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DREAM and Sage Bionetworks tap the wisdom of the crowd to impact breast cancer prognosis
Date:4/17/2013

ter reduction of suffering due to disease. This seems to me like an ethical imperative.

The goal of the BCC was to build a computational model that accurately predicts breast cancer survival. To do this, participants of the Challenge used genomic and clinical information from 2000 women diagnosed with breast cancer (the METABRIC data set). They accessed this data on Synapse, Sage Bionetworks open compute platform for data sharing and analysis: Google donated cloud-based standardized virtual machines that each participant used to train their models against the data. Individual participants and/or teams submitted their computational models to Synapse as open source code made viewable to all: their models were assessed against a hidden dataset and their scores were reported on a real-time leaderboard. The combination of immediate feedback and code-sharing allowed participants to improve their leaderboard ranking by adjusting their own models or by borrowing the code of others to forge new models.

Throughout the July-October 2012 model-training phase, a crowd of 350 players from 35 countries across the globe joined the Challenge and submitted a total of 1700 computational models for scoring. The winning model was determined by scoring the predictive accuracy of players models against a newly generated data set: for this, the Avon Foundation For Women funded the generation of gene expression and copy number data as well as collection of corresponding clinical information from 180 breast cancer patients. Finally, the BCC organizers recognized that the basic science community might be most energized to participate if the Challenge prize were not money but the invitation to publish an article about the winning model in a top tier journal. The editors of STM saw the unique opportunity to run their own experiment on how to structure the peer-review process for competition-based crowdsourcing studies such as the BCC. Todays issue of STM featur
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Contact: Regina Warmoth
warmoth@sagebase.org
206-667-2102
Sage Bionetworks
Source:Eurekalert

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