Metronomic Trabectedin, Gemcitabine, and Dacarbazine for Soft Tissue Sarcoma

Q: Who can participate in NCT04535271?

Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.

Q: How do I contact the trial site for NCT04535271?

Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.

Q: Is participating in a clinical trial safe?

Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.

Q: Where can I verify the data on this page?

Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.

TAGGED: A Phase 2 Study Using Low Dose/Metronomic Trabectedin, Gemcitabine, and Dacarbazine as 2nd/3rd/4th Line Therapy for Advanced Soft Tissue Sarcoma

Metronomic Trabectedin, Gemcitabine, and Dacarbazine for Soft Tissue Sarcoma (NCT04535271) is a Phase 2 interventional studying Leiomyosarcoma, sponsored by Sarcoma Oncology Research Center, LLC. RECRUITING as of the most recent ClinicalTrials.gov update. Talk to your doctor before contacting the trial site.

About This Trial

This is an open label phase 2 study using metronomic doses of trabectedin, gemcitabine and dacarbazine given intravenously.

What Stage of Research Is This?

Phase 2 trials evaluate whether a treatment actually works against Leiomyosarcoma and continue monitoring side effects. Phase 2 enrolls larger groups (typically 100–300 patients) and produces the first real efficacy signal. A successful Phase 2 readout is what unlocks the much larger Phase 3 confirmatory trials needed for FDA approval.

This trial is currently recruiting participants. The sponsor has registered the study with ClinicalTrials.gov as actively enrolling, which means new applicants who meet the eligibility criteria can be considered for screening. Trial status can change between updates — confirm current recruiting status with the study contact before traveling for a screening visit.

Target enrollment of 80 participants puts this in the typical range for a Phase 2-style efficacy study or a moderate Phase 3 trial in a focused Leiomyosarcoma subpopulation. At this scale, the study has enough statistical power to detect a clear treatment effect but is not the largest cohort in the field.

Who May Be Eligible (Plain English)

Who May Qualify: - Male or Female ≥ 18 years of age - Pathologically confirmed diagnosis of locally advanced, unresectable or metastatic leiomyosarcoma - Previously treated patient with measurable disease by RECIST v1.1 - ECOG performance status ≤ 2 - expected to live at least 3 months - Acceptable liver function: Bilirubin \< 1.5 times upper limit of normal (ULN; except subjects with Gilbert Syndrome who must have a total bilirubin level \< 3.0 ULN); AST (SGOT), ALT (SGPT) and alk phos \< 2.5 x ULN (\< 5 x ULN if liver metastases present) - Acceptable renal function: Creatinine \< 1.5 times ULN and creatinine clearance \> 60 ml/min using the Crockroft-Gault formula - Acceptable hematologic status: ANC \>1000 cells/μL; Platelet count \>100,000/μL; Hemoglobin \> 9.0 g/dL - INR and PT \< 1.5 ULN unless taking anti-coagulation, in which case PT, INR and aPTT must be within therapeutic range of intended use of anticoagulants - Ability to understand the purposes and risks of the study and has signed and dated a written willing to sign a consent form form approved by the Investigator's IRB/Ethics Committee - Willingness to comply with all study procedures and availability for the duration of the study - All women of childbearing potential must have a negative urine or serum pregnancy test within 72 hours of enrollment. If urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required; all subjects must agree to use highly effective means of contraception (surgical sterilization or the use of barrier contraception with either a condom or diaphragm in conjunction with spermicidal gel or an IUD) with their partner from entry into the study through 5 months for women and 7 months for men after the last dose. Who Should NOT Join This Trial: - Currently receiving treatment with another investigational device or drug study, or \<14 days since ending treatment with another investigational device or drug study(s). ...See full criteria on ClinicalTrials.gov Always talk to your doctor about whether this trial is right for you.

These are translations of the protocol\'s inclusion and exclusion criteria, simplified for patients and caregivers. The original clinical text appears below. Eligibility is ultimately confirmed by the trial site\'s screening process — this summary is a starting point for a conversation with your doctor, not a final determination.

