Spatial Transcriptomics on a Diverse Pancreatic Cancer Cohort Reveals Race-Related Differences in Tumor Subtypes and Immune Microenvironments.

Spatial transcriptomics reveals that Black African American PDAC tumors have a higher prevalence of intermediate/hybrid molecular subtypes and distinct immune microenvironments compared to Non-African American tumors.

• Why it matters: Understanding molecular and immune differences in PDAC across racial groups can shed light on health disparities and inform personalized treatment strategies, addressing a critical gap in cancer research.
• What they did: The study used whole exome sequencing, spatial transcriptomics, and spatial proteomics to compare tumor subtypes and immune cell interactions in BAA versus NAA PDAC patients, analyzing 20% more BAA cases.
• The result: Findings show BAA tumors have fewer classical subtype cells, more intermediate/hybrid subtypes, larger tertiary lymphoid structures, increased B cell, and reduced myeloid cell interactions, suggesting molecular bases for disparities in tumor behavior and immune response.