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Genetics

OCOO-T : A Simple and Scalable Virtual Cell Model for Transcriptional Perturbation Response Prediction

Danning Jiang, Zheming An, Yalong Zhao, Lipeng Lai

Featured June 14, 2026

Original Paper

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Simply

OCOO-T predicts how cells change after drug treatments by using a Transformer to gradually clean up noisy gene data, effectively simulating complex biological responses without needing complicated extra components.

In depth
The paper introduces OCOO-T, a minimalist framework that treats transcriptional perturbation response prediction as a continuous-time denoising process. By utilizing a plain Transformer backbone, the model directly operates on continuous gene expression profiles, bypassing the need for complex auxiliary autoencoders or latent space bottlenecks. The architecture incorporates adaptive layer normalization and a patching mechanism to efficiently handle long-range gene dependencies and diverse cellular contexts.

Key Takeaways

  • 1
    The model achieves state-of-the-art performance by formulating perturbation prediction as a conditional flow matching task.
  • 2
    A novel patching and depatching strategy enables the Transformer to scale to full-transcriptome resolution without quadratic complexity.
  • 3
    Architectural simplicity, specifically the use of a plain Transformer backbone, proves sufficient for capturing complex gene regulatory dynamics.

Conceptual Flow

HIGH LEVEL
1
Methodology

The model learns to turn random noise into a realistic gene expression profile by following a path guided by the specific drug treatment.

Random Noise
Drug Info
Cell Type
Denoising Transformer
Predicted Gene Profile
2
Results

The model accurately predicts how genes change across different experiments, outperforming older methods that used more complex designs.

Standard Methods

OCOO-T

Compare Accuracy

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