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Evidence found and GRADE certainty

47 questions · 47 findings · 4 reviews · Gut

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No studies found 1 · 2.1%GRADE not reported 0 · 0%Very low 15 · 31.9%Low 8 · 17%Moderate 14 · 29.8%High 9 · 19.1%

Summary of findings table (subcomparison 2): second‐line chemotherapy or targeted therapy agent(s) plus control intervention vs control intervention

Overall survival · palliative participants with esophageal and GE‐junction carcinoma previously treated with chemotherapy

Summary of findings table (subcomparison 2): second‐line… probably leads to lower overall survival compared with control intervention alone (moderate certainty).

1 finding from 1 review

Summary of findings table (subcomparison 2): second‐line chemotherapy or targeted therapy agent(s) plus control intervention vs control intervention

Progression‐free survival · palliative participants with esophageal and GE‐junction carcinoma previously treated with chemotherapy

Summary of findings table (subcomparison 2): second‐line… may leads to lower progression‐free survival compared with control intervention alone (low certainty).

1 finding from 1 review

Summary of findings table (subcomparison 2): second‐line chemotherapy or targeted therapy agent(s) plus control intervention vs control intervention

Toxicity · palliative participants with esophageal and GE‐junction carcinoma previously treated with chemotherapy

It is very uncertain whether summary of findings table (subcomparison 2): second‐line… changes toxicity compared with control intervention alone (very low certainty).

1 finding from 1 review

Summary of findings: Molecular‐targeted therapy plus chemotherapy vs chemotherapy alone

Progression‐free survival · people with advanced gastric cancer

Summary of findings: Molecular‐targeted therapy plus chemotherapy showed no clear difference in progression‐free survival compared with chemotherapy alone (low certainty).

1 finding from 1 review

Summary of findings: Molecular‐targeted therapy plus chemotherapy vs chemotherapy alone

Overall response rate Duration of · people with advanced gastric cancer

Summary of findings: Molecular‐targeted therapy plus chemotherapy showed no clear difference in overall response rate Duration of compared with chemotherapy alone (low certainty).

1 finding from 1 review

Summary of findings: Molecular‐targeted therapy plus chemotherapy vs chemotherapy alone

Adverse event (any) Duration of · people with advanced gastric cancer

Summary of findings: Molecular‐targeted therapy plus chemotherapy probably leads to higher adverse event (any) Duration of compared with chemotherapy alone (moderate certainty).

1 finding from 1 review

Summary of findings: Molecular‐targeted therapy plus chemotherapy vs chemotherapy alone

Severe adverse event (grade ≥ 3 ) Duration of · people with advanced gastric cancer

Summary of findings: Molecular‐targeted therapy plus chemotherapy probably leads to higher severe adverse event (grade ≥ 3 ) Duration of compared with chemotherapy alone (moderate certainty).

1 finding from 1 review

Summary of findings table (subcomparison 3): chemotherapy agent(s) plus control intervention vs control intervention

Overall survival · palliative participants with esophageal and GE‐junction carcinoma

Summary of findings table (subcomparison 3): chemotherapy agent(s)… probably leads to lower overall survival compared with control intervention alone (moderate certainty).

1 finding from 1 review

Summary of findings table (subcomparison 3): chemotherapy agent(s) plus control intervention vs control intervention

Toxicity · palliative participants with esophageal and GE‐junction carcinoma

It is very uncertain whether summary of findings table (subcomparison 3): chemotherapy agent(s)… changes toxicity compared with control intervention alone (very low certainty).

1 finding from 1 review

Summary of findings table (subcomparison 5): chemotherapy or targeted therapy agent(s) plus control intervention vs control intervention

Overall survival · palliative participants with esophageal and GE‐junction carcinoma

Summary of findings table: chemotherapy or targeted therapy agent(s)… leads to lower overall survival compared with control intervention alone (high certainty).

1 finding from 1 review

Summary of findings table (subcomparison 5): chemotherapy or targeted therapy agent(s) plus control intervention vs control intervention

Progression‐free survival · palliative participants with esophageal and GE‐junction carcinoma

Summary of findings table: chemotherapy or targeted therapy agent(s)… probably leads to lower progression‐free survival compared with control intervention alone (moderate certainty).

1 finding from 1 review

Summary of findings table (subcomparison 5): chemotherapy or targeted therapy agent(s) plus control intervention vs control intervention

Toxicity · palliative participants with esophageal and GE‐junction carcinoma

It is very uncertain whether summary of findings table: chemotherapy or targeted therapy agent(s)… changes toxicity compared with control intervention alone (very low certainty).

1 finding from 1 review