URGCP and neoplasm: Although the xenografts of vector-control cells on day 60 reached tumor sizes similar to xenografts of URGCP-overexpressing cells formed on day 35, there was still not any sign of irregular invasion between subcutaneous tumors xenografted with vector-control cells and surrounding dermal tissue, in contrast to invasive tumors developed by URGCP-overexpressing cells (Supplementary Fig. S1C).