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Evidence found and GRADE certainty

6 questions · 7 findings · 1 reviews · Gut

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No studies found 0 · 0%GRADE not reported 0 · 0%Very low 2 · 28.6%Low 5 · 71.4%Moderate 0 · 0%High 0 · 0%

Chemmotherapy combined with biological therapy vs chemotherapy alone

Tumour response · advanced gastric and oesophago‐gastric junction adenocarcinoma

It is very uncertain whether chemmotherapy combined with biological therapy changes tumour response rate compared with chemotherapy (very low certainty).

1 finding from 1 review

Chemotherapy vs placebo, best supportive care (BSC) or no treatment

Tumour response · advanced gastric and oesophago‐gastric junction adenocarcinoma

Chemotherapy showed no clear difference in tumour response rate compared with placebo, best supportive care (BSC) or no treatment (low certainty).

1 finding from 1 review

Biological therapy vs placebo, best supportive care (BSC) or no treatment

Tumour response · advanced gastric and oesophago‐gastric junction adenocarcinoma

Biological therapy may leads to higher tumour response rate compared with placebo, best supportive care (BSC) or no treatment (low certainty).

1 finding from 1 review

Chemotherapy vs chemotherapy alone

Tumour response · advanced gastric adenocarcinoma

Chemotherapy showed no clear difference in tumour response rate (non‐taxane monotherapy vs taxane monotherapy) compared with chemotherapy (low certainty).

2 findings from 1 review

Chemotherapy vs chemotherapy alone

Tumour response rate (taxane‐containing doublet therapy vs taxane monotherapy) · advanced gastric adenocarcinoma

It is very uncertain whether chemotherapy changes tumour response rate (taxane‐containing doublet therapy vs taxane… compared with chemotherapy (very low certainty).

1 finding from 1 review