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Table 1 Characteristics of included studies (n = 23)

From: Prognostic significance of 18F-Fluorodeoxyglucose positron-emission tomography parameters in patients with biliary tract cancers: a meta-analysis

Author, year

Country

Mean age

n (male%)

Tumor location

Parameters (cut-off)

Treatment options

follow-up time (month)

Analysis variate

Outcomes

NOS

Cho, 2015 [13]

Korea

61.0

106 (70.8%)

BTC

SUVmax (7.5)

palliative chemotherapy

7.8

M

OS

8

Furukawa, 2009 [14]

Japan

69.0

69 (58.0%)

BTC

SUVmax (6.3)

surgery, palliative therapy

53.0

U

OS

8

Harimoto, 2019 [15]

Japan

–

24 (66.7%)

ICC

SUVmax(9.6),TLG(352.8), MTV(81.2)

surgery

–

M

OS, DFS

7

Haug, 2011 [16]

Germany

–

26 (58.0%)

ICC

â–³SUVmax

90Y microspheres

–

U

OS

6

Hwang, 2021 [17]

Korea

68.5

55 (49.0%)

CCA

SUVmax (7.2)

chemotherapy

33.0

U

OS

7

Kim, 2019 [18]

Korea

72.0

234 (52.6%)

ECC

SUVmax (5.0), LN SUVmax (5.0)

surgery, palliative therapy

13.5

M

OS

9

Kitamura, 2010

Japan

66.0

73 (63.0%)

ECC

SUVmax (5.7)

surgery, chemotherapy

–

M

OS

7

Kobayashi, 2010

Japan

64.0

36 (na)

BTC

SUVmax (2.8)

surgery

17.2

M

OS

8

Kubo, 2022 [11]

Japan

68.0

67 (59.7%)

BTC

SUVmax (4.1), LN SUVmax (2.8)

surgery

24.0

M

OS, DFS

8

Lee, 2013 [21]

Korea

68.5

61 (52.5%)

BTC

SUVmax (5.5)

surgery, palliative therapy

–

M

OS

7

Lee, 2015 []

Korea

67.0

25 (88.0%)

ECC

SUVmax (4.0), TLG (13), MTV(2.8)

surgery

38.9

M

OS, DFS

8

Lee, 2017 [22]

Korea

68.0

76 (75.0%)

ICC

SUVmax (7.3), TLG (336.6), MTV (263.6)

surgery, palliative therapy, no therapy

5.4

M/U

OS

7

Levillain, 2019 [23]

Belgium

58.0

37 (40%)

ICC

SUVmax(9),TLG(249), MTV(59)

90Y microspheres

6.3

U

OS

8

Pak, 2014 [24]

Korea

73.0

64 (60.9%)

CCA

SUVmax(6.9)

palliative treatment

–

U

OS

6

Park,2014 [25]

Korea

61.3

64 (65.5%)

BTC

SUVmax (5.0)

surgery

27.0

M

DFS

8

Sabaté-Llobera, 2018 [26]

Spain

68.0

60 (60.0%)

CCA

SUVmax (6.6)

surgery, palliative therapy

18.5

U

OS

6

Seo,2008 [27]

Japan

64.0

27 (55.6%)

ICC

SUVmax (8.5)

surgery

20.9

M

DFS

8

Seo,2019 [8]

Japan

68.0

94 (58.8%)

ICC

SUVmax (8.0)

surgery

36.0

M

OS, DFS

9

Yi, 2018 [28]

Korea

68.0

40 (60.0%)

ICC

SUVmax (2.7), TLG (2.0), MTV (0.6)

surgery

63.3

M/U

OS

7

Yho, 2019 

Japan

69.5

82 (65.1%)

ICC

SUVmax (8.0)

surgery

28.2

M

OS, DFS

9

Choi, 2017 

USA

61.0

48 (70.8%)

BTC

SUVmax (8.7)

Gem±erlotinib

40.0

U

OS

7

Jo,2017 [30]

Korea

64.0

75 (57.3%)

BTC

SUVmax (9.0), â–³SUVmax

chemotherapy

6.8

M

OS, PFS

9

Zhu, 2010 [31]

USA

60.0

35 (60.0%)

BTC

â–³SUVmax

Bev + Gem+OXA

12.7

M

OS, PFS

8

  1. BTC biliary track cancer, CCA cholangiocarcinoma, ECC extrahepatic cholangiocarcinoma, ICC intrahepatic cholangiocarcinoma, SUVmax maximum standardized uptake value, â–³SUVmax changed SUVmax, LN lymph node, TLG total lesion glycolysis, MTV metabolic tumor volume, M multivariate analysis, U univariate analysis, OS overall survival, DFS disease-free survival, Gem gemcitabine, Bev bevacizumab, OXA oxaliplatin