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. 2020 Mar 19;9(3):749. doi: 10.3390/cells9030749

Table 1.

Prevalence and distribution of telomerase reverse transcriptase promoter (TERTp) mutations in cancer genomes. The prevalence of TERTp mutations is given as percentage and as total number of cases.

Cancer Type Stage Prevalence of Mutations −146 C>T −124 C>T Tert Upregulation Methods Sample Origin Remarks Ref.
Central nervous system (CNS)
GBM 62%
24/39
25%
6/24
75%
18/24
Yes DNA sequencing,
qRT-PCR, IHC,
Patients
(Portugal)
Associated with older age. [52]
GBM IV 83.9%
47/55
34%
16/47
65.9%
31/47
Yes DNA sequencing,
qRT-PCR, TRAP,
reporter assays
Patients
(China)
Associated with older age. [57]
GBM (Primary) IV 83%
65/78
24.6%
16/65
75.4%
49/65
N/A DNA sequencing Patients
(US American)
Associated with shorter OS,
IDH-wt, ATRX-wt, exclusively in EGFRmut samples.
[77]
GBM I–IV 44.6%
45/101
26.7%
12/45
73.3%
33/45
Yes DNA sequencing,
qRT-PCR,
reporter assays
Patients
(China)
Associated with late-stage disease and patient age.
Only in gliomas, not in pituitary adenocarcinomas, meningiomas or secondary metastases.
[60]
GBM 55%
197/358
27%
54/197
73%
144/197
N/A DNA sequencing Patients
(Switzerland)
Associated with shorter OS and with EGFRmut.
Negatively associated with mutant IDH and TP53.
More frequent in primary (58%) than in secondary GBM (28%).
One patient with both −146 C>T + −124 C>T mutation.
[111]
GBM
(primary & secondary)
IV 80.3%
143/178
* * N/A DNA sequencing Patients Associated with shorter OS in patients without rs2853669 TERT
-245 A>G polymorphism.
Detected in 4/14 (28%) secondary GBM.
[81]
GBM IV 66.9%
141/211
25.5%
36/141
74.5%
105/141
N/A DNA sequencing Patients (Portugal & Brazil) Associated with older age, poor prognosis, and shorter survival.
Reversed by rs2853669 TERT −245 A>G polymorphism.
[85]
GBM 60.4%
29/48
24.1%
7/29
75.8%
22/29
Yes DNA sequencing,
qRT-PCR
Patients (Korea) Associated with older age.
Not associated with OS or DFS.
Associated with MGMT methylation and EGFR amplification.
Associated with rs2853669 TERT −245 A>G polymorphism (21/29 patients).
rs2853669 TERT −245 A>G polymorphism reversed TERT upregulation by TERTp mutations.
[64]
GBM 73%
92/126
28%
26/92
82%
66/92
Yes DNA sequencing,
qRT-PCR, TRAP,
qPCR
Mutually exclusive with IDH-1 mutations.
Associated with shorter telomeres.
Associated with lower OS in IDH-1wt patients.
rs2853669 TERT -245 A>G polymorphism associated with improved OS in patients without TERTp mutations, and with worse OS in patients with TERTp mutations.
[65]
GBM (primary) 86%
79/92
25%
20/79
75%
69/79
DNA sequencing Associated with older age and shorter OS.
Homozygous rs2853669 TERT −245 A>G polymorphism associated with worse OS in patients without and with TERTp mutations.
[84]
GBM and gliomas (primary) 100%
10/10
10%
1/10
90%
9/10
N/A DNA sequencing Patients In primary GBM, characterized by 10q deletion EFGR amplification. [58]
GBM 94%
33/35
36%
12/33
64%
21/33
2.2–286-fold compared to normal astrocytes DNA sequencing,
qRT-PCR
Cell lines [58]
Total GBM 905/1331
(68%)
206/762
(27%)
567/762
(73%)
Oligodendroglioma II 45%
10/22
20%
2/10
80%
8/10
Yes DNA sequencing,
qRT-PCR, IHC
Patients
(Portugal)
[52]
Oligodendroglioma II–III 70%
7/10
14.3%
1/7
85.7%
6/7
Yes DNA sequencing,
qRT-PCR, TRAP,
Reporter Assays
Patients
(China)
Associated with older age. [57]
Oligodendroglioma II–III 46.3%
25/54
24%
6/25
76%
19/25
N/A DNA sequencing Patients
(Portugal &
Brazil)
Associated with older age at diagnosis.
