News Genmab Announces that Janssen has Received Positive CHMP Opinion Recommending DARZALEX® (daratumumab) Subcutaneous (SC) Formulation for Patients with Newly Diagnosed Light-chain (AL) Amyloidosis May 21, 2021 at 3:08 PM CEST 210521_CA45_DARZALEX SC CHMP Company Announcement Janssen received a positive CHMP opinion for DARZALEX® SC (daratumumab and hyaluronidase-fihj) in combination with bortezomib, cyclophosphamide and dexamethasone for the treatment of adult patients with newly diagnosed systemic light-chain (AL) amyloidosisOpinion based on data from the Phase 3 ANDROMEDA (AMY3001) study CHMP also issued a positive opinion recommending DARZALEX® SC in combination with pomalidomide and dexamethasone for adult patients with relapsed or refractory multiple myeloma, based on the Phase 3 APOLLO (MMY3013) study Copenhagen, Denmark; May 21, 2021 – Genmab A/S (Nasdaq: GMAB) announced today that the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) has adopted a positive opinion and recommended granting marketing authorization for the daratumumab subcutaneous (SC) formulation (daratumumab and hyaluronidase-fihj), known as DARZALEX® SC in the European Union, in combination with bortezomib, cyclophosphamide, and dexamethasone (VCd) for the treatment of adult patients with newly diagnosed systemic light-chain (AL) amyloidosis. The CHMP also issued a positive opinion recommending DARZALEX SC in combination with pomalidomide and dexamethasone (Pd) for the treatment of adult patients with multiple myeloma who have received one prior therapy containing a proteasome inhibitor (PI) and lenalidomide and were lenalidomide refractory, or who have received at least two prior therapies that included lenalidomide and a PI and have demonstrated disease progression on or after the last therapy. Janssen Pharmaceutica NV submitted Type II variation applications to the EMA for these indications in November 2020. In August 2012, Genmab granted Janssen Biotech, Inc. (Janssen) an exclusive worldwide license to develop, manufacture and commercialize daratumumab. “We are extremely pleased about the positive CHMP opinions for DARZALEX SC and hopeful that the positive opinion in AL amyloidosis will lead to the first approved treatment option for European patients with this devastating disease,” said Jan van de Winkel, Ph.D., Chief Executive Officer of Genmab. About the ANDROMEDA (AMY3001) studyThe Phase 3 study (NCT03201965) included 416 patients newly diagnosed with AL amyloidosis. Patients were randomized to receive treatment with either daratumumab and hyaluronidase-fihj in combination with bortezomib (a proteasome inhibitor), cyclophosphamide (a chemotherapy), and dexamethasone (a corticosteroid) or treatment with VCd alone. The primary endpoint of the study was the percentage of patients who achieve hematologic complete response. About the APOLLO (MMY3013) studyThe Phase 3 (NCT03180736), randomized, open-label, multicenter study included 304 patients with multiple myeloma who have previously been treated with lenalidomide and a PI. Patients were randomized 1:1 to either receive daratumumab in combination with Pd or Pd alone. In the original design of the study, patients in the daratumumab plus Pd arm were treated with the intravenous (IV) formulation of daratumumab. As of Amendment 1 to the study protocol, all new subjects in the experimental arm were dosed with the SC formulation of daratumumab and patients who had already begun treatment with IV daratumumab had the option to switch to the SC formulation. The primary endpoint of the study was progression free survival (PFS). The study was conducted in Europe under an agreement between Janssen, the European Myeloma Network (EMN) and Stichting Hemato-Oncologie voor Volwassenen Nederland (HOVON). About AL AmyloidosisAmyloidosis is a disease that occurs when amyloid proteins, which are abnormal proteins, accumulate in tissues and organs. When the amyloid proteins cluster together, they form deposits that damage the tissues and organs. AL amyloidosis most frequently affects the heart, kidneys, liver, nervous system and digestive tract. There is currently no cure for AL amyloidosis or existing approved therapies for AL amyloidosis patients in Europe, though it can be treated with chemotherapy, dexamethasone, stem cell transplants and supportive therapies.1 It is estimated that in 2019 there were 4,388 diagnosed incident cases of AL amyloidosis in the five major European markets.2 About Multiple MyelomaMultiple myeloma is an incurable blood cancer that starts in the bone marrow and is characterized by an excess proliferation of plasma cells.3 Approximately 18,114 new patients were diagnosed with multiple myeloma and approximately 11,063 people died from the disease in the Western Europe in 2020.4 Globally, it was estimated that 176,404 people were diagnosed and 117,077 died from the disease in 2020.5 While some patients with multiple myeloma have no symptoms at all, most patients are diagnosed due to symptoms which can include bone problems, low blood counts, calcium elevation, kidney problems or infections.6 About DARZALEX® SC (daratumumab and hyaluronidase-fihj)Daratumumab is being developed by Janssen Biotech, Inc. under an exclusive worldwide license to develop, manufacture and commercialize daratumumab from Genmab. DARZALEX® SC (daratumumab and hyaluronidase-fihj) is the first subcutaneous CD38 antibody approved in the Europe for the treatment of multiple myeloma. Daratumumab is a human IgG1k monoclonal antibody (mAb) that binds with high affinity to the CD38 molecule, which is highly expressed on the surface of multiple myeloma cells. Daratumumab triggers a person’s own immune system to attack the cancer cells, resulting in rapid tumor cell death through multiple immune-mediated mechanisms of action and through immunomodulatory effects, in addition to direct tumor cell death, via apoptosis (programmed cell death). 