Survival outcome assessment is challenging and inherently associated with multiple clinical factors (e.g., imaging and genomics biomarkers) in cancer. Enabling multimodal analytics promises to reveal novel predictive patterns of patient outcomes. In this study, we propose a multimodal transformer (PathOmics) integrating pathology and genomics insights into colon-related cancer survival prediction. We emphasize the unsupervised pretraining to capture the intrinsic interaction between tissue microenvironments in gigapixel whole slide images (WSIs) and a wide range of genomics data (e.g., mRNA-sequence, copy number variant, and methylation). After the multimodal knowledge aggregation in pretraining, our task-specific model finetuning could expand the scope of data utility applicable to both multi- and single-modal data (e.g., image- or genomics-only). We evaluate our approach on both TCGA colon and rectum cancer cohorts, showing that the proposed approach is competitive and outperforms state-of-the-art studies. Finally, our approach is desirable to utilize the limited number of finetuned samples towards data-efficient analytics for survival outcome prediction. The code is available at https://github.com/Cassie07/PathOmics.

提出了一种多模态变压器模型 (PathOmics)，将病理学和基因组学洞察力结合到结直肠相关癌症存活预测中，通过无监督预训练来捕捉吉格像素全幅图像和各种基因组数据之间的固有互动，并且在预训练的多模态知识聚合后，我们的任务特定模型微调可以扩大适用于多模态和单模态数据（如仅图像或基因组）的数据效用范围，验证结果表明我们的方法在TCGA结直肠癌队列上是具有竞争力的并且胜过现有研究。

病理与基因组学多模态变压器用于生存情况预测