NetTCR-2.0 server predicts binding probability between a T-cell receptor CDR3 protein sequence and a MHC-I peptide binding to HLA-A*02:01
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Prediction of T cell receptor (TCR) interactions with MHC-peptide complexes remains highly challenging. This challenge is primarily due to three dominant factors: data accuracy, data scarceness, and problem complexity.
Here, we showcase that "shallow" convolutional neural network (CNN) architectures are adequate to deal with the problem complexity imposed by the length variations of TCRs.
We demonstrate that current public bulk CDR3β-pMHC binding data overall is of low quality and that the development of accurate prediction models is contingent on paired α/β TCR sequence data corresponding to at least 150 distinct pairs for each investigated pMHC.
In comparison, models trained on CDR3α or CDR3β data demonstrated a variable and pMHC specific relative performance drop. Together these findings support that T cell specificity is predictable given the availability of accurate and sufficient paired TCR sequence data.
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