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Andrew Stirn
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app.py
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@@ -98,7 +98,7 @@ if __name__ == '__main__':
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st.session_state.off_target = None
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# title and documentation
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st.markdown(Path('tiger.md').read_text())
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st.divider()
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# mode selection
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st.session_state.off_target = None
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# title and documentation
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st.markdown(Path('tiger.md').read_text(), unsafe_allow_html=True)
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st.divider()
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# mode selection
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tiger.md
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## TIGER Tool for Cas13 Efficacy Prediction
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Welcome to TIGER!
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TIGER's ability to make accurate on- and off-target predictions enables users to 1) design highly effective gRNAs and 2) precisely modulate transcript expression by engineered gRNA-target mismatches.
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If you use TIGER, please consider citing
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> Wessels, H.-H
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Please note that this precompiled, online tool differs from the manuscript slightly.
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First, this version of TIGER predicts using just target and guide sequence (see Figure 3c). Second, we map TIGER's predictions to the unit interval to make estimates more interpretable:
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A Guide Score near 0 denotes no/minimal activity (i.e. desirable for off-
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This transformation is monotonic and therefore preserves Spearman, AUROC, and AUPRC performance.
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These estimates (transformations of log-fold-change predictions from TIGER) appear in the
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### Using the TIGER Online Tool
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2) Uploading a FASTA file that can contain one or more transcripts. Each transcript **must** have a unique ID.
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The tool has three run modes:
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The tool uses
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### Future Development Plans
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- Incorporate non-scalar features (target accessibility, hybridization energies, etc...)
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To report bugs or to request additional features, please click the "Community" button in the top right corner of this screen and start a new discussion.
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Alternatively, please email [Andrew Stirn](mailto:andrew.stirn@cs.columbia.edu).
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## TIGER Online Tool for Cas13 Efficacy Prediction
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Welcome to TIGER!
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This online tool accompanies our recent study from the labs of [David Knowles](https://daklab.github.io/) and [Neville Sanjana](http://sanjanalab.org/).
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TIGER's ability to make accurate on- and off-target predictions enables users to 1) design highly effective gRNAs and 2) precisely modulate transcript expression by engineered gRNA-target mismatches.
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If you use the TIGER Online Tool in your study, please consider citing:
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> **[Prediction of on-target and off-target activity of CRISPR–Cas13d guide RNAs using deep learning](http://sanjanalab.org/reprints/WesselsStirn_NBT_2023.pdf).** Wessels, H.-H.<sup>\*</sup>, Stirn, A.<sup>\*</sup>, Méndez-Mancilla, A., Kim, E. J., Hart, S. K., Knowles, D. A.<sup>#</sup>, & Sanjana, N. E.<sup>#</sup> *Nature Biotechnology* (2023). [https://doi.org/10.1038/s41587-023-01830-8](https://doi.org/10.1038/s41587-023-01830-8)
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Please note that this precompiled, online tool differs from the manuscript slightly.
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First, this version of TIGER predicts using just target and guide sequence (see [Figure 3c](http://sanjanalab.org/reprints/WesselsStirn_NBT_2023.pdf)). Second, we map TIGER's predictions to the unit interval (0,1) to make estimates more interpretable: A `Guide Score` close to 1 corresponds to high gRNA activity (i.e. desirable for on-target guides).
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A `Guide Score` near 0 denotes no/minimal activity (i.e. desirable for predicted off-targets to minimize the activity of these gRNAs on unintended targets).
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This transformation is monotonic and therefore preserves Spearman, AUROC, and AUPRC performance.
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These estimates (transformations of log-fold-change predictions from TIGER) appear in the `Guide Score` column of this online tool’s output.
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### Using the TIGER Online Tool
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2) Uploading a FASTA file that can contain one or more transcripts. Each transcript **must** have a unique ID.
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The tool has three run modes:
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1) Report all on-target gRNAs for each provided transcript.
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2) Report the top 10 most active, on-target gRNAs for each provided transcript. This mode allows for the optional identification of off-target effects. For off-target avoidance, please note that higher a `Guide Score` (closer to 1) corresponds to *more* likely off-target effects.
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3) Report the top 10 most active, on-target gRNAs for each provided transcript and their titration candidates (all possible single mismatches). A higher `Guide Score` (closer to 1) corresponds to greater transcript knockdown.
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The tool uses Gencode v19 (protein-coding and non-coding RNAs) to identify potential off-target transcripts.
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Due to computational limitations, the online tool only supports off-target predictions for the top 10 most active, on-target gRNAs per transcript.
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### Future Development Plans
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- Incorporate non-scalar features (target accessibility, hybridization energies, etc...)
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To report bugs or to request additional features, please click the "Community" button in the top right corner of this screen and start a new discussion.
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Alternatively, please email [Andrew Stirn](mailto:andrew.stirn@cs.columbia.edu).
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#### Version
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You are using version 1.0 of this tool.
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We will increment the major number when a change causes a difference in predictions (e.g. retraining the model).
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We will otherwise increment the minor number (e.g. changes to the user interface, speed improvements, etc...).
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