Selinexor and Backbone Treatments of Multiple Myeloma Patients
STOMP
A Phase 1b/2 Study of Selinexor (KPT-330) in Combination With Backbone Treatments for Relapsed/Refractory Multiple Myeloma and Newly Diagnosed Multiple Myeloma
1 other identifier
interventional
300
2 countries
24
Brief Summary
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).
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_1 multiple-myeloma
Started Oct 2015
Longer than P75 for phase_1 multiple-myeloma
24 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
January 13, 2015
CompletedFirst Posted
Study publicly available on registry
January 21, 2015
CompletedStudy Start
First participant enrolled
October 1, 2015
CompletedPrimary Completion
Last participant's last visit for primary outcome
April 1, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
April 1, 2027
May 4, 2026
April 1, 2026
11.5 years
January 13, 2015
April 28, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (8)
Phase 1 (Dose-escalation): Maximum Tolerated Dose (MTD)
MTD for once weekly and twice weekly selinexor dose cohorts in the 11 Arms will be evaluated.
12 months
Phase 1 (Dose-escalation): Recommended Phase-2 dose (RP2D)
RP2D for each Arm will be determined.
12 months
Phase 1 (Dose-escalation): Maximum Plasma Concentration (Cmax) of Selinexor
Cmax of selinexor over a dosing interval when given with and without clarithromycin.
Pre-dose, 1 hour, 1.5, 2, 3, 4, 5, 6, 8, and 24 hours post-dose on Day 1 (without clarithromycin) and Day 8 (with clarithromycin)
Phase 1 (Dose-escalation): Area Under the Concentration-time Curve From Time Zero to the Last Non-zero Concentration (AUC0-t) of Selinexor
Total exposure of selinexor in the blood (AUC0-last) from the time of dosing to the last measurable concentration collected when given with and without clarithromycin.
Pre-dose, 1, 1.5, 2, 3, 4, 5, 6, 8, and 24 hours post-dose on Day 1 (without clarithromycin) and Day 8 (with clarithromycin)
Phase 1 (Dose-escalation): Area Under the Concentration-time Curve From Time Zero to Infinity (Extrapolated) (AUC0-inf)
Pre-dose, 1, 1.5, 2, 3, 4, 5, 6, 8, and 24 hours post-dose on Day 1 (without clarithromycin) and Day 8 (with clarithromycin)
Phase 2 (Expansion): Overall response rate (ORR)
ORR for each Arm independently. ORR to include stringent complete response (sCR), complete response (CR), very good partial response (VGPR), and partial response (PR), according to the International Myeloma Working Group (IMWG) criteria.
12 months
Phase 2 (Expansion): Duration of response (DOR)
Duration of response for each Arm. DOR is defined as the number of days from the date of the first evidence of objective response until progression.
12 months
Phase 2 (Expansion): Clinical Benefit Rate (CBR)
CBR is defined the point estimate of the percentage of patients in that arm who have a response of sCR, CR, VGPR, PR or Minimal response (MR), as assessed by IMWG criteria.
12 months
Study Arms (12)
1: Selinexor, Low-dose Dexamethasone and Pomalidomide (SPd)
EXPERIMENTALEach 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.
2: Selinexor, Low-dose Dexamethasone and Bortezomib (SVd)
EXPERIMENTALEach 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.
3: Selinexor, Low-dose DEX, and Lenalidomide (SRd) in RRMM
EXPERIMENTALEach 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.
4:Selinexor, Low-dose dexamethasone, Pomalidomide, Velcade (SPVd)
EXPERIMENTALPK 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.
5: Selinexor, Low-dose dexamethasone, and Daratumumab (SDd)
EXPERIMENTALEach 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.
6: Selinexor, Low-dose dexamethasone, and Carfilzomib (SKd)
EXPERIMENTALPK 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.
7: Selinexor, Low-dose DEX and Lenalidomide (SRd) in NDMM
EXPERIMENTALEach 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.
8: Selinexor, Low-dose dexamethasone, and Ixazomib (SNd)
EXPERIMENTALPK 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.
9: Selinexor, Low-dose DEX, Pomalidomide and Elotuzumab (SPEd)
EXPERIMENTALPK 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.
10. Selinexor, Dexamethasone, and Belantamab Mafodotin (SBd)
EXPERIMENTALEach 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.
