AURORA, Colo (KKCO) Holmes enrolled last year in a neuroscience PHd program, but was withdrawing for unknown reasons. University spokesmen say first-year students must take a three-part exam at the end of the academic year to move on, but it's unclear whether Holmes had taken the exam. As part of the program, Holmes was listed as making a presentation in may about micro dna biomarkers in a class named "biological basis of psychiatric and neurological disorders."