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Combination Chemotherapy in Treating Patients With Non-Metastatic Extracranial Ewing Sarcoma

A Phase III Randomized Trial of Adding Vincristine-Topotecan-Cyclophosphamide to Standard Chemotherapy in Initial Treatment of Non-Metastatic Ewing Sarcoma

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01231906
Enrollment
642
Registered
2010-11-01
Start date
2010-11-24
Completion date
2025-12-31
Last updated
2026-01-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Localized Extraskeletal Ewing Sarcoma, Peripheral Primitive Neuroectodermal Tumor of Bone, Peripheral Primitive Neuroectodermal Tumor of Soft Tissues

Brief summary

This trial examined the outcome benefit to patients of adding a new chemotherapy drug combination to the established treatment approach for patients with extracranial Ewing sarcoma, that had not spread from the primary site to other places in the body. The trial randomly assigned patients at the time of study entry to receive established standard treatment with the following 5-drugs: vincristine sulfate, doxorubicin hydrochloride, cyclophosphamide, ifosfamide and etoposide. The outcome for patients receiving the standard 5-drug combination was compared to the outcome for patients who received the same 5-drugs with an additional drug, topotecan hydrochloride delivered in a novel combination with vincristine sulfate and cyclophosphamide.

Detailed description

PRIMARY OBJECTIVES: l. Test the effect of the combination of vincristine (vincristine sulfate), cyclophosphamide, and topotecan (topotecan hydrochloride) (VTC) added to the standard 5-drug interval-compressed chemotherapy backbone on event-free and overall survival of children and young adults with Ewing sarcoma. CORRELATIVE SCIENCE OBJECTIVES: I. To evaluate initial volumetric tumor size as a prognostic factor for event free survival (EFS) in patients with localized Ewing tumors. II. To evaluate histologic response as a prognostic factor for EFS in patients with localized Ewing tumors. III. To continue evaluation of biologic markers both as related to prognosis and as eventual therapeutic targets via encouraging concurrent enrollment on a Ewing sarcoma specimen-collection study. IV. To evaluate imaging response by fluorodeoxyglucose (18F-FDG) positron emission tomography (PET) as a prognostic factor for EFS. V. To evaluate the effects of the type of local therapy on EFS and overall survival. VI. To evaluate the effect of local surgical margins in conjunction with histologic response on EFS in patients with localized Ewing tumors. VII. To evaluate the effect of local therapy modality (surgery, radiotherapy, or a combination) as well as the type of surgical reconstruction on musculoskeletal complications. OUTLINE: Patients are randomized to 1 of 2 treatment arms. ARM A: INDUCTION THERAPY: Patients receive vincristine sulfate intravenously (IV) on day 1 in weeks 1, 2, 5, 6, 9, and 10; doxorubicin hydrochloride IV over 1-15 minutes (or as per institutional policies up to 60-minutes) on days 1 and 2 and cyclophosphamide IV over 30-60 minutes on day 1 in weeks 1, 5, and 9; and ifosfamide IV over 1 hour and etoposide IV over 1-2 hours on days 1-5 in weeks 3, 7, and 11. CONSOLIDATION THERAPY: Patients receive vincristine sulfate IV on day 1 in weeks 1, 2, 7, 8, 9, 10, 13, 14, 17, 18, 21, and 22; doxorubicin hydrochloride IV on days 1 and 2 in weeks 1 and 9; cyclophosphamide IV over 30-60 minutes on day 1 in weeks 1, 7, 9, 13, 17, and 21; and ifosfamide IV over 1 hour and etoposide IV over 1-2 hours on days 1-5 in weeks 3, 5, 11, 15, and 19. Patients received Dexrazoxane with doxorubicin hydrochloride in weeks 1 and 9. ARM B: INDUCTION THERAPY: Patients receive vincristine sulfate IV on day 1 in weeks 1, 2, 5, 6, 9, 10, 11 and 12; topotecan hydrochloride IV over 30 minutes on days 1-5 in weeks 1 and 9; cyclophosphamide IV over 15-30 minutes on days 1-5 in weeks 1 and 9, and over 30-60 minutes on day 1 of weeks 5 and 11; ifosfamide and etoposide as in arm A; and doxorubicin hydrochloride IV on days 1 and 2 in weeks 5 and 11. CONSOLIDATION THERAPY: Patients receive vincristine sulfate IV on day 1 in weeks 1, 2, 7-10, 13-16, 19, and 20; topotecan hydrochloride IV over 30 minutes on days 1-5 in weeks 1, 7, and 15; cyclophosphamide IV over 15-60 minutes on days 1-5 in weeks 1, 7, and 15, and over 30-60 minutes on day 1 in weeks 9, 13, and 19; ifosfamide IV over 1 hour and etoposide IV over 1- 2 hours on days 1-5 in weeks 3, 5, 11, 17, and 21; and doxorubicin hydrochloride IV on days 1 and 2 in weeks 9,13, and 19. Patients received Dexrazoxane with doxorubicin hydrochloride in weeks 13 and 19. Patients could undergo surgery alone after recovery from week 12 chemotherapy if the primary tumor could be completely resected with negative margins and with reasonable functional result. Patients with inadequate margins after surgery were to receive radiotherapy in addition. Patients with lesions in surgically difficult sites such as the spine, skull, and periacetabular pelvis, patients with a poor response to induction chemotherapy, or those patients in whom surgery would result in unacceptable functional results were recommended to receive radiation and not surgery. Radiotherapy was to be administered during weeks 1-7 of consolidation therapy or after recovery from surgery for patients with positive margins. Patients who received planned pre-operative radiation and had positive surgical margins were to receive additional radiotherapy. After completion of study therapy, patients are followed up every 3 months for 3 years and then every 6 months for 2 years.

