a nonsignificant trendp=0.079
A study of atezolizumab across multiple tumor types found a significant association between treatment response and tumor‐infiltrating immune cell PD‐L1 expression (p=0.007) but a nonsignificant trend between response and tumor cell PD‐L1 expression (p=0.079). 47 There was also a trend for increased PFS with increasing PD‐L1 expression by tumor‐infiltrating immune cells; however, further studies are needed in this area.