MYT1

Collaborative clinical study will investigate a novel combination of Debio 0123, Debiopharm’s potent, brain penetrant inhibitor of WEE1, and lunresertib, Repare Therapeutics’ first-in-class PKMYT1 inhibitor LAUSANNE, Switzerland & MONTREAL--(BUSINESS WIRE)-- Debiopharm ( ), a privately-owned, Swiss-based biopharmaceutical company aiming to establish tomorrow’s standards of care to cure cancer and infectious diseases, today announced that it has entered into a clinical study and collaboration agreement with Repare Therapeutics Inc. (“Repare”) (Nasdaq: RPTX), a leading clinical-stage precision oncology company. This clinical collaboration aims to explore the synergy between Debio 0123, a potential best-in-class, brain-penetrant, and highly selective WEE1 inhibitor, and lunresertib, a first-in-class, selective and potent oral, small molecule inhibitor of PKMYT1 with demonstrated anticancer activity. Under the clinical study and collaboration agreement, the combination of lunresertib and Debio 0123 will be evaluated in a new arm of Repare’s ongoing global MYTHIC study (NCT04855656) under Repare’s sponsorship. The Phase 1/1b clinical trial is anticipated to initiate in the first half of 2024. Debiopharm and Repare will collaborate on the design of the trial arm for the development of the combination and will share all costs equally. Debiopharm and Repare will each supply their respective drugs, and each retain all commercial rights to their respective compounds, including as monotherapy or as combination therapies. “We are delighted to enter into this clinical collaboration with Repare, the leader in PKMYT1 inhibition, to reinforce our commitment to the DDR space with our potential best-in-class WEE1 inhibitor. We believe this synthetic lethality approach will bring an innovative precision medicine therapy to patients,” said Bertrand Ducrey, CEO of Debiopharm. “This is the first time that Debiopharm has initiated a collaboration to combine two investigational compounds, demonstrating our excitement by the potential of this therapeutic approach in hard-to-treat cancers.” At the AACR-NCI-EORTC conference held in Boston in October 2023, Repare presented data showing that the combination of lunresertib and Debio 0123 is highly synergistic, and drives rapid and deep tumor regressions (Gallo et al., Poster #A023). Unpublished data independently generated by Debiopharm confirmed the dramatic synergy of the Debio 0123/lunresertib combination in vivo, further supporting the rationale for this clinical collaboration. In addition, several recent preclinical studies published by Repare and its collaborators have demonstrated proof-of-concept for the combination of WEE1 and PKMYT1 inhibition in relevant cancer cell lines and animal models of cancer (Sokhi et al. “Investigating Wee1 and Myt1 combined inhibition as a potential cancer therapeutic strategy”, AACR 2023, Poster #5511; Benada et al., 2023). “Combining with Debiopharm’s highly selective WEE1 inhibitor is the ideal strategy to further extend our leadership in PKMYT1 inhibitor development,” said Lloyd M. Segal, CEO of Repare. “The compelling mechanistic rationale and preclinical data Repare and Debiopharm have each generated for this combination give us confidence in its potential to deliver transformative benefit to patients with high unmet medical need.” About Debio 0123 Debio 0123 is a brain-penetrant, highly selective WEE1 kinase inhibitor. WEE1 is a key regulator of the G2/M and S phase checkpoints, activated in response to DNA damage, allowing cells to repair their DNA before resuming their cell cycle. WEE1 inhibition, particularly in combination with DNA damaging agents, induces an overload of DNA breaks. In conjunction with abrogation of other checkpoints such as G1, the compound pushes the cells through cell cycle without DNA repair, promoting mitotic catastrophe and inducing apoptosis of cancer cells. Currently in research for solid tumors in monotherapy and combination, Debio 0123 is being developed to respond to high unmet needs of patients living with the burden of difficult-to-treat cancers. About Lunresertib Lunresertib (RP-6306) is a first-in-class, selective and potent oral small molecule inhibitor of PKMYT1, a cancer target Repare discovered and identified as synthetic lethal with CCNE1 amplification, FBXW7 and PPP2R1A alterations in solid tumors. Lunresertib is currently the sole PKMYT1 inhibitor known to be in clinical trials and is being evaluated alone and in combinations across several studies in the US, EU and Canada. Repare has presented positive initial Phase 1 data from its