Pbi-shRNA™ EWS/FLI1 Type 1 LPX in Subjects With Advanced Ewing's Sarcoma

NCT ID: NCT02736565

Last Updated: 2023-11-13

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1
• Total Enrollment: 7 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2016-10-31
• Study Completion Date: 2020-08-04

Brief Summary

The purpose of this study is to determine the safety and the maximum tolerated dose of of pbi-shRNA™ EWS/FLI1 Type 1 lipoplex in patients with advanced Ewing's sarcoma.

Detailed Description

Eligible participants with advanced Ewing's sarcoma will be accrued in 3-subject dose escalation cohorts using the following escalation schema (50%→33%→25%→25%→25%) at a starting IV dose of 0.04 mg/kg and up to a dose of 0.156mg/kg.

For this first in class study of pbi-shRNA™ EWS/FLI1 Type 1 lipoplex, Dose Limiting Toxicity (DLT) will be defined as any ≥ Grade 3 toxicity reported within the four weeks following the first administration of the investigational product, regardless of attribution. Any other ≥ Grade 3 toxicity encountered after the first four weeks post Dose 1 on Cycle 1 will be reported according to the CTCAE Version 4.0 but not defined as DLTs.

If 1 of 3 subjects within a dose cohort experiences a DLT, that dose cohort will be expanded to six subjects provided no further subjects experience a DLT. If no further subjects experience a DLT, dose-escalation may continue. If ≥2 subjects within a dose cohort experiences a DLT, this will define the DLT dose level and the Maximum Tolerated Dose (MTD) will have been exceeded.

The preceding dose level will be expanded to a total of 6 subjects and, if ≤1 subject experiences a DLT, that dose level will be considered the MTD. If no further subjects experience a DLT, dose-escalation may resume per escalation schema. Once the presumptive MTD is reached, an additional 6 subjects will be treated at that dose, designated the expanded MTD dose cohort.

Participants who experience an unrelated Grade ≥3 toxicity that normalizes within 1 week may continue study treatment when the adverse event returns to Grade 1 or better at 50% of their assigned cohort dose. Delay in dosing of >24 hours will require that the next dose is skipped.

As of protocol Amendment No. 5, two subjects met the definition of dose limiting toxicity at Cohort 1, 0.04mg/kg, therefore the dose reduced by 50% and subsequent lipoplex administrations were given at 0.02mg/kg. Administration of 0.02mg/kg is defined as Cohort -1. An additional 6 subjects will be treated at Cohort -1, designated the expanded MTD dose cohort. If no further subjects experience a DLT at Cohort -1, dose re-escalation may continue to Cohort 0. The dose administered for subjects in Cohort 0 is 0.03mg/kg and would be defined as the optimal dose.

All study agent administrations will cease for the occurrence of any of the following events at any time point over the four weeks following the first study agent dose administration to a participant: death, hospitalization for reasons other than those related to the participant's malignancy (excluding preplanned hospitalization and/or hospitalization for observation during the participant's first infusion), or any Grade ≥3 liver toxicity or Grade ≥4 pulmonary toxicity. All Grade ≥3 liver toxicities or Grade ≥4 pulmonary toxicities will be considered Adverse Events of Special Interest (AESI).

Participants will receive an intravenous infusion twice a week for 4 weeks for a total of 8 infusions per cycle followed by 2 weeks of rest. Treatment with investigational product may continue as long as there is clinical benefit, no evidence of disease progression, and no other withdrawal criteria are met.

Safety assessments will include physical examinations, performance status, laboratory assessments, and vital signs. Toxicity (Adverse Events) will be recorded for the duration of the participant's study treatment (following the first dose), and for up to 60 days following the last study treatment. Toxicities and AEs will be graded and reported using the Common Toxicity Criteria for Adverse Events (CTCAE) Version 4.0.

Efficacy assessments (response and progression) will be evaluated by local investigators using the Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1.

Conditions

Ewing's Sarcoma; Ewing Family of Tumors; Ewing's Tumor Metastatic; Ewing's Sarcoma Metastatic; Ewing's Tumor Recurrent; Rare Diseases; Sarcoma

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: SEQUENTIAL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Cohort -1

0.02mg/kg pbi-shRNA™ EWS/FL/I1 Type 1 Lipoplex

Group Type: EXPERIMENTAL

pbi-shRNA™ EWS/FLI1 Type 1 Lipoplex

Intervention Type: BIOLOGICAL

Lipoplex is given intravenously as a single administration twice a week for 4 weeks for a total of 8 infusions per cycle followed by 2 weeks of rest. Treatment may continue as long as there is clinical benefit, no evidence of disease progression, and no other withdrawal criteria are met.

