Table 6.

The top 10 most frequent keywords related to immunotherapy for GC from 2012–2022.

Rank	Keyword	Occurrences
1	Expression	233
2	Prognosis	116
3	Survival	107
4	T-cells	105
5	Microsatellite instability	96
6	Nivolumab	89
7	Cells	87
8	Blockade	85
9	Therapy	84
10	Pd-L1	80

GC: gastric cancer.