7,8, 9, 10, 11 For the full EU Summary of Product Characteristics, please click here. About Genmab Genmab is an international biotechnology company with a core purpose to improve the lives of patients with cancer. Founded in 1999, Genmab is the creator of multiple approved antibody therapeutics that are marketed by its partners. The company aims to create, develop and commercialize differentiated therapies by leveraging next-generation antibody technologies, expertise in antibody biology, translational research and data sciences and strategic partnerships. To create novel therapies, Genmab utilizes its next-generation antibody technologies, which are the result of its collaborative company culture and a deep passion for innovation. Genmab’s proprietary pipeline consists of modified antibody candidates, including bispecific T-cell engagers and next-generation immune checkpoint modulators, effector function enhanced antibodies and antibody-drug conjugates. The company is headquartered in Copenhagen, Denmark with locations in Utrecht, the Netherlands, Princeton, New Jersey, U.S. and Tokyo, Japan. For more information, please visit Genmab.com. Contact: Marisol Peron, Senior Vice President, Global Investor Relations & CommunicationsT: +1 609 524 0065; E: mmp@genmab.com For Investor Relations: Andrew Carlsen, Vice President, Head of Investor RelationsT: +45 3377 9558; E: acn@genmab.com This Company Announcement contains forward looking statements. The words “believe”, “expect”, “anticipate”, “intend” and “plan” and similar expressions identify forward looking statements. Actual results or performance may differ materially from any future results or performance expressed or implied by such statements. The important factors that could cause our actual results or performance to differ materially include, among others, risks associated with pre-clinical and clinical development of products, uncertainties related to the outcome and conduct of clinical trials including unforeseen safety issues, uncertainties related to product manufacturing, the lack of market acceptance of our products, our inability to manage growth, the competitive environment in relation to our business area and markets, our inability to attract and retain suitably qualified personnel, the unenforceability or lack of protection of our patents and proprietary rights, our relationships with affiliated entities, changes and developments in technology which may render our products or technologies obsolete, and other factors. For a further discussion of these risks, please refer to the risk management sections in Genmab’s most recent financial reports, which are available on www.genmab.com and the risk factors included in Genmab’s most recent Annual Report on Form 20-F and other filings with the U.S. Securities and Exchange Commission (SEC), which are available at www.sec.gov. Genmab does not undertake any obligation to update or revise forward looking statements in this Company Announcement nor to confirm such statements to reflect subsequent events or circumstances after the date made or in relation to actual results, unless required by law. Genmab A/S and/or its subsidiaries own the following trademarks: Genmab®; the Y-shaped Genmab logo®; Genmab in combination with the Y-shaped Genmab logo®; HuMax®; DuoBody®; DuoBody in combination with the DuoBody logo®; HexaBody®; HexaBody in combination with the HexaBody logo®; DuoHexaBody®; HexElect®; and UniBody®. DARZALEX® is a trademark of Johnson & Johnson. 1 Mayo Clinic website: www.mayoclinic.com/health/amyloidosis/DS004312 Global Data, “Amyloidosis: Epidemiology Forecast to 2029,” June 20203 American Cancer Society. "What is Multiple Myeloma." Available at http://www.cancer.org/cancer/multiplemyeloma/detailedguide/multiple-myeloma-what-is-multiple-myeloma.Accessed May 2021.4 Globocan 2020. Western Europe Fact Sheet. Available at http://gco.iarc.fr/today/data/factsheets/populations/926-western-europe-fact-sheets.pdf Accessed May 20215 Globocan 2018. World Fact Sheet. Available at https://gco.iarc.fr/today/data/factsheets/cancers/35-Multiple-myeloma-fact-sheet.pdf Accessed May 20216 American Cancer Society. "Sings and Symptoms of Multiple Myeloma" https://www.cancer.org/cancer/multiple-myeloma/detection-diagnosis-staging/signs-symptoms.html. Accessed May 20217 DARZALEX Prescribing information, March 2021 https://www.accessdata.fda.gov/drugsatfda_docs/label/2021/761036s033lbl.pdf Last accessed May 20218 De Weers, M et al. Daratumumab, a Novel Therapeutic Human CD38 Monoclonal Antibody, Induces Killing of Multiple Myeloma and Other Hematological Tumors. The Journal of Immunology. 2011; 186: 1840-1848.9 Overdijk, MB, et al. Antibody-mediated phagocytosis contributes to the anti-tumor activity of the therapeutic antibody daratumumab in lymphoma and multiple myeloma. MAbs. 2015; 7: 311-21.10 Krejcik, MD et al. Daratumumab Depletes CD38+ Immune-regulatory Cells, Promotes T-cell Expansion, and Skews T-cell Repertoire in Multiple Myeloma. Blood. 2016; 128: 384-94.11 Jansen, JH et al. Daratumumab, a human CD38 antibody induces apoptosis of myeloma tumor cells via Fc receptor-mediated crosslinking. Blood. 2012; 120(21): abstract 2974 Company Announcement no. 45CVR no. 2102 3884LEI Code 529900MTJPDPE4MHJ122 Genmab A/SKalvebod Brygge 431560 Copenhagen VDenmark Attachment 210521_CA45_DARZALEX SC CHMP