QN-247CE, formerly referred to as ALAN-CE (Aptamer Linked Anti Nucleolin – Contrast Enhancement), is an aptamer-based investigational drug candidate currently under development and evaluation to be used in combination with imaging technologies to provide higher resolution images of solid tumors and tumor cells. Special imaging dyes can be attached to the gold nanoparticle compound, which are then easily detected in tumor cells, providing higher resolution images to radiologists and oncologists.