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Updated: May 31, 2026

Pooled CRISPR-Based Genetic Screens in Mammalian Cells
Published on: September 4, 2019
Orobas: A computational approach for scoring and analysis of quantitative chemical-genetic interactions from
Arshia Z Hassan1, Xiang Zhang1, Henry N Ward2
1Department of Computer Science and Engineering, University of Minnesota, Minneapolis, MN 55455, USA.
Abstract:
We present Orobas, a computational approach for transforming raw read count data from CRISPR-Cas9 chemical-genetic screens into quantitative interaction scores. We describe steps for computing differential interaction scores with statistical tests that account for multiple CRISPR guides per gene. We then outline approaches for post-processing differential log2-fold-change scores across multiple screens, incorporating normalization to reduce technical artifacts and correct batch effects.
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