In 2023, the phase 2 TitAIN study showed that the effectiveness and safety of secukinumab in 52 patients with giant cell arteritis (GCA) who had an inadequate response to tocilizumab. While we await the results of a larger phase 3 trial, there is a 6 patient case series also suggesting the efficacy of IL-17 inhibition in GCA, not responding to TCZ.
A case series of six GCA patients from three centres in Italy. All were treated with secukinumab (300 mg SC weekly for four weeks, then 300 mg monthly). Clinical outcomes were assessed at six months.