Karyopharm Announces Updated Selinexor Data in Patients with Treatment-Naïve Myelofibrosis to be Presented at AACR 2023
Karyopharm Therapeutics Inc. (Nasdaq: KPTI) announced that results from its Phase 1 study on selinexor combined with ruxolitinib for treatment-naïve myelofibrosis will be presented at the AACR Annual Meeting 2023. The combination therapy showed potential efficacy, with updates indicating a ≥35% reduction in spleen volume and a ≥50% reduction in symptom scores among 24 patients followed for 24 weeks. Safety data demonstrated the combination was generally well tolerated. An investor webcast is planned to discuss the study results, emphasizing the potential impact of XPO1 inhibition in myelofibrosis treatment.
- Efficacy observed in the Phase 1 study with selinexor and ruxolitinib, showing a ≥35% reduction in spleen volume and a ≥50% reduction in symptom scores.
- Study presented at a prominent conference (AACR Annual Meeting 2023), enhancing visibility and potential investor interest.
- Combination therapy generally well tolerated, indicating possible future clinical viability.
- None.
Previous updates of the Phase 1 study showed that the combination of selinexor and ruxolitinib was generally well tolerated, with improvements in spleen and symptom responses and hemoglobin stabilization. Updated efficacy, including ≥
"We remain highly encouraged by the efficacy and safety observed with selinexor in combination with ruxolitinib in patients with treatment-naïve myelofibrosis and look forward to presenting updated data from this Phase 1 study at AACR 2023. The data underscore the potential importance of XPO1 inhibition in myelofibrosis," said
The Company plans to hold an investor webcast to discuss the updated results from this study.
Details for the AACR abstract
Title: A Phase 1, Open-Label, Dose-Escalation Study of Selinexor Plus Ruxolitinib in Patients with Treatment-Naïve Myelofibrosis
Abstract Presentation Number: CT261
Session Title: Phase I Clinical Trials 2
Session Date and Time:
About XPOVIO® (selinexor)
XPOVIO is a first-in-class, oral exportin 1 (XPO1) inhibitor and the first of Karyopharm's Selective Inhibitor of Nuclear Export (SINE) compounds to be approved for the treatment of cancer. XPOVIO functions by selectively binding to and inhibiting the nuclear export protein XPO1. XPOVIO is approved in the
Please refer to the local Prescribing Information for full details.
Selinexor is also being investigated in several other mid- and late-stage clinical trials across multiple high unmet need cancer indications, including in endometrial cancer and myelofibrosis.
SELECT IMPORTANT SAFETY INFORMATION
Warnings and Precautions
- Thrombocytopenia: Monitor platelet counts throughout treatment. Manage with dose interruption and/or reduction and supportive care.
- Neutropenia: Monitor neutrophil counts throughout treatment. Manage with dose interruption and/or reduction and granulocyte colony–stimulating factors.
- Gastrointestinal Toxicity: Nausea, vomiting, diarrhea, anorexia, and weight loss may occur. Provide antiemetic prophylaxis. Manage with dose interruption and/or reduction, antiemetics, and supportive care.
- Hyponatremia: Monitor serum sodium levels throughout treatment. Correct for concurrent hyperglycemia and high serum paraprotein levels. Manage with dose interruption, reduction, or discontinuation, and supportive care.
- Serious Infection: Monitor for infection and treat promptly.
- Neurological Toxicity: Advise patients to refrain from driving and engaging in hazardous occupations or activities until neurological toxicity resolves. Optimize hydration status and concomitant medications to avoid dizziness or mental status changes.
- Embryo–Fetal Toxicity: Can cause fetal harm. Advise females of reproductive potential and males with a female partner of reproductive potential, of the potential risk to a fetus and use of effective contraception.
- Cataract: Cataracts may develop or progress. Treatment of cataracts usually requires surgical removal of the cataract.
