On March 15, 2016 Spectrum Pharmaceuticals (NasdaqGS: SPPI), a biotechnology company with fully integrated commercial and drug development operations with a primary focus in Hematology and Oncology, reported that the U.S. Food and Drug Administration (FDA) has granted approval of EVOMELA for use in two indications: 1) use as a high-dose conditioning treatment prior to hematopoietic progenitor (stem) cell transplantation (ASCT) in patients with multiple myeloma (MM), and 2) for the palliative treatment of patients with MM for whom oral therapy is not appropriate (Press release, Spectrum Pharmaceuticals, MAR 15, 2016, View Source [SID:1234509559]). This is the first product to be FDA-approved for the high-dose conditioning indication in MM.
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"I am very proud to announce that Spectrum has been able to bring another new cancer drug to the market," said Rajesh C. Shrotriya, MD, Chairman and Chief Executive Officer of Spectrum Pharmaceuticals. "This represents the commercialization of our sixth Hematology/Oncology product in the U.S. Our EVOMELA formulation does not contain propylene glycol and is reconstituted and admixed with normal saline. This new formulation also uses Captisol technology, which allows the admixture solution to be stable for 4 hours at room temperature in addition to the 1 hour following reconstitution and has been used in several other FDA-approved products. We are very excited about the approval of EVOMELA as this fits seamlessly into our existing commercial infrastructure. In addition to our five other currently marketed products, we believe revenues from EVOMELA will help us expeditiously develop the potential blockbusters that we have in our late-stage pipeline."
"The approval of EVOMELA marks the first new formulation of melphalan approved by the FDA, since its initial approval in 1964," said Dr. Parameswaran Hari, Armand J. Quick/William F. Stapp Professor of Hematology at the Medical College of Wisconsin, Director of the Adult Blood and Marrow Transplant Program at Froedtert Hospital and the Section Head of Hematologic Malignancies and Transplantation, in the Division of Hematology and Oncology in the Department of Medicine. "Melphalan is extensively used in the treatment of multiple myeloma and is the main drug in conditioning therapy pre-transplant. EVOMELA’s new formulation does not contain propylene glycol and is stable for 4 hours at room temperature in addition to the 1 hour following reconstitution."
Spectrum Pharmaceuticals gained global development and commercialization rights to EVOMELA from Ligand Pharmaceuticals Incorporated (NASDAQ: LGND) in March 2013. Spectrum assumed responsibility for completing the pivotal Phase 2 clinical trial, and was responsible for filing the NDA. Under the license agreement, Ligand received a license fee and is eligible to receive milestone payments, as well as royalties following potential commercialization.
About Multiple Myeloma
Multiple Myeloma is a systemic malignancy of plasma cells that accumulate in the bone marrow, usually associated with monoclonal antibody secretion, and results in bone marrow failure and bone destruction. It is the second most common hematologic disease with nearly 30,000 new cases projected in the US in 2016 and over 11,000 deaths annually (American Cancer Society Stats, 2016). The rate of ASCT for patients with MM is growing by approximately 3.3% annually.
Melphalan is the most commonly used IV agent for high-dose conditioning for patients undergoing ASCT for MM. The current IV melphalan market is approximately $100 million annually, with predominant use in ASCT; EVOMELA is the only intravenous melphalan product that is approved for use in the high-dose conditioning indication.
About EVOMELA
EVOMELA was approved by FDA based on its bioequivalence to the standard melphalan formulation (Alkeran) in a Phase 2 clinical study (Aljitawi et al, Bone Marrow Transplant, 2014) via the 505(b)(2) regulatory pathway. EVOMELA has been granted Orphan Drug Designation by the FDA for its use as a high-dose conditioning regimen for patients with MM undergoing ASCT.
EVOMELA’s new melphalan formulation does not contain propylene glycol. The use of the Captisol technology to reformulate also contributes to the 4-hour admixture stability of EVOMELA at room temperature. This is in addition to the 1 hour stability of reconstituted EVOMELA drug product at room temperature and 24 hour stability at refrigerated temperature (5°C).
