Hematopoietic Cell Transplant

The goal of this laboratory research study is to learn if interrupting a patient's letermovir dosing based on their immune system response can help HSC transplant patients avoid post-treatment CMV infections better than taking letermovir every day without interruption.

Primary PC - or training HCT clinicians to deliver PC domains as part of routine practice - is an alternative model of supportive care. We have developed Sentinel, a primary PC intervention for HCT clinicians and patients. This study will assess Sentinel's feasibility and acceptability.

A pilot study to evaluate feasibility of enrollment of patients in an intervention to improve neurocognitive function in hematopoietic cell transplantation (HCT) survivors using the cognitive training Lumosity program. In addition, patients' interest in receiving information regarding genetic risk of cognitive impairment post-HCT will be measured.

To evalute the safety and efficacy in reducing Cytokine Release Syndrome after hematopoietic stem cell transplantation by introducing immunosuppression earlier in the transplant process

The participants are being asked to take part in this clinical trial, a type of research study, because the participants are scheduled to receive or have recently received a hematopoietic cell transplant (HCT) or a solid organ transplant (SOT). Primary Objective To determine if pre-transplant screening for respiratory viral load predicts RVI within 1- year post-transplant among survivors. Secondary Objectives: * To develop and validate a classifier based on pre-transplant immunological profile predictive of developing an acute respiratory viral infection (aRVI), with RSV/PIV3/HMPV/SARS-CoV-2 through one-year post-transplant among survivors. * To develop and validate a classifier based on Day +100 post-transplant immunological profiles predictive of developing an acute respiratory viral infection (aRVI),with RSV/PIV3/HMPV/SARS-CoV-2 through one-year post-transplant among survivors .

Chronic GVHD (cGVHD) is a major cause of illness in patients who undergo hematopoietic transplantation (HCT). GVHD can affect any organ in the body, can require several years of treatment, and can impact the quality of life (QoL). Physical activity and exercise have been shown to enhance fitness and improve QoL in chronic illnesses including GVHD, however, patients often have barriers to attending sessions including distance, risk of infection, and physical therapists' lack of experience with pediatric patients. The team's goal is to assess whether a virtual rehabilitation program in children post-HCT (including children with chronic GVHD) is feasible and whether its implementation will improve physical functioning and QoL. Patients between the ages of 8 and 23 years who are at least one hundred days post-HCT will be eligible for participation. Patients will have an assessment by a pediatric physical therapist at the time of study entry, at the end of the rehabilitation program, and approximately 3 months later. They will be supplied with some exercise equipment (such as dumbbells and resistance bands). Patients will have twice weekly half-hour one-on-one online sessions with the physical therapist for 12 weeks. Patients will be recruited through the bone marrow transplant clinic.