300 Participants Needed

Combination Therapies with Selinexor for Multiple Myeloma

(STOMP Trial)

Recruiting at 14 trial locations
MK
SS
ES
KM
Overseen ByKaryopharm Medical Information
Age: 18+
Sex: Any
Trial Phase: Phase 1 & 2
Sponsor: Karyopharm Therapeutics Inc
No Placebo GroupAll trial participants will receive the active study treatment (no placebo)

Trial Summary

What is the purpose of this trial?

This study will independently assess the efficacy and safety of 11 combination therapies in 12 arms, in dose-escalation/-evaluation and expansion phases, for the treatment of patients with relapsed/refractory multiple myeloma (RRMM) and newly diagnosed multiple myeloma (NDMM). The combinations to be evaluated are: * Arm 1: Selinexor + dexamethasone + pomalidomide (SPd); enrollment complete * Arm 2: Selinexor + dexamethasone + bortezomib (SVd); enrollment complete * Arm 3: Selinexor + dexamethasone + lenalidomide (SRd) in RRMM; enrollment complete * Arm 4: Selinexor + dexamethasone + pomalidomide + bortezomib (SPVd); enrollment complete * Arm 5: Selinexor + dexamethasone + daratumumab (SDd); enrollment complete * Arm 6: Selinexor + dexamethasone + carfilzomib (SKd); enrollment complete * Arm 7: Selinexor + dexamethasone + lenalidomide (SRd) in NDMM; enrollment complete * Arm 8: Selinexor + dexamethasone + ixazomib (SNd); enrollment complete * Arm 9: Selinexor + dexamethasone + pomalidomide + elotuzumab (SPEd); enrollment complete * Arm 10: Selinexor + dexamethasone + belantamab mafodotin (SBd); enrollment complete * Arm 11: Selinexor + dexamethasone + pomalidomide + daratumumab (SDPd); enrollment complete * Arm 12: Selinexor + dexamethasone + mezigdomide (SMd); actively recruiting Selinexor pharmacokinetics: * PK Run-in (Days 1-14): Starting in protocol version 8.0, patients enrolled to any arm in the Dose Escalation Phase (i.e., Arm 4 \[SPVd\], Arm 6 \[SKd\], Arm 8 \[SNd\], Arm 9 \[SPEd\], Arm 10 \[SBd\], and Arm 11 \[SDPd\]) will also first be enrolled to a pharmacokinetics (PK) Run-in period until 9 patients have been enrolled to this period to evaluate the PK of selinexor before and after co-administration with a strong CYP3A4 inhibitor. This run-in period does not apply to Arm 12 (SMd).

Will I have to stop taking my current medications?

The trial protocol does not specify if you need to stop taking your current medications. However, if you are taking strong CYP3A4 inhibitors or inducers, you may need to stop them before participating in the PK Run-in period for certain trial arms.

What data supports the effectiveness of the drug Selinexor for treating multiple myeloma?

Selinexor, when combined with dexamethasone, has shown encouraging effectiveness in treating multiple myeloma, especially in patients who have already tried other treatments. In a study, the combination of Selinexor with bortezomib and dexamethasone resulted in a 63% overall response rate, indicating it can be effective even for those with resistant forms of the disease.12345

What safety data exists for Selinexor and Belantamab Mafodotin in treating multiple myeloma?

Belantamab Mafodotin has been associated with eye-related side effects, such as keratopathy (eye damage) and changes in vision, which can lead to treatment discontinuation. Selinexor's common side effects include low blood platelet counts (thrombocytopenia), low sodium levels (hyponatremia), and other blood-related issues. Both drugs require careful monitoring and may need dose adjustments if side effects become severe.678910

What makes the drug combination therapy with Selinexor unique for treating multiple myeloma?

The combination therapy with Selinexor is unique because it includes a first-in-class drug that inhibits exportin-1, enhancing the effectiveness of proteasome inhibitors like bortezomib and carfilzomib. This regimen has shown to prolong progression-free survival with a manageable safety profile and lower incidence of peripheral neuropathy compared to standard treatments.25111213

Research Team

MK

Michael Kauffman, MD, Ph.D

Principal Investigator

Karyopharm Therapeutics Inc

Eligibility Criteria

Adults over 18 with symptomatic multiple myeloma, either newly diagnosed or relapsed/refractory, can join. They must have measurable disease and be in good enough health to swallow pills and handle treatment side effects. Pregnant women, those with severe liver/kidney issues, recent major surgery patients, or individuals with certain infections or heart problems cannot participate.

