HEMERA: A Human-Explainable Transformer Model for Estimating Lung Cancer Risk using GWAS Data

• URL: http://arxiv.org/abs/2510.07477v1
• Date: Wed, 08 Oct 2025 19:23:32 GMT
• Title: HEMERA: A Human-Explainable Transformer Model for Estimating Lung Cancer Risk using GWAS Data
• Abstract summary: Lung cancer (LC) is the third most common cancer and the leading cause of cancer deaths in the US.<n>Genetic biomarkers identified through genome-wide association studies (GWAS) are promising tools for assessing LC risk.<n>We introduce HEMERA, a new framework that applies explainable transformer-based deep learning to GWAS data of single nucleotide polymorphisms (SNPs) for predicting LC risk.
• Score: 5.67448323642085
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Lung cancer (LC) is the third most common cancer and the leading cause of cancer deaths in the US. Although smoking is the primary risk factor, the occurrence of LC in never-smokers and familial aggregation studies highlight a genetic component. Genetic biomarkers identified through genome-wide association studies (GWAS) are promising tools for assessing LC risk. We introduce HEMERA (Human-Explainable Transformer Model for Estimating Lung Cancer Risk using GWAS Data), a new framework that applies explainable transformer-based deep learning to GWAS data of single nucleotide polymorphisms (SNPs) for predicting LC risk. Unlike prior approaches, HEMERA directly processes raw genotype data without clinical covariates, introducing additive positional encodings, neural genotype embeddings, and refined variant filtering. A post hoc explainability module based on Layer-wise Integrated Gradients enables attribution of model predictions to specific SNPs, aligning strongly with known LC risk loci. Trained on data from 27,254 Million Veteran Program participants, HEMERA achieved >99% AUC (area under receiver characteristics) score. These findings support transparent, hypothesis-generating models for personalized LC risk assessment and early intervention.

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