 NEW YORK, Sept. 16, 2021 GLOBE NEWSWIRE -- Y-mAbs Therapeutics, Inc. Y-mAbs, NASDAQ: YMAB, a commercial-stage biopharmaceutical company focused on the development and commercialization of novel, antibody-based therapeutic products for the treatment of cancer, is pleased to announce the acceptance of two presentations at the International Society of Pediatric Oncology SIOP Virtual Annual Congress held October 21 through October 24, 2021. 