Approval (PMA) Application for ReActiv8

Mainstay Medical International plc (“Mainstay” or the “Company”, Euronext Paris: MSTY.PA and Euronext Growth operated by Euronext Dublin (MSTY.IE), a medical device company focused on bringing to market ReActiv8, an implantable restorative neurostimulation system to treat disabling Chronic Low Back Pain, today announced that on 10 December 2019 the Company completed a Day 100 meeting with the U.S. Food and Drug Administration (FDA) regarding a Pre-Market Approval (PMA) application submission for ReActiv8.

Jason Hannon, CEO of Mainstay, said: “We appreciate the opportunity to meet with FDA to discuss their review of the data we included in the PMA. The productive dialogue will help us submit an amendment to the PMA to reflect FDA’s feedback. We continue to expect a decision regarding approval around the end of 2020.”

FDA generally meets with the PMA sponsor approximately 100 days after filing of the PMA for the purpose of discussing the status of the review of the application. Prior to the meeting, FDA provided Mainstay with its initial feedback on the PMA, consisting of questions regarding the data included in the PMA and the interpretation of such data. The Company currently has no plans to conduct another premarket pivotal IDE trial for ReActiv8.

Mainstay will include the information requested by FDA in an amendment to the PMA, which the Company expects to file in the first quarter of 2020.