A Real World Study to Evaluate Effectiveness of Avastin (Bevacizumab) for First Line Treatment of Patients With Metastatic Colorectal Cancer and Known KRAS Status

Study Overview
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Brief Summary
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This non-interventional study will meta-analyze overall survival outcomes among the participants with metastatic colorectal cancer (mCRC) with available V-Ki-ras2 Kirsten rat sarcoma viral oncogene homolog (KRAS) status, who received firstline treatment with bevacizumab containing treatment regimen in routine clinical practice. The study leveraging secondary data from existing cohorts in the United Stats of America (USA), Germany, Australia, and Denmark.

Official Title
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A Non-Interventional Multi-country Study to Evaluate the Real World Effectiveness of Avastin (Bevacizumab) for First Line Treatment of Patients With Metastatic Colorectal Cancer and Known KRAS Status

Conditions
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Colorectal Cancer

Intervention / Treatment
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* Drug: Anti-EGFR-Containing Regimen
* Drug: Bevacizumab-containing regimen
* Drug: Chemotherapy


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Participants with metstatic colorectal cancer (mCRC) diagnosed at any point prior to March 2014 (United States [US] - Vector Oncology Protocol Sponsored by US Roche Pharma Medical Affairs), diagnosed between September 2006 and March 2015 (Germany - Tumourregister Kolorektales Karzinom [TKK] Registry Study Supported by German Roche Pharma Affiliate), diagnosed between September 2009 and December 2014 (Australia - Treatment of Recurrent and Advanced Colorectal Cancer [TRACC] Registry Supported by Roche Pharma Australia), diagnosed between 2009 and 2013 (Denmark - Roche Diagnostic Sponsored Study and Aarhus University Hospital, Department of Clinical Epidemiology) Participants have been treated in first line with bevacizumab or Anti-EGFR treatment regimen or chemotherapy alone Participants have to have available data on overall survival (OS), KRAS testing status, and left/right tumor location status Exclusion Criteria: N/A

Ages Eligible for Study
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Minimum Age: 18 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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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| mCRC Participants<br>Data of mCRC participants who received first-line treatment with bevacizumab-containing regimen or with chemotherapy alone and had KRAS-mutant status and mCRC participants who received first-line treatment with bevacizumab-containing regimen or an anti-epidermal growth factor receptor (EGFR)-containing regimen and had KRAS wild type status, will be collected retrospectively. | Drug: Anti-EGFR-Containing Regimen<br>* Study protocol does not specify any particular chemotherapy regimen. The data will be collected retrospectively.<br>Drug: Bevacizumab-containing regimen<br>* Study protocol does not specify any particular bevacizumab containing regimen. The data will be collected retrospectively.<br>* Other names: Avastin;Drug: Chemotherapy<br>* Study protocol does not specify any particular chemotherapy regimen. The data will be collected retrospectively.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Overall Survival (OS) in Participants With mCRC and a Documented KRAS Mutation who Received Bevacizumab-Containing Treatment or Chemotherapy Alone in Routine Clinical Practice |  | start of first-line therapy to death from any cause, or to last date known that participant is alive (retrospective data collection over approximately 9 years) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| OS in Participants With mCRC and a Documented KRAS Wild Type Status who Received Bevacizumab-Containing Treatment or Anti-EGFR Treatment in Routine Clinical Practice |  | start of first-line therapy to death from any cause, or to last date known that participant is alive (retrospective data collection over approximately 9 years) |