Not associated with lower survival.
[85]
Oligodendroglioma 73.5%
25/34
20%
5/25
80%
20/25
Yes DNA sequencing,
qRT-PCR
Patients
(Japan)
Associated with total 1p19q loss and IDH-1/2 mutations (98%) but
exclusive with IDH-1mut if not total loss of 1p19q.
[53]
Oligodendroglioma II–IV 66.81%
151/226
* * N/A DNA sequencing Patients
(US American)
Associated with shorter OS.
Can be associated with ATRX mutations or IDHmut/1p19q loss.
[80]
Oligodendroglioma II–III 63.2%
12/19
41.7%
5/12
58.3%
7/12
N/A DNA sequencing Patients
(US American)
IDH-wt only.
Associated with worse prognosis in IDH-wt.
Associated with older age.
Mutually exclusive with ATRX mutations.
[77]
Anaplastic
oligodendroglioma
III 54%
13/24
30.8%
4/13
69.2%
9/13
Yes DNA sequencing,
qRT-PCR, IHC,
Patients
(Portugal)
Associated with older age. [52]
Anaplastic
oligodendroglioma
74.2%
23/31
30.4%
7/23
69.6%
16/23
Yes DNA sequencing,
qRT-PCR
Patients
(Japan)
Associated with total 1p19q loss and IDH-1/2 mutations (98%) but
exclusive with IDH-1 if not total loss of 1p19q.
[53]
Anaplastic
oligodendroglioma
III 88.5%
23/26
43.5%
10/23
56.5%
13/23
N/A DNA sequencing Patients
(US American)
Associated with older age.
IDH-wt only.
Associated with worse prognosis in IDH-wt.
Mutually exclusive with ATRX mutations.
[77]
Total
Oligodendroglioma
289/446
(64.7%)
40/138
(29%)
98/138
(71%)
Diffuse astrocytomas 19.2%
10/52
20%
2/10
80%
8/10
Yes DNA sequencing,
qRT-PCR
Patients
(Japan)
Associated with total 1p19q loss and IDH-1/2 mutations (98%) but
exclusive with IDH-1 if not total loss of 1p19q.
[53]
Diffuse astrocytoma II 15%
3/20
33,3%
1/3
66,6%
2/3
Yes DNA sequencing,
qRT-PCR, IHC
Patients
(Portugal)
Associated with older age. [52]
Diffuse astrocytoma II 20%
8/40
25%
2/8
62.5%
5/8
Yes DNA sequencing,
qRT-PCR, TRAP,
reporter assays
Patients
(China)
Associated with age. [57]
Diffuse astrocytoma II 15.2%
7/46
16.7%
1/7
83.3%
6/7
N/A DNA sequencing Patients
(Portugal &
Brazil)
Frequency increased with grade. [85]
Total Diffuse Astrocytoma 28/158
(17.7%)
6/28
(21.4%)
21/28
(75%)
Astocytoma II–IV 62.5%
416/665
N/A N/A N/A DNA sequencing Patients
(US American)
Associated with shorter OS.
Can be associated with ATRX mutations or IDHmut/1p1q loss.
[80]
Anaplastic Astrocytomas III 10%
1/10
0%
0/1
100%
1/1
N/A DNA sequencing Patients
(Portugal &
Brazil)
Frequency increased with grade. [85]
Anaplastic Astrocytoma III 33.3%
4/12
0%
0/4
100%
4/4
Yes DNA sequencing,
qRT-PCR, TRAP,
reporter assays
Patients
(China)
Correlation with age. [57]
Anaplastic Astrocytomas III 25.3%
20/79
20%
4/20
80%
16/20
Yes DNA sequencing,
qRT-PCR
Patients
(Japan)
Associated with total 1p19q loss and IDH-1/2 mutations (98%) but exclusive with IDH-1 if not total loss of 1p19q. [53]
Total Anaplastic Astrocytomas 25/101
(24.7%)
4/25
(16%)
21/25
(84%)
Mixed Oligoastocytoma II–IV 32.3%
63/195
* * N/A DNA sequencing Patients
(US
American)
Associated with shorter OS.
Can be associated with ATRX mutations or IDHmut/1p1q loss.
