Primitive Neuroectodermal Tumors

Agreement pairs Norgine’s commercial expertise and leading European footprint with PEDMARQSI®, the first and only approved therapy in the European Union and U.K. for reducing the risk of cisplatin-induced hearing loss in pediatric patients with localized, non-metastatic solid tumors Fennec will receive €40 million in upfront and up to €210 million in additional commercial and regulatory milestones, and tiered royalties up to the mid-twenties Enhances Norgine’s commitment to bringing transformative therapies to patients in Europe, U.K., Australia, and New Zealand who currently do not have access to a therapy to treat this life altering condition RESEARCH TRIANGLE PARK, N.C. and UXBRIDGE, United Kingdom, March 17, 2024 (GLOBE NEWSWIRE) -- Fennec Pharmaceuticals Inc. (NASDAQ: FENC; TSX: FRX), a commercial stage specialty pharmaceutical company, and Norgine, a leading European specialist pharmaceutical company, today announced an exclusive licensing agreement under which Norgine will commercialize PEDMARQSI® in Europe, Australia and New Zealand. PEDMARQSI is the first and only approved therapy in the EU and U.K. for the prevention of ototoxicity (hearing loss) induced by cisplatin chemotherapy in patients 1 month to < 18 years of age with localized, non-metastatic solid tumors. Under the terms of the licensing agreement, Fennec will receive €40 million in upfront consideration and up to €210 million in additional commercial and regulatory milestone payments and double-digit tiered royalties on net sales of PEDMARQSI in the licensed territories up to the mid-twenties. Norgine will be responsible for all commercialization activities in the licensed territories and will hold all marketing authorizations in the licensed territories. It is estimated that more than 5,000 pediatric patients annually are eligible for platinum-based chemotherapy in Europe. PEDMARQSI was granted EU marketing authorization by the European Commission in June 2023, and received UK approval from the MHRA in October 2023. Approvals were based on safety and efficacy data from two open-label, randomized Phase 3 trials, SIOPEL 6 (pivotal) and Clinical Oncology Group [COG] Protocol ACCL0431. The studies compared PEDMARQSI plus cisplatin-based regimens to cisplatin-based regimens alone for the reduction of cisplatin-induced hearing loss in pediatric patients. PEDMARQSI holds eight years plus two years of data and market protection in Europe based on its Pediatric Use Marketing Authorization. Approval in Switzerland, Australia and New Zealand will also be pursued. The first study (SIOPEL-6) involved 114 children with hepatoblastoma (a cancer of the liver), with an average age of about 19 months. The results showed that 35% (20 out of 57) of children who received PEDMARQSI 6 hours after each dose of cisplatin developed hearing loss compared with 67% (35 out of 52) of children who only received cisplatin. The second study involved 125 children aged 1 month to 18 years with different types of cancer, including hepatoblastoma, neuroblastoma (a cancer of immature nerve cells) and tumours of the central nervous system. The study found that hearing loss was experienced by 29% (14 out of 49) of children who received PEDMARQSI after each cisplatin dose compared with 56% (31 out of 55) of those who received only cisplatin. “We are delighted to partner with Norgine, who shares our belief in the potential of PEDMARQSI to mitigate the risk of permanent and irreversible hearing loss that can occur in pediatric patients treated with cisplatin. Further, this partnership is an important step in achieving our mission of expanding PEDMARQSI to patients across the globe who are at risk of suffering from cisplatin-induced ototoxicity,” said Rosty Raykov, Chief Executive Officer of Fennec Pharmaceuticals. “From a deal perspective, the terms provided us many important benefits, including an upfront payment further solidifying our balance sheet, attractive economic terms providing meaningful participation in the ex-US success of PEDMARQSI and an experienced partner to successfully launch PEDMARQSI in the licensed territory.” Chris Bath, Chief Executive Officer of Norgine, said, “We are thrilled to announce our partnership with Fennec, to bring this vital medicine to pediatric patients who are being treated with cisplatin, across Europe and ANZ. We look forward to working with the Fennec team and launching PEDMARQSI in our territories in the coming months, establishing it as the standard of care in this critical patient population with high unmet need. This important milestone for our company builds on our 30-year track record of creating partnerships of enduring value and further underscores Norgine’s position as the specialty pharma partner of choice across Europe and ANZ.” Moelis & Company LLC acted as financial advisor, and LaBarge Weinstein LLP acted as legal advisor to Fennec. Arnold & Porter acted as legal advisor to Norgine. About Fennec Pharmaceuticals Fennec Pharmaceuticals Inc. is a specialty pharmaceutical company focused on the development and commercialization of PEDMARK® and PEDMARQSI® to reduce the risk of platinum-induced ototoxicity in pediatric patients. PEDMARK received FDA approval in September 2022 and European Commission Marketing Authorization