The purpose of this study is to use neuroimaging to understand how networks in the brain change over time. Although the single most significant risk factor for developing Alzheimer's disease (AD) is age, the neurobiological processes underlying the transition from normal aging to AD are not well understood. Our group of researchers has developed ways to use MRI to detect small changes in certain parts of the brain. We will use neuroimaging to understand how the connections in the brain change over time in healthy aging. The goal is to discover which brain changes are present in healthy aging.

Participants will have two study visits (about 2 years apart) where they will undergo tests to assess mental function, fill out questionnaires, and undergo a blood draw, brain MRI and PET scan and provide a saliva sample. At the second visit, participants will not repeat PET scan. Participants will continue to be followed longitudinally every two years as long as the study is funded.

Participants are required to have a Co-Participant accompany them for the first portion of each visit. This individual must be a reliable informant that has contact with the participant at least once per week.

This study is for patients who have been diagnosed with relapsed (came back) and/or refractory (not responding to treatment) large B-cell lymphoma (LBCL). The investigational product is Lisocabtagene Maraleucel and is administered by infusion. Participants will have had the blood collection (leukapheresis - a laboratory procedure where white blood cells are separated from a sample of blood) procedure, where the T cells (white blood cells) were collected and genetically modified in a laboratory in order to manufacture the lisocabtagene maraleucel T cells for disease treatment. The lisocabtagene maraleucel T cells that were produced do not meet all of the prespecified release criteria to be used as a routine prescription drug as required by the Food and Drug Administration (FDA). This is called a nonconforming lisocabtagene maraleucel. The purpose of this study is to allow participants to be treated with their nonconforming lisocabtagene maraleucel. Participants can expect to be on the study for up to 3 months following the infusion of nonconforming lisocabtagene maraleucel.

This study is for patients that have been diagnosed with relapsed/refractory neuroblastoma. The investigational drug given is eflornithine (DFMO) along with etoposide. DFMO is the investigational drug being used along with etoposide for treatment of neuroblastoma. Participants will undergo a number of standard tests and research-related procedures before being able to enroll in this study. Some risks include but are not limited to: fewer red and white blood cells, diarrhea, abdominal pain, loss of appetite, skin rash, seizure, difficulty swallowing and blurred vision. Participants can expect to be on this study for approximately 2 years. Participants will then be followed for up to 5 years after study completion.

This study is designed as a prospective, multi-centered, double-blind, randomized, delayed-stimulation/ sham-stimulation controlled 12-month study to evaluate the effectiveness and safety of bilateral stimulation of the subcallosal cingulate white matter (SCCwm) using the Infinity™ Deep Brain Stimulation (DBS) system as an adjunctive treatment of non-psychotic unipolar Major Depressive Disorder (MDD) for adults who are experiencing a Major Depressive Episode (MDE) with inadequate response to 4 or more antidepressant treatments.

The purpose of this study is to compare the progression-free survival (PFS) of sacituzumab govitecan with pembrolizumab to that of sacituzumab govitecan alone in patients with PD-L1-negative metastatic TNBC, who have not received prior therapy for metastatic breast cancer and who have not received a prior PD-1/L1 inhibitor.

Subjects can remain on study for as long as they are benefitting from treatment - there are no set number of visits required to participate in this study. Sacituzumab govitecan and pembrolizumab are taken via intravenous (IV) infusion. Risks include decrease in white blood cell count, anemia, nausea, joint pain, and headache.

The U.S. Food and Drug Administration (FDA) has approved Sacituzumab govitecan for metastatic triple-negative breast cancer, however, it is considered experimental in this study because it is currently only approved for patients who have had more treatment than patients eligible to participate in this study. The FDA has approved Pembrolizumab for metastatic triple-negative breast cancer, but it is also considered experimental in this study because it is not currently approved for patients with PD-L1 negative cancer.