Simultaneous treatment with benralizumab and ustekinumab in a patient with severe asthma and ulcerative colitis.

The burden of autoimmune diseases is rising worldwide. The expansion of the population of patients eligible for severe asthma biological therapy we are seeing in clinical practice could lead to the simultaneous use of different monoclonal antibodies. We present the case of biological combination therapy with ustekinumab and benralizumab in a patient with ulcerative colitis and severe eosinophilic asthma. The patient, already undergoing biological treatment for colitis, began to suffer from uncontrolled severe asthma. Since benralizumab was administered, the patient has not experienced any exacerbations requiring oral corticosteroids, emergency department visits, or hospital admissions, and the control of asthma symptoms and respiratory function considerably improved. Twelve months after the initiation of the combination, both diseases are well controlled, without any side effects or blood test abnormalities. To our knowledge, this is one of the first reported cases of patients simultaneously receiving a combination of biological therapy for ulcerative colitis and asthma.