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Articles 1 - 6 of 6
Full-Text Articles in Analytical, Diagnostic and Therapeutic Techniques and Equipment
Impact Of Personal, Familial, And Socioeconomic Factors On The Return Of Remotely Collected Samples For Genetic Testing, Jordan Zeiger
Impact Of Personal, Familial, And Socioeconomic Factors On The Return Of Remotely Collected Samples For Genetic Testing, Jordan Zeiger
Dissertations & Theses (Open Access)
There are a multitude of barriers known to impact access to medical care in the United States. COVID-19 has changed and compounded these barriers and led to a shift in the setting of the genetic counseling (GC) appointment, and in sample types used for genetic testing, specifically with use of telemedicine and remotely collected saliva kits. Previous studies have described lack of patient follow-through in returning these kits. Though the understanding of barriers to medical care, including access to genetics services, is well described, there is little in the literature for how these barriers impact the return of remotely collected …
Longitudinal Clonal Lineage Dynamics And Functional Characterization Of Pancreatic Cancer Chemo-Resistance And Metastasization, Chieh-Yuan Li
Longitudinal Clonal Lineage Dynamics And Functional Characterization Of Pancreatic Cancer Chemo-Resistance And Metastasization, Chieh-Yuan Li
Dissertations & Theses (Open Access)
In recent years, technological advancements, such as next-generation sequencing and single-cell interrogation techniques, have enriched our understanding in tumor heterogeneity. By dissecting tumors and characterizing clonal lineages, we are better understanding the intricacies of tumor evolution. Tumors are represented by the presence of and dynamic interactions amongst clonal lineages. Each lineage and each cell contributes to tumor dynamics through intrinsic and extrinsic mechanisms, and the variable responses of clones to perturbations in the environment, especially therapeutics, underlie disease progression and relapse. Thus, there exists a pressing need to understand the molecular mechanisms that determine the functional heterogeneity of tumor sub-clones …
Quantitative Dwi As An Early Imaging Biomarker Of The Response To Chemoradiation In Esophageal Cancer, Benjamin C. Musall
Quantitative Dwi As An Early Imaging Biomarker Of The Response To Chemoradiation In Esophageal Cancer, Benjamin C. Musall
Dissertations & Theses (Open Access)
For patients diagnosed with stages IIa-IIb esophageal cancer, the current standard of care treatment is tri-modality therapy (TMT), where neoadjuvant chemoradiation (nCRT) is followed by surgical resection. Histopathology of resected tumors reveals that pathological complete response (pCR) is achieved in 20-30% of patients through nCRT alone. Because of the high mortality and morbidity associated with esophagectomy, it may be advantageous for patients exhibiting pCR from nCRT alone to be placed under observation rather than completing their TMT. Therefore, a method for predicting response at an early time-point during nCRT is highly desirable. Conventional methods such as endoscopic ultrasound, re-biopsy, and …
Statistical Methods For Assessing Structural Change In Human & Microbial Genomes, Xuan Zhu
Statistical Methods For Assessing Structural Change In Human & Microbial Genomes, Xuan Zhu
Dissertations & Theses (Open Access)
Genetic sequencing has been recognized as an effective approach to accurately address biological problems, such as clinical detection of disease, mutation discovery, and targeting specific biomarkers associated with complex diseases. Compared with conventional Sanger sequencing, next-generation sequencing costs much less due to massively parallel high-throughput sequencing. However, due to large numbers of short read sequences, the accuracy of high-throughput sequencing data remains a challenge in that the data obtained from next-generation sequencing often has higher error rates, which may impact downstream genomic analysis. Even if the downstream genomic analysis performs well, the quality of the result will still be impacted …
Correlation Matrix Analysis Identifies Gene Signatures Of Immune Cell Subsets And Their Interactions In Follicular Lymphoma, Jason R. Westin
Correlation Matrix Analysis Identifies Gene Signatures Of Immune Cell Subsets And Their Interactions In Follicular Lymphoma, Jason R. Westin
Dissertations & Theses (Open Access)
There are important but ill-defined interactions between benign immune cell subsets and neoplastic B cells within follicular lymphoma (FL). Using the novel technique of correlation matrix analysis (CMA) of publicly available FL whole-tumor gene expression profiling (GEP) data, we have identified signatures of immune cell subsets. Overall survival correlated most highly with a model using signatures of macrophages, T cells, and stroma, which was able to add significantly to existing clinical prognostic tools. From our own data of a cohort of 43 FL tumors sorted into B-cell and non-B cell (NB) fractions for GEP, CMA of the tumor infiltrating NB …
Novel Imaging-Based Techniques Reveal A Role For Pd-1/Pd-L1 In Tumor Immune Surveillance In The Lung, Todd Bartkowiak
Novel Imaging-Based Techniques Reveal A Role For Pd-1/Pd-L1 In Tumor Immune Surveillance In The Lung, Todd Bartkowiak
Dissertations & Theses (Open Access)
The binding of immune inhibitory receptor Programmed Death 1 (PD-1) on T cells to its ligand PD-L1 has been implicated as a major contributor to tumor induced immune suppression. Clinical trials of PD-L1 blockade have proven effective in unleashing therapeutic anti-tumor immune responses in a subset of patients with advanced melanoma, yet current response rates are low for reasons that remain unclear. Hypothesizing that the PD-1/PD-L1 pathway regulates T cell surveillance within the tumor microenvironment, we employed intravital microscopy to investigate the in vivo impact of PD-L1 blocking antibody upon tumor-associated immune cell migration. However, current analytical methods of intravital …