First dose started on Cycle 1 Week 1 Day 1 followed by observation and safety assessment for 13 days. If no toxicity was observed, then another single administration of study agent was given at Cycle 1 Week 3 Day 1 followed by observation and safety for 6 days. If no toxicity was observed, then study agent was given twice a week on Days 1 and 4 over 3 weeks, for a total of 8 infusions per cycle, followed by a 2-week washout before starting each subsequent cycle. Cycle 1 = 8 weeks. Each subsequent cycles = 6 weeks.

Cohort 0

0.03mg/kg pbi-shRNA™ EWS/FL/I1 Type 1 Lipoplex

Group Type: EXPERIMENTAL

pbi-shRNA™ EWS/FLI1 Type 1 Lipoplex

Intervention Type: BIOLOGICAL

Lipoplex is given intravenously as a single administration twice a week for 4 weeks for a total of 8 infusions per cycle followed by 2 weeks of rest. Treatment may continue as long as there is clinical benefit, no evidence of disease progression, and no other withdrawal criteria are met.

First dose started on Cycle 1 Week 1 Day 1 followed by observation and safety assessment for 13 days. If no toxicity was observed, then another single administration of study agent was given at Cycle 1 Week 3 Day 1 followed by observation and safety for 6 days. If no toxicity was observed, then study agent was given twice a week on Days 1 and 4 over 3 weeks, for a total of 8 infusions per cycle, followed by a 2-week washout before starting each subsequent cycle. Cycle 1 = 8 weeks. Each subsequent cycles = 6 weeks.

Cohort 1

0.04mg/kg pbi-shRNA™ EWS/FL/I1 Type 1 Lipoplex

Group Type: EXPERIMENTAL

pbi-shRNA™ EWS/FLI1 Type 1 Lipoplex

Intervention Type: BIOLOGICAL

Lipoplex is given intravenously as a single administration twice a week for 4 weeks for a total of 8 infusions per cycle followed by 2 weeks of rest. Treatment may continue as long as there is clinical benefit, no evidence of disease progression, and no other withdrawal criteria are met.

First dose started on Cycle 1 Week 1 Day 1 followed by observation and safety assessment for 13 days. If no toxicity was observed, then another single administration of study agent was given at Cycle 1 Week 3 Day 1 followed by observation and safety for 6 days. If no toxicity was observed, then study agent was given twice a week on Days 1 and 4 over 3 weeks, for a total of 8 infusions per cycle, followed by a 2-week washout before starting each subsequent cycle. Cycle 1 = 8 weeks. Each subsequent cycles = 6 weeks.

Cohort 2

0.06mg/kg pbi-shRNA™ EWS/FL/I1 Type 1 Lipoplex

Group Type: EXPERIMENTAL

pbi-shRNA™ EWS/FLI1 Type 1 Lipoplex

Intervention Type: BIOLOGICAL

Lipoplex is given intravenously as a single administration twice a week for 4 weeks for a total of 8 infusions per cycle followed by 2 weeks of rest. Treatment may continue as long as there is clinical benefit, no evidence of disease progression, and no other withdrawal criteria are met.

First dose started on Cycle 1 Week 1 Day 1 followed by observation and safety assessment for 13 days. If no toxicity was observed, then another single administration of study agent was given at Cycle 1 Week 3 Day 1 followed by observation and safety for 6 days. If no toxicity was observed, then study agent was given twice a week on Days 1 and 4 over 3 weeks, for a total of 8 infusions per cycle, followed by a 2-week washout before starting each subsequent cycle. Cycle 1 = 8 weeks. Each subsequent cycles = 6 weeks.

Cohort 3

0.08mg/kg pbi-shRNA™ EWS/FL/I1 Type 1 Lipoplex

Group Type: EXPERIMENTAL

pbi-shRNA™ EWS/FLI1 Type 1 Lipoplex

Intervention Type: BIOLOGICAL

Lipoplex is given intravenously as a single administration twice a week for 4 weeks for a total of 8 infusions per cycle followed by 2 weeks of rest. Treatment may continue as long as there is clinical benefit, no evidence of disease progression, and no other withdrawal criteria are met.

First dose started on Cycle 1 Week 1 Day 1 followed by observation and safety assessment for 13 days. If no toxicity was observed, then another single administration of study agent was given at Cycle 1 Week 3 Day 1 followed by observation and safety for 6 days. If no toxicity was observed, then study agent was given twice a week on Days 1 and 4 over 3 weeks, for a total of 8 infusions per cycle, followed by a 2-week washout before starting each subsequent cycle. Cycle 1 = 8 weeks. Each subsequent cycles = 6 weeks.

