Bradanicline (formerly known as ATA-101 or TC-5619), a selective full agonist for the alpha7 neuronal nicotinic receptor (NNR) subtype was developed for the treatment of central nervous system diseases and disorders. Bradanicline participated in phase II clinical trials for patients with negative and cognitive symptoms of schizophrenia; however, results did not support a benefit of the drug. The development was also discontinued for Alzheimer's disease and attention-deficit hyperactivity disorder. In addition, it was announced that the first patient had been treated in Phase 2 clinical trial in chronic cough with bradanicline. Phase 2 will test the efficacy and safety of bradanicline in up to 49 patients with refractory chronic cough. Refractory chronic cough is defined as a cough that persists for eight weeks or more. In the plans will conduct additional clinical trials to test the safety and efficacy of bradanicline.