What do systematic reviews say?

Interferon beta‐1a vs placebo

Interferon‐B‐1a showed no clear difference in improved IBDQ at week 8 compared with placebo (moderate certainty).

• The impact of biological interventions for ulcerative colitis on health‐related quality of life 2015 · Cochrane Headline outcomes only
  RR 1.14 [0.8, 1.61]
  1 study · 194 participants
  Moderate