The authors proved not only the ability of the aptamer to bind wild-type and mutant EGFR with high affinity (Kd = 2.4 nM), but also demonstrated the aptamer’s capacity to detect and capture murine and human GBM cells when it is immobilized on a glass substrate, so it is possible to use the technique for early detection and the monitoring of residual disease [33]. Here, EGFR is linked to glioblastoma.