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Table 2 Treatment response and pathological staging in Helicobacter pylori–stratified neoadjuvant immunotherapy and chemotherapy patients

From: Helicobacter pylori reversing the landscape of neoadjuvant immunotherapy for microsatellite stable gastric cancer: a multicenter cohort study

Variable

 

Chemo-immunotherapy

H. pylori

 

Chemotherapy

H. pylori

Total

(n = 86)

Negative

(n = 53)

Positive

(n = 33)

P

Total

(n = 115)

Negative

(n = 79)

Positive

(n = 36)

P

TRG

   

0.993

   

0.835

 MjHR

39

24 (45.28)

15 (45.45)

 

29

19 (24.05)

10 (27.78)

 

 PHR

23

14 (26.42)

9 (27.27)

 

46

33 (41.77)

13 (36.11)

 

 NHR

24

15 (28.30)

9 (27.27)

 

40

27 (34.18)

13 (36.11)

 

ORR

   

0.187

   

0.090

 CR/PR

47

26 (49.06)

21 (63.64)

 

60

37 (46.84)

23 (63.89)

 

 SD/PD

39

27 (50.94)

12 (36.36)

 

55

42 (53.16)

13 (36.11)

 

pCR

   

0.627

   

0.866

 pCR

21

12 (22.64)

9 (27.27)

 

12

9 (11.39)

3 (8.33)

 

 Non-pCR

65

41 (77.36)

24 (72.73)

 

103

70 (88.61)

33 (91.67)

 

MPR

   

0.795

   

0.912

 MPR

38

24 (45.28)

14 (42.42)

 

28

19 (24.05)

9 (25.00)

 

 Non-MPR

48

29 (54.72)

19 (57.58)

 

87

60 (75.95)

27 (75.00)

 

ypTNM

   

0.541

   

0.579

 I

42

24 (45.28)

18 (54.55)

 

31

20 (25.32)

11 (30.56)

 

 II

15

11 (20.75)

4 (12.12)

 

31

20 (25.32)

11 (30.56)

 

 III

29

18 (33.96)

11 (33.33)

 

53

39 (49.37)

14 (38.89)

 

Pathological tumor stage (ypT)

   

0.656

   

0.449

 0–1

38

22 (41.5)

16 (48.5)

 

21

13 (16.5)

8 (22.2)

 

 2–4

24

31 (58.5)

17 (51.5)

 

94

66 (83.5)

28 (77.8)

 

Pathological node stage (ypN)

   

0.652

   

0.313

 0

51

30 (56.60)

21 (63.64)

 

49

31 (39.24)

18 (50.00)

 

 1–3

35

23 (43.40)

12 (36.36)

 

66

48 (60.76)

18 (50.00)

 
  1. Abbreviations: pCR pathological complete response, ORR objective response rate, MPR major pathological response, TRG tumor regression grade, MjHR major histopathological response, PHR partial histopathological response, NHR no histological response
  2. Categorical variables were analyzed using the Pearson χ2 test or Fisher exact test, as appropriate