Please see the Important Safety Information below and the full prescribing information, including BOXED WARNINGS, for EVOMELA at www.evomela.com.
Important Safety Information
WARNING: SEVERE BONE MARROW SUPPRESSION, HYPERSENSITIVITY, and LEUKEMOGENICITY
Severe bone marrow suppression with resulting infection or bleeding may occur. Controlled trials comparing intravenous (IV) melphalan to oral melphalan have shown more myelosuppression with the IV formulation. Monitor hematologic laboratory parameters.
Hypersensitivity reactions, including anaphylaxis, have occurred in approximately 2% of patients who received the IV formulation of melphalan. Discontinue treatment with EVOMELA for serious hypersensitivity reactions.
Melphalan produces chromosomal aberrations in vitro and in vivo. EVOMELA should be considered potentially leukemogenic in humans.
Contraindications
History of serious allergic reaction to melphalan.
Warnings and Precautions
Nausea, vomiting, diarrhea or oral mucositis may occur. Provide supportive care using antiemetic and antidiarrheal medications as needed.
Hepatic disorders ranging from abnormal liver function tests to clinical manifestations such as hepatitis and jaundice have been reported after treatment with melphalan. Hepatic veno-occlusive disease has also been reported. Monitor liver chemistries.
EVOMELA can cause fetal harm when administered to a pregnant woman. Advise females of reproductive potential to avoid pregnancy during and after treatment with EVOMELA. If this drug is used during pregnancy or if the patient becomes pregnant while taking this drug, advise the patient of potential risk to the fetus.
Melphalan-based chemotherapy regimens have been reported to cause suppression of ovarian function in premenopausal women, resulting in persistent amenorrhea in approximately 9% of patients. Reversible or irreversible testicular suppression has also been reported.
Adverse Reactions
The most common adverse reactions observed in at least 50% of patients with multiple myeloma treated with EVOMELA were neutrophil count decreased (100%), white blood cell count decreased (100%), lymphocyte count decreased (98%), platelet count decreased (98%), diarrhea (93%), nausea (90%), fatigue (77%), hypokalemia (74%), anemia (66%), and vomiting (64%).
In a single-arm clinical study, twelve (20%) patients with multiple myeloma who received EVOMELA conditioning for ASCT experienced a treatment emergent serious adverse reaction. The most common serious adverse reactions ( > 1 patient, 1.6%) were pyrexia, hematochezia, febrile neutropenia, and renal failure.
In a randomized clinical trial studying the palliative treatment of patients with multiple myeloma, severe myelotoxicity (WBC ≤1,000 and/or platelets ≤25,000) was more common in the IV melphalan arm (28%) than in the oral melphalan arm (11%).
Drug Interactions
No formal drug interaction studies have been conducted. When nalidixic acid and IV melphalan are given simultaneously, the incidence of severe hemorrhagic necrotic enterocolitis has been reported to increase in pediatric patients.
Use in Specific Populations
It is not known whether melphalan is present in human milk. Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from melphalan, breastfeeding is not recommended during treatment with EVOMELA.
Advise females of reproductive potential to avoid pregnancy, which may include the use of effective contraception methods, during and after treatment with EVOMELA.
For Palliative Treatment, consider dose reduction for patients with renal impairment receiving EVOMELA.
About Captisol
Captisol is a patent-protected, chemically modified cyclodextrin with a structure designed to optimize the solubility and stability of drugs. Captisol was invented and initially developed by scientists in the laboratories of Dr. Valentino Stella at the University of Kansas’ Higuchi Biosciences Center for specific use in drug development and formulation. This unique technology has enabled six FDA-approved products, including Onyx Pharmaceuticals’ Kyprolis, Baxter International’s Nexterone and Merck’s NOXAFIL IV. There are also more than 30 Captisol-enabled products currently in clinical development.