CD274 and neoplasm: To assess PD-L1 tumor surface expression as potential biomarker, the patients have to undergo 89Zr-atezolizumab iPET at baseline and after induction therapy (R-CHOP) and at suspected relapse during or after consolidation treatment with atezolizumab (treatment trial HOVON 151) (NCT03850028) (https://clinicaltrials.gov, accessed on 17 December 2020).