Reference number of the aid programme: SA.41471(2015/X) Purpose of public aid: Article 25 of EC Regulation No 651/2014 of 17 June 2014 declaring certain types of aid compatible with the internal market in the application of Articles 107 and 108 of the Treaty (OJ L. I'm sorry. EU L 187/1 of 26.06.2014). Depression is the most common central nervous system disorder. The use of currently available antidepressants is associated with certain restrictions, as therapeutic effects are only seen after a few weeks of regular treatment. In addition, current therapies are associated with restrictions in the form of: risk of side effects and drug resistance. Therefore, there is still a need to develop innovative and safe therapies. A low-molecule TrkB agonist mimics the biological functions of the neurotrophic factor (BDNF), which, given the current state of knowledge, is crucial for achieving a therapeutic effect. The applicant plans to synthesise a new, selective TrkB agonist, which will be selected from the library of compounds by testing receptor interactions, physicochemical properties, in vitro activity and ADMET parameters. In vivo studies, confirming the antidepressant and procognitive effects of the selected agonist, will be conducted on rodents and using dedicated animal models of depression. To confirm the safety of the compound, preclinical pharmacological and toxicological studies will be carried out in accordance with the guidelines of the European Medicines Agency. Confirmation of the safety of the selected compound, together with the establishment of appropriate formulation and dosing, will allow the initiation of the clinical trial phase. Phase I of the clinical trial will assess the safety of the TrkB agonist and determine the recommended dose for Phase IIa. As the final evidence of the candidate’s activity, a phase IIa study will be conducted in patients with depressive disorders