Atezolizumab

PITTSBURGH--(BUSINESS WIRE)--KaliVir Immunotherapeutics, Inc., a clinical-stage biotechnology company developing cutting-edge, multi-mechanistic oncolytic immunotherapies, today announced a clinical trial collaboration and supply agreement with Roche to evaluate VET3-TGI, a novel oncolytic immunotherapy developed using KaliVir’s proprietary Vaccinia Enhanced Template (VET™) platform, in combination with Roche’s atezolizumab (Tecentriq®). This clinical collaboration with Roche allows us to build on the promising clinical and preclinical data by expanding the evaluation of VET3-TGI beyond monotherapy into combination therapy with an established checkpoint inhibitor. The collaboration will support the expansion of KaliVir’s ongoing STEALTH-001 (NCT06444815) Phase 1a/1b clinical study evaluating VET3-TGI in patients with advanced or metastatic solid tumors. Under the terms of the agreement, Roche will supply atezolizumab for use in combination with VET3-TGI across multiple dosing cohorts. VET3-TGI is KaliVir’s lead oncolytic immunotherapy candidate, designed to directly destroy tumor cells while activating a potent immune response through a proprietary payload that includes interleukin-12 (IL-12) and a TGF-β inhibitor. Combining VET3-TGI with atezolizumab aims to amplify immune activation and reshape the tumor microenvironment, with the goal of broadening and deepening clinical benefit for patients with a range of solid tumors. "This clinical collaboration with Roche allows us to build on the promising clinical and preclinical data by expanding the evaluation of VET3-TGI beyond monotherapy into combination therapy with an established checkpoint inhibitor,” said Helena Chaye, CEO of KaliVir Immunotherapeutics. “Partnering with Roche, a global leader in oncology, represents an important step toward advancing innovative therapeutic strategies and exploring the full potential of this novel combination for patients with advanced solid tumors." About VET3-TGI and the STEALTH-001 Study VET3-TGI is a novel oncolytic virus developed using KaliVir’s proprietary VET™ platform, designed to selectively replicate in tumor cells, stimulate local immune responses and remodel the immunosuppressive tumor microenvironment through the expression of IL-12 and a TGFβ inhibitor. The STEALTH-001 study is a first-in-human, open-label, dose escalation and expansion Phase 1a/1b trial assessing both intratumoral and intravenous administration of VET3-TGI. The STEALTH-001 trial is a dose escalation and expansion study evaluating VET3-TGI administered through direct IT injection and IV infusion. The trial is evaluating VET3-TGI as a monotherapy and in combination with a checkpoint inhibitor in patients with pathologically confirmed, advanced, unresectable or metastatic solid tumors. The study continues to progress as planned through its dose escalation phase. About KaliVir Immunotherapeutics, Inc. KaliVir Immunotherapeutics is a clinical-stage biotechnology company at the forefront of developing next-generation oncolytic immunotherapies. By harnessing the unique advantages of the vaccinia platform, KaliVir engineers optimized viral backbones to create innovative candidates for cancer treatment. The Company's proprietary Vaccinia Enhanced Template (VET™) platform integrates multiple genetic modifications, allowing for the systemic delivery of oncolytic vaccinia candidates and the targeted expression of therapeutic transgenes within tumors. Headquartered in Pittsburgh, Pennsylvania, KaliVir is committed to revolutionizing cancer treatment. For more information, visit www.kalivir.com. Tecentriq® (atezolizumab) is a registered trademark of Genentech, a member of the Roche Group.

