30th July 2023

A 27-year-old man, with no past medical history, is booked in for an outpatient colonoscopy

A 27-year-old man, with no past medical history, is booked in for an outpatient colonoscopy to investigate chronic abdominal pain and diarrhoea. The macroscopic and microscopic findings were consistent with a diagnosis of Crohn’s disease. The severity of the condition was determined to be severe and potential treatment options were discussed with the patient. The patient was interested in ustekinumab and enquired about further details of mechanism of action.

What is the mechanism of action?

Select the SINGLE most appropriate option from the list below. Select ONE option only.