Central Nervous System Neoplasms

Achieved $20.1 million in OJEMDATM (tovorafenib) net product revenue Ended the third quarter with $558.4 million in cash, cash equivalents and short-term investments Company to host conference call and webcast today, October 30, 4:30 p.m. Eastern Time BRISBANE, Calif., Oct. 30, 2024 (GLOBE NEWSWIRE) -- Day One Biopharmaceuticals, Inc. (Nasdaq: DAWN) (“Day One” or the “Company”), a biopharmaceutical company dedicated to developing and commercializing targeted therapies for people of all ages with life-threatening diseases, today announced its third quarter 2024 financial results and highlighted recent corporate achievements. “Our third quarter results demonstrate continued patient demand for OJEMDA, driven by the need for new therapies for children living with pediatric low-grade glioma,” said Jeremy Bender, Ph.D., chief executive officer of Day One. “Looking ahead to 2025, we plan to continue to drive growth by advancing our programs and pipeline, including DAY301, a potential first-in-class ADC targeting PTK7 that we expect to be in the clinic in the coming months.” Program Highlights Strong growth in OJEMDA net revenue with $20.1M in the third quarter of 2024, representing a 145% increase over the second quarter of 2024.Quarterly prescriptions (TRx) grew to 619 in the third quarter of 2024, representing a 159% increase over the second quarter of 2024.Day One expects to dose the first patient in the Phase 1a portion of the Phase 1a/b clinical trial of DAY301 by the end of 2024 or in the first quarter of 2025.Day One provided updated duration of response data from the registrational Phase 2 FIREFLY-1 trial investigating tovorafenib in patients with BRAF-altered, relapsed or progressive pLGG. For the 77 patients enrolled on Arm 1, which was the dataset used to assess OJEMDA’s efficacy, the median duration of response is 18 months.The pivotal Phase 3 FIREFLY-2/LOGGIC clinical trial evaluating tovorafenib as a front-line therapy in patients aged 6 months to 25 years with pLGG continues to enroll patients in the United States, Canada, Europe, Australia and Asia, with more than 100 sites activated. Corporate Highlights and Upcoming Milestones Day One and Ipsen entered into an exclusive licensing agreement to commercialize tovorafenib outside of the U.S. in July 2024. Under the agreement, Day One received approximately $111 million upfront in cash and equity investment at a premium with up to approximately $350 million in additional launch and sales milestone payments as well as tiered double-digit royalties starting at mid-teens percentage on net sales.Day One entered into a definitive agreement for an oversubscribed private placement of its securities for total gross proceeds of approximately $175 million in July 2024. Third Quarter 2024 Financial Highlights Product Revenue, Net: OJEMDA net product revenues were $20.1 million for the third quarter of 2024, the first full quarter of the U.S. launch.License Revenue: License revenue from the sale of ex-U.S. commercial rights for tovorafenib was $73.7 million for the third quarter of 2024.R&D Expenses: Research and development expenses were $33.6 million for the third quarter of 2024 compared to $33.2 million for the third quarter of 2023. The increase was primarily due to the clinical trial activities related to tovorafenib and additional employee compensation costs.SG&A Expenses: Selling, general and administrative expenses were $29.0 million for the third quarter of 2024 compared to $18.3 million for the third quarter of 2023. The increase was primarily due to employee compensation costs, commercial launch activities, and professional service expenses to support the launch of OJEMDA.Net Income/Loss: Net income totaled $37.0 million for the third quarter of 2024 with non-cash stock-based compensation expense of $11.6 million, compared to a net loss of $46.2 million for the third quarter of 2023, with non-cash stock-based compensation expense of $9.6 million.Cash Position: The Company’s cash, cash equivalents and short-term investments totaled $558.4 million as of September 30, 2024. Upcoming Events Two posters on health-related quality of life and drug holiday from the registrational Phase 2 FIREFLY-1 trial investigating tovorafenib in patients with BRAF-altered, relapsed or progressive pLGG will be presented at the Society for Neuro-Oncology Annual Meeting on November 22, 2024.Piper Sandler 36th Annual Healthcare Conference, December 3-5, 2024. Conference Call Day One will host a conference call and webcast today, October 30 at 4:30 p.m. Eastern Time. To access the live conference call by phone, dial 877-704-4453 (domestic) or 201-389-0920 (international), and provide the access code 13745150. Live audio webcast will be accessible from the Day One Investors & Media page. To ensure a timely connection to the webcast, it is recommended that participants register at least 15 minutes prior to the scheduled start time. An archived version of the webcast will be available for replay on the Events & Presentations section of the Day One Investors & Media page for 30 days following the event. About OJEMDA™OJEMDA (tovorafenib) is a Type II RAF kinase inhibitor of mutant BRAF