Lunsumio provides high rates of deep and long-lasting responses in third-line and later follicular lymphoma, a disease that typically becomes harder to treat each time a patient relapses1,2Lunsumio subcutaneous offers a new treatment option that can significantly reduce administration time to approximately one minuteAvailability of Lunsumio SC allows patients to receive treatment aligned to clinical requirements and lifestyle preferences Basel, 19 November 2025 - Roche (SIX: RO, ROG; OTCQX: RHHBY) announced today that the European Commission has granted conditional marketing authorisation of Lunsumio® (mosunetuzumab) subcutaneous (SC) for the treatment of adult patients with relapsed or refractory (R/R) follicular lymphoma (FL) after two or more lines of systemic therapy. Approval is based on results from the phase I/II GO29781 study, which showed that Lunsumio SC had pharmacokinetic non-inferiority compared with intravenous (IV) administration, with no unexpected safety signals.3 “Building on the benefits of its fixed-duration dosing schedule, Lunsumio can now be administered with a one-minute subcutaneous injection, providing people with relapsed or refractory follicular lymphoma an additional treatment option to help meet their individual clinical requirements and lifestyle preferences,” said Levi Garraway, MD, PhD, Roche’s Chief Medical Officer and Head of Global Product Development. “Developing new formulations of our medicines is part of our commitment to offering greater flexibility and a better treatment experience for patients.” Lunsumio SC is a fixed-duration treatment that can be initiated in the outpatient setting and has the potential to substantially reduce treatment administration time with an approximately one-minute injection, compared with a 2-4 hour IV infusion. Lunsumio has shown a favourable benefit-risk profile and high rates of deep and durable remissions with both IV and SC administration routes in third-line or later (3L+) FL.1,4 Lunsumio IV was the first bispecific antibody approved for 3L+ FL and has shown sustained responses, with 57% of patients who achieved a CR still in remission at five years.1 Long-term data from the SC and IV arms of the GO29781 study will be presented at the 67th American Society of Hematology (ASH) Annual Meeting and Exposition. These data have been submitted to other healthcare authorities around the world, including the US Food and Drug Administration. Phase III studies involving Lunsumio SC are ongoing, including the MorningLyte trial investigating Lunsumio SC in combination with lenalidomide in previously untreated FL. Lunsumio, along with Columvi® (glofitamab), is part of Roche’s industry-leading CD20xCD3 bispecific antibody portfolio. Continuing to explore new formulations and combinations of these medicines across different disease areas and lines of treatment is part of Roche’s commitment to improve the patient experience and provide more choice to suit diverse patient and healthcare system needs. About the GO29781 studyThe GO29781 study is a phase II, multicentre, open-label, dose-escalation and expansion study evaluating the safety, efficacy and pharmacokinetics of Lunsumio® (mosunetuzumab), administered both as an intravenous (IV) and subcutaneous (SC) treatment, in people with relapsed or refractory B-cell non-Hodgkin lymphoma. The primary objective for the SC cohort was to show pharmacokinetic (PK) non-inferiority of the SC formulation of Lunsumio compared with the IV formulation, based on the study’s co-primary endpoints. Key secondary endpoints include complete response (CR) rate, objective response rate (ORR), duration of response, progression-free survival, safety and tolerability. This approval is based on a primary analysis that explored Lunsumio administered subcutaneously in patients with 3L+ follicular lymphoma. Results from the primary analysis showed PK non-inferiority compared with IV administration, and the ORR and CR rates in patients treated with the fixed-duration, subcutaneous formulation of Lunsumio were 74.5% (95% confidence interval [CI]: 64.4-82.9%) and 58.5% (95% CI: 46.9-68.6%), respectively, as evaluated by the independent review faculty. The median duration of CR was 20.8 months (95% CI: 18.8-not evaluable [NE]) for patients receiving Lunsumio SC. The most common all-grade adverse events were injection-site reactions (60.6%; all Grade 1-2), fatigue (35.1%), and cytokine release syndrome (CRS; 29.8%). Overall, the rate and severity of CRS were low; events were low grade (Grade 1-2, 27.7%; Grade 3, 2.1%), occurred during cycle 1 and all fully resolved in a median of two days (range 1-15 days).3 About follicular lymphomaFollicular lymphoma (FL) is the most common slow-growing (indolent) form of non-Hodgkin lymphoma, accounting for about one in five cases.2,5 It typically responds well to treatment but is often characterised by periods of remission and relapse.2 The disease typically becomes harder to treat each time a patient relapses, and early progression can be associated with poor long-term prognosis.5 It is estimated that more than 110,000 people are diagnosed with FL each year worldwide.5,6 About