Mass General - Division of Clinical Research

The goal of this observational study is to learn about the natural progression of Angelman syndrome (AS) in children and adults with a confirmed genetic diagnosis of AS. The main questions it aims to answer are: - How do developmental skills, such as communication, motor abilities, and adaptive behaviors, change over a 1-year period in people with AS? - Are there specific patterns in brain activity or sleep that are associated with changes in AS symptoms over time? Participants will: - Visit the study site 5 times over 1 year (approximately every 3 months) for assessments. - Complete tests and questionnaires about development, behaviors, and sleep with the help of their caregivers. - Undergo electroencephalograms (EEGs) to measure brain activity and wear a sleep-monitoring device at home (to collect actigraphy data).

Type: Observational

Start Date: Mar 2026

open study

Estrogen-dominant gender-affirming hormone therapy (GAHT) is standard of care for transgender women and gender-diverse individuals and typically consists of estrogen together with anti-androgen/ testosterone therapy. Estrogen and testosterone balance influences fat and muscle mass, muscular strength and the development of sarcopenia. Sarcopenia, a condition characterized by the loss of muscular mass, strength, and function, in turn, is associated with increased mortality and adverse health outcomes. Estrogen-dominant GAHT may have deleterious effects on body composition and muscular performance that place TGD individuals at-risk for sarcopenia. As part of NCT04128488, our investigative team found that appendicular lean mass (ALM)/ height2 decreases after estrogen-based GAHT, thereby portending a higher risk for sarcopenia after GAHT. Early recognition of the changes in body composition and muscular performance leading to sarcopenia are critical, providing potential avenues to intervene and abrogate untoward downstream health effects. A promising intervention is resistance exercise, which has been shown in select populations to improve muscular mass and strength and reduce fat mass, and, thus, mitigate progression to sarcopenia in at-risk populations. For this prospective, pilot clinical trial, investigators will enroll participants who are about to be initiated on estrogen-dominant gender-affirming hormone therapy. Investigators will be randomizing participants 1:1 to either an at-home resistance exercise intervention or no exercise intervention (nutritional and exercise counseling only) for 12 weeks and assess muscle mass, strength, and function both before and after this 12-week period. The exercise intervention group will be provided with the necessary materials to complete the exercise program along with weekly virtual visits with our study team in order to learn their assigned exercises for the week. Further, survey tools will be administered to ascertain whether the resistance exercise intervention may affect gender congruence.

Type: Interventional

Start Date: Apr 2026

open study

PIONEER-ALS is a Phase 1/2, multicenter, open-label, ascending dose, uncontrolled, first-in-human study that will evaluate the safety, tolerability and effects on clinical and biomarker endpoints of intracisternal administration of Vtx-002 in participants with Amyotrophic Lateral Sclerosis (ALS). Two escalating dose (low dose and high dose) cohorts are planned. The duration of the study will be a maximum of 5 years and 5 weeks (265 weeks) for each participant. The screening period may last up to 5 weeks to complete screening procedures.

Type: Interventional

Start Date: Dec 2025

open study

The goal of this clinical trial is to learn whether the study drug THRV-1268 can safely and effectively shorten the QT interval in people diagnosed with Long QT Syndrome Type 2 (LQTS 2). The study will also learn about the safety and tolerability of THRV-1268 at different doses. The main questions this study aims to answer are: Does THRV-1268 reduce the QTc interval (a measure of the heart's electrical recovery time)? What side effects or medical problems occur when participants take THRV-1268? Which dose of THRV-1268 works best and is safest? Participants will: Complete a 3-week observation period with ECG and Holter monitoring to establish baseline QTc measurements Take THRV-1268 tablets twice daily at two dose levels for 6 weeks (Part A) or be randomly assigned to a dose group for 6 weeks (Part B) Have clinic visits and tests to monitor safety and changes in their heart rhythm May continue taking THRV-1268 for up to 1 year for ongoing safety and efficacy evaluation Researchers will compare changes in QTc over time and evaluate side effects to determine whether THRV-1268 can help reduce the risk of abnormal heart rhythms and sudden cardiac events in people with LQTS 2.

Type: Interventional

Start Date: Mar 2026

open study

The objective of this protocol is to use a case-control paradigm to compare the response to an intravenous administration of kisspeptin in individuals with and without post-covid-19 syndrome. The study subjects will receive a single bolus of kisspeptin. This study will utilize the technique of frequent blood sampling (q10 minutes) to provide detailed neuroendocrine characterization of endogenous LH secretion before and after kisspeptin administration. This frequency of blood sampling is required to define the features of LH pulses.

