Study of Atezolizumab and Bevacizumab With Y-90 TARE in Patients With Unresectable Hepatocellular Carcinoma (HCC)

"This plan will involve treating the predominant liver lesions with segment Y-90 TARE using predetermined dosimetry, while keeping FLR equal or greater than 40% (FLR is estimated by excluding the liver volume of Y-90 infused distribution).~The maximal amount of Y-90 TARE treatment will be limited to only one lobe of the liver if segmental Y-90 TARE is not possible to treat the predominant lesion. Since segmental Y-90 TARE may result in less long term liver damage compared to lobal Y-90 TARE, segmental Y-90 TARE treatment is preferred to lobar Y-90 TARE if segmental Y-90 TARE treatment is able to treat all blood supply to the predominant lesion or lesion with vascular invasion to preserve liver function. For segmental treatment, a minimum tumor dose of 190 Gy should be used for glass microspheres and 120 Gy for resin microspheres. For lobar treatment, a minimum dose of 100 Gy should be used for resin microspheres."

Atezolizumab 1200 mg will be delivered as an IV infusion on Day 1 of each cycle (every 3 weeks). The initial dose will be delivered over 60 (± 15) minutes and if tolerated subsequent infusions may be given over 30 minutes.

Bevacizumab 15 mg/kg will be delivered as an IV infusion on Day 1 of each 3 week cycle.The initial dose will be delivered over 90 minutes (±15 minutes) and if tolerated subsequent infusions may be given over 60 minutes