SLC7A5 and glioblastoma: In addition, in the study of Habermeier et al. (2015), FET significantly inhibited the uptake of L-[3H]-tyrosine in LN229 glioblastoma cells suggesting that it was utilizing LAT1 as it accumulated in the oocytes expressing human h4F2hc-hLAT1, but not in control non-expressing LAT1 oocytes (103).