According to data from cohort 17 of the phase 1b COSMIC-021 trial (NCT03170960), the combination therapy of cabozantinib and atelizumab, at a mean follow-up of 25.9 months, 17% of the 30 patients in cohort 17 had significant tumour shrinkage or disappearance, giving an overall disease control rate of 60% when those with stable lesions were added. 5 patients with tumours in remission All of the patients whose tumours had shrunk by at least 30%.