"Sequencing analysis showed 3 point mutations two novel variants and one already described in literature. Moreover MLPA analysis showed 3 deletions in 9 sporadic hemiplegic migraine (18%) in 3 patients with non-hemiplegic migraine (4.1%) and in 3 patients affected by episodic ataxia (20%). Two sporadic patients showed a deletion in exons 41-43 while (5) showed a deletion in the terminal part of CACNA1A."xsd:string