YY-mAbs Therapeutics is a commercial-stage biopharmaceutical company focused on the development and commercialization of antibody based therapeutic products for the treatment of cancer. Co.'s approved drug DANYELZA® (naxitamab-gqgk) was approved by the FDA, in combination with granulocyte-macrophage Colony-Stimulating factor for the treatment of pediatric patients 1 year of age and older and adult patients with relapsed or refractory high-risk neuroblastoma in the bone or bone marrow. Co.'s product candidate, 131I-omburtamab, is in development for pediatric central nervous system/leptomeningeal metastases from neuroblastoma - a rare and life-threatening pediatric cancer