Lunsumio® (mosunetuzumab)Lunsumio is a first-in-class CD20xCD3 T-cell engaging bispecific antibody designed to target CD20 on the surface of B cells and CD3 on the surface of T cells. This dual targeting activates and redirects a patient’s existing T cells to engage and eliminate target B cells by releasing cytotoxic proteins into the B cells. A robust clinical development programme for Lunsumio is ongoing, investigating the molecule as a monotherapy and in combination with other medicines, for the treatment of people with B-cell non-Hodgkin lymphomas, including follicular lymphoma and diffuse large B-cell lymphoma, other blood cancers and autoimmune disorders. About Roche in haematologyRoche has been developing medicines for people with malignant and non-malignant blood diseases for more than 25 years; our experience and knowledge in this therapeutic area runs deep. Today, we are investing more than ever in our effort to bring innovative treatment options to patients across a wide range of haematologic diseases. Our approved medicines include MabThera®/Rituxan® (rituximab), Gazyva®/Gazyvaro® (obinutuzumab), Polivy® (polatuzumab vedotin), Venclexta®/Venclyxto® (venetoclax) in collaboration with AbbVie, Hemlibra® (emicizumab), PiaSky® (crovalimab), Lunsumio® (mosunetuzumab) and Columvi® (glofitamab). Our pipeline of investigational haematology medicines includes T-cell-engaging bispecific antibody cevostamab, targeting both FcRH5 and CD3, and Tecentriq® (atezolizumab). Our scientific expertise, combined with the breadth of our portfolio and pipeline, also provides a unique opportunity to develop combination regimens that aim to improve the lives of patients even further. About Roche Founded in 1896 in Basel, Switzerland, as one of the first industrial manufacturers of branded medicines, Roche has grown into the world’s largest biotechnology company and the global leader in in-vitro diagnostics. The company pursues scientific excellence to discover and develop medicines and diagnostics for improving and saving the lives of people around the world. We are a pioneer in personalised healthcare and want to further transform how healthcare is delivered to have an even greater impact. To provide the best care for each person, we partner with many stakeholders and combine our strengths in Diagnostics and Pharma with data insights from clinical practice. For over 125 years, sustainability has been an integral part of Roche’s business. As a science-driven company, our greatest contribution to society is developing innovative medicines and diagnostics that help people live healthier lives. Roche is committed to the Science Based Targets initiative and the Sustainable Markets Initiative to achieve net zero by 2045. Genentech, in the United States, is a wholly owned member of the Roche Group. Roche is the majority shareholder in Chugai Pharmaceutical, Japan. For more information, please visit www.roche.com. All trademarks used or mentioned in this release are protected by law. References[1] Budde E, et al. Fixed treatment duration mosunetuzumab continues to demonstrate clinically meaningful outcomes in patients with relapsed/refractory (R/R) follicular lymphoma (FL) after ≥2 prior therapies: 5-year follow-up of a pivotal Phase II study. Presented at: ASH Annual Meeting and Exposition; 2025 Dec 6-9; San Diego, CA, USA. Abstract #5352.[2] Adult Non-Hodgkin Lymphoma Treatment-Health Professional Version (PDQ®) National Cancer Institute [Internet; cited November 2025]. Available from: https://www.cancer.gov/types/lymphoma/hp/adult-nhl-treatment-pdq#link/_552_toc.[3] Roche data on file.[4] Assouline S, et al. Fixed-duration subcutaneous mosunetuzumab continues to demonstrate high rates of durable responses in patients with relapsed/refractory follicular lymphoma after ≥2 prior therapies: 3-year follow-up from a pivotal Phase II study. Presented at: ASH Annual Meeting and Exposition; 2025 Dec 6-9; San Diego, CA, USA. Abstract #5353.[5] Cancer.Net. Lymphoma - Non-Hodgkin: Subtypes. [Internet; cited November 2025]. Available from: https://www.cancer.net/cancer-types/lymphoma-non-hodgkin/subtypes.[6] World Health Organization. Numbers derived from GLOBOCAN 2022. Non-Hodgkin Lymphoma Factsheet [Internet; cited November2025]. Available from: https://gco-iarc-who-int.libproxy1.nus.edu.sg/media/globocan/factsheets/cancers/34-non-hodgkin-lymphoma-fact-sheet.pdf. Roche Global Media RelationsPhone: +41 61 688 8888 / e-mail: media.relations@roche.com Hans Trees, PhDPhone: +41 79 407 72 58Sileia UrechPhone: +41 79 935 81 48 Nathalie AltermattPhone: +41 79 771 05 25Lorena CorfasPhone: +41 79 568 24 95 Simon GoldsboroughPhone: +44 797 32 72 915Karsten KleinePhone: +41 79 461 86 83 Kirti PandeyPhone: +49 172 6367262 Yvette PetillonPhone: +41 79 961 92 50Dr Rebekka SchnellPhone: +41 79 205 27 03 Roche Investor Relations Dr Bruno EschliPhone: +41 61 68-75284e-mail: bruno.eschli@roche.comDr Sabine BorngräberPhone: +41 61 68-88027e-mail: sabine.borngraeber@roche.com Dr Birgit MasjostPhone: +41 61 68-84814e-mail: birgit.masjost@roche.com Investor Relations North America Loren KalmPhone: +1 650 225 3217e-mail: kalm.loren@gene.com Attachment 20251119_Lunsumio SC EU