Interventions

DRUGCyclophosphamide

Given IV

DRUGDexrazoxane
DRUGDoxorubicin Hydrochloride

Given IV

DRUGEtoposide

Given IV

DRUGIfosfamide

Given IV

OTHERLaboratory Biomarker Analysis

Correlative studies

DRUGTopotecan Hydrochloride

Given IV

DRUGVincristine Sulfate

Given IV

Sponsors

Children's Oncology Group
Lead SponsorNETWORK
National Cancer Institute (NCI)
CollaboratorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
No minimum to 50 Years
Healthy volunteers
No

Inclusion criteria

* Patients with newly diagnosed, biopsy confirmed, extracranial, non-metastatic Ewing sarcoma or primitive neuroectodermal tumor (PNET) of bone or soft tissue are eligible for this study; note: * For the purpose of this study, chest wall tumors with ipsilateral pleural effusions, ipsilateral positive pleural fluid cytology or ipsilateral pleural based secondary tumor nodules will be considered localized disease * Patients with regional node involvement, based on clinical suspicion confirmed by pathologic documentation are considered to be non-metastatic * Patients with discontinuous osseous lesions within the same bone are considered to be non-metastatic * Tumors arising in the bony skull (extra-dural) are considered to be extracranial * Patient eligibility will be based on a diagnosis of Ewing sarcoma or PNET by institutional pathologist * No prior chemotherapy or radiation therapy is allowed; patients should only have had a biopsy of the primary tumor without an attempt at complete or partial resection; patients will still be eligible if unplanned excision was attempted or accomplished as long as adequate imaging was obtained prior to surgery * Creatinine clearance or radioisotope glomerular filtration rate (GFR) \>= 70mL/min/1.73 m\^2 or serum creatinine based on age/gender as follows: * 1 month to \< 6 months: 0.4 mg/dL * 6 months to \< 1 year: 0.5 mg/dL * 1 to \< 2 years: 0.6 mg/dL * 2 to \< 6 years: 0.8 mg/dL * 6 to \< 10 years: 1 mg/dL * 10 to \< 13 years: 1.2 mg/dL * 13 to \< 16 years: 1.5 mg/dL (male), 1.4 mg/dL (female) * \>= 16 years: 1.7 mg/dL (male), 1.4 mg/dL (female) * Total bilirubin \< 1.5 x upper limit of normal (ULN) for age * Serum glutamic oxaloacetic transaminase (SGOT) (aspartate aminotransferase \[AST\]) or serum glutamate pyruvate transaminase (SGPT) (alanine aminotransferase \[ALT\]) \< 2.5 x upper limit of normal (ULN) for age * Shortening fraction of \>= 27% by echocardiogram, or ejection fraction of \>= 50% by radionuclide angiogram

Exclusion criteria

* Patients must have no evidence of metastatic disease; metastatic disease are lesions which are discontinuous from the primary tumor, are not regional lymph nodes and do not share a body cavity with the primary tumor; if there is any doubt whether lesions are metastatic, a biopsy of those lesions should be taken * Skeletal lesions in adjacent bones (trans-articular) * Contralateral pleural effusion and contralateral pleural nodules * Distant lymph node involvement * Patients with pulmonary nodules are considered to have metastatic disease if the patient has: * Solitary nodule \> 0.5 cm or multiple nodules of \> 0.3 cm unless biopsied and negative for Ewing's * Biopsies of solitary nodule =\< 0.5 cm or multiple nodules =\< 0.3 cm are not required but if performed and positive indicate metastatic disease * Patients whose tumors arise in the dural and intra-dural soft tissues of the cranium and spine are not eligible * Patients with pathologic diagnoses other than Ewing sarcoma will be excluded * Patients diagnosed with Ewing Sarcoma as a second malignant neoplasm are not eligible if they have received chemotherapy or radiation for the treatment of their primary malignancy * Pregnant women will not be entered on this study; pregnancy tests must be obtained in female patients who are post-menarchal; lactating females may not participate unless they have agreed not to breastfeed their infants; males or females of reproductive potential may not participate unless they have agreed to use an effective contraceptive method for the duration of the study treatment * All patients and/or their parents or legal guardians must sign a written informed consent * All institutional, Food and Drug Administration (FDA), and National Cancer Institute (NCI) requirements for human studies must be met

