Seventy-three COL4A1 mutations, 42 from published and 31 from new patients, and 5 COL4A2 mutations, 2 from published and 3 from new patients, all associated with epilepsy, and the 2 novel mutations of cases 26 and 28 are shown in figure 3, A and B. Here, COL4A1 is linked to epilepsy.