in June 2023 for PEDMARQSI. Further, PEDMARQSI received U.K. approval in October 2023. PEDMARK has received Orphan Drug Exclusivity in the U.S. for seven years of market protection and PEDMARQSI has received Pediatric Use Marketing Authorization in Europe which includes eight years plus two years of data and market protection. For more information, please visit www.fennecpharma.com. About Norgine Norgine is a leading European specialist pharmaceutical company that has been bringing transformative medicines to patients for over a century. Commitment to transforming people’s lives drives everything Norgine does with fully integrated infrastructure and exceptional partnership approach enabling creative solutions to bring life-changing medicines to patients that they may not otherwise be able to access. Norgine is proud to have helped more than 25 million patients annually around the world and generated over €500 million in net product sales in 2023. Norgine has a direct presence in 18 European countries, as well as Australia and New Zealand and has a strong global network of partnerships in non-Norgine markets. Norgine possesses a flexible and fully integrated pharmaceutical business, with manufacturing (Hengoed, Wales and Dreux, France), third party supply networks and significant product development capabilities, in addition to sales and marketing infrastructure. NORGINE and the sail logo are trademarks of the Norgine group of companies. Forward Looking Statements Except for historical information described in this press release, all other statements are forward-looking. Words such as “believe,” “anticipate,” “plan,” “expect,” “estimate,” “intend,” “may,” “will,” or the negative of those terms, and similar expressions, are intended to identify forward-looking statements. These forward-looking statements include statements about our business strategy, timeline and other goals, plans and prospects, including our commercialization plans respecting PEDMARK® and PEDMARQSI®, the market opportunity for and market impact of PEDMARK and PEDMARQSI, its potential impact on patients and anticipated benefits associated with its use, and potential access to further funding after the date of this release. Forward-looking statements are subject to certain risks and uncertainties inherent in the Company’s business that could cause actual results to vary, including the risks and uncertainties that regulatory and guideline developments may change, scientific data and/or manufacturing capabilities may not be sufficient to meet regulatory standards or receipt of required regulatory clearances or approvals, clinical results may not be replicated in actual patient settings, unforeseen global instability, including political instability, or instability from an outbreak of pandemic or contagious disease, such as the novel coronavirus (COVID-19), or surrounding the duration and severity of an outbreak, protection offered by the Company’s patents and patent applications may be challenged, invalidated or circumvented by its competitors, the available market for the Company’s products will not be as large as expected, the Company’s products will not be able to penetrate one or more targeted markets, revenues will not be sufficient to fund further development and clinical studies, our ability to obtain necessary capital when needed on acceptable terms or at all, the Company may not meet its future capital requirements in different countries and municipalities, and other risks detailed from time to time in the Company’s filings with the Securities and Exchange Commission including its Annual Report on Form 10-K for the year ended December 31, 2022. Fennec disclaims any obligation to update these forward-looking statements except as required by law. For a more detailed discussion of related risk factors, please refer to our public filings available at www.sec.gov and www.sedar.com. PEDMARK®, PEDMARQSI® and Fennec® are registered trademarks of Fennec Pharmaceuticals Inc. Fennec Contacts: Investors:Robert AndradeChief Financial OfficerFennec Pharmaceuticals Inc.+1 919-246-5299 Media:Lindsay RoccoElixir Health Public Relations+1 862-596-1304 Norgine Contacts: Matilde CorucheChief People Officercontact@norgine.com

NEW YORK, March 14, 2024 (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 radioimmunotherapy and antibody-based therapeutic products for the treatment of cancer, today announced that Chief Financial Officer, Bo Kruse, has notified the Company of his resignation. Y-mAbs has commenced a search process for a successor. Mr. Kruse will remain in the Chief Financial Officer role until his successor is identified and joins the Company. He will then continue as a non-executive employee from the time his successor joins the Company through July 31, 2024, after which it is expected that Mr. Kruse will be available to the Company for a period of time to support a smooth transition of the Chief Financial Officer role. “Bo joined at Y-mAbs’ inception and has served as a dedicated financial steward throughout the company’s remarkable growth journey,” said Michael Rossi, President and Chief Executive Officer. “He has been a valued member of our leadership team. Through his responsible capital management, Bo will be leaving Y-mAbs in a strong position as we continue