Table 1

Patient characteristics

Characteristic	Anti-CTLA4 (n=17)	Anti-PD1 (n=16)	P value
Age (years)
Median	66	63	0.866
Range	38–80	37–91
Race
White	15	14	0.998
Black	1	1
Asian	1	1
Sex
Male	10	12	0.325
Female	7	4
Tumor histology
Adenocarcinoma	14	12	0.606
Squamous cell carcinoma	3	4
Smoking history
Yes	12	13	0.475
No	5	3
KPS score at diagnosis
≥80	9	14
<80	8	2	0.057
Prior systemic therapy
Yes	14	9	0.103
No	3	7
Number of systemic therapy regimens, mean (range)	2.12 (0–8)	1.13 (0–4)	0.157
Prior radiation therapy
Yes	3	5	0.362
No	14	11
Prior immunotherapy
Yes	2	2	0.9
No	15	14
History of autoimmune disease
Yes	1	1	0.736
No	16	15
Metastatic sites mean (range)	3.1 (2–9)	2.4 (2–6)	0.207
ALC change mean (range)	−28% (1% to −70%)	−19% (−3% to −63%)	0.148