V600, wild-type BRAF, and wild-type CRAF kinases. OJEMDA is indicated for the treatment of patients 6 months of age and older with relapsed or refractory pediatric low-grade glioma (LGG) harboring a BRAF fusion or rearrangement, or BRAF V600 mutation. This indication is approved under accelerated approval based on response rate and duration of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial(s). Tovorafenib was granted Breakthrough Therapy and Rare Pediatric Disease designations by the FDA for the treatment of patients with pLGG harboring an activating RAF alteration, and it was evaluated by the FDA under priority review. Tovorafenib has also received Orphan Drug designation from the FDA for the treatment of malignant glioma and from the European Commission for the treatment of glioma. For more information, please visit www.ojemda.com. About Day One Biopharmaceuticals Day One Biopharmaceuticals believes when it comes to pediatric cancer, we can do better. The Company was founded to address a critical unmet need: the dire lack of therapeutic development in pediatric cancer. Inspired by “The Day One Talk” that physicians have with patients and their families about an initial cancer diagnosis and treatment plan, Day One aims to re-envision cancer drug development and redefine what’s possible for all people living with cancer—regardless of age—starting from Day One. Day One partners with leading clinical oncologists, families, and scientists to identify, acquire, and develop important targeted cancer treatments. The Company’s pipeline includes tovorafenib (OJEMDA™), DAY301 and a VRK1 inhibitor program. Day One is based in Brisbane, California. For more information, please visit www.dayonebio.com or find the Company on LinkedIn or X. Day One uses its Investor Relations website (ir.dayonebio.com), its X handle (x.com/DayOneBio), and LinkedIn Home Page (linkedin.com/company/dayonebio) as a means of disseminating or providing notification of, among other things, news or announcements regarding its business or financial performance, investor events, press releases, and earnings releases, and as a means of disclosing material nonpublic information and for complying with its disclosure obligations under Regulation FD. Cautionary Note Regarding Forward-Looking StatementsThis press release contains “forward-looking” statements within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995, including, but not limited to: Day One’s plans to develop and commercialize cancer therapies, expectations from current and planned clinical trials, the execution of the Phase 2 and Phase 3 clinical trial for tovorafenib as designed, expectations with respect to the timing of Day One’s Phase 1a/b clinical trial of DAY301, any expectations about safety, efficacy, timing and ability to complete clinical trials, release data results and to obtain regulatory approvals for tovorafenib and other candidates in development, and the ability of tovorafenib to treat pLGG or related indications. Statements including words such as “believe,” “plan,” “continue,” “expect,” “will,” “develop,” “signal,” “potential,” or “ongoing” and statements in the future tense are forward-looking statements. These forward-looking statements involve risks and uncertainties, as well as assumptions, which, if they do not fully materialize or prove incorrect, could cause our results to differ materially from those expressed or implied by such forward-looking statements. Forward-looking statements are subject to risks and uncertainties that may cause Day One’s actual activities or results to differ significantly from those expressed in any forward-looking statement, including risks and uncertainties in this press release and other risks set forth in our filings with the Securities and Exchange Commission, including Day One’s ability to develop, obtain and retain regulatory approval for or commercialize any product candidate, Day One’s ability to protect intellectual property, the potential impact of global business or macroeconomic conditions, including as a result of inflation, rising interest rates, instability in the global banking system, geopolitical conflicts and the sufficiency of Day One’s cash, cash equivalents and investments to fund its operations. These forward-looking statements speak only as of the date hereof and Day One specifically disclaims any obligation to update these forward-looking statements or reasons why actual results might differ, whether as a result of new information, future events or otherwise, except as required by law. Day One Biopharmaceuticals, Inc.Condensed Statements of Operations(in thousands, except share and per share amounts)(unaudited) Three Months EndedSeptember 30, Nine Months EndedSeptember 30, 2024 2023 2024 2023 Revenue: Product revenue, net$20,070 $— $28,262 $— License revenue 73,691 — 73,691 — Total revenues 93,761 — 101,953 — Cost and operating expenses: Cost of product revenue 1,590 — 2,297 — Research and development 33,563 33,163 165,879 93,173 Selling, general and administrative 28,972 18,275 85,715 53,374 Total cost and operating expenses 64,125 51,438 253,891 146,547 Income (loss) from operations 29,636 (51,438) (151,938) (146,547)Non-operating income: Gain