Original Eligibility Criteria

View original clinical language

Inclusion Criteria: * Male or Female ≥ 18 years of age * Pathologically confirmed diagnosis of locally advanced, unresectable or metastatic leiomyosarcoma * Previously treated patient with measurable disease by RECIST v1.1 * ECOG performance status ≤ 2 * Life expectancy of at least 3 months * Acceptable liver function: Bilirubin \< 1.5 times upper limit of normal (ULN; except subjects with Gilbert Syndrome who must have a total bilirubin level \< 3.0 ULN); AST (SGOT), ALT (SGPT) and alk phos \< 2.5 x ULN (\< 5 x ULN if liver metastases present) * Acceptable renal function: Creatinine \< 1.5 times ULN and creatinine clearance \> 60 ml/min using the Crockroft-Gault formula * Acceptable hematologic status: ANC \>1000 cells/μL; Platelet count \>100,000/μL; Hemoglobin \> 9.0 g/dL * INR and PT \< 1.5 ULN unless taking anti-coagulation, in which case PT, INR and aPTT must be within therapeutic range of intended use of anticoagulants * Ability to understand the purposes and risks of the study and has signed and dated a written informed consent form approved by the Investigator's IRB/Ethics Committee * Willingness to comply with all study procedures and availability for the duration of the study * All women of childbearing potential must have a negative urine or serum pregnancy test within 72 hours of enrollment. If urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required; all subjects must agree to use highly effective means of contraception (surgical sterilization or the use of barrier contraception with either a condom or diaphragm in conjunction with spermicidal gel or an IUD) with their partner from entry into the study through 5 months for women and 7 months for men after the last dose. Exclusion Criteria: * Currently receiving treatment with another investigational device or drug study, or \<14 days since ending treatment with another investigational device or drug study(s). * Subject has known sensitivity to trabectedin, gemcitabine or dacarbazine. * Female subject is pregnant or breast-feeding or planning to become pregnant during study treatment and through 3 months after the last dose of trabectedin, gemcitabine or dacarbazine. * Female subject of childbearing potential who is unwilling to use acceptable method(s) of effective contraception during study treatment and through 3 months after the last dose of trabectedin, gemcitabine or dacarbazine. * Sexually active subjects and their partners unwilling to use male or female latex condom

Treatments Being Tested

DRUG

Trabectedin

This is an open label phase 2 study using metronomic doses of trabectedin, gemcitabine and dacarbazine given intravenously.

Locations (1)

Trial sites listed on ClinicalTrials.gov for this study. Site activation status can vary — confirm with the specific site before traveling for a screening visit.

Sant P Chawla

Santa Monica, California, United States

How to Talk to Your Doctor About This Trial

Bring the printable summary of this trial — including the NCT ID (NCT04535271), the sponsor (Sarcoma Oncology Research Center, LLC), and the key eligibility criteria — to your next appointment. Your doctor can review the inclusion and exclusion criteria against your medical history, lab values, and current treatments to assess whether you are likely to qualify. They can also help you weigh whether trial participation makes sense alongside your existing care plan.

Useful questions to walk through together: What does the trial protocol require beyond standard care? How long is the active treatment phase, and how long is follow-up? Are there study visits at sites I can reach? Who pays for the trial-specific procedures, and who pays for standard-of-care portions? See our 25 questions to ask about clinical trials guide for a more complete checklist.

Authoritative Sources

The official record for this trial lives on ClinicalTrials.gov — the federal registry maintained by the National Library of Medicine at NIH. For background on how this trial fits into the FDA approval pathway, see the FDA drug approval process. For oncology-specific guidance for patients considering trials, the National Cancer Institute publishes patient-oriented overviews. International trial registries are aggregated by the WHO ICTRP.

Frequently Asked Questions

What is the NCT04535271 clinical trial studying?

This is an open label phase 2 study using metronomic doses of trabectedin, gemcitabine and dacarbazine given intravenously. The full protocol is registered on ClinicalTrials.gov and includes the primary outcome measures, eligibility criteria, and study endpoints.

Who can participate in NCT04535271?

Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.

How do I contact the trial site for NCT04535271?

Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.

Is participating in a clinical trial safe?

Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.

Where can I verify the data on this page?

Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.

How This Page Is Built

Every field on this page is pulled directly from the ClinicalTrials.gov API v2 — no estimates, no proxies. The plain-English eligibility translation is generated from the original protocol text and reviewed for fidelity to the underlying clinical criteria. The original clinical text remains visible in the collapsible section above so users and clinicians can verify the translation. Read the full methodology for the data pipeline and known limitations.

Source: ClinicalTrials.gov API v2 record for NCT04535271. Maintained by the National Library of Medicine at NIH. Public domain. Cite as: "TrialFinderData. NCT04535271. Data: ClinicalTrials.gov."

Medical disclaimer: This page is informational, not medical advice. Talk to your doctor about whether a clinical trial is right for you.

Last updated 2026-06-07 · Data from ClinicalTrials.gov.