Inclusion Criteria

Written informed consent signed in accordance with federal, local, and institutional guidelines
I am 18 years old or older.
My liver is functioning well, as tested within the last 28 days.
See 19 more

Exclusion Criteria

I have been diagnosed with active systemic light chain amyloidosis.
I haven't had blood transfusions or growth factors in the last 14 days.
My multiple myeloma does not produce M-protein or light chains.
See 21 more

Timeline

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

PK Run-in

Selinexor pharmacokinetics run-in period to evaluate PK before and after co-administration with a strong CYP3A4 inhibitor

2 weeks
Multiple blood sample collections on Days 1 and 8

Dose-Escalation

Patients undergo dose-escalation to determine the maximum tolerated dose and recommended phase-2 dose

12 months
Regular visits for dosing and monitoring

Expansion

Phase 2 expansion to assess efficacy and safety of combination therapies

12 months

Follow-up

Participants are monitored for safety and effectiveness after treatment

4 weeks

Treatment Details

Interventions

  • Belantamab Mafodotin
  • Bortezomib
  • Carfilzomib
  • Daratumumab
  • Dexamethasone
  • Elotuzumab
  • Ixazomib
  • Lenalidomide
  • Pomalidomide
  • Selinexor
Trial OverviewThe trial is testing Selinexor combined with other drugs like dexamethasone and chemotherapy agents in different mixtures across 11 groups for treating multiple myeloma. Some groups are closed to new participants. The study includes initial phases to determine safe dosages followed by expansions to assess effectiveness.
Participant Groups
12Treatment groups
Experimental Treatment
Group I: 9: Selinexor, Low-dose DEX, Pomalidomide and Elotuzumab (SPEd)Experimental Treatment4 Interventions
PK Run-in Period: Selinexor and Clarithromycin: * For the first 9 patients enrolled into this dose escalation arm * 14 day run-in period after which patient will proceed to Dose-Escalation Phase C1D1 Selinexor 40 mg will be dosed on Days 1 and 8. Clarithromycin 500 mg will be dosed twice daily on Days 2-8. PK samples will be collected on Days 1 and 8 at 1, 1.5, 2, 3, 4, 5, 6, 8, and 24 hours post dose. Dose-Escalation Phase: * All patients enrolled into this Arm * Each cycle is of 28 days Cohort 9.1: SEL 20/40/60 mg PO once weekly; DEX 28/20 mg PO twice weekly; POM 4 mg PO QD Days 1-21; Elotuzumab (ELO) 10/20 mg/kg IV will be given once weekly on Days 1,8, 15 and 22 of Cycles 1-2. Starting on Cycle 3 and continuing for future cycles, elotuzumab will be dosed at 20 mg/kg on Day 1 of each cycle only. Cohort 9.3: Selinexor, Dexamethasone, Pomalidomide and Elotuzumab will be dosed at RP2D-9.
Group II: 8: Selinexor, Low-dose dexamethasone, and Ixazomib (SNd)Experimental Treatment4 Interventions