Cohort 4

0.10mg/kg pbi-shRNA™ EWS/FL/I1 Type 1 Lipoplex

Group Type: EXPERIMENTAL

pbi-shRNA™ EWS/FLI1 Type 1 Lipoplex

Intervention Type: BIOLOGICAL

Lipoplex is given intravenously as a single administration twice a week for 4 weeks for a total of 8 infusions per cycle followed by 2 weeks of rest. Treatment may continue as long as there is clinical benefit, no evidence of disease progression, and no other withdrawal criteria are met.

First dose started on Cycle 1 Week 1 Day 1 followed by observation and safety assessment for 13 days. If no toxicity was observed, then another single administration of study agent was given at Cycle 1 Week 3 Day 1 followed by observation and safety for 6 days. If no toxicity was observed, then study agent was given twice a week on Days 1 and 4 over 3 weeks, for a total of 8 infusions per cycle, followed by a 2-week washout before starting each subsequent cycle. Cycle 1 = 8 weeks. Each subsequent cycles = 6 weeks.

Cohort 5

0.125mg/kg pbi-shRNA™ EWS/FL/I1 Type 1 Lipoplex

Group Type: EXPERIMENTAL

pbi-shRNA™ EWS/FLI1 Type 1 Lipoplex

Intervention Type: BIOLOGICAL

Lipoplex is given intravenously as a single administration twice a week for 4 weeks for a total of 8 infusions per cycle followed by 2 weeks of rest. Treatment may continue as long as there is clinical benefit, no evidence of disease progression, and no other withdrawal criteria are met.

First dose started on Cycle 1 Week 1 Day 1 followed by observation and safety assessment for 13 days. If no toxicity was observed, then another single administration of study agent was given at Cycle 1 Week 3 Day 1 followed by observation and safety for 6 days. If no toxicity was observed, then study agent was given twice a week on Days 1 and 4 over 3 weeks, for a total of 8 infusions per cycle, followed by a 2-week washout before starting each subsequent cycle. Cycle 1 = 8 weeks. Each subsequent cycles = 6 weeks.

Cohort 6

0.156mg/kg pbi-shRNA™ EWS/FL/I1 Type 1 Lipoplex

Group Type: EXPERIMENTAL

pbi-shRNA™ EWS/FLI1 Type 1 Lipoplex

Intervention Type: BIOLOGICAL

Lipoplex is given intravenously as a single administration twice a week for 4 weeks for a total of 8 infusions per cycle followed by 2 weeks of rest. Treatment may continue as long as there is clinical benefit, no evidence of disease progression, and no other withdrawal criteria are met.

First dose started on Cycle 1 Week 1 Day 1 followed by observation and safety assessment for 13 days. If no toxicity was observed, then another single administration of study agent was given at Cycle 1 Week 3 Day 1 followed by observation and safety for 6 days. If no toxicity was observed, then study agent was given twice a week on Days 1 and 4 over 3 weeks, for a total of 8 infusions per cycle, followed by a 2-week washout before starting each subsequent cycle. Cycle 1 = 8 weeks. Each subsequent cycles = 6 weeks.

Interventions

pbi-shRNA™ EWS/FLI1 Type 1 Lipoplex

Lipoplex is given intravenously as a single administration twice a week for 4 weeks for a total of 8 infusions per cycle followed by 2 weeks of rest. Treatment may continue as long as there is clinical benefit, no evidence of disease progression, and no other withdrawal criteria are met.

First dose started on Cycle 1 Week 1 Day 1 followed by observation and safety assessment for 13 days. If no toxicity was observed, then another single administration of study agent was given at Cycle 1 Week 3 Day 1 followed by observation and safety for 6 days. If no toxicity was observed, then study agent was given twice a week on Days 1 and 4 over 3 weeks, for a total of 8 infusions per cycle, followed by a 2-week washout before starting each subsequent cycle. Cycle 1 = 8 weeks. Each subsequent cycles = 6 weeks.

Intervention Type: BIOLOGICAL

Other Intervention Names

Lipoplex

Eligibility Criteria

Inclusion Criteria

1. Histologically confirmed Ewing's Sarcoma Family of Tumors (ESFT).

2. Age ≥8 years.

3. Evidence of EWS translocation fusion by FISH or RT-PCR or NGS.

4. Evidence of Type 1 fusion by molecular diagnostics.

5. Refractory or intolerant to standard of care. Subjects must have failed surgery (if resectable), radiation (if no function-preserving surgical approach at primary site, unresectable primary following induction chemotherapy, residual microscopic or gross disease after surgery or inadequate margins), and the following chemotherapy agents: doxorubicin, vincristine, cyclophosphamide, ifosfamide, etoposide.

