It Follows Hard On The Heels Of The Combination Treatment Toca 511 & Toca Fc Winning Fast Track Designation Just Last Month Assisting The Company In Its Quest To Further Advance The Drug'S Development.Glioblastoma Is The Most Common Type Of Brain Cancer, And Most Aggressive, With More Than 10,000 New Cases Every Year In The United States. However Once Diagnosed, Patients Have A Five-Year Survival Rate Of Less Than 5%.Harry Gruber, Ceo Of Tocagen, Said: