ATCC, American Type Culture Collection; BM, bone marrow; Dx; diagnosis; DSMZ, German Collection of Microorganisms and Cell Cultures; ECACC, European Collection of Authenticated Cell Cultures; MNA, MYCN amplification; NB, neuroblastoma; PD, progressive disease; RA, right adrenal mass; N/A, not available. The gene discussed is MYCN; the disease is neuroblastoma.