our mission of providing better and safer cancer therapies to patients. On behalf of the Board and the entire team at Y-mAbs, I want to thank Bo for his leadership and commitment to this company. We wish him the best in all his future endeavors.” “I am grateful for Bo’s executive partnership and dedication to Y-mAbs over the last nine years,” said Thomas Gad, Founder, Vice Chairman of the Board of Directors and Chief Business Officer. “Bo played an important role in building what Y-mAbs is today, a financially independent commercial-stage company with an exciting future ahead. We respect Bo’s decision and, with his support, anticipate effecting a smooth transition as we identify and onboard a new Chief Financial Officer.” “It has been an honor and a privilege to serve as Chief Financial Officer of Y-mAbs since its founding in April 2015,” said Mr. Kruse. “While I believe now is the time for a new venture, I have confidence in Y-mAbs’ plans for DANYELZA and the continued advancement of its novel pretargeted radioimmunotherapy technology platform and programs through clinical development. I look forward to following the company’s success.” About Y-mAbs Y-mAbs is a commercial-stage biopharmaceutical company focused on the development and commercialization of novel, radioimmunotherapy and antibody-based therapeutic cancer products. The Company’s technologies include its investigational Self-Assembly DisAssembly (“SADA”) ​Pretargeted Radioimmunotherapy Platform (“PRIT”)​ and bispecific antibodies generated using the Y-BiClone platform. The Company’s broad and advanced product pipeline includes the anti-GD2 therapy DANYELZA® (naxitamab-gqgk), the first FDA-approved treatment for patients with relapsed or refractory high-risk neuroblastoma in the bone or bone marrow after a partial response, minor response, or stable disease to prior therapy. 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 Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Such statements include, but are not limited to, implied and express statements regarding the future of the Company’s business, including with respect to expansion and its goals; the Company’s plans and strategies, development, commercialization and product distribution plans; expectations with respect to the Company’s products and product candidates, including potential benefits thereof, and the potential of the SADA Technology and potential benefits and applications thereof; statements with respect to SADA as a differentiated radioimmunotherapy platform; expectations relating to the SADA Technology, including expectations with respect to current and future clinical and pre-clinical studies and the Company’s research and development programs; expectations that the Company will continue to advance novel oncology therapies and its lead clinical programs to provide better and safer cancer therapies to patients; statements about the transition of the Company’s chief financial officer role and identification and commencement of a successor chief financial officer; 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’’, 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 the Company’s financial condition and need for additional capital; the risks that actual results of the Company’s restructuring plan and revised business plan will not be as expected; risks associated with the Company’s development work; cost and success of the Company’s product development activities and clinical trials; the risks of delay in the timing of the Company’s regulatory submissions or failure to receive approval of its drug candidates; the risks related to commercializing any approved pharmaceutical product including the rate and degree of market acceptance of product candidates; development of sales and marketing capabilities and risks associated with failure to obtain sufficient reimbursement for products; the risks related to the Company’s dependence on third parties including for conduct of clinical testing and product manufacture; the Company’s inability to enter into partnerships; the risks related to government regulation; risks related to market approval, risks associated with protection of the Company’s intellectual property rights; risks related to employee matters and managing growth; risks related to the Company’s common stock, risks associated with macroeconomic conditions, including the conflict between Russia and Ukraine and sanctions related thereto, the state of war between Israel and Hamas and the related risk of a larger conflict, inflation, increased interest rates, uncertain global credit and capital markets and disruptions in banking systems; and other risks and uncertainties affecting the Company including those described in the "Risk Factors" section included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2023 and future filings and reports by the Company. 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. DANYELZA® and Y-mAbs® are registered trademarks of Y-mAbs Therapeutics, Inc. Investor Contact: Courtney Dugan VP, Head of Investor Relations cdu@ymabs.com