Design outcomes

Primary

MeasureTime frameDescription
Event-Free Survival5 years after enrollmentEstimated 5-year EFS where EFS is calculated as the time from study enrollment to disease progression, disease relapse, occurrence of a second malignant neoplasm, death from any cause or last follow-up whichever occurs first. Kaplan-Meier method is used for estimation. Patients without an event are censored at last contact.

Countries

Australia, Canada, New Zealand, Puerto Rico, Saudi Arabia, United States

Contacts

PRINCIPAL_INVESTIGATORPatrick J Leavey

Children's Oncology Group

Participant flow

Participants by arm

ArmCount
Arm A (Combination Chemotherapy)
INDUCTION THERAPY: Patients receive vincristine sulfate IV on day 1 in weeks 1, 2, 5, 6, 9, and 10; doxorubicin hydrochloride IV over 1-15 minutes (or as per institutional policies up to 60-minutes) on days 1 and 2 and cyclophosphamide IV over 30-60 minutes on day 1 in weeks 1, 5, and 9; and ifosfamide IV over 1 hour and etoposide IV over 1-2 hours on days 1-5 in weeks 3, 7, and 11. CONSOLIDATION THERAPY: Patients receive vincristine sulfate IV on day 1 in weeks 1, 2, 7, 8, 9, 10, 13, 14, 17, 18, 21, and 22; doxorubicin hydrochloride IV on days 1 and 2 in weeks 1 and 9; cyclophosphamide IV over 30-60 minutes on day 1 in weeks 1, 7, 9, 13, 17, and 21; and ifosfamide IV over 1 hour and etoposide IV over 1-2 hours on days 1-5 in weeks 3, 5, 11, 15, and 19. Patients received Dexrazoxane with doxorubicin hydrochloride in weeks 1 and 9.
319
Arm B (Combination Chemotherapy, Topotecan Hydrochloride)
INDUCTION THERAPY: Patients receive vincristine sulfate IV on day 1 in weeks 1, 2, 5, 6, 9, 10, 11 and 12; topotecan hydrochloride IV over 30 minutes on days 1-5 in weeks 1 and 9; cyclophosphamide IV over 15-30 minutes on days 1-5 in weeks 1 and 9, and over 30-60 minutes on day 1 of weeks 5 and 11; ifosfamide and etoposide as in arm A; and doxorubicin hydrochloride IV on days 1 and 2 in weeks 5 and 11. CONSOLIDATION THERAPY: Patients receive vincristine sulfate IV on day 1 in weeks 1, 2, 7-10, 13-16, 19, and 20; topotecan hydrochloride IV over 30 minutes on days 1-5 in weeks 1, 7, and 15; cyclophosphamide IV over 15-60 minutes on days 1-5 in weeks 1, 7, and 15, and over 30-60 minutes on day 1 in weeks 9, 13, and 19; ifosfamide IV over 1 hour and etoposide IV over 1- 2 hours on days 1-5 in weeks 3, 5, 11, 17, and 21; and doxorubicin hydrochloride IV on days 1 and 2 in weeks 9,13, and 19. Patients received Dexrazoxane with doxorubicin hydrochloride in weeks 13 and 19.
323
Total642

Baseline characteristics

CharacteristicArm A (Combination Chemotherapy)TotalArm B (Combination Chemotherapy, Topotecan Hydrochloride)
Age, Categorical
<=18 years
272 Participants552 Participants280 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
47 Participants90 Participants43 Participants
Age, Continuous13 years13 years13 years
Ethnicity (NIH/OMB)
Hispanic or Latino
45 Participants89 Participants44 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
269 Participants544 Participants275 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
5 Participants9 Participants4 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants3 Participants3 Participants
Race (NIH/OMB)
Asian
11 Participants17 Participants6 Participants
Race (NIH/OMB)
Black or African American
10 Participants14 Participants4 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
3 Participants5 Participants2 Participants
Race (NIH/OMB)
Unknown or Not Reported
28 Participants56 Participants28 Participants
Race (NIH/OMB)
White
267 Participants547 Participants280 Participants
Region of Enrollment
Australia
17 Participants37 Participants20 Participants
Region of Enrollment
Canada
14 Participants27 Participants13 Participants
Region of Enrollment
New Zealand
2 Participants4 Participants2 Participants
Region of Enrollment
Saudi Arabia
0 Participants2 Participants2 Participants
Region of Enrollment
United States
286 Participants572 Participants286 Participants
Sex: Female, Male
Female
145 Participants275 Participants130 Participants
Sex: Female, Male
Male
174 Participants367 Participants193 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
51 / 30842 / 318
other
Total, other adverse events
105 / 30891 / 318
serious
Total, serious adverse events
8 / 30811 / 318

