In addition, 91 patients with iCCA at our centre were categorized into two groups according to their median AGTR1 level (IHC score): high‐level group (AGTR1 > 6, n = 40) and low‐level group (AGTR1 ≤ 6, n = 51). This evidence concerns the gene AGTR1 and infantile convulsions and choreoathetosis.