ongoing Phase 1 MYTHIC trial (NCT04855656) demonstrating proof of concept for lunresertib alone and in combination. In addition to being well tolerated and having a compelling safety profile, Repare presented anti-tumor activity for lunresertib in combination with camonsertib, an ATR inhibitor developed by Repare and partnered with Roche, expanded clinical studies for which are ongoing. About Repare Therapeutics, Inc. Repare Therapeutics is a leading clinical-stage precision oncology company enabled by its proprietary synthetic lethality approach to the discovery and development of novel therapeutics. The Company utilizes its genome-wide, CRISPR-enabled SNIPRx® platform to systematically discover and develop highly targeted cancer therapies focused on genomic instability, including DNA damage repair. The Company’s pipeline includes lunresertib (also known as RP-6306), a PKMYT1 inhibitor currently in Phase 1/2 clinical development; camonsertib (also known as RP-3500 or RG6526), a potential leading ATR inhibitor currently in Phase 1/2 clinical development and partnered with Roche; RP-1664, a preclinical PLK4 inhibitor program; RP-3467, a preclinical Polθ inhibitor program; as well as additional, undisclosed preclinical programs. For more information, please visit reparerx.com and follow @Reparerx on X (formerly Twitter) and LinkedIn. Debiopharm's Commitment to Patients Debiopharm aims to develop innovative therapies that target high unmet medical needs in oncology and bacterial infections. Bridging the gap between disruptive discovery products and real-world patient reach, we identify high-potential compounds and technologies for in-licensing, clinically demonstrate their safety and efficacy, and then hand stewardship to large pharmaceutical commercialization partners to maximize patient access globally. For more information, please visit We are on Twitter. Follow us @DebiopharmNews at . View source version on businesswire.com: Contacts Debiopharm Contact Dawn Bonine Head of Communications dawn.bonine@debiopharm.com Tel: +41 (0)21 321 01 11 Source: Debiopharm View this news release online at:

Collaborative clinical study will investigate a novel combination of lunresertib, Repare’s first-in-class PKMYT1 inhibitor, and Debio 0123, Debiopharm’s potent, brain-penetrant inhibitor of WEE1 MONTREAL & LAUSANNE, Switzerland--(BUSINESS WIRE)-- Repare Therapeutics Inc. (“Repare” or the “Company”) (Nasdaq: RPTX), a leading clinical-stage precision oncology company, today announced that it has entered into a clinical study and collaboration agreement with Debiopharm ( ), a privately-owned, Swiss-based biopharmaceutical company aiming to establish tomorrow’s standards of care to cure cancer and infectious diseases. This clinical collaboration aims to explore the synergy between lunresertib, a first-in-class, selective and potent oral, small molecule inhibitor of PKMYT1 with demonstrated anticancer activity, and Debio 0123, a potential best-in-class, brain-penetrant and highly selective WEE1 inhibitor. Under the clinical study and collaboration agreement, the combination of lunresertib and Debio 0123 will be evaluated in a new arm of Repare’s ongoing global MYTHIC study (NCT04855656) under Repare’s sponsorship. The Phase 1/1b clinical trial is anticipated to initiate in the first half of 2024. Repare and Debiopharm will collaborate on the design of the trial arm for the development of the combination and will share all costs equally. Repare and Debiopharm will each supply their respective drugs, and each retain all commercial rights to their respective compounds, including as monotherapy or as combination therapies. “Combining with Debiopharm’s highly selective WEE1 inhibitor is the ideal strategy to further extend our leadership in PKMYT1 inhibitor development,” said Lloyd M. Segal, CEO of Repare. “The compelling mechanistic rationale and preclinical data Repare and Debiopharm have each generated for this combination give us confidence in its potential to deliver transformative benefit to patients with high unmet medical need.” At the AACR-NCI-EORTC conference held in Boston in October 2023, Repare presented data showing that the combination of lunresertib and Debio 0123 is highly synergistic, and drives rapid and deep tumor regressions (Gallo et al., Poster #A023). Unpublished data independently generated by Debiopharm confirmed the dramatic synergy of the Debio 0123/lunresertib combination in vivo, further supporting the rationale for this clinical collaboration. In addition, several recent preclinical studies published by Repare and its collaborators have