Seattle Genetics Announces ADCETRIS® (Brentuximab Vedotin) Approval in Japan for Frontline Hodgkin Lymphoma

On September 21, 2018 Seattle Genetics, Inc. (Nasdaq: SGEN) reported that its collaborator, Takeda Pharmaceutical Company Limited (Takeda), has received approval from the Japanese Ministry of Health, Labour and Welfare for ADCETRIS (brentuximab vedotin) in combination with doxorubicin, vinblastine and dacarbazine (AVD) as a frontline treatment option for CD30-positive Hodgkin lymphoma patients in Japan (Press release, Seattle Genetics, SEP 21, 2018, View Source [SID1234529517]). As a result, Seattle Genetics will receive a milestone payment from Takeda of $10 million. The approval in Japan was based on the positive outcome from the phase 3 ECHELON-1 trial.

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"This approval marks another important milestone in expanding the ADCETRIS brand globally and redefining the way newly diagnosed Hodgkin lymphoma patients are treated around the world," said Clay Siegall, Ph.D., President and Chief Executive Officer of Seattle Genetics. "ADCETRIS is approved in 71 countries and generated global sales of approximately $640 million in 2017, underscoring its progress toward becoming the foundation of therapy for patients with CD30-expressing lymphomas."

Seattle Genetics and Takeda are jointly developing ADCETRIS. Under the terms of the collaboration agreement, Seattle Genetics has U.S. and Canadian commercialization rights and Takeda has rights to commercialize ADCETRIS in the rest of the world. Seattle Genetics and Takeda are funding joint development costs for ADCETRIS on a 50:50 basis, except in Japan where Takeda is solely responsible for development costs. Seattle Genetics is entitled to receive progress- and sales-dependent milestone payments. In addition, Seattle Genetics receives tiered double-digit royalties with percentages ranging from the mid-teens to mid-twenties based on net sales of ADCETRIS within Takeda’s territories.

About Hodgkin Lymphoma

Lymphoma is a general term for a group of cancers that originate in the lymphatic system. There are two major categories of lymphoma: Hodgkin lymphoma and non-Hodgkin lymphoma. Classical Hodgkin lymphoma is distinguished from other types of lymphoma by the presence of one characteristic type of cell, known as the Reed-Sternberg cell. The Reed-Sternberg cell expresses CD30. According to the Lymphoma Coalition, over 62,000 people worldwide are diagnosed with Hodgkin lymphoma each year and approximately 25,000 people die each year from this cancer.

About ADCETRIS (brentuximab vedotin)

ADCETRIS is being evaluated broadly in more than 70 clinical trials, including the ongoing phase 3 ECHELON-2 trial in frontline peripheral T-cell lymphomas (also known as mature T-cell lymphoma), the completed phase 3 ALCANZA trial in cutaneous T-cell lymphoma (CTCL) and the completed ECHELON-1 trial in previously untreated Hodgkin lymphoma, as well as trials in many additional types of CD30-positive lymphomas.

ADCETRIS is an ADC comprising an anti-CD30 monoclonal antibody attached by a protease-cleavable linker to a microtubule disrupting agent, monomethyl auristatin E (MMAE), utilizing Seattle Genetics’ proprietary technology. The ADC employs a linker system that is designed to be stable in the bloodstream, but to release MMAE upon internalization into CD30-expressing tumor cells.

ADCETRIS injection for intravenous infusion has received FDA approval for five indications in adult patients with: (1) previously untreated Stage III or IV classical Hodgkin lymphoma (cHL), in combination with chemotherapy, (2) cHL at high risk of relapse or progression as post-autologous hematopoietic stem cell transplantation (auto-HSCT) consolidation, (3) cHL after failure of auto-HSCT or failure of at least two prior multi-agent chemotherapy regimens in patients who are not auto-HSCT candidates, (4) sALCL after failure of at least one prior multi-agent chemotherapy regimen, and (5) primary cutaneous anaplastic large cell lymphoma (pcALCL) or CD30-expressing mycosis fungoides (MF) who have received prior systemic therapy.

Health Canada granted ADCETRIS approval with conditions for relapsed or refractory Hodgkin lymphoma and sALCL in 2013, and non-conditional approval for post-autologous stem cell transplantation (ASCT) consolidation treatment of Hodgkin lymphoma patients at increased risk of relapse or progression.

ADCETRIS received conditional marketing authorization from the European Commission in October 2012. The approved indications in Europe are: (1) for the treatment of adult patients with relapsed or refractory CD30-positive Hodgkin lymphoma following ASCT, or following at least two prior therapies when ASCT or multi-agent chemotherapy is not a treatment option, (2) the treatment of adult patients with relapsed or refractory sALCL, (3) for the treatment of adult patients with CD30-positive Hodgkin lymphoma at increased risk of relapse or progression following ASCT, and (4) for the treatment of adult patients with CD30-positive cutaneous T-cell lymphoma (CTCL) after at least one prior systemic therapy.

ADCETRIS has received marketing authorization by regulatory authorities in 71 countries for relapsed or refractory Hodgkin lymphoma and sALCL. See select important safety information, including Boxed Warning, below.