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The CHMP has Adopted a Negative Opinion for Omburtamab for the Treatment of CNS/LM Metastasis from Neuroblastoma in Europe

Key Takeaway: The CHMP has Adopted a Negative Opinion for Omburtamab for the Treatment of CNS/LM Metastasis from Neuroblastoma in Europe NEW YORK, December 16, 2022 (GLOBE NEWSWIRE) - Y-mAbs Therapeutics, Inc. (the "Company" or "Y-mAbs") (Nasdaq: YMAB) a commercial-stage biopharmaceutical

Full Press Release Details

The CHMP has Adopted a Negative
Opinion for Omburtamab for the Treatment of CNS/LM Metastasis from Neuroblastoma in Europe
NEW YORK, December 16, 2022
(GLOBE NEWSWIRE) - Y-mAbs Therapeutics, Inc. (the "Company" or "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, today announced that the European Committee for Medicinal Products for Human use ("CHMP") has adopted a negative
opinion recommending a refusal of the marketing authorization for omburtamab for the treatment of CNS/leptomeningeal metastasis from neuroblastoma
"This recommendation by
the CHMP is disappointing given the significant unmet medical need, which exists for patients with CNS/LM neuroblastoma who have no approved
therapies available. CHMP considered that it was not possible to conclude on the effectiveness of omburtamab as the main study did not
have a randomized comparator. The company does not believe it is feasible to conduct a randomized study in a life-threatening disease
where no other approved therapy is available to these children," said Thomas Gad, founder, President and Interim Chief Executive
Officer. "Our focus is now on assessing the implications of the negative opinion and our plans
for the omburtamab program."
Researchers at Memorial Sloan Kettering Cancer Center ("MSK")
developed omburtamab, which is exclusively licensed by MSK to Y-mAbs. MSK has institutional financial interests related to the compound
Y-mAbs is a commercial-stage biopharmaceutical company focused on the
development and commercialization of novel, antibody-based therapeutic cancer products. In addition to conventional antibodies, the Company's
technologies include bispecific antibodies generated using the Y-BiClone platform and the SADA platform. The Company's broad and
advanced product pipeline includes one FDA-approved product, DANYELZA (naxitamab-gqgk), which targets tumors that express GD2, and
one product candidate at the registration stage, OMBLASTYS (omburtamab), which targets tumors that express B7-H3.
Forward-Looking Statements
Statements in this press release about future expectations, plans and
prospects, as well as any other statements regarding matters that are not historical facts, may constitute "forward-looking statements"
within the meaning of The Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, our expectations
with respect to the omburtanab program and the clinical profile of omburtamab; the development and commercialization of our products,
product candidates and product pipeline; ; and other statements that are not historical facts. Words such as anticipate,''
believe,'' "contemplate," continue,'' could,''
estimate,'' expect,'' "hope," intend,'' may,''
might,'' plan,'' potential,'' predict,''
project,'' should,'' target,'' "will", would''
"goal", "aim", and similar expressions are intended to identify forward-looking statements, although not all forward-looking
statements contain these identifying words. Our product candidates and related technologies are novel approaches to cancer treatment that
present significant challenges. Actual results may differ materially from those indicated by such forward-looking statements as a result
of various factors, including but not limited to: risks associated with our financial condition and need for additional capital; risks
associated with our development work; cost and success of our product development activities and clinical trials; the risks of delay in
the timing of our regulatory submissions or failure to receive approval of our drug candidates; the risks related to commercializing any
approved pharmaceutical product, including the rate and degree of market acceptance of our product candidates; development of our sales
and marketing capabilities and risks associated with failure to obtain sufficient reimbursement for our products; the risks related to
our dependence on third parties, including for conduct of clinical testing and product manufacture; our inability to enter into partnerships;
the risks related to government regulation; risks related to market approval; risks associated with protection of our intellectual property
rights; risks related to employee matters and managing growth; risks related to our common stock; risks associated with the COVID-19 pandemic;
risks associated with the conflict between Russia and Ukraine and sanctions related thereto, macroeconomic conditions, including inflation
and uncertain global credit and capital markets; and other risks and uncertainties affecting the Company including those described in
the "Risk Factors" section included in our Annual Report on Form 10-K for the year ended December 31, 2021 filed
with the the Securities and Exchange Commission (the "SEC") and in our other SEC filings, including our Quarterly Reports
on Form 10-Q for the quarters ended March 31, 2022, June 30, 2022, and September 30, 2022 as well as in our other
SEC filings. Any forward-looking statements contained in this press release speak only as of the date hereof, and the Company undertakes
no obligation to update any forward-looking statement, whether as a result of new information, future events or otherwise except as required
DANYELZA , OMBLASTYS
and Y-mAbs are registered trademarks of Y-mAbs Therapeutics, Inc.
Y-mAbs Therapeutics, Inc.
230 Park Avenue, Suite 3350
Last updated: Dec 16, 2022