Articles tagged with: Viracept
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Swiss researchers have published results of a small clinical trial testing whether nelfinavir, a drug originally used to treat AIDS, can overcome resistance to Revlimid in relapsed multiple myeloma patients.
The trial was motivated by previous research showing that nelfinavir can overcome resistance to Velcade, for a period of time, in many relapsed myeloma patients.
Unfortunately, the results of the more recent nelfinavir trial are not as encouraging as the previous research involving nelfinavir and Velcade. Less than a third of the patients in the more recent trial responded to the three-drug …
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Earlier this month, The Myeloma Beacon published a news article summarizing results of a clinical trial testing the combination of nelfinavir, Velcade, and dexamethasone as a treatment for relapsed multiple myeloma.
Nelfinavir (Viracept) is an orally administered drug that was approved in the 1990s for the treatment of human immunodeficiency virus (HIV), the virus that causes acquired immune deficiency syndrome (AIDS). Nelfinavir has not previously been used for the treatment of multiple myeloma.
Preclinical research has suggested, however, that nelfinavir might make it …
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Results of a small Phase 2 trial conducted in Switzerland indicate that the HIV treatment nelfinavir, in combination with Velcade and dexamethasone, has promising activity in patients with advanced, Velcade-resistant multiple myeloma.
All 34 patients in the Swiss trial had previously been treated with, and stopped responding to, Velcade. All study participants also were previously treated with Revlimid (lenalidomide) and had a median of five overall prior lines of treatment.
In this heavily pretreated patient group, the combination of nelfinavir, Velcade, and dexamethasone nevertheless achieved at least a partial response in 65 …
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Treanda May Enhance Response To Stem Cell Transplant In Myeloma Patients – Results from a Phase 1 clinical trial demonstrate the safety of adding Treanda (bendamustine) to melphalan (Alkeran) as high-dose therapy prior to stem cell transplantation. The researchers state that the side effects of Treanda-melphalan therapy were similar to those expected from melphalan alone. Of the 25 myeloma patients included in the study, the overall response rate was 79 percent, with 38 percent achieving a stringent complete response, 4 percent a complete response, 33 percent a very good partial response, and 4 percent a partial response. Treanda is approved in the United States as a treatment for chronic lymphocytic leukemia and certain lymphomas, and it is being investigated as a treatment for myeloma. It belongs to a class of drugs known as alkylating agents, which also includes melphalan and cyclophosphamide (Cytoxan). These drugs work by damaging the DNA of cancer cells, which in turn causes the cells to die. For more information, please see the study in the journal Biology of Blood and Marrow Transplantation (abstract).
Viracept May Overcome Velcade And Kyprolis Resistance In Multiple Myeloma – Findings from a recent preclinical study show that Viracept (nelfinavir) kills multiple myeloma cells, including those that are resistant to Velcade (bortezomib) and Kyprolis (carfilzomib). In addition, the researchers found that Viracept enhanced the effectiveness of Velcade and Kyprolis, particularly when administered to myeloma cells resistant to Velcade and Kyprolis. Viracept belongs to a class of drugs called protease inhibitors and was approved by the FDA to treat HIV in 1997. Viracept as well as Velcade and Kyprolis limit a cell’s ability to chop up and discard unwanted proteins. The accumulation of these unwanted proteins causes the cells to die. The researchers also investigated the anti-myeloma properties of eight other HIV protease inhibitors but found Viracept to be the most effective. The investigators therefore state that Viracept may be useful to overcome Velcade resistance and believe their results justify clinical study of Viracept in combination with Velcade or Kyprolis. For more information, please refer to the study in Blood Cancer Journal (full text).
Pseudo-Autologous Stem Cell Transplant May Be Feasible Following Relapse After Donor Transplant – Canadian myeloma experts report that a 54-year-old myeloma patient is doing well, remains drug-free, but has a low level of monoclonal protein one year after undergoing a “pseudo-autologous stem cell transplant.” The patient was diagnosed with stage 2 myeloma in May 1997 and was treated with a donor (allogeneic) stem cell transplant, but she relapsed after 12 years. Her physicians then had her undergo a pseudo-autologous stem cell transplant, hoping that she would achieve a similarly long response to the second transplant while avoiding complications associated with a second donor transplant. An autologous transplant typically involves collecting a patient’s own stem cells prior to high-dose chemotherapy, and then reinfusing the stem cells into the patient after the chemotherapy. In this case, the patient’s bone marrow also was repopulated with stem cells from the patient herself, but those stem cells were no longer her own original stem cells. Instead, they were stem cells descended from the donor stem cells she received during her allogeneic transplant in 1997. Thus, this procedure is known as a “pseudo-autologous” transplant. For more information, please see the case study in Bone Marrow Transplantation (subscription required).