Total operating revenues for the full year 2023 were $16.3M, compared to $15.8M for the same period in 2022. As of March 7, 2024, Ryvu's cash position was $57.2M, excluding the first tranche of €8M in venture debt from the EIB, expected imminently. Together with other already secured funding sources, this cash position provides a runway through Q1 2026. Ryvu will present preclinical data from its synthetic lethality pipeline, RVU120, and MEN1703 (SEL24) at the upcoming 2024 American Association for Cancer Research (AACR) Annual Meeting (April 5-10, San Diego, California). After announcing the hematology-focused RVU120 development plan in Q4 2023, Ryvu launched two Phase II studies in early 2024. An additional two Phase II clinical trials for RVU120 are expected to be launched in mid-2024. By the end of the year, the company plans to enroll over 100 patients across all RVU120 Phase II studies and aims to present initial Phase II data. KRAKOW, Poland, March 13, 2024 /PRNewswire/ -- Ryvu Therapeutics (WSE: RVU), a clinical-stage drug discovery and development company focusing on novel small-molecule therapies that address emerging targets in oncology, summarizes its 2023 fiscal year and provides a corporate update. Pawel Przewiezlikowski, co-founder, largest shareholder, and Chief Executive Officer of Ryvu Therapeutics, said: - In 2023, we made significant progress in all key business areas and look forward to multiple catalysts in 2024. We have already started two Phase II studies of RVU120, and around mid-year, we plan to launch two more Phase II studies in hematology. By the end of the year, we plan to enroll more than 100 patients across these clinical trials. We also plan to launch a new Phase II study of MEN1703 (SEL24) in DLBCL, which is being developed under a license agreement with the Menarini Group. Study start-up activities for new trials of both RVU120 and MEN1703 are proceeding quickly. Krzysztof Brzozka, Ph.D., Executive Vice President, and Chief Scientific Officer, said: - We are pleased with the significant progress made in our early-phase projects. Among the most advanced projects from our synthetic lethality platform – PRMT5 and WRN – we plan to identify a clinical candidate in 2024. We are also seeing progress in the programs being developed by our partners – particularly BioNTech and Exelixis. We were excited to achieve the second milestone in the Exelixis collaboration, and we look forward to presenting data on our synthetic lethality assets and novel platform at AACR. 2023 SUMMARY AND RECENT CORPORATE EVENTS RVU120 clinical development plan In 2023 Ryvu prepared for the launch of two Phase II RVU120 trials, which then initiated in early 2024: 1) RVU120 as monotherapy in genetically defined cohorts of patients with relapsed/refractory acute myeloid leukemia (r/r AML) and high-risk myelodysplastic syndromes (HR-MDS, RIVER-52 study), and 2) RVU120 in combination with venetoclax for patients with relapsed/ refractory AML (RIVER-81 study). Ryvu will financially support the REMARK study's Phase II clinical trial of RVU120 in patients with low-risk myelodysplastic syndromes (LR-MDS). REMARK will be conducted as an investigator-initiated study through the EMSCO network, with Prof. Uwe Platzbecker, a globally renowned expert in the field of LR-MDS, as the Coordinating Principal Investigator. Start-up activities have already been launched, and patient enrollment will start in mid-2024. Study start-up is also underway for POTAMI-61, a Phase II study evaluating the efficacy of RVU120 in patients with myelofibrosis (MF). Initiation of patient recruitment is scheduled for mid-2024. Translational research on RVU120 in solid tumors will continue, including combination studies, as well as academic collaborations in the areas of medulloblastoma (MB) and sarcoma-related research. The company plans to enroll more than 100 patients across all RVU120 Phase II trials this year and aims to present initial Phase II data by the end of 2024. RVU120's updated clinical development plan includes studies (RIVER-52, RIVER-81, and POTAMI-61) that could lead to three drug approvals between 2026 and 2027. Key data presented during 2023 conferences In 2023, Ryvu Therapeutics presented data from the RVU120 program at several international conferences, including EHA 2023, ESMO 2023, and ASH 2023: RVU120 monotherapy demonstrated clinical activity in a Phase Ib study in which 50% of evaluable patients with r/r AML or HR-MDS achieved clinical benefit, including a complete response, morphologically leukemia-free status, clinically significant reduction of blasts including reductions that allowed bridging to a bone marrow transplantation, two-year disease stabilization, hematologic improvements, as well as reduction in bone marrow fibrosis. In particular, early signs of efficacy were observed in patients with an NPM1 mutation, DNMT3a mutation, and HR-MDS. The recommended Phase II dose (RP2D) of 250 mg was found to be safe and well-tolerated, achieving RVU120 concentrations in the pharmacologically active range, with a level of target inhibition between 50% and 70%. This level of target inhibition is expected to result in therapeutic efficacy in selected patients or in combinations with synergistic therapies. RVU120 is emerging as a potential candidate in the first-line treatment of AML, supported by its activity against leukemic stem cells. RVU120 acts synergistically with venetoclax in both sensitive and venetoclax-resistant models. At the ENA conference in October 2023, Ryvu presented