MYCN and metastatic neoplasm: Approximately 30 items were surveyed according to common INRG queries, including age at diagnosis, year of diagnosis, initial treatment, tumor stage, MYCN status, DNA ploidy, chromosomal aberrations in 1p, 11q, and 17q, serum ferritin and LDH levels, primary tumor sites (five and other sites), metastatic tumor sites (seven and other sites), pathological information, race, sex, site of relapse, secondary malignancy, and OS and EFS.