Key Takeaways AbbVie has submitted an FDA application for tavapadon to treat Parkinson's disease.TEMPO studies showed tavapadon improved symptoms across a broad Parkinson's disease population.If approved, tavapadon would be AbbVie's second recent Parkinson's therapy clearance.AbbVie (ABBV) announced that it has submitted a regulatory filing with the FDA, which seeks approval for its investigational drug tavapadon as a once-daily oral treatment for Parkinson’s disease (PD).The FDA filing is supported by resu ...