demonstrated proof-of-concept for the combination of WEE1 and PKMYT1 inhibition in relevant cancer cell lines and animal models of cancer (Sokhi et al. “Investigating Wee1 and Myt1 combined inhibition as a potential cancer therapeutic strategy”, AACR 2023, Poster #5511; Benada et al., 2023). “We are delighted to enter into this clinical collaboration with Repare, the leader in PKMYT1 inhibition, to reinforce our commitment to the DDR space with our potential best-in-class WEE1 inhibitor. We believe this synthetic lethality approach will bring an innovative precision medicine therapy to patients,” said Bertrand Ducrey, CEO of Debiopharm. “This is the first time that Debiopharm has initiated a collaboration to combine two investigational compounds, demonstrating our excitement by the potential of this therapeutic approach in hard-to-treat cancers.” About Lunresertib Lunresertib (RP-6306) is a first-in-class, selective and potent oral small molecule inhibitor of PKMYT1, a cancer target Repare discovered and identified as synthetic lethal with CCNE1 amplification, FBXW7 and PPP2R1A alterations in solid tumors. Lunresertib is currently the sole PKMYT1 inhibitor known to be in clinical trials and is being evaluated alone and in combinations across several studies in the US, EU and Canada. Repare has presented positive initial Phase 1 data from its ongoing Phase 1 MYTHIC trial (NCT04855656) demonstrating proof of concept for lunresertib alone and in combination. In addition to being well tolerated and having a compelling safety profile, Repare presented anti-tumor activity for lunresertib in combination with camonsertib, an ATR inhibitor developed by Repare and partnered with Roche, expanded clinical studies for which are ongoing. About Debio 0123 Debio 0123 is a brain-penetrant, highly selective WEE1 kinase inhibitor. WEE1 is a key regulator of the G2/M and S phase checkpoints, activated in response to DNA damage, allowing cells to repair their DNA before resuming their cell cycle. WEE1 inhibition, particularly in combination with DNA damaging agents, induces an overload of DNA breaks. In conjunction with abrogation of other checkpoints such as G1, the compound pushes the cells through cell cycle without DNA repair, promoting mitotic catastrophe and inducing apoptosis of cancer cells. Currently in research for solid tumors in monotherapy and combination, Debio 0123 is being developed to respond to high unmet needs of patients living with the burden of difficult-to-treat cancers. About Repare Therapeutics, Inc. Repare Therapeutics is a leading clinical-stage precision oncology company enabled by its proprietary synthetic lethality approach to the discovery and development of novel therapeutics. The Company utilizes its genome-wide, CRISPR-enabled SNIPRx® platform to systematically discover and develop highly targeted cancer therapies focused on genomic instability, including DNA damage repair. The Company’s pipeline includes lunresertib (also known as RP-6306), a PKMYT1 inhibitor currently in Phase 1/2 clinical development; camonsertib (also known as RP-3500 or RG6526), a potential leading ATR inhibitor currently in Phase 1/2 clinical development and partnered with Roche; RP-1664, a preclinical PLK4 inhibitor program; RP-3467, a preclinical Polθ inhibitor program; as well as additional, undisclosed preclinical programs. For more information, please visit reparerx.com. SNIPRx® is a registered trademark of Repare Therapeutics Inc. Debiopharm's Commitment to Patients Debiopharm aims to develop innovative therapies that target high unmet medical needs in oncology and bacterial infections. Bridging the gap between disruptive discovery products and real-world patient reach, we identify high-potential compounds and technologies for in-licensing, clinically demonstrate their safety and efficacy, and then hand stewardship to large pharmaceutical commercialization partners to maximize patient access globally. For more information, please visit We are on Twitter. Follow us @DebiopharmNews at Forward-Looking Statements This press release contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 and securities laws in Canada. All statements in this press release other than statements of historical facts are “forward-looking statements. These statements may be identified by words such as “aims,” “anticipates,” “believes,” “could,” “estimates,” “expects,” “forecasts,” “goal,” “intends,” “may,” “plans,” “possible,” “potential,” “seeks,” “will” and variations of these words or similar expressions that are intended to identify forward-looking statements, although not all