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Study of the Safety, Tolerability and Efficacy of KPT-8602 in Participants with Relapsed/Refractory Cancer Indications

Phase 1
Completed
Conditions
Relapsed/Refractory Multiple Myeloma (RRMM)
Metastatic Colorectal Cancer (mCRC)
Metastatic Castration-Resistant Prostate Cancer (mCRPC)
Higher-Risk Myelodysplastic Syndrome (HR-MDS)
Newly Diagnosed Intermediate/High-Risk MDS
Acute Myeloid Leukemia (AML)
Interventions
Registration Number
NCT02649790
Lead Sponsor
Karyopharm Therapeutics Inc
Brief Summary

This is a first-in-human, multi-center, open-label clinical study with separate dose escalation (Phase 1) and expansion (Phase 2) stages to assess preliminary safety, tolerability, and efficacy of the second generation oral XPO1 inhibitor KPT-8602 in participants with relapsed/refractory multiple myeloma (MM), metastatic colorectal cancer (mCRC), metastatic castration resistant prostate cancer (mCRPC), higher risk myelodysplastic syndrome (HRMDS), acute myeloid leukemia (AML) and newly diagnosed intermediate/high-risk MDS.

Dose escalation and dose expansion may be included for all parts of the study as determined by ongoing study results.

Detailed Description

Not available

Recruitment & Eligibility

Status
COMPLETED
Sex
All
Target Recruitment
277
Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

