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KPT-330

Phase 1

Hematological Malignancies | Small molecule | Oncology |Karyopharm Therapeutics Inc.|Last Updated: May 29, 2026

Target and mechanism

Molecular targetXPO1
Target classNuclear Export Protein
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment286

FDA Designations

No designations recorded

Clinical trial landscape

KPT-330 · 2 trials · 10 indications

Phase 1 2
NCT02091245Phase I Trial of the Selective Inhibitor of Nuclear Export, KPT-330, in Relapsed Childhood ALL and AMLRelapsed Acute Lymphoblastic Leukemia (ALL)
ACTIVE NOT_RECRUITING16 Analytics
NCT01607892Safety Study of the Selective Inhibitor of Nuclear Export (SINE) KPT-330 in Patients With Advanced Hematological CancerHematological Malignancies
COMPLETED286 Analytics
PHASE1ACTIVE NOT_RECRUITING
Phase I Trial of the Selective Inhibitor of Nuclear Export, KPT-330, in Relapsed Childhood ALL and AML
Relapsed Acute Lymphoblastic Leukemia (ALL)Unlock trial analytics
PHASE1COMPLETED
Safety Study of the Selective Inhibitor of Nuclear Export (SINE) KPT-330 in Patients With Advanced Hematological Cancer
Hematological MalignanciesUnlock trial analytics

Study Endpoints

Primary Endpoints

Toxicity profile of KPT-330 assessed by Common Terminology Criteria for Adverse Events (CTCAE) version 4.0
3 Years

Toxicities will be tabulated by type and grade.

Maximum tolerated dose (MTD) of KPT-330 determined by incidence of dose limiting toxicities.
2 Years

Toxicities graded by CTCAE version 4.0

Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Treatment-Emergent Serious Adverse Events (TESAEs)
From first dose of study drug administration to end of treatment (up to 27 months)

An adverse event (AE) was any untoward medical occurrence in a clinical investigation participant administered a pharmaceutical product during the course of a study and which does not necessarily have to have a causal relationship with this treatment. An Serious adverse event (SAE) was an AE resulting in any of the following outcomes: death; life-threatening event; required or prolonged inpatient hospitalization; persistent or significant disability/incapacity; congenital anomaly. TEAEs are any untoward medical incidence in a participant during administered study treatment, whether or not these events were related to study treatment.

Recommended Phase 2 Dose (RP2D) of Selinexor
From first dose of study drug administration to end of treatment (up to 27 months)

Recommended Phase 2 dose was determined by maximum tolerated dose (MTD). MTD was defined as the next lower dose level below the one in which \> 1 of 3 participants or ≥ 2 of 6 participants experienced dose-limiting toxicity (DLT), provided that that dose level is ≤25% lower than the highest dose tested. If the projected MTD was \>25% lower than the highest dose tested, then an additional cohort of ≥3 participants were added at a dose that was intermediate between the intolerable dose and the next lower dose.

Secondary Endpoints

Measurement of KPT-330 in the blood, urine and cerebrospinal fluid.
2 Years
Assessment of anti-leukemic activity of KPT-330 measured by objective response rates.
3 Years
Biomarker analysis including measurements of cytokine levels and expression of XPO1 in white blood cells.
3 Years
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
KPT-330EXPERIMENTALKPT-330 will be administered twice a week on Days 1 and 3 for four weeks. Starting dose 30 mg/m2.In the dose-escalation cohort, three patients will initially be enrolled at each dose level and will be monitored for a DLT during the 28-day treatment cycle before dose escalation may occur.
selinexorEXPERIMENTAL -

Interventions

NameTypeDescription
KPT-330DRUG -
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Eligibility Criteria

Age Range12 Months to 21 Years
SexALL
Healthy VolunteersNo
Study Sites10

Inclusion Criteria: * Age: Patient must be ≥ 12 months (365 days) and ≤ 21 years. * Histologically confirmed diagnosis of relapsed or refractory ALL (including Burkitt leukemia), AML, mixed lineage leukemia, biphenotypic leukemia, or chronic myelogenous leukemia (CML) in blast crisis. * Refracto...

Countries:United StatesCanadaDenmark
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Frequently asked questions about KPT-330

What is KPT-330 used for?

KPT-330 is an investigational small molecule being studied for the treatment of hematological malignancies, including relapsed acute lymphoblastic leukemia (ALL). It is currently in Phase 1 clinical development and is not yet approved by the FDA.

What does KPT-330 target?

KPT-330 targets XPO1, a nuclear export protein. By inhibiting XPO1, the drug is designed to block the export of tumor suppressor proteins from the nucleus, potentially restoring their function in cancer cells.

Who makes KPT-330?

KPT-330 is being developed by Karyopharm Therapeutics Inc., a biopharmaceutical company traded on the stock exchange under the ticker symbol KPTI.

What phase is KPT-330 in?

KPT-330 is in Phase 1 clinical development. It is an investigational drug and has not received FDA approval. Clinical trials are ongoing to evaluate its safety and efficacy in patients with hematological cancers.

What clinical trials is KPT-330 in?

KPT-330 has been studied in two Phase 1 trials. NCT01607892, a completed safety study in 286 adults with advanced hematological cancer, and NCT02091245, an active trial in 16 children with relapsed or refractory leukemias including ALL and AML.

Is KPT-330 the same as selinexor?

KPT-330 is also known as selinexor. It is a selective inhibitor of nuclear export (SINE) compound being developed by Karyopharm Therapeutics for the treatment of hematological malignancies.