forward-looking statements contain these words. Forward-looking statements in this press release include, but are not limited to, statements regarding: the Company’s clinical collaboration with Debiopharm including the benefits and results that may be achieved through the collaboration; the potential therapeutic benefits of lunresertib in combination with Debio 0123; and the anticipated timing, patient enrollment, outcomes or associated costs of the Phase 1/1b clinical trial of lunresertib in combination with Debio 0123. These forward-looking statements are based on the Company’s expectations and assumptions as of the date of this press release. Each of these forward-looking statements involves risks and uncertainties that could cause the Company’s clinical development programs, future results or performance to differ materially from those expressed or implied by the forward-looking statements. Many factors may cause differences between current expectations and actual results, including: the impacts of macroeconomic conditions, including the COVID-19 pandemic, the conflict in Ukraine, the Hamas-Israel conflict, heightened inflation and uncertain credit and financial markets on the Company’s business, clinical trials and financial position; unexpected safety or efficacy data observed during preclinical studies or clinical trials; clinical trial site activation or enrollment rates that are lower than expected; the risk that Repare may not realize the potential benefits of this collaboration with Debiopharm; the discovery, development and potential commercialization of potential product candidates using Repare’s SNIPRx® platform technology , including the development of lunresertib under the clinical study and collaboration agreement; changes in expected or existing competition; changes in the regulatory environment; the uncertainties and timing of the regulatory approval process; and unexpected litigation or other disputes. Other factors that may cause the Company’s actual results to differ from those expressed or implied in the forward-looking statements in this press release are identified in the section titled "Risk Factors" in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022 filed with the Securities and Exchange Commission (“SEC”) and the Québec Autorité des Marchés Financiers ("AMF") on February 28, 2023, and its other documents subsequently filed with or furnished to the SEC and AMF, including the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2023 filed with the SEC on November 9, 2023. The Company expressly disclaims any obligation to update any forward-looking statements contained herein, whether as a result of any new information, future events, changed circumstances or otherwise, except as otherwise required by law. For more information, please visit reparerx.com and follow Repare on Twitter at @RepareRx and on LinkedIn at . View source version on businesswire.com: Contacts Repare Contact: Robin Garner Vice President and Head of Investor Relations Repare Therapeutics Inc. investor@reparerx.com Investors: Matthew DeYoung Argot Partners repare@argotpartners.com Media: David Rosen Argot Partners david.rosen@argotpartners.com 212-600-1902 Source: Repare Therapeutics Inc. View this news release online at:

NEW YORK--( BUSINESS WIRE )--Schrödinger (Nasdaq: SDGR), whose physics-based computational platform is transforming the way therapeutics and materials are discovered, is providing a detailed review of its proprietary drug discovery and development programs during its Pipeline Day today, December 14, from 10:00 a.m. - 12:30 p.m. ET. “We are excited to share our first clinical data for a proprietary Schrödinger program, SGR-1505, and to outline the opportunities emerging from our broad portfolio of drug discovery programs in multiple therapeutic areas, including oncology, immunology and neurology,” stated Karen Akinsanya, Ph.D., president of R&D, therapeutics at Schrödinger. “Our therapeutics team has been very productive since we started building this portfolio. With two programs in the clinic, multiple programs in late discovery and preclinical development, and our advancing collaborations, we believe the future of our therapeutics portfolio is very promising.” SGR-1505 Clinical Progress and Program Update During Pipeline Day, Schrödinger is presenting new data showing that its novel MALT1 inhibitor, SGR-1505, was well tolerated in a Phase 1 study of 73 healthy volunteers. No drug-related serious adverse events or dose limiting toxicities were observed in the study. In the study, SGR-1505 achieved greater than 90 percent