PK Run-in Period: Selinexor \& Clarithromycin: * For the first 9 patients enrolled into this dose escalation arm * 14 day run-in period after which patient will proceed to Dose-Escalation Phase C1D1 Selinexor 40 mg will be dosed on Days 1 and 8. Clarithromycin 500 mg will be dosed twice daily on Days 2-8. PK samples will be collected on Days 1 and 8 at 1, 1.5, 2, 3, 4, 5, 6, 8, and 24 hours post dose. Dose-Escalation Phase: * All patients enrolled into this Arm * Each cycle is of 28 days Cohort 8.1: SEL 40/60/80/100 mg PO once weekly; DEX 20 mg PO twice weekly; IXA 3/4 mg PO once weekly. Cohort 8.3: Selinexor, Dexamethasone and Ixazomib will be dosed at RP2D-8.
Group III: 7: Selinexor, Low-dose DEX and Lenalidomide (SRd) in NDMMExperimental Treatment3 Interventions
Each cycle is of 28 days Cohort 7.1: SEL 40/60/80 mg PO once weekly; DEX 40 mg PO once weekly; LEN 25 mg PO Days 1-21. Cohort 7.3: Selinexor, Dexamethasone and Lenalidomide will be dosed at RP2D-7.
Group IV: 6: Selinexor, Low-dose dexamethasone, and Carfilzomib (SKd)Experimental Treatment4 Interventions
PK Run-in Period: Selinexor and Clarithromycin: * For the first 9 patients enrolled into this dose escalation arm * 14 day run-in period after which patient will proceed to Dose-Escalation Phase C1D1 Selinexor 40 mg will be dosed on Days 1 and 8. Clarithromycin 500 mg will be dosed twice daily on Days 2-8. PK samples will be collected on Days 1 and 8 at 1, 1.5, 2, 3, 4, 5, 6, 8, and 24 hours post dose. Dose-Escalation Phase: * All patients enrolled into this Arm * Each cycle is of 28 days Cohort 6.1: SEL 40/60/80/100 mg PO once weekly on days 1, 8, 15, and 22; DEX 40 mg IV or PO once weekly; Carfilzomib (CAR) 56 or 70 mg/m\^2 IV infusion once weekly on days 1, 8, and 15. Cohort 6.2: SEL 60/80/100 mg PO once weekly on days 1, 8, and 15; DEX 40 mg IV or PO once weekly; CAR 56 or 70 mg/m\^2 IV infusion once weekly on days 1, 8, and 15. Cohort 6.3: Selinexor, Dexamethasone and Carfilzomib will be dosed at RP2D-6.
Group V: 5: Selinexor, Low-dose dexamethasone, and Daratumumab (SDd)Experimental Treatment3 Interventions
Each cycle is of 28 days Cohort 5.1: SEL 80/100 mg PO once weekly; DEX 40 mg once weekly (IV or PO); DARA: 16 mg/kg IV infusion Cycle 1-2: Once weekly, Cycle 3-6: Every other week, Cycle 6 and greater: Once a month. Cohort 5.2: SEL: 60 mg PO twice weekly; DEX: 40 mg weekly (IV or PO); DARA: 16 milligram per kilogram (mg/kg) IV infusion Cycle 1-2: Once. weekly, Cycle 3-6: Every other week, Cycle 6 and greater: Once a month. Cohort 5.3: Selinexor, Dexamethasone and Daratumumab will be dosed at RP2D-5.
Group VI: 4:Selinexor, Low-dose dexamethasone, Pomalidomide, Velcade (SPVd)Experimental Treatment5 Interventions
PK Run-in Period: Selinexor and Clarithromycin: * For the first 9 patients enrolled into this dose escalation arm * 14 day run-in period after which patients will proceed to Dose-Escalation Phase C1D1 Selinexor 40 mg will be dosed on Days 1 and 8. Clarithromycin 500 mg will be dosed twice daily on Days 2-8. PK samples will be collected on Days 1 and 8 at 1, 1.5, 2, 3, 4, 5, 6, 8, and 24 hours post dose. Dose-escalation Phase: * All patients enrolled into this Arm * Each cycle is of 28 days. Cohort 4.1: SEL 40/60 mg PO once weekly; DEX 40 mg PO once weekly; POM 4 mg PO Days 1-21; BOR 1.3 mg/m\^2 subcutaneous (SC) once weekly. Cohort 4.3: Selinexor, Dexamethasone, Pomalidomide, Velcade (Bortezomib) will be dosed at RP2D-4.