[80]
Oligoastrocytoma 40%
14/35
28.6%
4/14
71.4%
10/14
Yes DNA sequencing,
qRT-PCR
Patients
(Japan)
Associated with total 1p19q loss and IDH-1/2 mutations (98%) but exclusive with IDH-1 if not total loss of 1p19q. [53]
Oligoastrocytoma II–III 40.0%
4/10
50%
2/4
50%
2/4
N/A DNA sequencing Patients
(Portugal & Brazil)
Not associated with lower survival. [85]
Anaplastic Oligoastrocytoma 48.9%
22/45
27.3%
6/22
72.7%
16/22
Yes DNA sequencing,
qRT-PCR
Patients (Japan) Associated with total 1p19q loss and IDH-1/2 mutations (98%) but exclusive with IDH-1 if not total loss of 1p19q. [53]
Total
Oligoastrocytoma
103/285
(36.1%)
12/40
(30%)
28/40
(70%)
Medulloblastoma 33.3%
2/6
50%
1/2
50%
1/2
N/A DNA sequencing Patients (China) Associated with age. [57]
Medulloblastoma 20.9%
19/91
0%0/19 100%
19/19
N/A DNA sequencing Patients
(US American)
IDH-wt and ATRX-wt only.
Associated with worse prognosis in IDH-1-wt.
Associated with older age.
Mutually exclusive with ALT.
[77]
Total
Medulloblastoma
21/97
(21.6%)
1/21
(4.7%)
20/21
(95.3%)
Skin
Melanoma 71%
50/70
46%
23/50
54%
27/50
Yes DNA sequencing,
reporter vectors
Patients
& cell lines
[50]
Melanoma 32.5%
25/77
20%
5/25
28%
7/25
N/A DNA sequencing Patients -57 C>T germline mutation in family with history of melanoma.
High prevalence in metastatic cell lines (85%) compared to primary melanoma (32.5%).
CC>TT −139/−138 tandem mutation in 10.4% patients.
Concomitant with BRAF mutations in 47% of cases.
[49]
Melanoma 29%
16/56
50%
8/16
50%
8/16
N/A DNA sequencing Patients
(Portugal)
Associated with BRAF mutations. [52]
Melanoma 34%
97/287
52.5%
51/97
36%
35/97
Yes DNA sequencing,
qRT-PCR
Patients
(Spain)
CC>TT −139/−138 tandem mutations in 4/97 (4.1%) patients.
Associated with BRAF mutations in 50% cases.
[88]
Melanoma 41.6%
121/291
* * N/A DNA sequencing Patients (Spain) Associated with shorter telomeres in tumor and with accelerated telomere shortening rate.
Associated with BRAF/NRAS mutation in 75/243 cases.
Telomere shortening rate: BRAF/NRASmut+TERTpmut>TERTpmut>BRAF/NRASmut
[115]
Melanoma 22%
26/116
35%
9/26
46%
12/26
Yes DNA sequencing,
IHC
Patients
(Portugal)
Associated with reduced OS & DFS.
More prevalent in sun-exposed regions.
Associated with increased mitotic rates.
−138/−138 CC>TT tandem mutation in 2/26 (7.7%) patients.
−125/−124 CC>TT tandem mutation in 3/26 (11.5%) patients.
Associated with BRAF-V600E mutation (58% of cases).
[89]
Melanoma 38.6%
116/300
50%
58/116
32.8%
32/116
N/A DNA sequencing Patients (Spain) Associated with shorter OS and DFS.
−139/−138 CC>TT & −125/−124 CC>TT tandem mutations in 16/116 cases (13.8%).
Associated with BRAF/NRAS mutations in 126/283 (44.5%) cases.
Reversed by rs2853669 TERT -245 A>G polymorphism.
[116]
Melanoma 54.8%
63/115
61.9%
39/63
30.2%
19/63
N/A DNA sequencing Patients (Austria) −139/−138 CC>TT tandem mutations in 4/63 (6.3%) patients.
−125/−124 CC>TT tandem mutation in 1/63 (1.6%) patient.
Associated with BRAF/NRAS mutation in 75/243 cases.
Associated with rs2853669 TERT -245 A>G polymorphism.
[91]
Total Melanoma 514/1312
(39.2%)
193/398
(48.5%)
140/398
(35.1%)
Basal cell carcinoma 55.6%
18/32
55.6%
10/18
22.2%
4/18
N/A DNA sequencing Patients (Germany) [55]
Basal cell carcinoma
(sporadic & nevoid)
74%
31/42
35.5%
11/31
45.1%
14/31
N/A DNA sequencing Patients Mostly homozygous.
