HSD11B1L and glioblastoma: RT-PCR results showed that, compared with normal brain cells such as neurons, astrocytes and microglia, HSD11B1L-181 was highly expressed in GBM cell lines such as GBM8401, GBM8901, M059K, U-87MG, G5T/VGH and DBTRG-05MG (p < 0.0001, Figure 1B, top right).