from sale of priority review voucher — — 108,000 — Investment income, net 5,322 5,291 13,649 12,163 Other income (expense), net 1,197 (3) 1,177 (22)Total non-operating income, net 6,519 5,288 122,826 12,141 Income (loss) before income taxes 36,155 (46,150) (29,112) (134,406)Income tax benefit (expense) 882 — (670) — Net income (loss) 37,037 (46,150) (29,782) (134,406)Net income (loss) per share - basic$0.38 $(0.54) $(0.33) $(1.73)Net income (loss) per share - diluted$0.38 $(0.54) $(0.33) $(1.73)Weighted-average number of common shares used in net income (loss) per share - basic 96,623,123 85,952,501 90,164,895 77,682,237 Weighted-average number of common shares used in net income (loss) per share - diluted 96,937,759 85,952,501 90,164,895 77,682,237 Day One Biopharmaceuticals, Inc.Selected Condensed Balance Sheet Data(in thousands)(unaudited) September 30,2024 December 31,2023Cash, cash equivalents and short-term investments$558,383 $366,347 Total assets 600,807 376,048 Total liabilities 45,344 29,508 Accumulated deficit (488,367) (458,585)Total stockholders’ equity 555,463 346,540 DAY ONE MEDIALaura Cooper, Head of Communications media@dayonebio.com DAY ONE INVESTORSLifeSci Advisors, PJ Kelleherpkelleher@lifesciadvisors.com

SOMERVILLE, Mass., Oct. 30, 2024 /PRNewswire/ -- Aitia, a biotech company pioneering the use of causal AI and Digital Twins in drug discovery and development, is expanding its collaboration with Servier, a global and independent pharmaceutical company, to tackle gliomas, a broad group of brain cancers. This collaboration aims to use Aitia's breakthrough technology which is powered by millions of data points from patient cancer tissues to find new treatments for this deadly disease. Under the terms of the collaboration, Aitia and Servier will work together to discover and, validate novel drug targets and develop novel drug candidates for glioma using Aitia's Gemini Digital Twins and Servier's therapeutic discovery and clinical development expertise in oncology. This collaboration will include exploration of the heterogeneous biology of these brain cancers, mechanisms of resistance, and drug response at the individual patient level. In a recent breakthrough in another form of glioma, specifically Grade 2 astrocytoma or oligodendroglioma with a susceptible IDH1 or IDH2 mutation following surgery including biopsy, sub-total resection, or gross total resection in adult and pediatric patients 12 years and older, Servier recently announced approval of the brain cancer drug, VORANIGO, the first approved drug for this disease area in almost 25 years. Gliomas, tumors that originate in the brain or spinal cord from glial cells, affects more than 190,000 people worldwide annually. The most aggressive form of glioma, glioblastoma, has an average survival time after diagnosis of approximately 15 months, with less than 7% of patients surviving beyond five years, according to the National Brain Tumor Society. Despite standard treatments like surgery, radiation and chemotherapy, glioblastoma has a high rate of recurrence and there are currently no curative therapies. "We are excited to expand our collaboration with Aitia into gliomas as we continue to prioritize brain cancer after our recent positive results and approval of VORANIGO in the US and in growing number of territories," said Fabien Schmidlin, Global Head of Translational Medicine at Servier. "At Servier, we are committed to advancing therapies for cancer patients with high unmet medical needs, and we believe that integrating Aitia's Gemini Digital Twins with our expertise in oncology, particularly in targeting molecular mutations, could open new avenues for more effective treatments." "Glioma is the among the deadliest forms of cancer, and the lack of broadly effective treatments highlights the urgent need for new approaches that leverage the growth of genetic and multi-omic patient data and breakthroughs in AI," said Colin Hill, CEO and co-founder of Aitia. "We believe that our Gemini Digital Twins, along with Servier's drug discovery and clinical development expertise in hard-to-treat cancers can lead to new breakthrough therapies for this disease." This collaboration represents the fourth area of research Aitia and Servier are collaborating on. The companies began their partnership in 2022, to advance drug discovery, translational, and clinical development efforts in Multiple Myeloma, then expanding in 2023 to include drug discovery and development for pancreatic cancer, and again in January 2024 to discover patient responders for Servier's LRRK2 inhibitor in Parkinson's disease. Aitia's approach centers on two key innovations: causal AI and Gemini Digital Twins. Causal AI goes beyond correlative associations to identify which genetic or molecular changes drive diseases and patient response to therapies. Gemini Digital Twins are virtual models that are reverse-engineered from huge quantities of genetic, multi-omic, and clinical data from patients that reveal how genes, proteins, and other molecules interact within cells and tissues to drive clinical outcomes. These Gemini Digital Twins of a specific disease allow researchers to rapidly test billions of experiments such as gene and