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A Study of Unesbulin (PTC596) in Combination With Dacarbazine in Participants With Advanced Leiomyosarcoma (LMS)
NCT03761095 · View on ClinicalTrials.gov ↗
Study Summary
The primary objective of this study is to determine the maximum tolerated dose (MTD) and recommended phase 2 dose (RP2D) of unesbulin in combination with dacarbazine for the treatment of advanced LMS and determine the overall safety profile of unesbulin in combination with dacarbazine. This study will employ the time-to-event continual reassessment method (TITE-CRM) for dose finding. Treatment will be initiated at dose level 2 (DL2) (Dacarbazine 1000 milligrams per square meter \[mg/m\^2\] intravenously \[IV\] every 21 days in combination with unesbulin 200 milligrams \[mg\] orally twice weekly) for the first participant. This dose level represents the investigator's best assessment of the MTD based on available toxicity data for both agents. For subsequent participants, the dose level at which treatment is initiated will be selected based on the TITE-CRM using the most up to date dose-limiting toxicity (DLT) information from all participants previously treated. To enroll additional participants at the RP2D, the study is amended to include an expansion cohort of up to 12 participants (some of whom could be ongoing participants who reconsent). Treatment will continue for each participant until evidence of unacceptable toxicity, disease progression, or treatment discontinuation for another reason.
Conditions Studied
Interventions
- DRUG Dacarbazine
- DRUG Unesbulin
Study Locations (4)
Florida
- Mayo Clinic Florida — Jacksonville
Maryland
- John Hopkins — Baltimore
Missouri
- Washington University Medical Campus — St Louis
New York
- Columbia University Medical Center — New York
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 41 participants |
| Start Date | 2019-03-13 |
| Est. Completion | 2024-02-05 |
| Phase | Phase 1 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT03761095
The ClinicalTrials.gov registry entry for NCT03761095 describes a study currently listed as completed. It is categorized as Phase 1, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 41 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is PTC Therapeutics, which has 15 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 1 condition, with Leiomyosarcoma appearing as the primary indexed condition, and to 2 interventions — of which Dacarbazine is the first listed. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT03761095 reports 4 study locations spanning 4 distinct geographic areas — top geographies include Florida, Maryland, Missouri. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT03761095 about?
NCT03761095 is a clinical study titled "A Study of Unesbulin (PTC596) in Combination With Dacarbazine in Participants With Advanced Leiomyosarcoma (LMS)". The primary objective of this study is to determine the maximum tolerated dose (MTD) and recommended phase 2 dose (RP2D) of unesbulin in combination with dacarbazine for the treatment of advanced LMS and determine the overall safety profile of unesbulin in combination with dacarbazine. This study w...
What is the current status of trial NCT03761095?
This trial is currently completed. It is a Phase 1 study. The enrollment target is 41 participants. The study started on 2019-03-13. Estimated completion is 2024-02-05.
What conditions does trial NCT03761095 study?
This clinical trial studies the following conditions: Leiomyosarcoma. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
What interventions are being tested in trial NCT03761095?
The interventions under investigation include: Dacarbazine (DRUG), Unesbulin (DRUG). Each intervention is being evaluated for safety and efficacy as part of this clinical study.
Who is sponsoring clinical trial NCT03761095?
This trial is sponsored by PTC Therapeutics, which has 15 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT03761095 being conducted?
This trial has 4 study locations across Florida, Maryland, Missouri, New York. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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