The pan-cancer pathological regulatory landscape

Area of Science:

• Genomics
• Molecular Biology
• Cancer Research

Background:

• Gene expression dysregulation is central to cancer.
• Identifying disease-driving regulators is key for targeted therapies and personalized medicine.
• Transcription factors (TFs) are critical regulators of gene expression.

Purpose of the Study:

• To comprehensively catalog altered transcription factor (TF) activity in a large cohort of cancer samples.
• To identify TFs associated with patient survival and therapeutic potential.
• To evaluate the utility of TF activity analysis for personalized medicine.

Main Methods:

• Application of Transcription Factor Target Enrichment Analysis (TFEA) to quantify TF activity.
• Analysis of 5607 cancer samples across eleven distinct cancer types.
• Correlation of TF activity with patient survival data.

Main Results:

• First comprehensive catalog of altered TF activities in cancer.
• Identification of numerous TFs significantly associated with patient survival.
• Discovery of TFs with prognostic importance despite minimal changes from normal tissue.
• Demonstration of personalized TF activity estimation for individual patients.

Conclusions:

• Altered TF activity is a significant feature across diverse cancer types.
• TF activity analysis provides novel insights into cancer mechanisms and patient prognosis.
• This approach offers potential for identifying new therapeutic targets and advancing personalized cancer care.