• Phase III CASSIOPEIA study of dara­tu­mu­mab in com­bi­na­tion with bor­tez­o­mib, thalido­mide and dexa­meth­a­sone in front line multiple myeloma met the pri­mary end­point of stringent Complete Response (sCR) after induction and con­sol­i­da­tion ther­apy
• Trial sponsored by the French Intergroupe Francophone du Myelome (IFM) in col­lab­o­ration with the Dutch-Belgian Cooperative Trial Group for Hematology Oncology (HOVON)
• Data will be discussed with health author­i­ties for poten­tial regu­la­tory filings

Copenhagen, Denmark (Press Release) – Genmab A/S (Nasdaq Copenhagen: GEN) announced today the study met its pri­mary end­point for Part 1 of the Phase III CASSI­OPEIA study (MMY3006) of dara­tu­mu­mab in com­bi­na­tion with bor­tez­o­mib, thalido­mide and dexa­meth­a­sone (VTD) versus VTD alone as frontline treat­ment for patients who are can­di­dates for au­tol­o­gous stem cell trans­plant (ASCT). The first part of the study met the pri­mary end­point of number of patients that achieved a sCR, which was reported in 28.9% of patients treated with dara­tu­mu­mab in com­bi­na­tion with VTD, com­pared to 20.3% of patients who received VTD alone with an odds ratio of 1.60 (95% CI: 1.21 – 2.12, p ≤ 0.001). In the second part of the study, all responders have been re-randomized to receive either main­te­nance treat­ment with dara­tu­mu­mab mono­therapy or observation (no treat­ment).

Overall, the safety profile of dara­tu­mu­mab in com­bi­na­tion with VTD is con­sis­tent with the known safety profile of the VTD regi­men used in patients receiving ASCT and the known safety profile for dara­tu­mu­mab.

Further analysis of the safety and efficacy data is ongoing and Janssen Biotech, Inc., which licensed dara­tu­mu­mab from Genmab in 2012, will discuss the poten­tial for regu­la­tory sub­missions for this indi­ca­tion with health author­i­ties and IFM/HOVON plans to submit addi­tional data for presentation at an upcoming medical conference and for publication in a peer-reviewed journal.

“Having pre­vi­ously seen pos­i­tive data in the ALCYONE trial, for the frontline treat­ment of patients in­eli­gible for au­tol­o­gous stem cell trans­plant, we are very pleased to see the results from the CASSI­OPEIA study, which presents exciting insights into the poten­tial of dara­tu­mu­mab for newly diag­nosed multiple myeloma patients who received an au­tol­o­gous stem cell trans­plan­ta­tion (ASCT). We also look for­ward to the data from the second part of the study, which will provide further data on the impact of dara­tu­mu­mab mono­therapy as main­te­nance treat­ment,” said Jan van de Winkel, Ph.D., Chief Executive Officer of Genmab.

Today’s news does not impact Genmab’s 2018 financial guidance.

About the CASSIOPEIA (MMY3006) study

This Phase III study is a ran­dom­ized, open-label, multi­center study, run by the French Intergroupe Francophone du Myelome (IFM) in col­lab­o­ration with the Dutch-Belgian Cooperative Trial Group for Hematology Oncology (HOVON) and Janssen Biotech, Inc., in­­clud­ing 1,085 newly diag­nosed subjects with pre­vi­ously untreated symp­tomatic multiple myeloma who are eli­gible for high dose chemo­ther­apy and stem cell trans­plant. In the first part of the study, patients were ran­dom­ized to receive induction and con­sol­i­da­tion treat­ment with dara­tu­mu­mab com­bined with bor­tez­o­mib, thalido­mide (an immuno­modu­la­tory agent) and dexa­meth­a­sone (a corticosteroid) or bor­tez­o­mib, thalido­mide and dexa­meth­a­sone alone. The pri­mary end­point is the number of patients that achieve a sCR. In the second part of the study, patients that achieved a response will undergo a second ran­domization to either receive main­te­nance treat­ment of dara­tu­mu­mab 16 mg/kg every 8 weeks for up to 2 years versus no further treat­ment (observation). The pri­mary end­point of this part of the study is pro­gres­sion free survival (PFS).

About multiple myeloma

Multiple myeloma is an incurable blood cancer that starts in the bone marrow and is char­ac­ter­ized by an excess proliferation of plasma cells.¹ Multiple myeloma is the third most common blood cancer in the U.S., after leukemia and lym­phoma.² Approximately 30,770 new patients are ex­pec­ted to be diag­nosed with multiple myeloma and approx­i­mately 12,770 people are ex­pec­ted to die from the disease in the U.S. in 2018.³ Globally, it was esti­mated that 124,225 people would be diag­nosed and 87,084 would die from the disease in 2015.⁴ 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.⁵

About DARZALEX® (dara­tu­mu­mab)

