Background
Methods
Patient selection and the collection of clinicopathological parameters
HCC (624) | cHC-CCA (31) | IHCCA (239) | EHBCA (19) |
p-value | |||
---|---|---|---|---|---|---|---|
Stem cell (16) | Classical (15) | CLC(24) | Non-CLC(215) | ||||
Sex (M:F ratio) | 4.9 | 2.2 | 14 | 2 | 2.9 | 1.1 |
0.001*
|
Male | 518(83) | 11(69) | 14(93) | 16(67) | 160(74) | 10(53) |
0.001*
|
Female | 106(17) | 5(31) | 1(7) | 8(33) | 55(26) | 9(47) | |
Age (year, mean ± SD) | 54 ± 10 | 51 ± 12 | 58 ± 8 | 60 ± 10 | 62 ± 9 | 58 ± 12 |
<0.001*
|
Chronic liver disease | 593(95) | 16(100) | 12(80) | 12(50) | 39(18) | 0(0) |
<0.001*
|
Viral | 557(94) | 10(63) | 9(75) | 7(58) | 27(69) | 0(0) |
<0.001*
|
Non-viral | 36(6) | 5(31) | 3(25) | 5(42) | 12(31) | 0(0) | |
pT stage (AJCC 7th) | |||||||
pT1 | 256(41) | 9(56) | 3(20) | 7(29) | 81(38) | 1(5) |
0.01*
|
pT2-pT4 | 360(58) | 7(44) | 12(80) | 17(71) | 131(61) | 17(89) | |
Progress | |||||||
Recur or metastasis | 395(63) | 7(44) | 10(67) | 11(46) | 144(67) | 12(63) |
<0.001*
|
PFS (median, month) | 26 | 103 | 12 | NA | 11 | 20 |
<0.001*
|
Death | |||||||
Deceased | 352(56) | 6(38) | 10(67) | 6(25) | 110(51) | 18(95) |
<0.001*
|
OS (median, month) | 77 | 91 | 21 | NA | 61 | 18 |
<0.001*
|
Construction of tissue microarrays and immunohistochemical staining
Statistical analysis
Results
Differences in clinicopathological features according to histological type
Expression of YAP1 in 8 disease groups
Number | Negative | Positive |
P-value
| |
---|---|---|---|---|
CK19(−) HCC | 491 | 482 (98) | 9 (2) |
<0.001*
|
CK19(−) scirrhous HCC | 32 | 31 (97) | 1 (3) | |
CK19(+) HCC | 101 | 91 (90) | 10 (10) | |
Stemness-feature Carcinoma | 40 | 38 (95) | 2 (5) | |
Combined HC-CCA, stem cell feature | 16 | 15 (94) | 1 (6) | |
Cholangiolocellular IHCCA | 24 | 23 (96) | 1 (4) | |
Combined HC-CCA, classical type | 15 | 15 (100) | 0 (0) | |
IHCCA, non-cholangiolocellular | 215 | 192 (89) | 23 (11) | |
EHBCA | 19 | 15 (79) | 4 (21) |
Clinicopathological characteristics of HCCs and IHCCAs with positive YAP1 expression
N (%) |
p-value | ||
---|---|---|---|
Sex |
Male[518] vs. Female[106]
| 16(3) vs. 4 (4) |
0.715
|
Age (yr) |
≤55[324] vs. >55[300]
| 9(3) vs. 11 (4) |
0.681
|
Size (cm) |
≤5.0[379] vs. >5.0[235]
| 12(3) vs. 8 (3) |
0.872
|
Multiplicity |
Single[449] vs. Multiple[169]
| 11(2) vs. 9 (5) |
0.072
|
Vascular invasion |
Absent[330] vs. Present[286]
| 10(3) vs. 10 (3) |
0.745
|
Large vessel invasion |
Absent[578] vs. Present[37]
| 18(3) vs. 2 (5) |
0.446
|
pT stage (AJCC 7th) |
pT1–2[486] vs. pT3–4[138]
| 16(3) vs. 4 (3) |
0.982
|
ES nuclear grade |
1–2[300] vs. 3–4[313]
| 4(1) vs. 15 (5) |
0.014*
|
Preoperative treatment |
Done[261] vs. Not done[315]
| 13(5) vs. 6 (2) |
0.114
|
Serum AFP (ng/ml) |
≤32[309] vs. >32[289]
| 4(1) vs. 14 (5) |
0.011*
|
Cell type |
Hepatic[539] vs. Non-hepatic[61]
| 17(3) vs. 2 (3) |
0.958
|
Histologic pattern |
Trabecular/acinar[487] vs. Compact[113]
| 12(2) vs. 7 (6) |
0.041*
|
Desmoplastic stroma |
Absent[462] vs. Present[113]
| 9(2) vs. 9 (8) |
<0.001*
|
Expression of CK19 |
Negative[523] vs. Positive[101]
| 10(2) vs. 10 (10) |
<0.001*
|
Etiology of CLD |
Viral[557] vs. Non-viral[36]
| 19(3) vs. 0 (0) |
0.621
|