Adverse Reactions
- The most common adverse reactions (≥
20% ) in patients with multiple myeloma who receive XVd are fatigue, nausea, decreased appetite, diarrhea, peripheral neuropathy, upper respiratory tract infection, decreased weight, cataract and vomiting. Grade 3–4 laboratory abnormalities (≥10% ) are thrombocytopenia, lymphopenia, hypophosphatemia, anemia, hyponatremia and neutropenia. In theBOSTON trial, fatal adverse reactions occurred in6% of patients within 30 days of last treatment. Serious adverse reactions occurred in52% of patients. Treatment discontinuation rate due to adverse reactions was19% . - The most common adverse reactions (≥
20% ) in patients with multiple myeloma who receive Xd are thrombocytopenia, fatigue, nausea, anemia, decreased appetite, decreased weight, diarrhea, vomiting, hyponatremia, neutropenia, leukopenia, constipation, dyspnea and upper respiratory tract infection. In the STORM trial, fatal adverse reactions occurred in9% of patients. Serious adverse reactions occurred in58% of patients. Treatment discontinuation rate due to adverse reactions was27% . - The most common adverse reactions (incidence ≥
20% ) in patients with DLBCL, excluding laboratory abnormalities, are fatigue, nausea, diarrhea, appetite decrease, weight decrease, constipation, vomiting, and pyrexia. Grade 3–4 laboratory abnormalities (≥15% ) are thrombocytopenia, lymphopenia, neutropenia, anemia, and hyponatremia. In the SADAL trial, fatal adverse reactions occurred in3.7% of patients within 30 days, and5% of patients within 60 days of last treatment; the most frequent fatal adverse reactions was infection (4.5% of patients). Serious adverse reactions occurred in46% of patients; the most frequent serious adverse reaction was infection (21% of patients). Discontinuation due to adverse reactions occurred in17% of patients.
Use In Specific Populations
Lactation: Advise not to breastfeed.
For additional product information, including full prescribing information, please visit www.XPOVIO.com.
To report SUSPECTED ADVERSE REACTIONS, contact
About
Forward-Looking Statements
This press release contains forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995. Such forward-looking statements include those regarding the ability of selinexor to treat patients with multiple myeloma, endometrial cancer, myelofibrosis, diffuse large B-cell lymphoma, solid tumors and other diseasesand expectations with respect to the clinical development plans and potential regulatory submissions of selinexor. Such statements are subject to numerous important factors, risks and uncertainties, many of which are beyond Karyopharm's control, that may cause actual events or results to differ materially from Karyopharm's current expectations. For example, there can be no guarantee that Karyopharm will successfully commercialize XPOVIO or that any of Karyopharm's drug candidates, including selinexor and eltanexor, will successfully complete necessary clinical development phases or that development of any of Karyopharm's drug candidates will continue. Further, there can be no guarantee that any positive developments in the development or commercialization of Karyopharm's drug candidate portfolio will result in stock price appreciation. Management's expectations and, therefore, any forward-looking statements in this press release could also be affected by risks and uncertainties relating to a number of other factors, including the following: the risk that the COVID-19 pandemic could disrupt Karyopharm's business more severely than it currently anticipates, including by negatively impacting sales of XPOVIO, interrupting or delaying research and development efforts, impacting the ability to procure sufficient supply for the development and commercialization of selinexor or other product candidates, delaying ongoing or planned clinical trials, impeding the execution of business plans, planned regulatory milestones and timelines, or inconveniencing patients; the adoption of XPOVIO in the commercial marketplace, the timing and costs involved in commercializing XPOVIO or any of Karyopharm's drug candidates that receive regulatory approval; the ability to obtain and retain regulatory approval of XPOVIO or any of Karyopharm's drug candidates that receive regulatory approval; Karyopharm's results of clinical trials and preclinical studies, including subsequent analysis of existing data and new data received from ongoing and future studies; the content and timing of decisions made by the
XPOVIO® and NEXPOVIO® are registered trademarks of
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FAQ
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