EGFR and neoplasm: The PE020 sEVs were also isolated from a patient with an EGFR-mutant NSCLC tumor, yet the immuno-PCR method detected much less signal for its EGFR content than in sEVs from PE011, which was consistent with Western blot profiling data in which PE011 had a higher EGFR level in sEVs relative to PE020.