Proton Beam Radiotherapy Followed by Tecentriq and Avastin for Primary Liver Cancer With Vp2-4 Portal Vein Invasion

"Atezolizumab 1200 mg and bevacizumab 15 mg/Kg is administered IV infusion every 3 weeks.~Proton beam therapy 30 - 50 Gy/5 fractions to portal vein tumor thrombosis with or without main primary tumor after 1 week (+/- 7 days) of 2nd cycle of atezolizumab and bevacizumab~The follow-up phase begins when the decision to discontinue study is made. The follow-up phase is defined as the day after the end of study treatment until the day the subject dies."