Whether Anavex withdraws and creates their own “end” is not likely @ CS1. It is however likely that Anavex will be asked/required to answer “some” concerns/clarifications of the EMA. It seems logical to assume that another applicant (falling into the 17%) was unable to continue beyond that point.
Personal take….The quicker Anavex is able to satisfy those concerns because they are prepared IS VERY important. ANY significant delay will support the incompetent narrative and 17% inclusion.