Epithelioid Sarcoma Natural History Study

Study Overview
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Brief Summary
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This study is a multi-center, non-interventional retrospective medical records review. The study will involve identification of medical records of patients with confirmed locally advanced unresectable or metastatic ES, who initiated systemic therapy between January 1, 2000 and December 31, 2017. Data for the chart review will be extracted retrospectively from eligible subjects' charts (electronic or paper). Information on prior surgical treatment and neoadjuvant/adjuvant therapies for ES will also be collected for ineligible subjects with a locally advanced or metastatic ES diagnosis who did not initiated systemic therapy. Data collected will be anonymized by the investigators and will not be traceable back to individual subjects by the sponsor (i.e., no protected health information [PHI] will be collected).

Detailed Description
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The sampling period will span from January 1, 2000 to December 31, 2017. As the chart abstraction dates may be different across institutions due to contracting and other logistical issues, to avoid seeing biased outcomes that may be related to this type of heterogeneity, a consistent study end date will be imposed for all patients when conducting the analysis. Information before this study end date will be analyzed and used to conduct the analysis.

Official Title
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Epithelioid Sarcoma Natural History Study

Conditions
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Epithelioid Sarcoma

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Diagnosed with histologically confirmed, locally advanced unresectable or metastatic Epithelioid Sarcoma (ES) requiring systemic therapy during between January 1, 2000 and December 31, 2017. The date of the confirmed locally advanced unresectable or metastatic ES diagnosis is designated as the index date. Patients may have a date of ES diagnosis at an earlier stage prior to 2000 and still be eligible for the study Initiation of treatment with any systemic anti-cancer therapy for the treatment of their locally advanced unresectable or metastatic ES between January 1, 2000 and December 31, 2017 At least 10 years of age at the index date

Ages Eligible for Study
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Minimum Age: 10 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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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Real-word overall response rate (rwORR) | Proportion of patients who have a documented radiological scan showing clinician-assessed complete response or less-than-complete response, of any duration, defined for each regimen and by line | Initiation of treatment with any systemic anti-cancer therapy for the treatment between January 1, 2000 and December 31, 2017 to treatment failure | 
| Real-world duration of response (rwDOR) | Duration of time between the first radiological scan showing documented tumor response (any time of response excluding SD) to first noted disease progression, or treatment discontinuation if no progression occurred. This is defined for each line of therapy and by regimen. | Initiation of treatment with any systemic anti-cancer therapy for the treatment between January 1, 2000 and December 31, 2017 to treatment failure | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Time from treatment initiation to treatment discontinuation |  | Initiation of treatment with any systemic anti-cancer therapy for the treatment between January 1, 2000 and December 31, 2017 to treatment failure | 
| Time from treatment initiation to treatment failure | Treatment failure is defined as discontinuation of treatment for any reason, including disease progression, treatment toxicity, and death | Initiation of treatment with any systemic anti-cancer therapy for the treatment between January 1, 2000 and December 31, 2017 to treatment failure | 
| Real-world disease control rate (rwDCR) | Proportion of patients who have documented radiological scans showing clinician-assessed complete response or less-than-complete response, or stable disease lasting at least 32 weeks | Initiation of treatment with any systemic anti-cancer therapy for the treatment between January 1, 2000 and December 31, 2017 to treatment failure | 
| Overall survival (OS) |  | Initiation of treatment with any systemic anti-cancer therapy for the treatment between January 1, 2000 and December 31, 2017 to death | 
| Real-world time to tumor progression (rwTTP) |  | Initiation of treatment with any systemic anti-cancer therapy for the treatment between January 1, 2000 and December 31, 2017 to tumor progression |