−139/−138 CC>TT tandem mutation in 7/31 (22.6%) patients.
−125/−124 CC–TT tandem mutation in 5/31 (16.1%) patients.
1 patient with −139/−138 CC>TT + −125/−124 CC>TT tandem mutations.
Mutations more frequent in basal cell carcinoma than in squamous cell carcinoma.
[90]
Basal cell carcinoma 38.7%
76/196
43%
33/76
49%
37/76
no DNA sequencing,
IHC
Patients
(Portugal)
No correlation with clinical parameters.
Higher prevalence in patients not exposed to X-irradiation: 48/94 (51%) vs. 28/102 (27%) in X-irradiated patients.
−124 C>T more frequent than −146 C>T in non-X-irradiated patients;
−146 C>T more frequent in X-irradiated patients.
−139/138 CC>TT tandem mutation in 2/76 (2.6%) patients,
2 patients with −146 C>T + −124 C>T mutations.
[89]
Total Basal cell carcinoma 125/270
(46.2%)
54/125
(43.2%)
55/125
(44%)
Cutaneous SCC 50%
17/34
29.4%
5/17
29.4%
5/17
N/A DNA sequencing Patients (Germany) [55]
Cutaneous SCC 50%
13/26
54%
7/13
31%
4/13
N/A DNA sequencing Patients Mostly homozygous.
−139/−138 CC>TT tandem mutation in 2/13 (15.4) patients.
Mutations more frequent in basal cell carcinoma than in squamous cell carcinoma.
[90]
Total Cutaneous SCC 30/60
(50%)
12/30
(40%)
9/30
(30%)
Bladder/urinary tract cancers
Bladder Cancer 85%
44/52
4.5%
2/44
95.5%
42/44
N/A DNA sequencing Patients (China) [78]
Urothelial bladder carcinoma III 80%
12/15
17%
2/12
83%
10/12
N/A DNA sequencing Patients
(US American)
[93]
Urothelial bladder carcinoma 66.7%
14/21
28.6%
4/14
71.4%
10/14
N/A DNA sequencing Patients
(US American)
[77]
Urothelial bladder carcinoma 61.7%
148/240
25%
37/148
58.8%
87/148
N/A DNA sequencing Patients (China) Not associated with age. [57]
Urothelial bladder carcinoma 59%
48/82
37.5%
18/48
62.5%
30/48
N/A DNA sequencing, qRT-PCR Patients (Portugal) Not associated with age.
Low-grade bladder cancer: 67%,
high-grade bladder cancer: 56%.
[52]
Urothelial bladder carcinoma 65.4%
214/327
17.8%
38/214
81.8%
175/214
N/A DNA sequencing, relative telomere length Patients (Sweden) Associated with shorter telomeres and worse OS.
Associated with FGFR3 mutation in 45% of tumors.
FGFR3 mutations found in low-grade tumors, TERTp mutations in low-grade and high-grade tumors.
Reversed by rs2853669 TERT −245 A>G polymorphism.
[61]
Urothelial bladder carcinoma 77.1%
361/468
17%
62/361
83%
299/361
Not increased DNA sequencing, qRT-PCR Patients Not associated with OS, DFS, or clinical outcome.
Associated with FGFR3mut.
[94]
Urothelial bladder carcinoma 100%
33/33
12%
5/33
85%
28/33
N/A DNA sequencing Patients Pure micropapillary carcinoma and urothelial cancer with focal micropapillary features. [92]
Urothelial upper tract urinary carcinoma 76.9%
40/52
12.5%
5/40
72.5%
29/40
N/A DNA sequencing Patients
(China)
Not associated with age. [57]
Urothelial upper tract urinary carcinoma 47.4%
9/19
11.1%
1/9
88.9%
8/9
N/A DNA sequencing Patients
(US American)
[77]
Urothelial upper tract urinary carcinoma 29.5%
65/220
18.5%
12/65
81.5%
53/65
N/A DNA sequencing,
Detection in urine
Patients (China) Associated with distant metastases. [118]
Total Urothelial bladder & upper tract urinary carcinoma 988/1529
(64.6%)
186/988
(18.8%)
771/988
(78%)
Thyroid
Differentiated thyroid cancer 12.2%
41/336
4.9%
2/41
95.1%
39/41
N/A DNA sequencing Patients Only in malignant lesions. [108]
Papillary thyroid cancer 8%
13/169
7.7%
1/13
84.6%
11/13
Yes DNA sequencing,
qRT-PCR, IHC
Patients
(Portugal)
[52]
Papillary thyroid cancer III/IV 11.3%
46/408
15.2%
7/46
85.8%
39/46
N/A DNA sequencing Patients (China) Associated with older age, larger tumor size, extrathyroid invasion, advanced clinical stage.