Outcome results

Primary

Event-Free Survival

Estimated 5-year EFS where EFS is calculated as the time from study enrollment to disease progression, disease relapse, occurrence of a second malignant neoplasm, death from any cause or last follow-up whichever occurs first. Kaplan-Meier method is used for estimation. Patients without an event are censored at last contact.

Time frame: 5 years after enrollment

Population: Only eligible patients are considered in the calculation of this outcome measure.

ArmMeasureValue (NUMBER)
Arm A (Combination Chemotherapy)Event-Free Survival77.64 Percent Probability
Arm B (Combination Chemotherapy, Topotecan Hydrochloride)Event-Free Survival78.79 Percent Probability
Other Pre-specified

Histological Response, in Terms of Event Free Survival After Local Control in Patients Who Received Local Control Therapy

Percent of viable tumor in the resected tumor specimen after the patient receives 2 cycles of induction chemotherapy. Patients will be classified into groups according to: (1) good risk - less than 10% viable tumor in the resection specimen; and (2) standard risk - 10% or more viable tumor in the resection specimen. Patients who receive radiation therapy to the primary tumor prior to tumor resection or whose tumor is resected prior to the start of systemic therapy are not evaluable for this outcome measure.

Time frame: At the end of INDUCTION THERAPY (84 days)

Other Pre-specified

Occurrence of Grade 2 or Higher Musculoskeletal Event (ME), or Surgery Required to Treat a Complication of Local Therapy

Any National Cancer Institute Common Terminology Criteria for Adverse Events version 4.0 ME of grade 2 or greater or ME of any grade where surgery is required to treat a complication of local therapy. Patients who do not complete induction chemotherapy or do not have any local control modality administered to the primary tumor site will not be evaluable for this outcome measure.

Time frame: 132 days after enrollment

Other Pre-specified

Overall Survival

Time from study enrollment to death or last patient contact.

Time frame: 5 years after enrollment

Other Pre-specified

Presence of Tumor at the Margin of Resection for Patients Who Have Surgery as the Only Local Control Modality

Patients will be categorized into the following groups: (1) tumor present at the margin of resection; and (2) no tumor present at the margin of resection. Patients who are not classified as having surgery as the only local control modality will not be evaluable for this outcome measure.

Time frame: 126 days after enrollment

Other Pre-specified

Radiological Response of Soft Tissue Component of Mass by Radiological Evaluation at the End of Induction Chemotherapy

Patients will be classified into two groups: (1) complete resolution of soft tissue mass; and (2) soft tissue mass present after induction chemotherapy. Patients who receive radiation therapy to the primary tumor prior to the completion of 2 cycles of induction, who do not receive 2 cycles of induction chemotherapy or who do not have soft tissue involvement detected at enrollment or at any time prior to the end of induction chemotherapy are not evaluable for this outcome measure.

Time frame: At the end of INDUCTION THERAPY (84 days)

Other Pre-specified

SUVmax as Determined by Positron Emission Tomography (PET)-Determined Response After Induction

Patients will be classified into two groups according to SUVmax as: (1) study population median or greater; and (2) less than the study population median. Patients who receive radiation therapy to the primary tumor prior to the completion of 2 cycles of induction or who do not receive 2 cycles of induction chemotherapy are not evaluable for this outcome measure.

Time frame: At the end of INDUCTION THERAPY (84 days)

Other Pre-specified

SUVmax as Determined by Positron Emission Tomography (PET)-Determined Response at Enrollment

Patients will be classified into two groups according to SUVmax as: (1) study population median or greater; and (2) less than the study population median.

Time frame: At study enrollment

Other Pre-specified

Tumor Volume in Milliliters (ml) at Enrollment

Patients will be classified into two groups: (1) tumor volume 200 ml or greater and (2) tumor volume less than 200 ml.

Time frame: At study enrollment

Other Pre-specified

Type of Local Control Modality Used for Removal of Primary Tumor Site at Any Time up to the End of the First 6 Cycles of Consolidation Chemotherapy

Patients will be categorized into the following groups: (1) surgery as the local control modality; (2) radiation therapy as the local control modality; (3) surgery and radiation therapy as the local control modality; and (4) no local control modality administered to the primary tumor site. Patients who do not complete induction chemotherapy will not be evaluable for this outcome measure.

Time frame: 126 days after enrollment

Source: ClinicalTrials.gov · Data processed: Mar 17, 2026