Group VII: 3: Selinexor, Low-dose DEX, and Lenalidomide (SRd) in RRMMExperimental Treatment3 Interventions
Each cycle is of 28 days Cohort 3.1: SEL 40/60/80/100 mg PO once weekly; DEX 40 mg PO once weekly; Lenalidomide (LEN) 15/25 mg PO Days 1-21. Cohort 3.2: SEL 40/60/80 mg PO twice weekly; DEX 20 mg PO twice weekly; LEN 15/25 mg PO Days 1-21. Cohort 3.3: Selinexor, Dexamethasone and Lenalidomide will be dosed at RP2D-3.
Group VIII: 2: Selinexor, Low-dose Dexamethasone and Bortezomib (SVd)Experimental Treatment3 Interventions
Each cycle is of 35 days Cohort 2.1: SEL 60/80/100 mg PO once weekly; DEX 40 mg PO once weekly; Bortezomib (BOR) 1.3 milligram per meter square (mg/m\^2) subcutaneous (SC) once weekly. Cohort 2.2: SEL 40/60/80 mg PO twice weekly; DEX 20 mg PO twice weekly; BOR 1.3 mg/m\^2 subcutaneous (SC) once weekly. Cohort 2.3: Selinexor, Dexamethasone and Bortezomib will be dosed at RP2D-2.
Group IX: 1: Selinexor, Low-dose Dexamethasone and Pomalidomide (SPd)Experimental Treatment3 Interventions
Each cycle is of 28 days Cohort 1.1: Selinexor (SEL) 60/80/100 mg orally (PO) once weekly (QW); Dexamethasone (DEX) 40 mg PO once weekly; Pomalidomide (POM) 2/3/4 mg PO Days 1-21. Cohort 1.2: SEL 40/60/80 mg PO twice weekly (BIW); DEX 20 mg PO twice weekly; POM 3/4 mg PO Days 1-21. Cohort 1.3: Selinexor, Dexamethasone and Pomalidomide will be dosed at RP2D-1. Cohort 1.4: SEL 40 mg PO QW; DEX 40 mg PO QW; POM 4mg PO once daily (QD) Days 1-21.
Group X: 12. Selinexor + dexamethasone + mezigdomide (SMd)Experimental Treatment3 Interventions
The dose of selinexor will be formally escalated from 40 mg QW to 60 mg QW in combination with mezigdomide 0.6 mg daily. Mezigdomide dosing may be de-escalated as per 3+3 criteria to 0.3 mg or escalated to 1.0 mg. The dose level that passes DLT evaluation will be considered the MTD for the cohort.
Group XI: 11. Selinexor, Dexamethasone, Pomalidomide, and Daratumumab (SDPd)Experimental Treatment4 Interventions
Each Cycle is of 28 days Cohort 11.1 SEL 40/60 mg PO once weekly on Days 1, 8, and 15; DEX total 40 mg weekly (IV or PO) single or divided doses on Days 1, 8, 15, and 22; POM 4 mg PO QW Days 1-21; DARA 16 mg/kg IV or SC QW on Days 1, 8, 15 and 22 of Cycles 1-2 and on Days 1 and 15 of Cycles 3-6, Day 1 of every Cycle greater than (\>6). Cohort 11.3 Selinexor, Dexamethasone, Pomalidomide, and Daratumumab will be dosed at RP2D-11.
Group XII: 10. Selinexor, Dexamethasone, and Belantamab Mafodotin (SBd)Experimental Treatment3 Interventions
Each cycle is of 21 days Cohort 10.1: SEL 40/60/80 mg PO once weekly on Days 1, 8, and 15; DEX 40 mg PO QW on Days 1, 8, and 15; Belantamab Mafodotin (BEL) 2.5 mg/kg IV infusion every 3 weeks (Q3W) Day 1 of each cycle. Cohort 10.3: Selinexor, Dexamethasone, and Belantamab Mafodotin will be dosed at RP2D-10.

