This project would not have been possible without the support and guidance of my supervisor, Emma Elizabeth Ilett. Emma helped me establish the specific research question and structure of the study. She also assisted with statistical analysis, provided helpful advice during each step of the project, and taught me so... and Hematopoietic stem cell transplantation (HSCT) recipients receive pre-transplantation treatment regimens varying in conditioning intensity and antibiotic administration. Broad-spectrum, antianaerobic antibiotics have the potential to disrupt the normal gut microbiome balance and reduce immune function. We aimed to retrospectively examine the impact of pre-transplantation conditioning and antibiotics on rates of mortality,...