None of the other pharmaceuticals had Dr. Alexandre Vamvakides.
Sigma receptors were investigated in the 1960's for a particular medical issue (I've forgotten which one), and were determined to be unrelated to that issue. Further investigation into sigma receptors was abandoned.
Dr. Vamvakides, a relatively young researcher at the time, realized that the large number of sigma receptors throughout the human body(1) had to have some function(s), and he began working to discover what those functions might be.
Anavex began in 2004 with a portfolio of over 30 sigma-receptor compounds developed by Dr. Vamvakides, lead investor Athanasios (Tom) Skarpelos, and Harvey Lalach as President. Dr. Panos Kontzalis came on as the first CEO in Jan2007. At some point, Dr. Kontzalis resigned, and Dr. Hervé de Kergrohen became the CEO 16Jun2009. Together, they all got A2-73 through it's Phase 1 clinical trial for safety, but Kergrohen and Lalach failed to secure adequate funding to continue.
After a period of dormancy, Skarpeolos took over and secured $10M in funding from Lincoln Park Capital Fund, and just as important, he recruited Dr. Christoper U. Missling as the new CEO. Dr. Missling held an MBA in addition to his PhD, and had significant experience as a CFO at other pharmaceutical companies.
And soon, Anavex will have its first of many FDA approvals. It took a lot of people a lot of work and a lot of years to get us where we are today. And all we investors have to do is be patient.
(1): "Sigma receptors are unique drug-binding proteins, present in the central nervous system as well as in various peripheral tissues. Sigma receptors are found in endocrine, immune, and reproductive tissues and in high density in liver and kidney. Thus, it is likely that sigma receptors have important functions outside the nervous system and sub-serve a more general role than a neurotransmitter receptor" (WD Wayne, Pharmaceutica Acta Helvetiae 2000; 74, 211-218).