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Table 2 The general characteristics of the 14 systematic reviews and meta-analyses

From: Chemotherapy and targeted therapy for advanced biliary tract cancers: an umbrella review

First author, Year

Original article retrieval time

Journal

Total No. of included studies

Type of study

Study design

Type of Chemotherapy

Subgroup No. of included studies

Intervention (No.of cases)

Control (No.of cases)

Sample size

ALESSANDRO RIZZO,2020 [22]

2019/11/02

IN VIVO

4

Systematic Review and Meta-analysis

RCTs

G-based + anti-EGFR vs. G-based

4

Gem-based + anti-EGFR (228)

Gem-based CHT alone (222)

450 patients

Lawrence Chen, 2016 [16]

2016/04

MEDICINE

15

Meta-analysis

RCTs

GP vs. G

2

GP(202)

G(184)

386 patients

GP + anti-EGFR vs. GP

4

GP + anti-EGFR (316)

GP(313)

629 patients

Ting Zheng, 2020 [19]

2018/12

ONCOLOGY RESEARCH AND TREATMENT

5

Meta-analysis

Restrospective; RCTs

GP vs. FP

5

GP(311)

FP(416)

727 patients

Xin ZHUANG, 2017 [21]

2016/07

JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE ANDTECHNOLOGY-MEDICAL SCIENCES

7

Meta-analysis

RCTs

G-based + anti-EGFR vs. G-based

6

Gem-based + anti-EGFR (432)

Gem-based CHT alone (423)

855 patients

Heng Liu, 2014 [18]

2013/11

WORLD JOURNAL OF GASTROENTEROLOGY

7

Meta-analysis

RCTs

G-based vs. non-G-based

4

Gem-based(150)

non-G-based(153)

303 patients

G-based vs. G

3

Gem-based(275)

G (280)

555 patients

Sheng Zhao, 2016 [17]

2016/03

ONCOTARGETS AND THERAPY

6

Systematic Review and Meta-analysis

RCTs

G-based + anti-VEGFR/EGFR vs. G-based

6

G-based + anti-VEGFR/ EGFR(NA)

G-based(NA)

855 patients

Alessandro Rizzo, 2022 [26]

2021/12/08

EXPERT REVIEW OF GASTROENTEROLOGY & HEPATOLOGY

2

Meta-analysis

RCTs

Fluoropyrimidine-based doublet CHT vs. ASC or 5-FU/LV

2

Fluoropyrimidine-based doublet CHT(169)

ASC or 5-FU/LV(167)

336 patients

Wen-Jie Ma, 2020 [27]

2019/06/12

HBP

5

Meta-analysis

RCTs

Fluoropyrimidine-based vs. Observation

4

Fluoropyrimidine-based (381)

Observation(358)

739 patients

G-based vs. Observation

3

G-based(246)

Observation(238)

484 patients

Julien Edeline, 2022 [28]

NA

EUROPEAN JOURNAL OF CANCER

2

Meta-analysis

RCTs

G-based vs. Observation

2

G-based(212)

Observation(207)

419 patients

Abdel-Rahman O, 2018 [29]

2017/06

COCHRANE DATABASE OF SYSTEMATIC REVIEWS

7

Meta-analysis

RCTs

G + S-1 vs. S-1

2

G + S-1(76)

S-1(75)

151 patients

Yan Li,2019 [30]

2018/10/06

FRONTIERS IN ONCOLOGY

25

Network Meta-analysis

Restrospective; RCTs

Folfox-4 vs. Observation

NA

Folfox-4(NA)

Observation(NA)

NA

XP vs. GP

NA

XP(NA)

GP(NA)

NA

G + S-1 vs. GC

NA

GS(NA)

GC(NA)

NA

Jie Ying, 2019 [31]

2018/04

CRITICAL REVIEWS IN ONCOLOGY HEMATOLOGY

32

Network Meta-analysis

Restrospective; RCTs

G-based CHT vs. single CHT(mainly FU alone)

15

GEM-based CHT(233)

single CHT(396)

629 patients

Fluoropyrimidine-based CHT vs. single TAs

15

Fluoropyrimidine-based CHT(527)

single TAs(150)

677 patients

Taxanes-based CHT vs. single CHT(mainly FU alone)

9

Taxanes-based CHT(54)

single CHT(396)

450 patients

Fluoropyrimidine-based CHT vs. single CHT(mainly FU alone)

8

Fluoropyrimidine-based CHT (244)

single CHT(348)

592 patients

Wei Zheng, 2019 [32]

2017/11

JOURNAL OF CANCER

16

Network Meta-analysis

RCTs

G + S-1 vs. G

NA

G + S-1(NA)

G(NA)

NA

G + S-1 vs. 5-FU

NA

G + S-1(NA)

5-FU(NA)

NA

CapC vs.5-FU

NA

CapC(NA)

5-FU(NA)

NA

GEMOX vs. 5-FU

NA

GEMOX (NA)

5-FU(NA)

NA

FP vs. 5-FU

NA

FP(NA)

5-FU(NA)

NA

Yanfeng Jiang, 2021 [33]

2020/08/10

FRONTIERS IN ONCOLOGY

24

Network Meta-analysis

RCTs

Observation vs. Folfox-4

NA

Observation(NA)

Folfox-4(NA)

NA

Observation vs. C-GEMOX

NA

Observation(NA)

C-GEMOX(NA)

NA

Observation vs. GEMOX + erlotinib

NA

Observation(NA)

GEMOX + erlotinib(NA)

NA

GP + cediranib vs. 5-FU

NA

GP + cediranib(NA)

5-FU(NA)

NA

GP vs. 5-FU

NA

GP(NA)

5-FU(NA)

NA

G + S-1 vs. 5-FU

NA

GS(NA)

5-FU(NA)

NA

C-GEMOX vs. 5-FU

NA

C-GEMOX(NA)

5-FU(NA)

NA

RAM + GP vs. 5-FU

NA

RAM + GP(NA)

5-FU(NA)

NA

MER + GP vs. 5-FU

NA

MER + GP(NA)

5-FU(NA)

NA

XELOX vs. G + XELOX

NA

XELOX(NA)

G + XELOX(NA)

NA

XELOX vs. GEMOX + erlotinib

NA

XELOX(NA)

GEMOX + erlotinib(NA)

NA