More than 55 million people worldwide suffer from dementia. Alzheimer disease (AD) is the main cause of this fatal disorder, without any effective disease-modifying therapy. Early diagnosis and lifestyle modifications can significantly reduce care and treatment costs. There is no conceptual plan for implementing modern diagnostic methods in clinical practice in Czechia and Slovakia. The interaction between universities and the private sector in developing molecular diagnostic tools is fragmented and lacking. A limited number of talented students are invested in applied AD-focused research. The aim of ADDIT-CE is to interlink two ecosystems in Brno and Bratislava region, embracing the full quadruple helix of innovation-driving actors: excellent scientific teams from Masaryk University, and Slovak Academy of Sciences, collaborating with top biotech companies: Geneton, BioVendor, and MultiplexDX. Societal actors will be represented by organizations such as Slovak and Czech Alzheimer Societies, Memory Center, and Czech Brain Aging Study. The regional government will be involved via the Ministry of Health Slovak Republic and the South Moravian Innovation Centre. The joined ecosystems will unite R&I activities focusing on new diagnostic methods and their applications and further interlink academia and business spheres by creating a pilot industrial PhD program. ADDIT-CE will generate a joint cross-border strategy covering basic and applied research activities aiming at accelerating the development of new tools for preclinical AD diagnostics and lifestyle/pharmacological intervention monitoring. New cutting-edge technologies will be transferred into clinical practice. Results of ADDIT-CE will be used to develop the Slovak National Plan to Combat Dementia, to enrich the Czech National Plan for AD, and will be widely disseminated to end users and society. ADDIT-CE will join forces with the involved ecosystems to revolutionize diagnostic approaches in both countries.