Associated with BRAF-V600E mutation.
[99]
Papillary thyroid cancer 27%
13/51
7.7%
1/13
92.3%
12/13
N/A DNA sequencing Patients (Sweden) Only in patients >45.
Correlated with shorter telomeres and distal metastases.
PTC: 27% (25/332); FTC: 22% (12/70); ATC: 50% (12/36).
[98]
Papillary thyroid cancer III/IV 4.1%
18/432
* * N/A DNA sequencing Patients (Korea) Associated with BRAF/RAS mutations.
Associated with tumor size, stage III-IV, recurrence, decreased OS and DFS with BRAF/RAS mutations: RAS/BRAF >TERTp > RAS/BRAF+TERTp.
[106]
Papillary thyroid cancer 11.7%
30/257
0%
0/30
100%
30/30
N/A DNA sequencing Patients Only in malignant lesions.
−124 C>T associated with BRAF-V600E mutation.
[108]
Papillary thyroid cancer 37.7%
10/27
10%
1/10
90%
9/10
N/A DNA sequencing Patients (Korea) No TERTp mutation found in 192 well differentiated cancers without distant metastasis. [105]
Papillary thyroid cancer 22%
18/80
44%
8/18
66%
10/18
N/A DNA sequencing Patients
(US & Japan)
More frequent in BRAF-wt patients than in BRAFmut. [100]
Papillary thyroid cancer 31.8%
77/242
0%
0/77
100%
77/77
N/A DNA sequencing Patients
(US)
Associated with older age (>45 years), larger tumor size, stage III–IV, distant metastases, decreased OS and DFS.
rs2853669 TERT −245 A>G polymorphism (46.7% (113/242)of patients) increases OS & DFS in patients without TERTp mutations and with BRAF-V600E.
[103]
Papillary thyroid cancer 12%
22/182
14.6%
3/22
86.4%
19/22
Yes DNA sequencing,
WB, and IHC
Patients
(Italy)
Associated with older age and poor prognosis.
Increased cytoplasmic localization of TERT.
No impact of rs2853669 TERT -245 A>G polymorphism on outcome.
[102]
Total Papillary thyroid cancer 247/1848
(13.4%)
21/229
(9.2%)
207/229
(90.4%)
Follicular Thyroid Cancer 13.9%
11/79
18.2%
2/11
81.8%
9/11
N/A DNA sequencing Patients Only in malignant lesions. [108]
Follicular Thyroid Cancer 66.7%
2/3
50%
1/2
50%
1/2
N/A DNA sequencing Patients (Korea) No TERTp mutation found in 192 well-differentiated cancers without distanst metastasis. [105]
Follicular thyroid Cancer 14%
9/64
22.2%
2/9
77.8%
7/9
Yes DNA sequencing,
qRT-PCR, IHC
Patients (Portugal) [52]
Follicular thyroid cancer 22%
8/36
12.5%
1/8
87.5%
7/8
N/A DNA sequencing Patients (Sweden) Increased prevalence in ATC: PTC: 27% (25/332); FTC: 22% (12/70); ATC: 50% (12/36). [98]
Follicular thyroid cancer 36.4%
8/22
12.5%
1/8
87.5%
7/8
N/A DNA sequencing Patients (China) Associated with older age, larger tumor size, extrathyroid invasion, advanced clinical stage.
Associated with BRAF-V600E mutation.
[99]
Follicular thyroid cancer III/IV 5.9%
7/119
* * N/A DNA sequencing Patients (Korea) Associated with BRAF/RAS mutations.
Associated with tumor size, stage III-IV, recurrence, decreased OS and DFS with BRAF/RAS mutations: RAS/BRAF >TERTp > RAS/BRAF+TERTp.
