AC Immune SA announced that Dr. Andreas Muhs, Chief Scientific Officer, will take a medical leave of absence, starting immediately. During the leave of absence, AC Immune's research team will be led by Dr. David Lowe on an interim basis. Dr. Lowe has served as AC Immune's Deputy Chief Scientific Officer and more recently as Innovation Fellow since January 2014. While he is on medical leave, Dr. Muhs will stay involved with AC Immune's research team to the extent practical, and he will re-assume his role as soon as he has recovered.