Type: Interventional

Start Date: Mar 2026

open study

This is a study of LY4337713 in participants with certain types of cancer that is advanced or has spread. Participants must have cancer with high levels of a protein called fibroblast activation protein (FAP). The purpose of this study is to evaluate safety, side effects, and efficacy of LY4337713. In addition, this study will evaluate how much LY4337713 gets into the bloodstream, how it is broken down, and how long it takes the body to get rid of it. For each participant, the study will last about 5 years.

Type: Interventional

Start Date: Oct 2025

open study

The goal of this study is to determine the feasibility and impact of delivering long-acting injectable cabotegravir HIV pre-exposure prophylaxis and suite of support services to adults who inject non-prescription drugs who are risk for HIV through known sexual risk.

Type: Interventional

Start Date: Feb 2026

open study

This study explores how a physical activity program can affect hormone health and diabetes risk in girls ages 8-12 who may be at higher risk. The study aims to address: - Does the 'ActiveGirls' program meet the needs of girls and families in engaging them to increase physical activity? - What is the trend of markers of diabetes risk and puberty hormones over a 1-year period and how are these levels related to physical activity levels? Participants in this study will either: - Participate in a 'full' intensity intervention that includes educational messages (text/email) as well as health coaching visits to support physical activity over a 6 month period - Participate in a delayed 'lower intensity' intervention that includes only educational messages (text/email) - Participants in both groups will complete at-home activity monitoring, two study visits for check-ups and tests, and surveys

Type: Interventional

Start Date: Nov 2025

open study

This study will evaluate the safety, efficacy, optimal dose, and pharmacokinetics (PK) of BNT326 as monotherapy (Part 1) and as combination treatment with immunotherapeutic agents (Part 2) in participants with histologically or cytologically confirmed solid tumors that are advanced (i.e., either metastatic or recurrent tumors with no further definitive treatment possible) and/or have relapsed/progressed after prior therapy.

Type: Interventional

Start Date: Aug 2025

open study

The goal of this clinical trial is to compare a core set and enhanced set of implementation strategies in increasing the reach of evidence-based treatments to patients with HIV and depression. The main questions it aims to answer are: What proportion of patients start an evidence-based treatment for depression (reach)? What percentage of patients show clinical improvement in depression and what percentage attain viral undetectability within one year (effectiveness)? Researchers will compare high and low reach clinics to further inform tailored implementation strategies for uptake and maintenance. Clinics will be randomized into one of two study arms: core versus enhanced strategies. In both arms, core strategies will be utilized. Enhanced clinics will also receive more resource-intensive training.

Type: Interventional

Start Date: Apr 2026

open study

Perioperative fasting has historically been viewed as a low-risk intervention. However, preliminary data indicate that perioperative loss of nutrition and fluids is likely harmful. This study intends to characterize perioperative fasting practices and their potential effects on clinical outcomes through possible effects on patient well-being (anxiety, hunger, thirst), physiology (hypovolemia, hypotension), perioperative aspiration, etc. The research team hypothesized that in addition to known adverse effects on patients' well-being, prolonged preoperative fasting adversely affects circulating blood volume-related (hypotension, decreased urine output etc.) and glucose metabolism-related (e.g., hypo/hyperglycemia) perioperative physiology. The investigators will also test for an association between the duration of preoperative fasting and the risk of perioperative pulmonary aspiration. Additional knowledge on the potential adverse effects of preoperative fasting will inform preoperative fasting policies and research interventions that are relevant to hundreds of millions of patients subjected to preoperative/preprocedural fasting worldwide each year.

Type: Observational

Start Date: Jan 2016

open study

The investigator aims to conduct a feasibility randomized controlled trial (RCT) (N=50) to test the feasibility, acceptability, and credibility of an asynchronous web-based mind-body intervention (Toolkit for Resilient Life beyond Pain and Substance Use; Web-TIRELESS) versus web-based minimally enhanced usual care (Web-MEUC) among adult patients with a painful non-traumatic upper-extremity condition(s) (PNUC) and commorbid risky substance use. Deliverables: [1] Adapt and refine open pilot protocol, patient recruitment, and other study materials. [2] Assess the feasibility, acceptability, and credibility of Web-TIRELESS and Web-MEUC in preparation for future research.

