Analogously, to improve the selectivity of photosensitizer accumulation in EGFR-overexpressing cancer cells, chlorin e6 (Ce6) was conjugated with 4-arylaminoquinazolines, a class of molecules analogues to Vandetanib, a known tyrosine kinase inhibitor of both VEGFR-2 and EGFR [125]. The gene discussed is KDR; the disease is cancer.