[106]
Follicular thyroid cancer 14%
8/58
38.5%
3/8
62.5%
5/8
Yes DNA sequencing,
WB, and IHC
Patients (Italy) Associated with older age and poor prognosis.
Increased cytoplasmic TERT.
No impact of rs2853669 TERT -245 A>G polymorphism on outcome.
[102]
Total Follicular thyroid cancer 53/381
(13.9%)
10/46
(21.7%)
36/46
(78.2%)
Poorly differentiated thyroid cancer 21%
3/14
33.3
1/3
66.7
2/3
Yes DNA sequencing,
qRT-PCR, IHC
Patients (Portugal) [52]
Poorly differentiated thyroid cancer 37.5%
3/8
0%
0/3
100%
3/3
N/A DNA sequencing Patients Only in malignant lesions. [108]
Poorly differentiated thyroid cancer 29%
2/7
50%
1/2
50%
1/2
N/A DNA sequencing Patients (Korea) No TERTp mutation found in 192 well-differentiated cancers without distanst metastasis. [105]
Poorly differentiated thyroid cancer 51.7%
30/58
40%
12/30
60%
18/30
N/A DNA sequencing Patients
(US & Japan)
More prevalent in advanced cancer patients with BRAF/RASmut. [100]
Total Poorly differentiated thyroid cancer 38/87
(43.7%)
14/38
(36.8%)
24/38
(63.2%)
Anaplastic thyroid cancer 46.3%
25/54
8%
2/25
92%
23/25
N/A DNA sequencing Patients Only in malignant lesions. [108]
Anaplastic thyroid cancer 13%
2/16
50%
1/2
50%
1/2
Yes DNA sequencing, qRT-PCR Patients (Portugal) [52]
Anaplastic thyroid cancer 50%
10/20
0%
0/10
100%
10/10
N/A DNA sequencing Patients
(US & Japan)
More prevalent in advanced cancer patients with BRAF/RASmut. [100]
Anaplastic thyroid cancer 50%
10/20
20%
2/10
80%
8/10
N/A DNA sequencing Patients (Sweden) PTC: 27% (25/332); FTC: 22% (12/70); ATC: 50% (12/36). [98]
Anaplastic thyorid cancer 33.3%
12/36
* * N/A DNA sequencing Patients
(Portugal & Spain)
Associated with older age, larger tumor size, distant metastases and disease-related death in FTC.
PTC: 7.5% (25/332); FTC: 17.1% (12/70); PDTC: 29% (9/31); ATC: 33.4% (12/36).
PTC associated with BRAF-V600E mutation in 60.3% of cases.
[101]
Anaplastic thyroid cancer 38.7%
41/106
10%
4/41
90%
37/41
N/A DNA sequencing Patients
(US & China)
Associated with older age and distal metastases.
−124 C>T found in 56.3% of BRAF-V600E mutated cases.
[104]
Total anaplastic thyroid cancer 100/252
(39.7%)
9/88
(10.2%)
79/88
(89.7%)
Thyroid Cancer cell lines 91.7%
11/12
27.3%
3/11
72.7%
8/11
N/A DNA sequencing Cell lines [108]
Thyroid Cancer cell lines 75%
6/8
17.7%
1/6
83.3%
5/6
N/A DNA sequencing ATC cell lines [98]
Liver-Hepatocellular Carcinoma (HCC)
HCC 31.4%
11/35
18,2%
2/11
81,8%
9/11
N/A DNA sequencing Patients (China) [57]
HCC 34%
15/44
33.3%
5/15
66.7%
10/15
N/A DNA sequencing Patients
(Africa, Asia, Europe)
Higher TERTp mutation prevalence in African (53%) compared to non-African (24%) populations. [97]
HCC 44.3%
27/61
3.7%
1/27
96.3%
26/27
N/A DNA sequencing Patients
(US American)
Detected in both HBV-associated and HBV-independent HCC
Frequent in HCV-associated HCC.
[77]
HCC 48.5%
65/131
3.1%
2/65
96.9%
63/65
N/A DNA sequencing Patients (Italy) 41% of mutations in HBV-associated HCC.
53.6% mutations in HCV-associated HCC.
All heterozygous.
No −57 A>C.
[95]
HCC 31%
85/275
1.1%
1/85
98.9%
84/85
Yes DNA sequencing, IHC Patients (China) HBV-associated HCC.
Correlated with age, not with HBV status.
