Pathway-level somatic mutation burden reflects diffuse genomic accumulation rather than selective transcriptional disruption in ovarian serous carcinoma: Evidence from bulk, spatial, and multi-region genomic analyses

The authors investigate whether the tumor mutation burden (TMB) in ovarian serous carcinoma is associated with selective transcriptional pathway disruption or reflects a more diffuse genomic accumulation. Their analyses reveal no significant associations between TMB and pathway activity, except for chromatin remodeling, which showed a correlation with increased TMB. These findings highlight the need for spatially resolved analyses to better understand the relationship between mutation burden and pathway biology in high-grade serous carcinoma.