This study is for subjects who have been diagnosed with acute leukemia or myelodysplastic syndrome (MDS) and are a candidate for allogeneic hematopoietic stem cell transplant (HSCT). The study is being done to learn if adding defibrotide to the standard medicines for prevention of acute Graft-versus-Host Disease (aGvHD), which is called immunoprophylaxis, will help to prevent aGvHD better than using the usual immunoprophylaxis medicines alone. The investigational drug in this study is called Defibrotide. The duration of participation for each patient is approximately 6 months.
This study is for patient that have been diagnosed with suspected lower respiratory tract infection. The purpose of this study is to evaluate a new test that may be able to find more lung infections than current tests can. This new test is called next-generation sequencing and looks in respiratory secretions for bacteria, viruses, fungi, and other organisms that may cause infection. We hope to learn more about the usefulness of this new test in identifying infections.