The purpose of this research study is to find new ways of detecting and treating Hodgkin lymphoma and primary mediastinal B-cell lymphoma (a cancer of mature B-lymphocytes). It is a form of non-Hodgkin lymphoma, a type of cancer that originates in cells of the immune system, called lymphocytes. The information we learn by doing this research study may help study doctors identify new ways of treating your type of lymphoma. Participants in this study will provide archival (stored) tissue and blood samples. Participation is expected to last about 8 months. The risks and discomforts of this study are minimal. All blood specimens requested for this study will be collected at the time of routine procedures.

Sometimes, it is necessary to re-learn a previously learned movement behavior, for example, a bad posture during the golf drive or while playing the piano. Unlearning or relearning an intensively trained behavior is particularly important if the behavior is hampering recovery, for example, in chronic pain or after a stroke. With this study, we experimentally test the brain mechanisms that control the change of pre-existing stable memories of a motor skill with electroencephalography (EEG). We will then use non-invasive brain stimulation to modulate these brain mechanisms and test if it is possible to change the pre-existing motor memory and the learning of a new motor skill.

Researchers recently developed two new, computer-administered, brief questionnaire assessments of posttraumatic stress disorder (PTSD). The purpose of this study is to determine if these new assessments are accurate by comparing them with existing assessments for PTSD. To do this, we plan to administer the new questionnaires, existing questionnaires, and interview questions to 350 veterans with and without PTSD.

Veterans will be recruited from the Ralph H. Johnson VA Health Care System and Savannah CBOC.

For patients with head and neck cancer, delays starting adjuvant radiation therapy are common, disproportionately burden racial minorities, and contribute to poor survival and racial disparities in mortality. However, effective therapies to improve the delivery of timely, equitable, guideline-adherent adjuvant radiation therapy are lacking. We have developed a navigation-based multilevel intervention to enhance care coordination, communication, and key cancer care delivery processes that could provide the first effective treatment in this population, thereby improving survival, decreasing racial disparities in outcomes, and developing new standards of clinical care.

This proposal is to contribute to data registry and sample bank called Pediatrics Biorepository for Cardiology Clinical Research. Samples collected in this study may be used for future research which plan to advance the state of science in the hopes to develop new ways to diagnose and treat children affected with heart conditions.

There are two classes of drugs for preventing blood clots in patients with atrial fibrillation (AF), an irregular heartbeat, after cardiac surgery: antiplatelet drugs (like aspirin) and anticoagulants (blood thinners). This study aims to determine whether the addition of blood thinners to antiplatelet drugs will improve treatment outcomes in patients who develop AF after coronary artery bypass grafting (CABG) surgery.

In this study, you will be randomized (assigned to a group by chance--like flipping a coin) into one of 2 study groups; the assignment to receive the antiplatelet drug alone or the antiplatelet drug plus a blood thinner.

Before discharge from the hospital, you will undergo an electrocardiogram (ECG), which examines the electrical activity of your heart. At 1 and 2 months after randomization, you will receive a phone call from the study staff. At 3 months after randomization, you will return to the institution where you received your surgery for an in-person visit. At 6 months, you will receive a phone call from the study staff. Your total participation will be about 6 months.

Persistent smell loss that can include diminished or distorted smell function is a common symptom of long COVID syndrome. There are limited treatment options for long COVID-related smell loss. Our study aims to determine the efficacy of two at-home treatments, smell training and non-invasive trigeminal nerve stimulation. This study requires participants to conduct daily at-home treatment sessions, attend three in-person study visits at the MUSC Department of Psychiatry and Behavioral Sciences, and complete electronic questionnaires over the 12-week trial, and again at the six-month timepoint. Participants in this trial may benefit directly with an improvement in sense of smell. However, participation may also help society more generally, as this study will provide new information about long COVID-related smell loss and its treatment.

EEG Substudy:

Long COVID syndrome has been associated with cognitive impairment and may be related to affected emotional regulation. This study will use a electroencephalography (EEG) to examine how the body and brain responses to emotional cues in participants who are currently undergoing treatment for COVID-related smell loss. Participation will aid in the understanding of how emotional processing in long COVID is impacted by treatment for related smell loss.

Blood Analysis Substudy:
Alzheimer's Disease can be precedented by other clinical disorders or neuropsychiatric symptoms. Due to the cognitive deficits that can affect those with Long COVID, this sub study will use a blood sample to investigate if there are blood based biomarkers for Alzheimer's in those who report Long COVID symptoms.

Apathy is a common set of symptoms seen in many people following a stroke. Apathy occurs when a person has lost motivation, becomes withdrawn, and stops doing things that used to be important to them. Apathy has a large negative impact on a person's quality of life, and can also have a large impact the people who take care of individuals with apathy. There are currently no FDA-approved treatments to help with apathy, and other services like therapy may be difficult to access for people who have had a stroke. To address this problem, we are conducting a study to find out if a form of treatment called repetitive transcranial magnetic stimulation (rTMS) can be safe and helpful for people struggling with apathy after a stroke. Our study will apply a new form of rTMS which can be delivered quickly to a part of the brain called the medial prefrontal cortex (mPFC). Our study will help establish whether this treatment is safe, comfortable, and effective for people with apathy after a stroke, and will help researchers develop new forms of treatment.

This study will apply a novel imaging technique in patients with brain tumors to systematically evaluate the impact of various imaging parameters on image appearance, contrast, signal, and tumor sharpness, and to optimize the technique to maximize tumor visibility while minimizing scan time and image artifacts.

This is an observational non-medication study. The purpose of this study is to understand the immune system in people who are at risk for developing systemic lupus erythematosus ("lupus" or "SLE"). The investigators hope to develop better ways to predict who will get lupus and possibly come up with ideas for new treatments that can prevent or treat the disease.

Participants will be asked to complete 4 annual study visits and monthly telephone contacts with the study team over the course of 3 years. Visits will include a physical exam, collection of blood and urine, and the completion of some surveys/questionnaires about your health and wellbeing. The monthly phone calls will be a brief contact to check on any changes in your health and should take no longer than 15 minutes to complete.

Compensation is available for participation.