Study Type
INTERVENTIONAL
Study Design
SEQUENTIAL
Arm && Interventions
GroupInterventionDescription
Part C: CRC- KPT-8602 single agentKPT-8602Participants were treated with KPT-8602 at a dose and schedule that has been cleared in Part A (completed).
Part B: RRMM- KPT-8602 with low-dose dexamethasone; QDx5/weekKPT-8602Participants received KPT-8602 for 5 consecutive days (QDx5/week) in combination with low dose dexamethasone (20 milligram \[mg\] on Days 1, 3, 8, 10, 15, 17, 22, and 24 of each 28-day cycle) (completed).
Part D: mCRPC- KPT-8602 single agentKPT-8602Participants were treated with KPT-8602 at a dose and schedule that has been cleared in Part A (completed).
Part E: mCRPC- KPT-8602 with abiraterone and corticosteroidsKPT-8602Participants were treated with KPT-8602 at a dose and schedule that had been cleared in Part A in combination with abiraterone and corticosteroids. Participants continued to receive the dose and schedule of abiraterone and corticosteroids that they were receiving at the time of enrollment (completed).
Part G: Newly Diagnosed Intermediate/High-Risk MDS -KPT-8602 with ASTX727ASTX727Participants will receive KPT-8602 once daily at escalated doses. The starting dose for KPT-8602 is 5 mg orally once daily from Day 8 to Day 28 (Weeks 2 to 4) on a 28-day cycle in combination with ASTX727.
Part H: AML Maintenance Therapy- KPT-8602 single agentKPT-8602Participants with high-risk acute myeloid leukemia (AML) prior to transplant will be enrolled to receive maintenance therapy with KPT-8602 post-allogeneic stem cell transplantation. The dose for KPT-8602 will be 10 mg (RP2D from Part F) oral, to be administered once daily from Day 1 to Day 21 (Weeks 1 to 3) on a 28-day cycle.
Part A1: RRMM- KPT-8602 single agent; QoDx5/weekKPT-8602Participants received KPT-8602 once daily for 5 days per week (QDx5/week) at escalated doses (completed).
Part A2: RRMM- KPT-8602 single agent; QoDx3/weekKPT-8602Participants received KPT-8602 once daily for 3 days per week (QoDx3/week). The starting dose for Part A2 will be informed by Part A1 (completed).
Part F: High-risk Myelodysplastic Syndrome (MDS)- KPT-8602 single agentKPT-8602Participants were treated with KPT-8602 at a dose and schedule that had been cleared in Part A. In select cases (for example, participants achieving stable disease \[SD\], hematological improvement \[HI\], partial response \[PR\] and tolerating treatment, etc.), the dose may be escalated 1 level based on safety and efficacy considerations (completed).
Part F Phase 2: RR High-risk MDS- KPT-8602 single agentKPT-8602Participants will be enrolled at recommended Phase 2 doses (RP2D) of 10 mg daily on Days 1 to 5 of each week, in a dose expansion, based upon the results from the Phase 1 portion of Part F.
Part G: Newly Diagnosed Intermediate/High-Risk MDS -KPT-8602 with ASTX727KPT-8602Participants will receive KPT-8602 once daily at escalated doses. The starting dose for KPT-8602 is 5 mg orally once daily from Day 8 to Day 28 (Weeks 2 to 4) on a 28-day cycle in combination with ASTX727.
Part B: RRMM- KPT-8602 with low-dose dexamethasone; QDx5/weekDexamethasoneParticipants received KPT-8602 for 5 consecutive days (QDx5/week) in combination with low dose dexamethasone (20 milligram \[mg\] on Days 1, 3, 8, 10, 15, 17, 22, and 24 of each 28-day cycle) (completed).
Primary Outcome Measures
NameTimeMethod
Part A1, A2, B, C, D, E, F: Maximum Tolerated Dose (MTD) and Recommended Phase 2 Dose (RP2D)Approximately 4 weeks
Part A1, A2, B, C, D, E, F: Overall Response Rate (ORR)Approximately 8 years
Part A1, A2, B, C, D, E, F: Clinical Benefit Rate (CBR)Approximately 8 years
Part A1, A2, B, C, D, E, F: Duration of Response (DOR)Approximately 8 years
Part A1, A2, B, C, D, E, F: Progression-free Survival (PFS)Approximately 8 years
Part A1, A2, B, C, D, E, F: Overall Survival (OS)Approximately 8 years
Part A1, A2, B, C, D, E, F: Duration of Clinical Benefit Rate (CBR)Approximately 8 years
Part A1, A2, B, C, D, E, F: Disease Control Rate (DCR)Approximately 8 years
Part A1, A2, B, C, D, E, F: Duration of DCRApproximately 8 years
Part F Phase 2: ORRApproximately 8 years
Part G: Maximum Tolerated Dose (MTD) and Recommended Phase 2 Dose (RP2D)Approximately 8 years
Part H: 2- Year Progression-free Survival (PFS)Approximately Up to 2 years
Secondary Outcome Measures
NameTimeMethod
Part A1, A2, B, C, D, E, F, H: Area Under the Plasma Concentration Time Curve from Time Zero to the Time of the Last Quantifiable Concentration (AUC0-t) of EltanexorPre-dose 2 hours post-dose Cycle 1 Day 1 and 15; Pre-dose 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Cycle 1 Day 21 and 26; 24 hours post-dose Cycle 1 Day 2, 22, and 27; 48 hours post-dose Cycle 1 Day 23 and 28 and up to approximately 8 years
Part A1, A2, B, C, D, E, F, H: Maximum Observed Plasma Concentration (Cmax) of EltanexorPre-dose 2 hours post-dose Cycle 1 Day 1 and 15; Pre-dose 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Cycle 1 Day 21 and 26; 24 hours post-dose Cycle 1 Day 2, 22, and 27; 48 hours post-dose Cycle 1 Day 23 and 28 and up to approximately 8 years
Part A1, A2, B, C, D, E, F, H: Time to Reach Maximum Observed Plasma Concentration (Tmax) of EltanexorPre-dose 2 hours post-dose Cycle 1 Day 1 and 15; Pre-dose 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Cycle 1 Day 21 and 26; 24 hours post-dose Cycle 1 Day 2, 22, and 27; 48 hours post-dose Cycle 1 Day 23 and 28 and up to approximately 8 years
Part A1, A2, B, C, D, E, F, H: Apparent Terminal Half Life (t1/2) of EltanexorPre-dose 2 hours post-dose Cycle 1 Day 1 and 15; Pre-dose 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Cycle 1 Day 21 and 26; 24 hours post-dose Cycle 1 Day 2, 22, and 27; 48 hours post-dose Cycle 1 Day 23 and 28 and up to approximately 8 years
Part A1, A2, B, C, D, E, F, H: Apparent Total Body Clearance EltanexorPre-dose 2 hours post-dose Cycle 1 Day 1 and 15; Pre-dose 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Cycle 1 Day 21 and 26; 24 hours post-dose Cycle 1 Day 2, 22, and 27; 48 hours post-dose Cycle 1 Day 23 and 28 and up to approximately 8 years
Part A1, A2, B, C, D, E, F, H: Apparent Volume of Distribution During Terminal Phase (VZ/f) of EltanexorPre-dose 2 hours post-dose Cycle 1 Day 1 and 15; Pre-dose 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Cycle 1 Day 21 and 26; 24 hours post-dose Cycle 1 Day 2, 22, and 27; 48 hours post-dose Cycle 1 Day 23 and 28 and up to approximately 8 years
Part F Phase 2: Overall Survival (OS)Approximately 8 years
Part F Phase 2: 6-Month Overall Survival (OS)Approximately Up to 6 Months
Part F Phase 2: Progression-free Survival (PFS)Approximately 8 years
Part F Phase 2: Disease Control Rate (DCR)Approximately 8 years
Part F Phase 2: Duration of Response (DOR)Approximately 8 years
Part F Phase 2: Rate of Conversion from Red Blood Cell (RBC) Transfusion Dependence to IndependenceApproximately 8 years
Part F Phase 2: Rate of Conversion from Platelet Transfusion Dependence to IndependenceApproximately 8 years
Part G: Overall Response Rate (ORR)Approximately 8 years
Part G: Duration of Response (DOR)Approximately 8 years
Part H: Rate of Minimal Residual Disease (MRD) Conversion from Positive to NegativeApproximately 8 years
Part H: Time to Minimal Residual Disease (MRD) NegativityApproximately 8 years
Part H: Percentage of Participants with Acute and Chronic Graft-versus-Host Disease (GVHD)Approximately 8 years
Part H: Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs)Approximately 8 years
Part H: Overall Survival (OS)Approximately 8 years

Trial Locations

Locations (46)

David Geffen School of Medicine at UCLA

🇺🇸

Los Angeles, California, United States

Oncology Institute of Hope and Innovation

🇺🇸

Pasadena, California, United States

Rocky Mountain Regional VA Medical Center

🇺🇸

Aurora, Colorado, United States

Sarah Cannon Cancer Center - (Colorado Blood Cancer Institute)

🇺🇸

Denver, Colorado, United States

(USO) Rocky Mountain Cancer Centers

🇺🇸

Littleton, Colorado, United States

Moffitt Cancer Center

🇺🇸

Tampa, Florida, United States

Cancer and Hematology Centers of Western Michigan

🇺🇸

Grand Rapids, Michigan, United States

Sarah Cannon Cancer Center (HCA Midwest KC)

🇺🇸

Kansas City, Missouri, United States

Callahan Cancer Center

🇺🇸

North Platte, Nebraska, United States

John Theurer Cancer Center at Hackensack UMC

🇺🇸

Hackensack, New Jersey, United States

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David Geffen School of Medicine at UCLA
🇺🇸Los Angeles, California, United States

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