ON 123300 (Narazaciclib) and Dexamethasone in Patients With Relapsed and/or Refractory Multiple Myeloma
Public ClinicalTrials.gov record NCT06351644. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Phase I/II Study to Assess the Safety and Tolerability of the Combination of Oral ON 123300 (Narazaciclib) and Dexamethasone in Patients With Relapsed and/or Refractory Multiple Myeloma
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Multiple myeloma (MM) is a malignancy characterized by uncontrolled proliferation of plasma cells for which there is an urgent and unmet need to develop new, effective therapeutics. Onconova Therapeutics has developed a first-in-class oral inhibitor of CDK4 and ARK5 ON 123300 (NARAZACICLIB) which shows potent anti-myeloma activity in vitro and in vivo in preclinical models, and is undergoing evaluation in Phase 1-2 trials worldwide. In this study, the researchers will test the safety and preliminary efficacy of inhibition of CDK4 and ARK5 by ON 123300 (NARAZACICLIB) in combination with dexamethasone in myeloma patients in a Phase I/II clinical trial.
Study identification
- NCT ID
- NCT06351644
- Recruitment status
- Terminated
- Study type
- Interventional
- Phase
- Phase 1, Phase 2
- Enrollment
- 2 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Oct 1, 2024
- Primary completion
- Apr 27, 2025
- Completion
- Apr 27, 2025
- Last update posted
- Nov 11, 2025
2024 – 2025
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Mount Sinai Health System | New York | New York | 10029 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT06351644, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Nov 11, 2025 · Synced Sep 4, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT06351644 live on ClinicalTrials.gov.