Type: Interventional

Start Date: Sep 2025

open study

Researchers at Massachusetts General Hospital are looking to see if a program created to help improve thinking and memory can work for refugees with traumatic brain injury (TBI). They're checking if this program is practical and if people find it helpful. The study will have two groups. Participants will complete a first questionnaire and then be assigned to a group by chance. One group will participate in the program immediately and then answer the second questionnaire (approximately 3 months after the first questionnaire they did). Then they will wait and then answer the third and final questionnaire approximately 6 months after the first one. The second group will wait and answer the second questionnaire approximately 3 months after the first one. Then they will receive the program and answer the third and final questionnaire (approximately 6 months after the first one they did.)

Type: Interventional

Start Date: Oct 2025

open study

Tenapanor is the newest FDA-approved drug for IBS with constipation (IBS-C). This study seeks to understand tenapanor as a treatment for cystic fibrosis-related constipation (CFrC) in CF patients. Participants will ingest one 50 mg tablet of tenapanor, twice daily, for a 4-week treatment period. They will also complete three questionnaires, the PAC-SYM, PAC-QoL, and IBS-SSS, and daily diaries to characterize GI symptom burden and spontaneous bowel movement (SBM) frequency.

Type: Interventional

Start Date: Jun 2025

open study

The ReMATCH Study is a prospective, single arm, open label, multi-center, study utilizing the FARAPULSE PFA System, including the FARAWAVE and FARAPOINT PFA Catheters.

Type: Interventional

Start Date: Jun 2025

open study

Sleep disturbances, cognitive reserve, and continuing pain and inflammation are other risk factors contributing to delirium (confusion and agitation) and neurocognitive decline (in the long term) following heart surgery. Investigators aim to test a bundle of sleep optimization, cognitive exercise before surgery, and extended pain relief for 48 hours with intravenous acetaminophen combined with enhanced recovery after surgery protocols (SCOPE bundle). SCOPE will fill significant gaps in evidence by testing the value of a patient and care-provider-focused intervention that can potentially minimize POD and improve outcomes (cognitive & physical function, sleep quality, pain, depression or anxiety, and survival) important to patients and families. The SCOPE trial will address many heart surgery outcome-related questions commonly asked by patients: What can I do to reduce my chances of developing confusion, hallucinations, or delirium after surgery? How can I best prepare before surgery to improve my long-term health and avoid disability? Are there exercises I can participate in that improve my sleep, pain, and mood after surgery? Intellectual pursuits, physical activity, and social interactions support cognitive reserve, while poor health, poor sleep hygiene, poor nutrition, and mental health disease can diminish reserve. Various interventions with different intensities and timing to augment cognitive reserve have been associated with positive outcomes on neuropsychological testing. Adaptive video gaming for as little as 10 hours leads to the maintenance of independence in activities of daily living and sustained improvements in speed of processing, attention, and working memory in older people. Likely through the increased cognitive reserve, perioperative brain exercise aims to protect against morbid cognitive recovery after surgery. Sleep is vital for memory and cognitive function. Poor sleep traits in older adults that are potentially modifiable, including short/long duration, daytime napping, and associated sleepiness, led to an almost 2-fold increase in delirium risk. Patients will complete an evidence-based course on healthy sleep habits and will complete guided exercises designed to restructure behaviors and thinking. They are encouraged to follow a set of recommendations to improve their sleep (e.g., optimal sleep duration, advice for habits such as daytime napping, maintaining a regular sleep schedule, avoiding caffeine, regular daylight exposure, dimming lights or electronics and relaxation and thought exercises for optimal sleep); many of these sleep behaviors have been strongly linked to increased risk for cognitive decline. Investigators propose that sleep optimization before AND after (an established best practice sleep bundle) surgical insult will contribute to cognitive reserve leading to decreased delirium risk and key patient-centered outcomes (postoperative sleep, pain, cognition, mood, and survival). Inadequate pain relief and opioids are both risk factors for delirium. Surgery on the chest is a significant pain source. Approximately 30-75% of patients suffer from moderate to severe pain in the postoperative period. Almost half of the patients have severe pain at rest, and three-quarters have severe pain during coughing and movement. Pain and inflammation are closely biochemically linked. Sleep, brain exercise, and adequate pain control with opioid-sparing can be additive or synergistic interventions to prevent delirium following heart surgery. Investigators propose three specific aims by conducting a 1:1 randomized controlled trial in 406 heart surgery patients 60 or older undergoing heart surgery. They will be administered perioperative sleep optimization, brain exercise training, and intravenous acetaminophen over 48 hours. A trained expert will administer the sleep and cognitive exercise protocols at least two weeks before surgery. This expert will handhold the patients for two weeks until the surgery. Thus, the gains made before surgery with better sleep quality and improved brain reserve will be sustained with postoperative pain control to lower the ongoing inflammation. Through this trial, investigators will evaluate if the SCOPE bundle can reduce 1) in-hospital delirium, 2) long-term (one, six, and twelve months) cognitive, physical, and self-care function, and 3) barriers to implementation of this bundle. Currently, no options are routinely available to patients to optimize their sleep and cognition before cardiac surgery. The proposed research is significant because it will be the first to test the bundled behavioral intervention approach (sleep optimization, brain exercise) before surgery with extended, scheduled pain management with non-opioids following surgery. The SCOPE trial will yield relevant and immediately actionable data to improve care for over 900,000 adults in the U.S. each year.