11. Selinexor, Dexamethasone, Pomalidomide, and Daratumumab (SDPd)
EXPERIMENTALEach 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.
12. Selinexor + dexamethasone + mezigdomide (SMd)
EXPERIMENTALThe 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.
Interventions
Oral tablets
Oral tablets
Oral capsule
Oral tablets
Subcutaneous Injection (single use vial)
Intravenous Infusion
Intravenous infusion
Oral capsule
Intravenous infusion
Tablets
Intravenous infusion
Oral Capsules
Eligibility Criteria
You may qualify if:
- Written informed consent signed in accordance with federal, local, and institutional guidelines.
- Age greater than or equal to (≥) 18 years at the time of informed consent.
- Histologically confirmed diagnosis with measurable disease for relapsed/refractory myeloma.
- Symptomatic MM, based on IMWG guidelines.
- Patients must have measurable disease as defined by at least one of the following:
- Serum M-protein ≥ 0.5 gram per deciliter (g/dL) by serum protein electrophoresis (SPEP) or, for immunoglobulin A (IgA) myeloma, by quantitative IgA
- Urinary M-protein excretion at least 200 mg/24 hours
- Serum free light chain (FLC) ≥ 100 milligram per liter (mg/L), provided that FLC ratio is abnormal
- If SPEP is felt to be unreliable for routine M-protein measurement (example, for IgA MM), then quantitative immunoglobulin (Ig) levels by nephelometry or turbidometry are acceptable
- Eastern Cooperative Oncology Group (ECOG) Performance Status of ≤ 2.
- Adequate hepatic function within 28 days prior to C1D1:
- For SPd, SRd, and SPEd: Total bilirubin \< 2\* upper limit of normal (ULN) (except patients with Gilbert's syndrome \[hereditary indirect hyperbilirubinemia\] who must have a total bilirubin of ≤ 3\* ULN) and both aspartate aminotransferase (AST) and alanine aminotransferase (ALT) \< 2.5\* ULN
- For SVd, SPVd, SDd, SNd, SBd and SDPd: Total bilirubin of \< 1.5\* ULN (except patients with Gilbert's syndrome \[hereditary indirect hyperbilirubinemia\] who must have a total bilirubin of ≤ 3\* ULN) and both AST and ALT \< 2.0\* ULN
- For SKd and SMd: Total bilirubin \< 2x ULN (except patients with Gilbert's syndrome \[hereditary indirect hyperbilirubinemia\] who must have a total bilirubin of ≤ 3x ULN) and both AST and ALT \< 3.0x ULN
- Adequate renal function within 28 days prior to C1D1. For Arms 1-11, estimated creatinine clearance (CrCl) calculated using the formula of Cockroft and Gault (1976).
- +39 more criteria
You may not qualify if:
- Smoldering MM.
- MM that does not express M-protein or FLC (i.e., non-secretory MM is excluded), and quantitative immunoglobulin levels cannot be used instead.
- Documented active systemic amyloid light chain amyloidosis.
- Active plasma cell leukemia.
- Red Blood Cell (RBC) and platelet transfusions and blood growth factors within 14 days of C1D1 (Arms 1-11 only). Red blood cells and platelet transfusions and blood growth factors within 7 days of C1D1 (Arm 12).
- Platelet transfusion or G-CSF within 7 days or pegfilgastrim within 14 days prior to the complete blood count (CBC) used to determine eligibility.
- Radiation, chemotherapy, or immunotherapy or any other tumor-directed therapy ≤ 2 weeks prior to C1D1, and radio-immunotherapy within 6 weeks prior to C1D1. Patients on long-term glucocorticoids during Screening do not require a washout period. Spot radiation is permitted at any time for treatment of fractures or to prevent fractures as well as for pain management.
- Patients with history of spinal cord compression with residual paraplegia (Dose Escalation Phase only).
- Treatment with an investigational anti-cancer therapy within 3 weeks prior to C1D1.
- Prior autologous stem cell transplantation \< 1 month, or allogeneic stem cell transplantation \< 3 months prior to C1D1.
- Active graft versus host disease after allogeneic stem cell transplantation.
- Life expectancy \< 3 months.
- Major surgery within 4 weeks prior to C1D1.
