ATF6 and glioblastoma: The cleavage effect was similar in three genotypes of EV-A71, including strain Tainan/4643/98 (isolated from a severe case; Fig. 1) [26], and in RD, HEK293T, MCF7, and glioblastoma SF268 cells (data not shown), suggesting that a reduction in ATF6 might not account for virulence or cell tropism.