6. ECOG performance status (PS) = 0-2, or Karnofsky PS ≥60% or Lansky PS ≥60%.

7. Normal organ and marrow function as defined below:

Absolute granulocyte count ≥1,000/mm3 Absolute lymphocyte count ≥400/mm3 Platelets ≥100,000/mm3 Total bilirubin ≤ institutional upper limit of normal AST(SGOT)/ALT(SGPT) ≤2x institutional upper limit of normal Creatinine <1.5 mg/dL

8. Normal pulmonary function as defined as FEV1/FVC greater than 70% in adults or greater than 80% in individuals between 8 and 18 years of age.

9. Subject has recovered to CTCAE Grade 1 or better from all adverse events associated with prior therapy or surgery. Pre-existing motor or sensory neurologic pathology or symptoms must be recovered to CTCAE Grade 2 or better.

10. If female of childbearing potential, has a negative urine or serum pregnancy test. If the urine test is positive or cannot be confirmed as negative, a negative serum test will be required for study entry.

11. Ability to understand and the willingness to sign a written informed protocol specific consent. Pediatric patients must sign an assent with a parent or legal guardian sign a written informed consent, per institutional guidelines.

Subjects will NOT be eligible for study registration and enrollment if meeting any of the following criteria:

Exclusion Criteria

1. Anti-cancer chemotherapy, biologic therapy or immunotherapy within 3 weeks or radiation therapy within 2 weeks of first infusion.

2. Known history of other malignancy unless having undergone curative intent therapy without evidence of that disease for ≥ 3 years except cutaneous squamous cell and basal cell skin cancer, superficial bladder cancer, in situ cervical cancer or other in situ cancers are allowed if definitively resected.

3. Patients with PET avid disease only will be excluded.

4. Brain metastases unless treated with curative intent (gamma knife or surgical resection) and without evidence of progression for ≥ 2 months.

5. History of or current evidence of thrombosis.

6. History of or current evidence of any condition (including medical, psychiatric or substance abuse disorder), therapy, or laboratory abnormality that might confound the results of the study, interfere with the subject's participation for the full duration of the study, or is not in the best interest of the subject to participate, in the opinion of the Investigator.

7. Known HIV or chronic Hepatitis B or C infection.

8. Have signs and symptoms consistent with an active infection.

9. Live vaccination for the prevention of infectious disease administered <30 days prior to the start of study therapy or inactivated vaccination <14 days prior to the start of study therapy.

• Minimum Eligible Age: 8 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Gradalis, Inc.

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

John Nemunaitis, MD

Role: STUDY_DIRECTOR

Gradalis, Inc.

Locations

Memorial Sloan Kettering Cancer Center

New York, New York, United States

Mary Crowley Cancer Research Centers

Dallas, Texas, United States

Countries

United States

References

Barve M, Wang Z, Kumar P, Jay CM, Luo X, Bedell C, Mennel RG, Wallraven G, Brunicardi FC, Senzer N, Nemunaitis J, Rao DD. Phase 1 Trial of Bi-shRNA STMN1 BIV in Refractory Cancer. Mol Ther. 2015 Jun;23(6):1123-1130. doi: 10.1038/mt.2015.14. Epub 2015 Jan 26.

Reference Type: BACKGROUND

PMID: 25619726 (View on PubMed)

Wang Z, Rao DD, Senzer N, Nemunaitis J. RNA interference and cancer therapy. Pharm Res. 2011 Dec;28(12):2983-95. doi: 10.1007/s11095-011-0604-5. Epub 2011 Oct 19.

Reference Type: BACKGROUND

PMID: 22009588 (View on PubMed)

Senzer N, Barve M, Kuhn J, Melnyk A, Beitsch P, Lazar M, Lifshitz S, Magee M, Oh J, Mill SW, Bedell C, Higgs C, Kumar P, Yu Y, Norvell F, Phalon C, Taquet N, Rao DD, Wang Z, Jay CM, Pappen BO, Wallraven G, Brunicardi FC, Shanahan DM, Maples PB, Nemunaitis J. Phase I trial of "bi-shRNAi(furin)/GMCSF DNA/autologous tumor cell" vaccine (FANG) in advanced cancer. Mol Ther. 2012 Mar;20(3):679-86. doi: 10.1038/mt.2011.269. Epub 2011 Dec 20.

Reference Type: BACKGROUND

PMID: 22186789 (View on PubMed)

Rao DD, Jay C, Wang Z, Luo X, Kumar P, Eysenbach H, Ghisoli M, Senzer N, Nemunaitis J. Preclinical Justification of pbi-shRNA EWS/FLI1 Lipoplex (LPX) Treatment for Ewing's Sarcoma. Mol Ther. 2016 Aug;24(8):1412-22. doi: 10.1038/mt.2016.93. Epub 2016 May 11.

Reference Type: BACKGROUND

PMID: 27166877 (View on PubMed)

Other Identifiers

CL-PTL-001

Identifier Type: -

Identifier Source: org_study_id