Found in 4/7 preneoplastic lesions (HBV-associated HCC).
[63]
HCC 65.4%
68/104
3%
2/68
97%
66/68
Yes DNA sequencing Patients (Japan) Associated with older age.
Associated with shorter OS and DFS.
Associated with HCV infection and excluded from HBV+ HCC.
[122]
HCC 58.6%
179/305
6.1%
11/179
92.7%
166/179
Yes
2–10-fold
DNA sequencing, qRT-PCR Patients (French) Detected in cirrhotic preneoplastic macronodules (25%) and cirrhotic adenomas (44%), at last step of malignant transformation into HCC.
Absent from HBV-associated tumors 2/179 (1%) −146 C>T.
[62]
HCC 29.3%
57/195
5.3%
3/57
94.7%
54/57
No DNA sequencing, qRT-PCR Associated with older age.
No impact on overall survival.
Excluded from HBV-associated HCC.
Higher frequency in HCV-associated HCC.
[96]
HCC 54%
254/469
4.3%
11/254
93%
236/254
N/A DNA sequencing Patients (Japan, US-European ancestry) −57 A>C mutation detected in 1.6%.
Present in 37% HBV-associated HCC but mutually exclusive with HBV sequence integration.
Mutually exclusive with TERT CNV and ATRX mutations.
Associated with HCV infection (64% or TERTp mutations).
Associated with Wnt pathway mutations.
[121]
HCC 60%
9/15
11.1%
1/9
88.9%
8/9
N/A DNA sequencing Cell lines [97]
Total HCC 770/1634
(47.1%)
39/770
(5%)
722/770
(93.7%)
Cervical
Cervical SCC 21.8%
22/101
31.8%
7/22
45.5%
10/22
Yes qRT-PCR Patients (Italian women) [37]
Cervical SCC 21.4%
30/140
26.7%
8/30
73.3%
22/30
N/A DNA sequencing, Association with clinical status Patients (Indian women) 75% TERTp mutations in HPV-negative samples.
−124 C>T 6/22 were TT homozygous.
−146 C>T 2/8 were TT homozygous.
[36]
Cervical SCC 4.5%
1/22
100%
1/1
0%
0/1
N/A DNA sequencing Patients
(US American)
1 patient with −125 C>A mutation.
Total Cervical SCC 53/263
(20.1%)
16/53
(30.2%)
32/53
(60.4%)
[77]
Head and Neck Squamous Cell Carcinoma (HNSCC)
HNSCC 31.7%
13/41
30.8%
4/13
69.2%
9/13
N/A DNA sequencing Patients (Indian women) Association with clinical status. [36]
HNSCC 17%
12/70
16.7%
2/12
83.3%
10/12
N/A DNA sequencing Patients
(US American)
11/12 HNSCC with TERTp mutations were in the oral tongue, and 11/23 (47.8%) of HNSCC of the oral tongue harbored TERTp mutations. [77]
Total HNSCC 25/111
(22.5%)
6/25
(24%)
19/25
(76%)
Ovarian cancer
Ovarian clear cell carcinoma 15%
3/20
0%
0/3
10%
2/3
N/A DNA sequencing Patients
(US American)
1 patient with −124 C>A mutation. [77]
Ovarian clear cell carcinoma 16.5%
37/233
8.1%
3/37
91.9%
34/37
N/A DNA sequencing,
IHC, telomere length evaluation
Patients No link with survival or age.
TERTp mutations tended to be mutually exclusive with loss of ARID1A protein expression and PIK3CA mutation.
[132]
Ovarian clear cell carcinoma 30%
3/10
0%
0/3
100%
3/3
Yes qRT-PCR Cell lines [132]
Total ovarian clear cell carcinoma 43/263
(16.3%)
3/43
(6.9%)
39/43
(90.7%)

N/A: not assessed; *: data not available. TERT: telomerase reverse transcriptase; GBM: glioblastoma multiforme; SCC: squamous cell carcinoma; HNSCC: head and neck squamous cell carcinoma; HCC: hepatocellular carcinoma; GI: gastrointestinal; UC: urothelial cancer; MPC: micropapillary carcinoma; HPV: Human papilloma virus; HBV: Hepatitis B virus; HCV: Hepatitis C virus; PTC: papillary thyroid cancer; FTC: follicular thyroid cancer; ATC: anaplastic thyroid cancer.