This research is being done to assess whether it is safe and effective to stop oral anticoagulation medications (a blood-thinning medication) during prolonged periods of normal heart rhythm in participants with infrequent episodes of atrial fibrillation (AF).

You may qualify for this study if you have a history of atrial fibrillation (AF) and are currently taking an oral anticoagulant (a blood-thinning medication). You will be randomized to one of two groups: Control Group or Study Intervention Group.

If you are randomized to the Control group, you will be asked to stay on your previously prescribed oral anticoagulant. If you are randomized to the Study Intervention group, you will be asked to take the oral anticoagulant for 30 days only if a prolonged episode of AF is detected on an AF-sensing Apple smartwatch you will be provided.

The purpose of this study is to learn more about how cannabis use affects memory, thinking, and stress response in older adults, and how ovarian hormones affect them in older women. Participants will undergo a screening process over telehealth to confirm eligibility. There is a second telehealth visit to complete questionnaires, a cognitive testing battery, and a medical history. There is one visit in the clinic where participants will provide urine and saliva samples for drug and alcohol testing and a blood sample for a lipid testing, and complete additional cognitive tasks. They will then complete CREMA sessions (Cue Reactivity Ecologic Momentary Assessment) at home, two times a day for ten days. CREMA sessions include answering questions about marijuana use and sleep, and rating stress and craving.

The purpose of this study is to learn more about how cannabis use affects memory, thinking, and stress response in older adults, and how ovarian hormones affect them in older women. Participants will undergo a screening process over telehealth to confirm eligibility. There is a second telehealth visit to complete questionnaires, a cognitive testing battery, and a medical history. There is one visit in the clinic where participants will provide urine and saliva samples for drug and alcohol testing and a blood sample for a lipid testing, and complete additional cognitive tasks. They will then complete CREMA sessions (Cue Reactivity Ecologic Momentary Assessment) at home, two times a day for ten days. CREMA sessions include answering questions about marijuana use and sleep, and rating stress and craving.

The purpose of this study is to learn more about how cannabis use affects memory, thinking, and stress response in older adults, and how ovarian hormones affect them in older women. Participants will undergo a screening process over telehealth to confirm eligibility. There is a second telehealth visit to complete questionnaires, a cognitive testing battery, and a medical history. There is one visit in the clinic where participants will provide urine and saliva samples for drug and alcohol testing and a blood sample for a lipid testing, and complete additional cognitive tasks. They will then complete CREMA sessions (Cue Reactivity Ecologic Momentary Assessment) at home, two times a day for ten days. CREMA sessions include answering questions about marijuana use and sleep, and rating stress and craving.

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.

The study is for patients that have been diagnosed with low-grade non-invasive upper tract urothelial cancer. The investigational drug used in this study is padeliporfin which is injected into a vein. The main purpose of this study is to learn about the effects and safety of an investigational treatment named padeliporfin Vascular Targeted Photodynamic (VTP) Therapy, in treating low-grade non-invasive upper tract urothelial cancer. Participants can expect to be in this study for up to 18 months. The completion of the study will include up to 9 study visits to the study site and 8 phone visits.

Patients between 4-21 years of age with at least one wart or molluscum lesion are eligible to participate in this study. The duration of the study is a minimum of 4 weeks with the maximum duration of monthly treatments for one year, depending on lesion clearance. The number of lesions will be chosen by the dermatologist. Patients who opt to participate will receive non-thermal, or cold, atmospheric plasma to treat all lesions selected. Safety profile as well as changes in size, pain and appearance will be measured. Photographs and dermatologist impressions will be used to measure treatment response.

This study is testing citicoline as a possible medication to treat alcohol use disorder. Youth (ages 16-22) will be randomly assigned to receive either citicoline (2000mg per day) and or a placebo for four weeks.

All participants will receive brief counseling from a trained clinician and will undergo a brain scan and cognitive testing at the beginning and end of the treatment.

Participants must provide informed consent and youth under 18 must have parental consent to participate. The full study will last approximately one month.

Compensation is available to those who qualify.

The main purpose of this study is to see if taking benralizumab is effective in treating Severe Eosinophilic Asthma in patients 6 to 17 years old compared with placebo. Benralizumab is administered through a subcutaneous injection (shot). Participation in the study is divided into two parts. The first part will last up to 16 weeks or until an asthma attack or flare is experienced. The second part will last up to two years.

This study will examine the association between race-related stress and alcohol use disorder on alcohol craving, and stress markers. Participants who identify as African American will complete a total of three visits, including a 1-month follow-up visit. Participants will be asked to complete questionnaires about their mood, anxiety, drug use, craving, and experiences of racial discrimination. They will listen to personalized scripts about a stressful situation related to their race, a time when they drank alcohol, and a relaxing situation. Participants will also be asked to complete mobile assessments for 1 month following their last visit. These mobile assessments will include links to surveys that will be sent via text. Compensation is available.