inhibition of IL-2 secretion in activated T cells, confirming target engagement and meeting the pharmacodynamic goals for the study. The data support continued evaluation of SGR-1505 in the ongoing Phase 1 study in patients with relapsed or refractory B-cell malignancies. “The data presented from our successful healthy volunteer study demonstrate that SGR-1505 is well-tolerated with a pharmacokinetic and pharmacodynamic profile that supports continued development,” stated Margaret Dugan, M.D., chief medical officer at Schrödinger. “These data add significantly to our understanding of SGR-1505 and inform our clinical development strategy in hematologic malignancies. The SGR-1505 program is progressing well, and we look forward to continued enrollment in the patient study and reporting initial data in late 2024 or 2025.” Schrödinger is also presenting preclinical data for SGR-1505 demonstrating that SGR-1505 has favorable attributes and the potential for combination activity with standard-of-care agents in B cell malignancies. These data were presented earlier this week at the American Society of Hematology Annual Meeting. Three New Programs: EGFR C797S , PRMT5-MTA and NLRP3 Schrödinger is presenting three new proprietary discovery programs at Pipeline Day, targeting EGFR C797S , PRMT5-MTA and NLRP3. EGFR inhibitors are first-line standard of care agents for advanced non-small cell lung cancer patients with activating EGFR mutations, but relapse often occurs due to the development of resistance mutations, including EGFR C797S . Schrödinger has identified multiple EGFR C797S inhibitors and is advancing wild-type sparing, double mutant CNS-penetrant inhibitors with the potential to address brain metastases in patients whose disease progresses following first-line treatment, and to potentially achieve deeper, more durable responses through new combination regimens. PRMT5-MTA inhibition has demonstrated clinical responses in both hematologic and solid tumors with improved safety versus PRMT5 inhibitors due to a synthetic lethal targeting of cancer cells with MTAP-deletions. Schrödinger has identified selective, potent PRMT5-MTA inhibitors with potential applications in solid tumors, brain metastases and primary CNS tumors. NLRP3 is a validated target, and mutations in the NLRP3 gene are associated with a broad spectrum of inflammatory and auto-immune diseases. Schrödinger has identified structurally distinct, selective, NLRP3 inhibitors with anti-inflammatory activity in preclinical models, and is continuing to optimize peripheral and brain-penetrant leads. Broad Portfolio Addresses Synthetic Lethality and DNA-Damage Repair Schrödinger is advancing multiple oncology programs designed to exploit the intrinsic vulnerabilities of cancer cells through synthetic lethality and inhibition of DNA-damage repair. Today, the company is discussing its synthetic lethality programs, PRMT5-MTA and SGR-3515 (Wee1/Myt1). The company is also reviewing SGR-2921, which targets CDC7, a key regulator of replication stress and DNA-damage repair. Schrödinger is reporting preclinical data showing that SGR-3515 has a differentiated biochemical, biophysical and functional profile, with sustained inhibition of Wee1 and Myt1 in tumor cells. Concurrent loss of function of Wee1 and Myt1 confers selective vulnerability in cancer cells and could offer increased anti-tumor activity. SGR-3515 has potential to treat a broad range of solid tumors, including uterine and ovarian cancers. Schrödinger plans to submit an IND for SGR-3515 in the first half of 2024. Schrödinger is also discussing preclinical data presented at ASH demonstrating that SGR-2921 exhibited better activity compared to other CDC7 inhibitors, and showed anti-proliferative effects in treatment-resistant acute myeloid leukemia (AML) patient-derived samples, as well as reduction of blasts in multiple AML models. A Phase 1 study of SGR-2921 is ongoing in patients with AML or myelodysplastic syndrome, and the company expects to report initial data from the study in late 2024 or 2025. “CDC7 is a promising therapeutic target for the treatment of myelodysplastic syndromes and acute myeloid leukemia, diseases for which there is a significant unmet need in treating both frontline and relapsed/refractory patients,” stated Elie Traer, M.D., Ph.D., associate professor at the Center for Hematologic Malignancies at Oregon Health & Science University. “Targeting CDC7 with emerging investigational therapeutics, such as SGR-2921, represents an opportunity to expand our armamentarium of treatment options beyond existing targeted therapies.” Anticipated