 By the early 16th century the hopes of the concept becoming Catholic doctrine had receded, and have never seriously revived.In more recent times, the title has received some support from the Catholic Magisterium though it is not included in the concluding chapter of the apostolic constitution "Lumen gentium" of the Second Vatican Council, which chapter many theologians hold to be a comprehensive summary of Roman Catholic Mariology.Some, in particular the adherents of the Amsterdam visions, have petitioned for a dogmatic definition, along with "Mediatrix", and the process for further theological clarification and eventual dogmatic definition is ongoing.