protein knockdowns or application of a drug candidate in a human patient context versus animal models or cells in petri dishes. These high-throughput "virtual experiments" in patient-derived Gemini Digital Twins leads to discovering and selecting drug candidates that are more likely to succeed in clinical trials in specific patient populations. About Aitia Aitia is an AI-enabled biotechnology company deploying causal AI and creating Gemini Digital Twins to discover the next generation of breakthrough drugs in neurodegenerative diseases and oncology, including a lead program in Huntington's disease. By leveraging the convergence of multi-omic patient data, high-performance computing, and causal AI, Aitia's Gemini Digital Twins reveal the hidden biological mechanisms of disease to transform the discovery and development of new therapeutics. To date, Gemini Digital Twins have been used to accelerate R&D in oncology, neurodegeneration, cardiometabolic, and immunology. Media Contact: Isabelle Caffry Senior Director, Strategy & Corporate Development [email protected] +1-617-374-2300 Ryan Flinn In Like Flinn Communications [email protected] +1 510-207-7616 SOURCE Aitia WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED

Letters of Intent Due by December 17, 2024 CHICAGO, Oct. 30, 2024 /PRNewswire/ -- The Metastatic Brain Tumor Collaborative (MBTC), created by the American Brain Tumor Association (ABTA), announced a request for applications for one-year, $50,000 research grants. Faculty – including early-career faculty – are encouraged to apply. Applicants should propose high-risk, high-impact research projects that will improve the understanding of brain metastasis and have the potential to change current diagnostic or treatment paradigms for metastatic brain tumor care. The letter of intent deadline for all interested applicants is December 17, 2024, and researchers can access the request for applications here. "When the ABTA discovered the lack of patient advocacy organizations dedicated to metastatic brain tumor education and support, we formed the Metastatic Brain Tumor Collaborative to bring together like-minded organizations who recognized more needs to be done to serve this patient population," said Nicole Willmarth, Chief Mission Officer of ABTA. "This new partnered research grant underscores our collective commitment to accelerate research and treatment discovery in metastatic brain tumors, understanding how providing vital seed money for promising new research can change lives." The MBTC partners working to support this research opportunity focused on CNS Metastasis, include the ABTA, Kidney Cancer Association, LUNGevity Foundation, the Melanoma Research Foundation, and Metastatic Breast Cancer Alliance. The larger MBTC (ten organizations in all) aims to support and empower patients diagnosed with a metastatic brain tumor and to collaboratively advance research that addresses the needs of this patient population. Metastatic brain tumors start somewhere else in the body and travel to the brain. Lung, breast, kidney, colon, and melanoma (skin) cancers are the most common primary cancers that spread to the brain. Metastatic brain tumors are the most common type of brain tumors in adults. Current estimates suggest approximately 200,000 adults are diagnosed annually in the United States, and the average prognosis following diagnosis is only a few months. MBTC is guided by national medical experts and offers a host of free educational resources for patients facing a metastatic brain tumor diagnosis. In addition, a first-of-its-kind survey of patients, caregivers and physicians on the diagnosis and treatment of brain metastases – conducted by the ABTA as part of the MBTC – revealed disparities in practice patterns and communication around metastatic brain tumors. The survey results, published in the journal Neuro-Oncology Practice, highlight the need to increase accessibility to clinical trials, establish clear standards of care and improve physician-patient communication reflective of the unique needs of patients with brain metastases. The survey also highlighted the need for more research on CNS metastases, which was the driving force behind developing a new grant mechanism to specifically fund research to improve care for this patient population. The MBTC appreciates the unwavering support of its partner organizations across the variety of programs for patients and now researchers, including Aim at Melanoma, Go2 for Lung Cancer, Fight Colorectal Cancer, Kidney Cancer Association, Living Beyond Breast Cancer, LUNGevity Foundation, the Melanoma Research Foundation, Metastatic Breast Cancer Alliance, Society for Neuro-Oncology, and Susan G. Komen. About the American Brain Tumor Association Founded in 1973, the American Brain Tumor Association provides comprehensive resources to support the complex needs of brain tumor patients and caregivers, across all ages and tumor types, as well as the critical funding of research in the pursuit of breakthroughs in brain tumor diagnoses, treatments, and care. To learn more, visit, abta.org or call 800-886-ABTA (2282). SOURCE American Brain Tumor Association WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED