Clinical Study in Adult and Young Adult Patients With Advanced Desmoplastic Small Round Cell Tumor (DSRCT) ISG-TULIPS (ISG-TULIPS)

March 30, 2026 updated by: Italian Sarcoma Group

Phase II Study of Lurbinectedin and Irinotecan in Adult and Young Adult Patients With Advanced Desmoplastic Small Round Cell Tumor (DSRCT)

Patients participating in this study have DSRCT that has spread locally or to other parts of the body and can no longer be surgically removed without causing significant harm.

Treatment will continue until the tumor progresses further, severe side effects occur, or either patient or investigator decision.

In addition, patients may participate in an optional biological study. The study will analyze the tumor's genes and the molecules related to them. By studying genes and their products, the investigators can better understand the behavior of the tumor and how the body responds to therapies.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

This is an Italian and Spanish multicentric, prospective, phase II single-arm, open-label, investigator-initiated clinical study that will be conducted within the Italian Sarcoma Group (ISG) and the Spanish Sarcoma Groups (GEIS), aiming at exploring the activity of lurbinectedinin combination with irinotecan, until progression or unacceptable toxicity, in a population of =/>15 years old patients with histologically and molecularly confirmed (EWSR1-WT1 translocation positive), advanced (locally advanced or metastatic) DSRCT, from 2nd to 4th line, following progression to anthracycline-based chemotherapy.

The primary end-point of the study will be the overall response rate (ORR) by RECIST v1.1 in the study population. Secondary end-points will be PFS, DoR, OS, safety and changes in QoL.

Patients will be evaluated for the primary end-point if have completed at least one cycle of lurbinectedin and irinotecan and have at least one post-baseline radiologic disease assessment. Patients with documented early progression disease (PD) or who die due to PD before the first scheduled tumor assessment will also be included in the analysis.

Patients will be followed for follow up visits every 6 months for 2 years.

Study Type

Interventional

Enrollment (Estimated)

20

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Histological centrally confirmed diagnosis of DSRCT with the documented presence of EWSR1-WT1 translocation.
  2. Age ≥ 15 years.
  3. Locally advanced (i.e. radical surgical resection of local disease unfeasible or surgery declined by the patient or surgery deemed to become less demolitive and / or easier after cytoreduction) and/or metastatic disease.
  4. Measurable disease by RECIST v1.1.
  5. Clinical or objective disease progression after the last administration of the last standard therapy, or have stopped standard therapy due to intolerability within 6 months from enrollment.
  6. At least one prior chemotherapy based on anthracycline (considering chemotherapy administered for primary tumour) and no more than 3 prior chemotherapy lines.
  7. Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) ≤ 2.

  8. Adequate bone marrow, renal, hepatic, and metabolic function (assessed ≤ 7 days before inclusion in the trial), defined as the following:

    1. platelet count ≥ 100 × 109/L, hemoglobin ≥ 9.0 g/dL, white blood cells ≥ 3.0 × 109/L and absolute neutrophil count (ANC) ≥ 2.0 × 109/L,
    2. aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 3.0 × the upper limit of normal (ULN), even in the presence of liver metastases,
    3. total bilirubin ≤ 1.5 × ULN or direct bilirubin ≤ ULN,
    4. International Normalized Ratio (INR) < 1.5 (except if patient is on oral anticoagulation therapy),
    5. calculated creatinine clearance (CrCL) ≥ 30 mL/minute (using Cockcroft-Gault formula),
    6. creatine phosphokinase (CPK) ≤ 2.5 × ULN,
    7. albumin ≥ 3.0 g/dL.
  9. Cardiac ejection fraction ≥50% as measured by echocardiogram.
  10. Recovery to grade ≤ 1 or to baseline from any adverse event (AE) derived from previous treatment (excluding alopecia and/or cutaneous toxicity and/or fatigue grade ≤ 2).
  11. No history of arterial and/or venous thromboembolic event within the previous 12 months.
  12. Females of childbearing potential must have a negative pregnancy test (preferable by serum or, if serum test unavailable, urine beta-HCG) within 7 days before treatment start.
  13. Post-menopausal women must be amenorrhoeic for at least 12 months to be considered of non-childbearing potential.
  14. Male and female patients of reproductive potential must agree to employ a highly effective method of birth control (Acceptable methods of contraception are described in Appendix 5) throughout the study and thereafter, at the end of study treatment, and for at least 7 months from the patient's last lurbinectedin administration in female patients of childbearing potential and for at least 4 months in men in fertile age after the last lurbinectedin administration.
  15. The patient or legal representative must be able to read and understand the informed consent form (ICF) and must have been willing to give written informed consent and any locally required authorisation before any study-specific procedures, including screening evaluations, sampling, and analyses.

Exclusion Criteria:

  1. Prior treatment with lurbinectedin or trabectedin, Ecubectedin (PM 14) or PM54.
  2. Known hypersensitivity to irinotecan or lurbinectedin or any of their components of the drugs products (excipients).
  3. Other primary malignancy with <5 years clinically assessed disease free interval, except basal cell skin cancer, cervical carcinoma in situ or other neoplasm judged to entail a low risk of relapse.
  4. History or presence of unstable angina, myocardial infarction, or clinically significant valvular heart disease within 12 months of the study.
  5. Grade III/IV cardiac problems as defined by the New York Heart Association Criteria (i.e. congestive heart failure, myocardial infarction within 12 months of study).
  6. Symptomatic arrhythmia or any uncontrolled arrhythmia requiring ongoing treatment within 12 months of study.
  7. Myopathy or any clinical situation that causes significant and persistent elevation of CPK (> 2.5 × ULN in two different determinations performed one week apart).
  8. Severe and/or uncontrolled medical disease (i.e. uncontrolled diabetes, chronic renal disease, or active uncontrolled infection).
  9. Known active brain metastasis.
  10. Known chronic liver disease (i.e. chronic active hepatitis and cirrhosis).
  11. Diagnosis of human deficiency virus (HIV), hepatitis C virus (HCV) infection or active hepatitis B (to be excluded during the screening period).
  12. Any past or present chronic inflammatory colon and/or liver disease, past intestinal obstruction, pseudo or sub-occlusion or paralysis.
  13. Evident symptomatic pulmonary fibrosis or interstitial pneumonitis, pleural or cardiac effusion rapidly increasing and/or necessitating prompt local treatment within seven days.
  14. Any other major illness that, in the Investigator's judgment, will substantially increase the risk associated with the patient's participation in this study.
  15. Known active COVID-19 disease (this includes positive test for SARS-CoV-2 in nasopharyngeal/oropharyngeal swabs or nasal swabs by PCR).
  16. Prior bone marrow and/or stem cell transplantation, and allogenic transplant.
  17. Last dose of systemic cytotoxic therapy or investigational therapy within 21 days from enrollment.
  18. Prior treatment with any form of radiation therapy within 14 days from enrollment.
  19. Major surgery within 3 weeks prior to study entry and minor surgery within 1 week prior to study entry.
  20. Use of strong inducers of CYP3A activity within two weeks prior to the first infusion of lurbinectedin (Appendix 6).
  21. Expected limitation of the patient's ability to comply with the treatment or follow-up protocol.
  22. Subjects who have current active hepatic or biliary disease (with exception of patients with asymptomatic gallstones, liver metastasis or stable chronic liver disease per Investigator assessment).
  23. Subjects who have known Gilbert's syndrome.
  24. Patient has received a live or liver attenuated vaccines within 30 days before the first dose of study intervention. Killed vaccines are allowed.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Lurbinectedine and Irinotecan
lurbinectedin in combination with intravenous irinotecan administered until progression or unacceptable toxicity, in a population of =/>15 years old patients with histologically and molecularly confirmed (EWSR1-WT1 translocation positive), advanced (locally advanced or metastatic) DSRCT, from 2nd to 4th line, following progression to anthracycline-based chemotherapy.
Drug: Lurbinectedin
Lurbinectedin and Irinotecan
Drug: Irinotecan
Lurbinectedin and Irinotecan

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Overall tumour Response Rate (ORR), according to RECIST v 1.1
Time Frame: Week 6, week 12, week 18, week 30, week 42, week 54, week 66, week 78, week 90, week 102 and until progression
Overall tumour Response Rate (ORR), according to RECIST v 1.1
Week 6, week 12, week 18, week 30, week 42, week 54, week 66, week 78, week 90, week 102 and until progression

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Overall Survival (OS)
Time Frame: From date of study therapy start until the date of death from any cause, assessed up to 60 months
Overall Survival (OS)
From date of study therapy start until the date of death from any cause, assessed up to 60 months
Progression Free Survival (PFS)
Time Frame: From date of study therapy start until first documented progression or date of death from any cause, whichever came first, assessed up to 60 months
Progression Free Survival (PFS)
From date of study therapy start until first documented progression or date of death from any cause, whichever came first, assessed up to 60 months
Duration of Response (DoR)
Time Frame: From date of study therapy start until first documented assessment without progression or date of death from any cause, whichever came first, assessed up to 60 months
Duration of Response (DoR)
From date of study therapy start until first documented assessment without progression or date of death from any cause, whichever came first, assessed up to 60 months
Adverse events and Serious adverse event (according to CTC-AE v.5)
Time Frame: After initiation of study treatments(s), all adverse events will be reported until 30 days after the final dose of study treatment or until initiation of new systemic anti-cancer therapy, whichever occurs first.
Adverse events and Serious adverse event (according to CTC-AE v.5)
After initiation of study treatments(s), all adverse events will be reported until 30 days after the final dose of study treatment or until initiation of new systemic anti-cancer therapy, whichever occurs first.
Brief Inventory Pain questionnaire
Time Frame: Screening, cycle1 day1 (each cycle is 21 days), cycle2 day1, End Of Treatment visit (performed 30 days after the last study drug administration), at follow-up visits performed at months 6, 12, 18 and 24 after the last study drug administration
Brief Inventory Pain questionnaire
Screening, cycle1 day1 (each cycle is 21 days), cycle2 day1, End Of Treatment visit (performed 30 days after the last study drug administration), at follow-up visits performed at months 6, 12, 18 and 24 after the last study drug administration
European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (EORTC QLQ-C30)
Time Frame: Screening, cycle1 day1 (each cycle is 21 days), cycle2 day1, End Of Treatment visit (performed 30 days after the last study drug administration), at follow-up visits performed at months 6, 12, 18 and 24 after the last study drug administration

The EORTC QLQ-C30 is a validated 30-item questionnaire assessing health-related quality of life in cancer patients. Scores are linearly transformed to a 0 to 100 scale.

For the Global Health Status/Quality of Life and functional scales (physical, role, emotional, cognitive, and social functioning), higher scores indicate better quality of life or functioning.

For the symptom scales and single-item symptom measures, higher scores indicate greater symptom severity (worse outcome).
Screening, cycle1 day1 (each cycle is 21 days), cycle2 day1, End Of Treatment visit (performed 30 days after the last study drug administration), at follow-up visits performed at months 6, 12, 18 and 24 after the last study drug administration

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Italian Sarcoma Group

Investigators

  • Principal Investigator: Silvia Syecchiotti, MD, Findazione IRCCS Istituto Nazionale Tumori Milano

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

November 21, 2025

Primary Completion (Estimated)

October 1, 2030

Study Completion (Estimated)

October 1, 2030

Study Registration Dates

First Submitted

November 17, 2025

First Submitted That Met QC Criteria

January 2, 2026

First Posted (Actual)

January 9, 2026

Study Record Updates

Last Update Posted (Actual)

April 3, 2026

Last Update Submitted That Met QC Criteria

March 30, 2026

Last Verified

March 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • ISG-TULIPS
  • 2024-519261-21-00 (Ctis)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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