Cocrystal Pharma, Inc. announced changes to its board of directors. Dr. Raymond F Schinazi, who has served as chairman or co-chairman of Cocrystal's board of directors has elected to retire from the board on February 1, 2019. He will become a special advisor to the CEO and also serve on the scientific advisory board. The board of directors has appointed Dr. Gary Wilcox to serve as chairman, in addition to his position as CEO, effective on February 1, 2019. The company also announced that Dr. David Block has also elected to retire from the board on January 4, 2019.