Table 2 Characteristics of studies included in the meta-analysis

From: A gut microbial signature for combination immune checkpoint blockade across cancer types

Characteristics

Study

CA209-538 (n = 106)

2022_Simpson43 (n = 38)

2021_McCulloch19 (n = 37)a

2022_Lee18 (n = 165)

2021_Andrews59 (n = 46)

2018_Matson37 (n = 39)

2017_Frankel60 (n = 39)

Country

Australia

Australia

USA

UK,

Netherlands,

Spain

USA

USA

USA

Cancer type (%)

UGB (36%),

GYN (34%),

NEN (30%)

MEL (100%)

MEL (100%)

MEL (100%)

MEL (100%)

MEL (100%)

MEL (100%)

ICB regimen (%)

CICB (100%)

CICB (100%)

Anti-PD-1 (100%)

CICB (33%),

anti-PD-1 (61%),

anti-CTLA-4 (7%)

CICB (100%)

Anti-PD-1 (100%)

CICB (62%),

anti-PD-1 (36%),

anti-CTLA-4 (3%)

Response criteria

RECIST 1.1

Pathological (INMC)

RECIST 1.1

RECIST 1.1

RECIST 1.1

RECIST 1.1

RECIST 1.1

Response

 CR

3.8%

PathR: 84%

5.4%

13%

11%

5.1%

13%

 PR

21%

 

51%

26%

52%

33%

36%

 SD

27%

 

22%

17%

11%

31%

13%

 PD

28%

Non-pathR: 16%

22%

42%

26%

31%

39%

 cPD

20%

 

0%

1.8%

0%

0%

0%

Stool collection kit

OMR-200

EasySampler

EasySampler

LO—TF kits,

MA—plain tube,

NL—plain tube,

LD—OMR-200,

BL—OMR-200

OMR-200

EasySampler

NR

DNA extraction kit

FastDNA soil

FastDNA feces

PowerSoil

LO—TF MagMAX,

MA—TF MagMAX,

LD—TF MagMAX,

NL—TF MagMAX,

BL—PowerFecal

PowerSoil

PowerFecal

Other

Sequencer (bases per read)

NovaSeq (2 × 151)

NovaSeq (2 × 151)

NovaSeq (2 × 151)

NovaSeq (2 × 151)

NextSeq (2 × 151)

NextSeq (2 × 151)

HiSeq (2 × 100)

Clean PE reads (millions)

 Minimum

9.10

5.05

2.72

4.38

12.8

19.3

18.1

 Median

20.4

22.5

30.5

20.7

40.0

35.6

45.4

 Maximum

53.8

34.5

72.2

104

69.8

77.7

59.9

  1. The clinical and technical characteristics of the studies included in the meta-analysis are summarized. Published studies are denoted by ‘year_author’.
  2. USA, United States of America; UK, United Kingdom; MEL, melanoma; INMC, International Neoadjuvant Melanoma Consortium; LO, London; MA, Manchester; NL, Netherlands; LD, Leeds; BL, Barcelona; TF, Thermo Fisher Scientific; PathR, pathologic response; NR, not reported; PE, paired-end.
  3. aOf the original ‘Pittsburgh early cohort’ (n = 63), n = 37 had their analyzed stool sample collected between day −15 and day 15 of starting ICB and were therefore deemed eligible.