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Phase 1 Trial Of All-Oral Ricolinostat-Revlimid-Dexamethasone Combo Begins – Acetylon Pharmaceuticals announced last week the initiation of a Phase 1b clinical trial of ricolinostat (ACY-1215) in combination with Revlimid (lenalidomide) and dexamethasone (Decadron) for the treatment of patients with relapsed or refractory multiple myeloma. Ricolinostat is an oral treatment that belongs to a family of anti-cancer drugs called HDAC inhibitors. Other HDAC inhibitors under investigation for multiple myeloma include Zolinza (vorinostat) and panobinostat. Acetylon believes that ricolinostat could produce fewer side effects than other non-specific HDAC inhibitors, as it selectively inhibits the enzyme HDAC6. The primary aim of the trial is to establish an optimal dose of ricolinostat over a 28-day treatment cycle and to assess the potential anti-myeloma activity of the three-drug combination. In addition, Acetylon is enrolling patients for a Phase 1/2 trial of ricolinostat in combination with Velcade (bortezomib) and dexamethasone in patients with relapsed or refractory myeloma. For more information on both trials, please see the Acetylon press release and the U.S. clinical trial registry.
Lucatumumab Shows Modest Activity As Single Agent In Relapsed/Refractory Myeloma – Results from a recent Phase 1 study indicate that lucatumumab, an antibody developed by Novartis, is well tolerated in relapsed or refractory myeloma patients; however, the compound only showed modest activity in the study participants. Specifically, 4 percent of patients maintained a partial response for a period of eight months or longer, and 43 percent maintained stable disease. The most common severe side effects included anemia (7 percent), chills (7 percent), and fever (7 percent). Side effects severe enough to limit drug dosage were seen in about 10 percent of patients. Based on these results, the researchers recommend that lucatumumab be tested in combination with other anti-myeloma drugs. For more information, please see the study in the British Journal of Hematology (abstract).
Viracept-Velcade Combo Kills Myeloma Cells Better Than Either Drug Alone – Researchers at the National Cancer Institute have found that a combination of the anti-HIV drug Viracept (nelfinavir) and Velcade kills myeloma cells better than either drug alone in a preclinical study. Viracept belongs to a class of drugs called protease inhibitors and was approved by the FDA to treat HIV in 1997. Both Viracept and Velcade limit a cell’s ability to chop up and discard unwanted proteins. Simultaneous treatment with both drugs resulted in an accumulation of such unwanted proteins in the cell, eventually resulting in cell death. For more information, please refer to the study in Cell Death and Disease.
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Viracept Demonstrates Anti-Myeloma Activity – Results of a recent preclinical trial show that Viracept (nelfinavir), alone or in combination with other common myeloma drugs, prevents myeloma cell growth and causes cell death. Viracept is a protease inhibitor and is approved in the United States and Canada for the treatment of HIV. Studies have suggested that protease inhibitors such as Viracept may be effective against cancer. It is thought that they may work similarly to proteasome inhibitors like Velcade (bortezomib), In this preclinical study, Viracept enhanced the anti-cancer activity of myeloma drugs Velcade and dexamethasone (Decadron) as well as the epilepsy drug -- and potential anti-cancer agent -- valproic acid (Depakote, Depakene). Viracept also slowed tumor growth in mice with myeloma. For more information, see the study in Haematologica (pdf).
Study Helps Demonstrate How Green Tea Fights Myeloma – EGCG, an active compound in green tea, has previously been shown to have cancer preventative and cancer fighting properties. However, little was known about the way EGCG works to fight cancer. In this recent preclinical study, Japanese researchers showed that EGCG works by disrupting the outer membrane of myeloma cells, but not healthy cells, thereby selectively killing myeloma cells. For more information, please see the study in Biochemical Journal (pdf). For information about green tea blocking the effectiveness of Velcade, see related Beacon news.
ACY-1215 In Combination With Velcade Shows Potential As Myeloma Treatment – The results of a recent preclinical study show that low doses of ACY-1215 in combination with Velcade kill multiple myeloma cells. ACY-1215, which is being developed by Acetylon Pharmaceuticals, belongs to a class of drugs called HDAC inhibitors. Zolinza (vorinostat) and panobinostat are also HDAC inhibitors that are being studied for the treatment of myeloma. The study showed that ACY-1215 in combination with Velcade slowed tumor growth and extended the overall survival of mice with myeloma. ACY-1215 is currently being studied in a Phase 1/2 clinical trial in combination with Velcade and dexamethasone in patients with relapsed/refractory multiple myeloma. For more information or to enroll in the trial, please see the study in Blood (abstract) and the clinical trial description.
NVP-HSP990 May Be Active Against Myeloma – Results of a recent preclinical study show that NVP-HSP990, alone or in combination with other myeloma treatments, may be effective at treating multiple myeloma. NVP-HSP990, which is being developed by Novartis (NYSE: NVS), is a heat shock protein 90 inhibitor like tanespimycin, which was in Phase 3 trials for myeloma when its development was halted in 2010. The recent study showed that NVP-HSP990 killed myeloma cells in the laboratory, and this activity was significantly enhanced in combination with melphalan (Alkeran). For more information, see the study in Anticancer Research (abstract).