Belantamab Mafodotin is already approved in European Union, United States for the following indications:

🇪🇺
Approved in European Union as Blenrep for:
  • Relapsed or refractory multiple myeloma
🇺🇸
Approved in United States as Blenrep for:
  • Relapsed or refractory multiple myeloma

Find a Clinic Near You

Who Is Running the Clinical Trial?

Karyopharm Therapeutics Inc

Lead Sponsor

Trials
89
Recruited
7,200+

Richard Paulson

Karyopharm Therapeutics Inc

Chief Executive Officer since 2021

MBA from the University of Toronto's Rotman School of Management

Reshma Rangwala

Karyopharm Therapeutics Inc

Chief Medical Officer since 2023

MD, PhD

Bristol-Myers Squibb

Industry Sponsor

Trials
2,731
Recruited
4,127,000+
Headquarters
New York City, USA
Known For
Oncology & Cardiovascular
Top Products
Eliquis, Opdivo, Revlimid, Orencia
Christopher Boerner profile image

Christopher Boerner

Bristol-Myers Squibb

Chief Executive Officer since 2023

PhD in Business Administration from the Haas School of Business, University of California, Berkeley; BA in Economics and History from Washington University in St. Louis

Deepak L. Bhatt profile image

Deepak L. Bhatt

Bristol-Myers Squibb

Chief Medical Officer since 2024

MD from Yale University; MSc in Clinical Epidemiology from the University of Pennsylvania

Findings from Research

Selinexor is a first-in-class oral medication that works by inhibiting nuclear export, leading to the retention of oncogene mRNAs and reactivation of tumor suppressor proteins, which triggers cell death in multiple myeloma (MM) cells.
In clinical studies, selinexor has shown manageable side effects and promising effectiveness in treating relapsed and refractory MM, indicating its potential to improve outcomes for patients with limited treatment options.
Selinexor for the treatment of patients with previously treated multiple myeloma.Mo, CC., Jagannath, S., Chari, A., et al.[2022]
Selinexor, when combined with low-dose bortezomib and dexamethasone, showed a 63% overall response rate in treating relapsed or refractory multiple myeloma, with particularly high efficacy in patients not previously resistant to proteasome inhibitors (84% response rate).
The treatment was generally well-tolerated, with the most common severe side effects being thrombocytopenia (45%) and neutropenia (24%), while the recommended phase 2 dose was established as selinexor 100 mg once weekly, bortezomib 1.3 mg/m2 once weekly, and dexamethasone 40 mg once weekly.
Selinexor plus low-dose bortezomib and dexamethasone for patients with relapsed or refractory multiple myeloma.Bahlis, NJ., Sutherland, H., White, D., et al.[2021]
Selinexor, a first-in-class oral medication that inhibits the nuclear export protein XPO-1, has been granted accelerated FDA approval for treating patients with penta-refractory multiple myeloma, showing promise in a challenging patient population.
Clinical data indicates that selinexor, particularly in combination with dexamethasone, represents a significant advancement in treatment options for heavily pretreated multiple myeloma patients, with ongoing studies exploring its use in earlier treatment lines.
Selinexor for the treatment of multiple myeloma.Podar, K., Shah, J., Chari, A., et al.[2023]

References

Selinexor for the treatment of patients with previously treated multiple myeloma. [2022]
Selinexor plus low-dose bortezomib and dexamethasone for patients with relapsed or refractory multiple myeloma. [2021]
Selinexor for the treatment of multiple myeloma. [2023]
Selinexor therapy for multiple myeloma and non-Hodgkin lymphomas. [2023]
Real World Efficacy and Toxicity of Selinexor: Importance of Patient Characteristics, Dose Intensity and Post Progression Outcomes. [2023]
Belantamab Mafodotin in Patients with Relapsed/Refractory Multiple Myeloma: Results of the Compassionate Use or the Expanded Access Program in Spain. [2023]
FDA Approval Summary: Belantamab Mafodotin for Patients with Relapsed or Refractory Multiple Myeloma. [2023]
Corneal Epithelial Findings in Patients with Multiple Myeloma Treated with Antibody-Drug Conjugate Belantamab Mafodotin in the Pivotal, Randomized, DREAMM-2 Study. [2020]
Efficacy and safety of belantamab-mafodotin in triple-refractory multiple myeloma patients: A multicentric real-life experience. [2022]
Profile and Management of Toxicity of Selinexor and Belantamab Mafodotin for the Treatment of Triple Class Refractory Multiple Myeloma. [2021]
Selinexor-Bortezomib-Dexamethasone: A Review in Previously Treated Multiple Myeloma. [2023]
Phase 1 study of selinexor plus carfilzomib and dexamethasone for the treatment of relapsed/refractory multiple myeloma. [2023]
Once weekly selinexor, carfilzomib and dexamethasone in carfilzomib non-refractory multiple myeloma patients. [2022]