Milestones Today, Schrödinger outlined the anticipated milestones for its proprietary pipeline: Report initial data from the Phase 1 study of SGR-1505 in late 2024 or 2025 Report initial data from the Phase 1 study of SGR-2921 in late 2024 or 2025 Submit IND for SGR-3515 in the first half of 2024 and initiate a Phase 1 study in 2024 Submit an IND from its discovery portfolio in 2025 Event Information Schrödinger’s Pipeline Day will begin at 10:00 a.m. ET and is expected to conclude at approximately 12:30 p.m. ET. The live presentation can be accessed in the “Investors” section of Schrödinger’s website and will be archived for approximately 90 days. To participate in the live webcast, please register for the event here . It is recommended that participants register at least 15 minutes in advance of the event. About Schrödinger Schrödinger is transforming the way therapeutics and materials are discovered. Schrödinger has pioneered a physics-based computational platform that enables discovery of high-quality, novel molecules for drug development and materials applications more rapidly and at lower cost compared to traditional methods. The software platform is licensed by biopharmaceutical and industrial companies, academic institutions, and government laboratories around the world. Schrödinger’s multidisciplinary drug discovery team also leverages the software platform to advance a portfolio of collaborative and proprietary programs to address unmet medical needs. Founded in 1990, Schrödinger has more than 800 employees and is engaged with customers and collaborators in more than 70 countries. To learn more, visit www.schrodinger.com , follow us on LinkedIn and Instagram , or visit our blog, Extrapolations.com . Cautionary Note Regarding Forward-Looking Statements This press release contains forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995 including, but not limited to those statements regarding the potential advantages of Schrödinger’s computational platform, the clinical potential and favorable properties of its product candidates, including SGR-1505, SGR-2921 and SGR-3515, the potential for SGR-1505 to be used for the treatment of advanced B-cell malignancies, the potential for SGR-2921 to be used for the treatment of AML or myelodysplastic syndrome, the ability to identify any new product candidates, including from the company’s newly announced drug discovery programs, the timing, progress, and results of clinical trials for its product candidates, and the expected timing of additional IND submissions to the FDA for any product candidates the company identifies. Statements including words such as “aim,” “anticipate,” “believe,” “contemplate,” “continue,” “could,” “estimate,” “expect,” “goal,” “intend,” “may,” “might,” “plan,” “potential,” “predict,” “project,” “should,” “target,” “will,” “would” and statements in the future tense are forward-looking statements. These forward-looking statements reflect Schrödinger’s current views about its plans, intentions, expectations, strategies and prospects, which are based on the information currently available to the company and on assumptions the company has made. Actual results may differ materially from those described in these forward-looking statements and are subject to a variety of assumptions, uncertainties, risks and important factors that are beyond Schrödinger’s control, including the uncertainties inherent in drug development and commercialization, such as the conduct of research activities and the timing of and its ability to initiate and complete preclinical studies and clinical trials, whether results from preclinical and clinical studies will be predictive of the results of later preclinical studies and clinical trials, uncertainties associated with the regulatory review of clinical trials and applications for marketing approvals and the ability to retain and hire key personnel on its business and other risks detailed under the caption “Risk Factors” and elsewhere in the company’s Securities and Exchange Commission filings and reports, including its Quarterly Report on Form 10-Q for the fiscal quarter ended September 30, 2023, filed with the Securities and Exchange Commission on November 1, 2023, as well as future filings and reports by the company. Any forward-looking statements contained in this press release speak only as of the date hereof. Except as required by law, Schrödinger undertakes no duty or obligation to update any forward-looking statements contained in this press release as a result of new information, future events, changes in expectations or otherwise.