Table 2.

Characteristics of baseline tumor burden according to RECIST 1.1

Number of target lesions
Median [IQR]	3.0 [2.0–4.0]
Number of organs involved
Median [IQR]	2.0 [1.0–3.0]
Total diameter of target lesions (total BTS)
Median [IQR]	96.5 [55.3–144.7]
Maximum diameter of target lesions (max BTS)
Median [IQR]	49.1 [34.0–69.8]
Mean diameter of target lesions
Median [IQR]	34.7 [24.5–45.0]
Site of largest target lesions, n (%)
Primary lesion	158 (60.1)
Bone	21 (8.0)
Pleura	19 (7.2)
Liver	15 (5.7)
Intrathoracic lymph node	11 (4.2)
Adrenal gland	10 (3.8)
Lung (metastasis)	10 (3.8)
Extrathoracic lymph node	5 (1.9)
Brain	2 (0.8)
Other	12 (4.6)

RECIST 1.1 Response Evaluation Criteria in Solid Tumors guidelines version 1.1, IQR interquartile range, BTS baseline tumor size