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Deciphering Genotype-Phenotype Connections: Leveraging Pangenomes And Comprehensive Genome Variation, Flavia Villani Apr 2025

Deciphering Genotype-Phenotype Connections: Leveraging Pangenomes And Comprehensive Genome Variation, Flavia Villani

Alternative Theses and Dissertations (AETDs)

My thesis explores the application of advanced techniques for discovery of genetic variation and pangenomic approaches to enhance our understanding of genetic variation and genotype-phenotype relationships in two key model organisms: the HXB/BXH recombinant inbred rat family and the BXD mouse family. Through deep sequencing and innovative computational methods, I constructed com- prehensive pangenome graphs that captured genetic diversity beyond what is accessible through conventional single-reference approaches. In the HXB rat family, I identified approximately 200 million base pairs of sequence absent from the reference genome and discovered novel variants associated with glucose metabolism and chromogranin expression through phenome-wide association …


The Role Of Epigenetic Aberrations In The Cold Tumor Phenotype And Inflammatory Signaling In High-Risk Neuroblastoma, Pamela Morgan Watson Dec 2024

The Role Of Epigenetic Aberrations In The Cold Tumor Phenotype And Inflammatory Signaling In High-Risk Neuroblastoma, Pamela Morgan Watson

Alternative Theses and Dissertations (AETDs)

Neuroblastoma (NB) is a highly aggressive, heterogeneous disease that arises from the sympathetic nervous system (SNS) and originates from neural crest cells (NCCs) (1). NB is the most common extracranial cancer in pediatric accounts for 15% of pediatric cancer deaths (2). This high mortality rate is the result of the metastatic, immune evasive, and treatment resistant characteristics of the disease (3). It has been proposed that NB arises from blocks in differentiation during development, resulting in a mixture of two distinct cell types within the tumor: mesenchymal and adrenergic (Figure 1.1) (4,5). The adrenergic cell type is more differentiated, and …