PCDHGA1 and pleomorphic xanthoastrocytoma: 53, 55 (pilomyxoid astrocytoma), no. 62 (oligodendroglioma), and no. 60 (pleomorphic xanthoastrocytoma), and 4 were positive for translocation of exon 9 of MYB with exon 3 of PCDHGA1 (primer combination 5 + 6): nos.