MoXGATE: Modality-aware cross-attention for multi-omic gastrointestinal cancer sub-type classification

• URL: http://arxiv.org/abs/2506.06980v1
• Date: Sun, 08 Jun 2025 03:42:23 GMT
• Title: MoXGATE: Modality-aware cross-attention for multi-omic gastrointestinal cancer sub-type classification
• Authors: Sajib Acharjee Dip, Uddip Acharjee Shuvo, Dipanwita Mallick, Abrar Rahman Abir, Liqing Zhang,
• Abstract summary: MoXGATE is a novel deep-learning framework that captures inter-modality dependencies, ensuring robust and interpretable integration.<n>We demonstrate that MoXGATE outperforms existing methods, achieving 95% classification accuracy.<n>Key contributions include (1) a cross-attention-based multi-omic integration framework, (2) modality-weighted fusion for enhanced interpretability, and (3) application of focal loss to mitigate data imbalance.
• Score: 7.7134821078470965
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Cancer subtype classification is crucial for personalized treatment and prognostic assessment. However, effectively integrating multi-omic data remains challenging due to the heterogeneous nature of genomic, epigenomic, and transcriptomic features. In this work, we propose Modality-Aware Cross-Attention MoXGATE, a novel deep-learning framework that leverages cross-attention and learnable modality weights to enhance feature fusion across multiple omics sources. Our approach effectively captures inter-modality dependencies, ensuring robust and interpretable integration. Through experiments on Gastrointestinal Adenocarcinoma (GIAC) and Breast Cancer (BRCA) datasets from TCGA, we demonstrate that MoXGATE outperforms existing methods, achieving 95\% classification accuracy. Ablation studies validate the effectiveness of cross-attention over simple concatenation and highlight the importance of different omics modalities. Moreover, our model generalizes well to unseen cancer types e.g., breast cancer, underscoring its adaptability. Key contributions include (1) a cross-attention-based multi-omic integration framework, (2) modality-weighted fusion for enhanced interpretability, (3) application of focal loss to mitigate data imbalance, and (4) validation across multiple cancer subtypes. Our results indicate that MoXGATE is a promising approach for multi-omic cancer subtype classification, offering improved performance and biological generalizability.

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