TABLE 2.

Response rates for enrolled patients and for histology‐based subsets.

Response rate a	Group A			Group B
	n	%	95% CI	n	%	95% CI
Total enrolled patients	39			39
Overall response	8	20.5	9.3 to 36.5	9	23.1	11.1 to 39.3
Complete response	0	0		0	0
Partial response	8	20.5		9	23.1
Stable disease	14	35.9		15	38.5
Progressive disease	15	38.5		13	33.3
Not evaluable	2	5.1		2	5.1
Squamous subset	9			11
Overall response	0	0	0.0 to 33.6	3	27.3	6.0 to 61.0
Complete response	0	0		0	0
Partial response	0	0		3	27.3
Stable disease	4	44.4		5	45.5
Progressive disease	5	55.6		2	18.2
Not evaluable	0	0		1	9.1
Nonsquamous subset	30			28
Overall response	8	26.7	12.3 to 45.9	6	21.4	8.3 to 41.0
Complete response	0	0		0	0
Partial response	8	26.7		6	21.4
Stable disease	10	33.3		10	35.7
Progressive disease	10	33.3		11	39.3
Not evaluable	2	6.7		1	3.6

^aObjective response by investigator review per Response Evaluation Criteria in solid tumors, version 1.1.