Crohn's disease-associated Nod2 mutants reduce IL10 transcription

The 3020insC mutation in Nod2 is associated with Crohn's disease, but how it influences disease pathogenesis is unknown. A new study shows that the 3020insC mutant protein fails to activate a key transcription factor that drives interleukin 10 expression, resulting in reduced production of this anti-inflammatory cytokine.