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Table 1 Characteristics of the included studies

From: Efficacy and safety of thrombopoietin receptor agonists in solid tumors with chemotherapy-induced thrombocytopenia: a meta-analysis

Author and Year, Tumor type, Registration Number, Stage

Regions

Age(years)

Gender (male,%)

Interventions

Participants

Random and blind method

outcomes

Period of study

Natale R (2009), Non-Small Cell Lung Cancer, NCT00413283, Phase 2

USA, Europe, Canada, Austria

63.8 ± 10.8

75%

Romiplostim 250 µg

N = 16

1:1:1:1Random, double-blind

Chemotherapy dose reduction or delays, grade 3 or 4 thrombocytopenia, platelet transfusion, AEs, serious AEs

4 months

62.5 ± 7.7

66.7%

Romiplostim 500 µg

N = 18

65.4 ± 8.2

88.2%

Romiplostim 750 µg

N = 17

59.8 ± 6.6

50%

Placebo

N = 12

Winer(2015), Solid tumors, NCT01147809, Phase 1

USA, Europe, India

55.0(34.0–74.0)

47%

Eltrombopag 100 mg

N = 19

3:1Random, double-blind

Chemotherapy dose reduction or delays, grade 3 or 4 thrombocytopenia, platelet count > 400 × 109/L, AEs, serious AEs, thrombosis, mortality

6 cycles of chemotherapy

61.0(31.0–81.0)

43%

Placebo

N = 7

Winer(2017), Solid tumors, Not given, Phase 2

USA, Europe

67.0(36.0–82.0)

55.8%

Eltrombopag 100 mg

N = 52

2:1Random, double-blind

Bleeding events, platelet transfusion, chemotherapy dose reduction or delays, grade 3 or 4 thrombocytopenia, AEs, serious AEs, thrombosis

6 cycles of chemotherapy

66.0(44.0–83.0)

43.5%

Placebo

N = 23

Al-Samkari(2022), Solid tumors, NCT03471078, Phase 3

USA, Europe、China

62.0(52.0–69.0)

48%

Avatrombopag 60 mg

N = 82

2:1Random, double-blind

Bleeding events, platelet transfusion, chemotherapy dose reduction or delays, grade 3 or 4 thrombocytopenia, platelet count > 400 × 109/L; AEs, serious AEs, thrombosis, mortality.

Not given

63.5(54.0–67.0)

45%

Placebo

N = 40

Mantha(2019), Solid tumors, NCT02052882, Phase 2

USA

50.0(30.0–76.0)

30%

Romiplostim

N = 15

2:1Random, open

Platelet transfusion, AEs, serious AEs

3 weeks after enrollment

67.0(46.0–77.0)

75%

Observation group

N = 8

Kellum(2010), Solid tumors, NCT00102726, Phase 2

USA, European Union, Asia, South America

58.5(35.0–75.0)

52%

Eltrombopag 50 mg

N = 44

1:1:1:1Random, double-blind

Bleeding events, platelet count > 400 × 109/L; AEs, thrombosis, mortality

Not given

59.0 (33.0–75.0)

36%

Eltrombopag 75 mg

N = 44

58.0 (34.0–81.0)

52%

Eltrombopag 100 mg

N = 46

58.0(23.0–73.0)

35%

Placebo

N = 46