SLC4A4 and migraine disorder: Furthermore, we found that 4 additional patients carrying homozygous NBCe1 mutations had the following types of migraine: hemiplegic migraine with episodic ataxia in the patient with L522P (Demirci et al., 2006), migraine with aura in the patient with N721TfsX29 (Inatomi et al., 2004), and migraine without aura in the patients with R510H and R881C (Igarashi et al., 1999; Horita et al., 2005).