preclinical data for PRMT5 and the synthetic lethality platform, and Ryvu's partner – Menarini Group, presented preclinical data for MEN1703 in advanced diffuse large B-cell lymphoma (DLBCL). Ryvu has developed potentially best-in-class MTA-cooperative PRMT5 inhibitors with outstanding drug-like physicochemical properties and the ability to block methyltransferase activity of PRMT5 with nanomolar concentrations and bioavailable upon oral administration. The novel, optimized inhibitors exhibit a significantly improved pharmacokinetic profile. In addition, the compounds show antitumor efficacy and target engagement in vivo, providing a solid foundation for further development towards clinical trials. MEN1703 (SEL24) has shown promising antitumor activity in translational studies in various types of DLBCL. These data justify the development of MEN1703 in Phase II clinical trials in this indication. Expansion of MEN1703 (SEL24) development by Ryvu's partner – Menarini Group, to include a new Phase II clinical trial in DLBCL. In September 2023, Ryvu announced the Menarini Group's decision to expand the development of MEN1703 (SEL24) by initiating a new Phase II clinical trial in patients with DLBCL. A Phase II study in DLBCL is scheduled to begin in mid-2024. The goal is to evaluate the activity of MEN1703 (SEL24) as monotherapy and in combination with standard therapy in patients with DLBCL. The study will be initiated based on the potent activity of MEN1703 (SEL24) observed in preclinical lymphoma models. Clinical trials have confirmed the acceptable safety profile and early signs of activity of MEN1703 (SEL24) as a monotherapy. Based on the available data, further program development will continue in patients with DLBCL and potentially in additional indications. Recent financial events On February 3, 2024, Ryvu received notice that the second financial milestone was achieved under the collaboration agreement with Exelixis, resulting in a $2M payment to Ryvu. Ryvu and Exelixis are working under a research collaboration and license agreement to develop antibody-drug conjugates (ADCs) with Ryvu's portfolio of STING agonists. On March 5, 2024, Ryvu received notice from the European Investment Bank (EIB) that it had met the conditions for disbursement of the first venture debt tranche of €8M. These funds are not yet included in the cash balance reported in this press release, but Ryvu expects to receive the funds on March 13, 2024. As part of the agreement announced in August 2022, Ryvu still has access to an additional €14M in venture debt from the EIB. UPCOMING EVENTS Ryvu will attend the AACR Annual Meeting (San Diego, USA) from April 5-10, 2024, to present preclinical data from its synthetic lethality pipeline, RVU120, and MEN1703 (SEL24). 2023 Fiscal Year Financial Update [1] Cash Position – On December 31, 2023, Ryvu Therapeutics held $63.7M in cash, cash equivalents, and bonds, compared to $23.2M at the end of 2022. On March 7, 2024, Ryvu Therapeutics held $57.2M in cash, cash equivalents, and bonds, which excludes €8M in venture debt from the EIB to be received imminently. Operating Revenues – In 2023, Ryvu recognized total operating revenues (including grants) of $16.3M, compared to 2022, when the total operating revenue amounted to $15.8M. Operating costs, excluding the non-cash cost of valuation of the Incentive Program ($2.0M) and valuation of NodThera shares ($0.9M) in the full year 2023, amounted to $37.6M, representing an increase compared to $26.4M in the previous year. Net Loss Attributable to Common Shareholders – In 2023, the net loss attributable to common shareholders, excluding the non-cash cost of valuation of the Incentive Program, amounted to $20.0M, compared to $13.8M in the previous year. About Ryvu Therapeutics Ryvu Therapeutics is a clinical-stage drug discovery and development company focused on novel small-molecule therapies that address emerging targets in oncology. Internally discovered pipeline candidates use diverse therapeutic mechanisms driven by emerging knowledge of cancer biology, including small molecules directed at kinase, synthetic lethality, and immuno-oncology targets. Ryvu's most advanced programs include RVU120, a selective CDK8/CDK19 kinase inhibitor with the potential to treat hematological malignancies and solid tumors, currently in Phase II development (i) as a monotherapy for the treatment of patients with relapsed/refractory acute myeloid leukemia (r/r AML) and high-risk myelodysplastic syndromes (HR-MDS) as well as (ii) in combination with venetoclax for the treatment of patients with r/r AML. Another clinical program, SEL24 (MEN1703), is a dual PIM/FLT3 kinase inhibitor licensed to the Menarini Group. Ryvu Therapeutics has signed multiple partnering and licensing deals with global companies, including BioNTech and Exelixis. The Company was founded in 2007 and is headquartered in Kraków, Poland. Ryvu is listed on the Warsaw Stock Exchange and is a component of the mWIG40 index. For more information, please see . [1] USD figures are provided at a conversion rate of: for the period from 01/01/2023 – 31/12/2023: PLN 4.1823; for the period from 01/01/2022 – 31/12/2022: PLN 4.4679; as of 7/03/2024: PLN 3.9485 as of 31/12/2023: PLN 3.9350 as of 31/12/2022: PLN 4.4018 SOURCE Ryvu Therapeutics