The six patients with immune-mediated CAs (three patients with anti-GAD-Ab associated CA, two with gluten ataxia, and one patient with cerebellar type of Hashimoto’s encephalopathy) included three males and three females, with a mean age of 66.6 ± 7.2 years (±SD), with a mean disease duration of 6.2 ± 6.4 years. The gene discussed is GAD1; the disease is cancer.