DARZALEX® (dara­tu­mu­mab) injection for in­tra­venous in­fusion is indicated in the United States in com­bi­na­tion with bor­tez­o­mib, mel­phalan and pred­ni­sone for the treat­ment of patients with newly diag­nosed multiple myeloma who are in­eli­gible for au­tol­o­gous stem cell trans­plant; in com­bi­na­tion with lena­lido­mide and dexa­meth­a­sone, or bor­tez­o­mib and dexa­meth­a­sone, for the treat­ment of patients with multiple myeloma who have received at least one prior ther­apy; in com­bi­na­tion with poma­lido­mide and dexa­meth­a­sone for the treat­ment of patients with multiple myeloma who have received at least two prior ther­a­pies, in­­clud­ing lena­lido­mide and a pro­te­a­some inhibitor (PI); and as a mono­therapy for the treat­ment of patients with multiple myeloma who have received at least three prior lines of ther­apy, in­­clud­ing a PI and an immuno­modu­la­tory agent, or who are double-refractory to a PI and an immuno­modu­la­tory agent.6 DARZALEX is the first mono­clonal anti­body (mAb) to receive U.S. Food and Drug Admin­istra­tion (U.S. FDA) approval to treat multiple myeloma. DARZALEX is indicated in Europe in com­bi­na­tion with bor­tez­o­mib, mel­phalan and pred­ni­sone for the treat­ment of adult patients with newly diag­nosed multiple myeloma who are in­eli­gible for au­tol­o­gous stem cell trans­plant; for use in com­bi­na­tion with lena­lido­mide and dexa­meth­a­sone, or bor­tez­o­mib and dexa­meth­a­sone, for the treat­ment of adult patients with multiple myeloma who have received at least one prior ther­apy; and as mono­therapy for the treat­ment of adult patients with re­lapsed and refractory multiple myeloma, whose prior ther­apy in­cluded a PI and an immuno­modu­la­tory agent and who have dem­onstrated disease pro­gres­sion on the last ther­apy. In Japan, DARZALEX is approved in com­bi­na­tion with lena­lido­mide and dexa­meth­a­sone, or bor­tez­o­mib and dexa­meth­a­sone, for treat­ment of adults with re­lapsed or refractory multiple myeloma. DARZALEX is the first human CD38 mono­clonal anti­body to reach the mar­ket. For more in­­for­ma­tion, visit www.DARZALEX.com.

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).^6,7,8,9,10

Daratumumab is being devel­oped by Janssen Biotech, Inc. under an exclusive world­wide license to develop, manu­fac­ture and com­mer­cial­ize dara­tu­mu­mab from Genmab. A com­pre­hen­sive clin­i­cal devel­op­ment pro­gram for dara­tu­mu­mab is ongoing, in­­clud­ing multiple Phase III studies in smol­der­ing, re­lapsed and frontline multiple myeloma settings and in amy­loid­osis. Additional studies are ongoing or planned to assess the poten­tial of dara­tu­mu­mab in other malignant and pre-malignant diseases, such as NKT-cell lym­phoma, myelo­dys­plastic syn­dromes, B and T-ALL. Dara­tu­mu­mab has received two Break­through Therapy Desig­na­tions from the U.S. FDA, for multiple myeloma, as both a mono­therapy and in com­bi­na­tion with other ther­a­pies.

About Genmab

Genmab is a publicly traded, inter­na­tional bio­technology com­pany specializing in the creation and devel­op­ment of dif­fer­en­ti­ated anti­body thera­peutics for the treat­ment of cancer. Founded in 1999, the com­pany has two approved anti­bodies, DARZALEX® (dara­tu­mu­mab) for the treat­ment of certain multiple myeloma indi­ca­tions, and Arzerra® (ofatumumab) for the treat­ment of certain chronic lym­pho­cytic leukemia indi­ca­tions. Dara­tu­mu­mab is in clin­i­cal devel­op­ment for addi­tional multiple myeloma indi­ca­tions and other blood cancers. A sub­cu­tane­ous for­mu­la­tion of ofatumumab is in devel­op­ment for relapsing multiple sclerosis. Genmab also has a broad clin­i­cal and pre-clinical prod­uct pipe­line. Genmab's tech­nology base consists of val­i­dated and pro­pri­e­tary next generation anti­body tech­nolo­gies - the DuoBody® plat­form for generation of bispecific anti­bodies, the HexaBody® plat­form, which creates effector function en­hanced anti­bodies and the HexElect™ plat­form, which combines two co-dependently acting HexaBody molecules to introduce selectivity while maximizing thera­peutic potency. The com­pany in­tends to leverage these tech­nolo­gies to create oppor­tu­ni­ties for full or co-ownership of future prod­ucts. Genmab has alliances with top tier pharma­ceu­tical and bio­technology com­pa­nies. For more in­­for­ma­tion visit www.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 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. 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®. Arzerra® is a trademark of Novartis AG or its affiliates. DARZALEX® is a trademark of Janssen Pharmaceutica NV.

References

1. American Cancer Society. "Multiple Myeloma Overview." Available at http://www.cancer.org/cancer/multiplemyeloma/detailedguide/multiple-myeloma-what-is-multiple-myeloma. Accessed June 2016.
2. National Cancer Institute. "A Snapshot of Myeloma." Available at www.cancer.gov/research/progress/snapshots/myeloma. Accessed June 2016.
3. American Cancer Society. "What are the key statistics about multiple myeloma?" http://www.cancer.org/cancer/multiplemyeloma/detailedguide/multiple-myeloma-key-statistics. Accessed March 2018
4. GLOBOCAN 2012: Estimated Cancer Incidence, Mortality and Prevalence Worldwide: Number of New Cancers in 2015. Available at: http://globocan.iarc.fr/old/burden.asp?selection_pop=224900&Text-p=World&selection_cancer=17270&Text-c=Multiple+myeloma&pYear=3&type=0&window=1&submit=%C2%A0Execute. Accessed June 2016.
5. American Cancer Society. "How is Multiple Myeloma Diagnosed?" http://www.cancer.org/cancer/multiplemyeloma/detailedguide/multiple-myeloma-diagnosis. Accessed June 2016.
6. DARZALEX Prescribing information, May 2018. Available at: https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/761036s013lbl.pdf Last accessed May 2018
7. 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.
8. 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.
9. 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.
10. 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.

Source: Genmab.