ImmunoCellular Therapeutics, Ltd. announced that the Board of Directors has appointed John S. Yu, MD, as Interim Chief Executive Officer and President, and has accepted the resignation of Manish Singh, PhD, effective immediately, from the CEO, President, and Board positions. Dr. Yu will continue to serve as Chief Scientific Officer and Chairman of the Board. ImmunoCellular has initiated a search for a permanent chief executive officer.

Dr. Yu is the founder of ImmunoCellular, and has been the major guiding force behind ImmunoCellular's growth and evolution as a company with a unique set of technological and product assets. He is an internationally renowned neurosurgeon, and a recognized expert in cancer immunotherapy, cancer stem cells and malignant brain tumors. He is the inventor of many of the immunotherapeutics licensed by the company from Cedars-Sinai Medical Center.

Dr. Yu is on the faculty of the Department of Neurosurgery at Cedars-Sinai Medical Center.