Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

203 questions · 203 findings · 10 reviews · Gut

No studies found 84 · 41.4%GRADE not reported 7 · 3.4%Very low 64 · 31.5%Low 38 · 18.7%Moderate 9 · 4.4%High 1 · 0.5%

Three infusions of natalizumab (300 mg) and two infusions of infliximab (5 mg/kg) vs placebo and two infusions of infliximab

Adverse events up to week 10 · Participants with active Crohn's disease despite current treatment with infliximab

Three infusions of natalizumab (300 mg) and two infusions of… showed no clear difference in adverse events up to week 10 compared with placebo and two infusions of infliximab (moderate certainty).

1 finding from 1 review

Three infusions of natalizumab (300 mg) and two infusions of infliximab (5 mg/kg) vs placebo and two infusions of infliximab

Withdrawals due to adverse outcomes · Participants with active Crohn's disease despite current treatment with infliximab

Three infusions of natalizumab (300 mg) and two infusions of… showed no clear difference in withdrawal due to adverse events up to week 10 compared with placebo and two infusions of infliximab (low certainty).

1 finding from 1 review

Three infusions of natalizumab (300 mg) and two infusions of infliximab (5 mg/kg) vs placebo and two infusions of infliximab

Serious adverse events up to week 10 · Participants with active Crohn's disease despite current treatment with infliximab

Three infusions of natalizumab (300 mg) and two infusions of… showed no clear difference in serious adverse events up to week 10 compared with placebo and two infusions of infliximab (low certainty).

1 finding from 1 review

Corticosteroids vs placebo

Histological improvement (dichotomous) · inactive EoE patients

Corticosteroids probably leads to higher histological improvement (dichotomous) compared with placebo (moderate certainty).

1 finding from 1 review