Figure 1.

Selection process for studies included in the systematic literature review (PRISMA diagram). *Studies in second-line or later settings were included for qualitative synthesis. Studies based on frontline treatment or where line of treatment was not explicitly reported were summarized separately. Abbreviations: 1L, first line; 2L, second line; GC, gastric cancer; GEJC, gastro-oesophageal junction carcinoma; mCRC, metastatic colorectal cancer; NET, neuroendocrine tumors; NR, not reported; TiAb, title/abstract; Tx, treatment.