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What do systematic reviews say?

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Evidence found and GRADE certainty

1,476 questions · 1,535 findings · 101 reviews

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No studies found 233 · 15.2%GRADE not reported 332 · 21.6%Very low 209 · 13.6%Low 343 · 22.3%Moderate 279 · 18.2%High 139 · 9.1%

Summary of findings table (subcomparison 1): chemotherapy or targeted therapy plus best supportive care (BSC) vs BSC

Toxicity · palliative participants with esophageal and GE‐junction carcinoma

It is very uncertain whether summary of findings table (subcomparison 1): chemotherapy or… changes toxicity compared with BSC (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 AC of the esophagus

Summary of findings table (subcomparison 5): chemotherapy or… 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 AC of the esophagus

It is very uncertain whether summary of findings table (subcomparison 5): chemotherapy or… changes progression‐free survival 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

Toxicity · palliative participants with AC of the esophagus

It is very uncertain whether summary of findings table (subcomparison 5): chemotherapy or… 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 SCC of the esophagus

Summary of findings table (subcomparison 6): chemotherapy or… 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 SCC of the esophagus

It is very uncertain whether summary of findings table (subcomparison 6): chemotherapy or… changes progression‐free survival 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

Toxicity · palliative participants with SCC of the esophagus

It is very uncertain whether summary of findings table (subcomparison 6): chemotherapy or… changes toxicity compared with control intervention alone (very low certainty).

1 finding from 1 review

Intervention not reported

Intervention: radiotherapy Comparison: chemotherapy Outcome: neurocognitive impairment at 3 year · people with glioma surviving at least two years

The intervention showed no clear difference in intervention: radiotherapy Comparison: chemotherapy Outcome:… (low certainty).

1 finding from 1 review