- Active, unstable cardiovascular function:
- Symptomatic ischemia, or
- +28 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Karyopharm Therapeutics Inclead
- Bristol-Myers Squibbcollaborator
Study Sites (24)
Banner MD Anderson Cancer Center
Gilbert, Arizona, 85234, United States
Jonnsson Comprehensive Cancer Center / University of Los Angeles
Los Angeles, California, 0095, United States
Massachusetts General Hospital
Boston, Massachusetts, 02114, United States
Dana Farber Cancer Institute
Boston, Massachusetts, 02215, United States
University of Nebraska Medical Center
Omaha, Nebraska, 68198, United States
Hackensack University Medical Center - John Theurer Cancer Center
Hackensack, New Jersey, 07601, United States
Columbia University
New York, New York, 10032, United States
Weill Cornell Medicine
New York, New York, 10065, United States
Wilmot Cancer Center/ University of Rochester
Rochester, New York, United States
University of North Carolina - Chapel Hill Comprehensive Cancer Center
Chapel Hill, North Carolina, 27599, United States
Duke Institute of Cancer/ Duke University
Durham, North Carolina, 27710, United States
Sarah Cannon- Tennessee Oncology Nashville
Nashville, Tennessee, 37203, United States
Fred Hutch Cancer Center
Seattle, Washington, 98109, United States
Swedish Cancer Institute
Seattle, Washington, 98109, United States
University of Wisconsin School of Medicine and Public Health
Madison, Wisconsin, 53792, United States
Tom Baker Cancer Center/Alberta Health Services
Calgary, Alberta, T2N 4Z6, Canada
Cross Cancer Institute / University of Alberta
Edmonton, Alberta, T6G 1Z2, Canada
Vancouver General Hospital
Vancouver, British Columbia, V5Z 1M9, Canada
Cancer Care Manitoba
Winnipeg, Manitoba, R3E 0V9, Canada
Memorial Hospital of Newfoundland
St. John's, Newfoundland and Labrador, A1B 3V6, Canada
Queen Elizabeth II Health Sciences Center
Halifax, Nova Scotia, B3H 2Y9, Canada
Princess Margaret Cancer Centre
Toronto, Ontario, M5G 2M9, Canada
Maisonneuve-Rosemont Hospital
Montreal, Quebec, H1T 2M4, Canada
Royal Victoria Hospital / McGill University
Montreal, Quebec, H3A 1A1, Canada
Related Publications (3)
White D, Schiller GJ, Madan S, Lentzsch S, Chubar E, Lavi N, Van Domelen DR, Bentur OS, Baljevic M. Efficacy and safety of once weekly selinexor 40 mg versus 60 mg with pomalidomide and dexamethasone in relapsed and/or refractory multiple myeloma. Front Oncol. 2024 May 17;14:1352281. doi: 10.3389/fonc.2024.1352281. eCollection 2024.
PMID: 38826786DERIVEDSchiller GJ, Lipe BC, Bahlis NJ, Tuchman SA, Bensinger WI, Sutherland HJ, Lentzsch S, Baljevic M, White D, Kotb R, Chen CI, Rossi A, Biran N, LeBlanc R, Grosicki S, Martelli M, Gunsilius E, Spicka I, Stevens DA, Facon T, Mesa MG, Zhang C, Van Domelen DR, Bentur OS, Gasparetto C. Selinexor-Based Triplet Regimens in Patients With Multiple Myeloma Previously Treated With Anti-CD38 Monoclonal Antibodies. Clin Lymphoma Myeloma Leuk. 2023 Sep;23(9):e286-e296.e4. doi: 10.1016/j.clml.2023.06.001. Epub 2023 Jun 5.
PMID: 37393120DERIVEDBahlis NJ, Sutherland H, White D, Sebag M, Lentzsch S, Kotb R, Venner CP, Gasparetto C, Del Col A, Neri P, Reece D, Kauffman M, Shacham S, Unger TJ, Jeha J, Saint-Martin JR, Shah J, Chen C. Selinexor plus low-dose bortezomib and dexamethasone for patients with relapsed or refractory multiple myeloma. Blood. 2018 Dec 13;132(24):2546-2554. doi: 10.1182/blood-2018-06-858852. Epub 2018 Oct 23.
PMID: 30352784DERIVED
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Design
- Study Type
- interventional
- Phase
- phase 1
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
January 13, 2015
First Posted
January 21, 2015
Study Start
October 1, 2015
Primary Completion (Estimated)
April 1, 2027
Study Completion (Estimated)
April 1, 2027
Last Updated
May 4, 2026
Record last verified: 2026-04