It is possible that the cellular localization of CA-Lyn [44], [45], the cell surface binding partner of Lyn [46], or Lyn phosphorylation of the growth arrest and DNA damage protein 34 (GADD34) [47] contribute to the anti-death effect in GBM but this remains to be elucidated. The gene discussed is PPP1R15A; the disease is glioblastoma.