Earlier, vasculitic neuropathy was reported in two mesothelioma patients treated off-label with anti-PD-1 monotherapy (10, 11), and a retrospective pharmacovigilance study identified 10 cases of neuropathy and two of vasculitis among 23 patients with mesothelioma experiencing n-irAEs (12). The gene discussed is PDCD1; the disease is vasculitis.