Table 1. GO and KEGG analysis of PD-1 co-expressing genes.

Term	Description	Count	P-value
GO:0006955	immune response	20	2.03E-14
GO:0007165	signal transduction	13	0.005114
GO:0006954	inflammatory response	11	6.85E-06
GO:0002250	adaptive immune response	9	3.09E-07
GO:0033209	tumor necrosis factor-mediated signaling pathway	8	9.46E-07
GO:0050852	T cell receptor signaling pathway	8	4.31E-06
GO:0032496	response to lipopolysaccharide	7	9.14E-05
GO:0007166	cell surface receptor signaling pathway	7	0.001403
GO:0006915	apoptotic process	7	0.040946
GO:0031295	T cell costimulation	6	2.54E-05
hsa04060	Cytokine-cytokine receptor interaction	12	2.99E-07
hsa05340	Primary immunodeficiency	5	6.42E-05
hsa04514	Cell adhesion molecules (CAMs)	7	0.000292
hsa05321	Inflammatory bowel disease (IBD)	5	0.000763
hsa04640	Hematopoietic cell lineage	5	0.002395
hsa05323	Rheumatoid arthritis	5	0.002498
hsa04612	Antigen processing and presentation	4	0.013188
hsa04660	T cell receptor signaling pathway	4	0.027223
hsa04940	Type I diabetes mellitus	3	0.030529
hsa05168	Herpes simplex infection	5	0.030930