Research Article

Hyperprogressive Disease Caused by PD-1 Inhibitors for the Treatment of Pan-Cancer

Table 1

Association between clinical categorical variables and HPD for immunotherapy-treated patients (n, %).

VariableNon-HPD ()HPD ()

Age (y)0.696
 ≥60145 (42.8)15 (39.5)
 <60194 (57.2)23 (60.5)
Smoking history0.091
 Ever-smoker138 (40.9)21 (55.3)
 Never-smoker199 (59.1)17 (44.7)
 Missing20
Smoking exposure (pack-years)0.737
 >3089 (26.4)11 (28.9)
 ≤30248 (73.6)27 (71.1)
 Missing2
Surgical history0.800
 Yes159 (46.9)17 (44.7)
 No180 (53.1)21 (55.3)
PD-L1 positivity0.173
 Positive185 (64.0)20 (52.6)
 Negative104 (36.0)18 (47.4)
 Missing500
Response to line before immunotherapy0.034
 PR9 (2.6)0 (0.0)
 SD125 (36.9)7 (18.4)
 PD205 (60.5)31 (81.6)
Number of metastatic sites0.000
 0-1227 (67.0)14 (36.8)
 ≥2112 (33.0)24 (63.2)
ECOG performance status0.007
 ≥212 (3.5)5 (13.2)
 0-1327 (96.5)33 (86.8)
Neutrophil-to-lymphocyte ratio0.726
 >3124 (36.6)15 (39.5)
 ≤3215 (63.4)23 (60.5)
Lactate dehydrogenase level0.028
 ≤upper limit of normal222 (65.5)18 (47.4)
 >upper limit of normal117 (34.5)20 (52.6)
Liver metastasis0.000
 Present97 (28.6)24 (63.2)
 Absent242 (71.4)14 (36.8)

HPD: hyperprogressive disease; PD-L1: programmed cell death 1 ligand 1; PR: partial response; SD: stable disease; PD: progressive disease; ECOG: Eastern Cooperative Oncology Group.