DGSS: A Dynamic Interaction Graph Neural Network with Specific Substructure Awareness for Drug Synergy Prediction
Bibliographic record
Abstract
Combination therapy presents a transformative approach to treating complex diseases such as cancer by mitigating toxicity and resistance challenges inherent to monotherapy. A critical gap in current computational methods, however, lies in their inability to model cell-specific drug responses and dynamic drug-cell interactions, which are key factors in accurately predicting synergistic drug pairs. To address this, we propose DGSS, a novel Dynamic Interaction Graph Neural Network with Cell-Specific Drug Substructure Awareness, designed to explicitly capture two pivotal aspects: (1) drug substructures that drive efficacy in specific cellular environments, and (2) dynamic, context-dependent interactions between drugs and cell lines. Our framework introduces two technical innovations: a hierarchical attention mechanism that identifies cell-line-specific drug substructures by correlating molecular subgraphs with genomic features, and a dynamic graph network that models evolving cell-line states during drug exposure. Extensive experiments under three data partitioning strategies across 12 datasets demonstrate DGSS's robustness, consistently outperforming all state-of-the-art baseline models. On the Loewe Synergy dataset, the model achieved AUROC and AUPRC of 96.0% and 85.5%, respectively, and exhibited good stability. By bridging molecular substructure dynamics with cellular context, DGSS advances precision in synergy prediction, offering a data-driven framework to optimize combination therapies in personalized oncology.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.002 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".