Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

16 questions · 19 findings · 1 reviews

No studies found 1 · 5.3%GRADE not reported 0 · 0%Very low 0 · 0%Low 8 · 42.1%Moderate 9 · 47.4%High 1 · 5.3%

Two infusions of natalizumab (6 mg/kg) vs placebo

Failure to induce remission at 6 weeks · Patients with active Crohn's disease

Two infusions of natalizumab (6 mg/kg) showed no clear difference in failure to induce remission at 6 weeks compared with placebo (moderate certainty).

2 findings from 1 review

Two infusions of natalizumab (6 mg/kg) vs placebo

Failure to induce clinical response (Panaccione 2010) CDAI ‐ (≥100 point reduction) · Patients with active Crohn's disease

Two infusions of natalizumab (6 mg/kg) showed no clear difference in failure to induce clinical response at 6 weeks compared with placebo (moderate certainty).

2 findings from 1 review

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

Failure to induce clinical remission at end of study · 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 failure to induce clinical remission at 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

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

Two infusions of natalizumab (300 mg or 3 mg/kg) vs placebo

Failure to induce clinical response (Panaccione 2010) CDAI ‐ (≥100 point reduction) · Patients with active Crohn's disease

Two infusions of natalizumab (300 mg or 3 mg/kg) showed no clear difference in failure to induce clinical response at 6 weeks compared with placebo (low certainty).

1 finding from 1 review

Two infusions of natalizumab (300 mg or 3 mg/kg) vs placebo

Failure to induce remission at 6 weeks · Patients with active Crohn's disease

Two infusions of natalizumab (300 mg or 3 mg/kg) leads to lower failure to induce remission at 6 weeks compared with placebo (high certainty).

2 findings from 1 review