A Trial of TH-302 in Combination With Doxorubicin Versus Doxorubicin Alone to Treat Patients With Locally Advanced Unresectable or Metastatic Soft Tissue Sarcoma

Study Overview
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Brief Summary
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The purpose of this study is to determine whether TH-302 in combination with Doxorubicin is safe and effective in the treatment of Locally Advanced Unresectable or Metastatic Soft Tissue Sarcoma.

Detailed Description
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TH-302 is designed to target the hypoxic regions of tumors which are generally located distant from tumor vessels. Doxorubicin has poor tissue penetration and targets the regions of tumors that are located in proximity to the tumor vessels. The presence of hypoxia in solid tumors is associated with a more malignant phenotype and resistance to chemotherapy. The hypoxia-activated prodrug, TH-302, is designed to selectively target the hypoxic microenvironment. Soft tissue sarcomas have evidence supporting the presence of hypoxia based on pO2 histography, F-MISO and gene expression profiling. There is an absence of therapeutic options for subjects with soft tissue sarcoma. Combining doxorubicin with TH-302 may enable the targeting of both the normoxic and hypoxic regions of soft tissue sarcoma.

Official Title
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A Randomized Phase 3, Multicenter, Open-Label Study Comparing TH-302 in Combination With Doxorubicin vs. Doxorubicin Alone in Subjects With Locally Advanced Unresectable or Metastatic Soft Tissue Sarcoma

Conditions
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Soft Tissue Sarcoma

Intervention / Treatment
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* Drug: TH-302 in Combination with Doxorubicin
* Drug: Doxorubicin


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male or female ≥ 15 years of age Ability to understand the purposes and risks of the study and has signed or, if appropriate, the subject's parent or legal guardian has signed a written informed consent form approved by the investigator's IRB/Ethics Committee Pathologically confirmed diagnosis of soft tissue sarcoma of the following histopathologic types: Synovial sarcoma High grade fibrosarcoma Undifferentiated sarcoma; sarcoma not otherwise specified (NOS) Liposarcoma Leiomyosarcoma (excluding GIST) Angiosarcoma (excluding Kaposi's sarcoma) Malignant peripheral nerve sheath tumor Pleomorphic Rhabdomyosarcoma Myxofibrosarcoma Epithelioid sarcoma Undifferentiated pleomorphic sarcoma/malignant fibrous histiocytoma (MFH) (including pleomorphic, giant cell, myxoid and inflammatory forms) Locally advanced unresectable or metastatic disease with no standard curative therapy available and for whom treatment with single agent doxorubicin is considered appropriate. Recovered from reversible toxicities of prior therapy Measurable disease by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 Life expectancy of at least 3 months Acceptable liver, renal, hematological and cardiac function All women of childbearing potential must have a negative serum pregnancy test and all subjects must agree to use effective means of contraception Exclusion Criteria: Prior systemic therapy for advanced or metastatic disease (neoadjuvant therapy followed by surgical resection and adjuvant therapy permitted). Palliative radiotherapy to non-target lesions is allowed if completed at least two weeks prior to study entry Low grade tumors according to standard grading systems Prior therapy with ifosfamide or cyclophosphamide or other nitrogen mustards Prior therapy with an anthracycline or anthracenedione Prior mediastinal/cardiac radiotherapy Current use of drugs with known cardiotoxicity or known interactions with doxorubicin Anti-cancer treatment with radiation therapy, neoadjuvant or adjuvant chemotherapy, targeted therapies, immunotherapy, hormones or other antitumor therapies within 4 weeks prior to study entry (6 weeks for nitrosoureas or mitomycin C). Palliative radiotherapy to non-target lesions is allowed, is completed at least two weeks prior to study entry. Significant cardiac dysfunction precluding treatment with doxorubicin Seizure disorders requiring anticonvulsant therapy unless seizure-free for the last year Known brain metastases (unless previously treated and well controlled for a period of ≥ 3 months) Previously treated malignancies, except for adequately treated non-melanoma skin cancer, in situ cancer, or other cancer from which the subject has been disease-free for at least 5 years Severe chronic obstructive or other pulmonary disease with hypoxemia or in the opinion of the investigator any physiological state likely to cause normal tissue hypoxia Major surgery, other than diagnostic surgery, within 4 weeks prior to Day 1, without complete recovery Active, uncontrolled bacterial, viral, or fungal infections, requiring systemic therapy Prior therapy with a hypoxic cytotoxin Subjects who participated in an investigational drug or device study within 28 days prior to study entry Known infection with HIV, hepatitis B, or hepatitis C Subjects who have exhibited allergic reactions to a structural compound similar to TH-302,doxorubicin or their excipients Females who are pregnant or breast-feeding Concomitant disease or condition that could interfere with the conduct of the study, or that would, in the opinion of the investigator, pose an unacceptable risk to the subject in this study Unwillingness or inability to comply with the study protocol for any reason

Ages Eligible for Study
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Minimum Age: 15 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: TH-302 in Combination with Doxorubicin<br> | Drug: TH-302 in Combination with Doxorubicin<br>* 300 mg/m2 of TH-302 will be administered by IV infusion over 30-60 minutes on Days 1 and 8 of a 21-day cycle. Doxorubicin may be delivered as a bolus administration or as a continuous infusion administration; administration schedule must be specified prior to enrollment. Doxorubicin bolus administration: 75 mg/m2 administered by bolus injection starting on Day 1 of a 21-day cycle. Doxorubicin continuous administration: 75 mg/m2 administered by continuous IV infusion over 48-96 hours starting on Day 1 of a 21-day cycle. Doxorubicin administration will start between 2 to 4 hours after completion of the TH-302 infusion when used in combination with TH-302.<br>|
| Active Comparator: Doxorubicin<br> | Drug: Doxorubicin<br>* Doxorubicin may be delivered as a bolus administration or as a continuous infusion administration; administration schedule must be specified prior to enrollment. Doxorubicin bolus administration: 75 mg/m2 administered by bolus injection starting on Day 1 of a 21-day cycle. Doxorubicin continuous administration: 75 mg/m2 administered by continuous IV infusion over 48-96 hours starting on Day 1 of a 21-day cycle.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Efficacy of TH-302 in combination with doxorubicin | Efficacy will be determined by overall survival in subjects with locally advanced unresectable or metastatic soft tissue sarcoma previously untreated with chemotherapy compared with doxorubicin alone | 2 years | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Safety of TH-302 in combination with doxorubicin in subjects with locally advanced unresectable or metastatic soft tissue sarcoma compared with doxorubicin alone | To investigate the pharmacokinetics of TH-302, Br-IPM, doxorubicin, and doxorubicinol in plasma | 2 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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TH-302, TH-CR-406, SARC021, Locally Advanced Soft Tissue Sarcoma, Metastatic Soft Tissue Sarcoma, Sarcoma, Doxorubicin, Evofosfamide