Type: Interventional

Start Date: Jun 2025

open study

The main objective of the study is to compare overall survival in participants receiving xaluritamig versus investigator's choice (cabazitaxel or second androgen receptor-directed therapy [ARDT]).

Type: Interventional

Start Date: Dec 2024

open study

The purpose of this study is to measure the clinical benefits of the combination of RP2 and nivolumab as compared with the combination of nivolumab and ipilimumab in patients with metastatic uveal melanoma who have not been treated with immune checkpoint inhibitor therapy.

Type: Interventional

Start Date: Dec 2024

open study

This is a randomized, open-label study in adult patients who have completed standard first line therapy for large B-cell lymphoma (LBCL) and achieved a complete response or partial response suitable for observation, but who have minimal residual disease (MRD) as detected by the Foresight CLARITY™ Investigational Use Only (IUO) MRD test, powered by PhasED-Seq™. The purpose of the trial is to assess the efficacy and safety of consolidation with cemacabtagene ansegedleucel (cema-cel), an allogeneic CD19 CAR T product, as compared to standard of care observation. In this study, participants with MRD are randomized 1:1 to treatment with cema-cel or an observation arm. Treatment includes cema-cel following a lymphodepletion regimen of fludarabine and cyclophosphamide. Prior to August 2025, participants may also have received an anti-CD52 monoclonal antibody, ALLO-647, as part of their lymphodepletion regimen.

Type: Interventional

Start Date: Jun 2024

open study

The primary goal of this study is to evaluate the effectiveness of elacestrant versus standard endocrine therapy in participants with node-positive, Estrogen Receptor-positive (ER+), Human Epidermal Growth Factor-2 negative (HER2-) early breast cancer with high risk of recurrence.

Type: Interventional

Start Date: Sep 2024

open study

This is a two-part, open-label, multicenter, dose escalation and dose expansion study designed to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PDx), and anti- tumor activity of ETX-19477, a novel reversible small molecule inhibitor of PARG.

Type: Interventional

Start Date: May 2024

open study

This is a Phase 1, multicenter, open-label dose escalation study to determine the safety and tolerability of intratumoral (IT) injection of tolododekin alfa (ANK-101) in participants with advanced solid tumors who have progressed during or after receiving standard of care (SOC) therapy or who will not benefit from such therapy. The study will be conducted in three parts; in Part 1, participants with superficial lesions will receive ANK-101 as a single agent; in Part 2, participants with visceral lesions will receive ANK-101 as a single agent; and in Part 3, participants with cutaneous squamous cell carcinoma (CSCC) will receive ANK-101 in combination with cemiplimab.

Type: Interventional

Start Date: Jan 2024

open study

This clinical trial is studying solid tumor cancers. A solid tumor is one that starts in part of your body like your lungs or liver instead of your blood. Once they've grown bigger in one spot or spread to other parts of the body, they're harder to treat. This is called advanced or metastatic cancer. Participants in this study must have breast cancer or gastric cancer. Participants must have tumors that have HER2 on them. This allows the cancer to grow more quickly or spread faster. There are few treatment options for patients with advanced or metastatic solid tumors that express HER2. This clinical trial uses an experimental drug called disitamab vedotin (DV). Disitamab vedotin is a type of antibody drug conjugate or ADC. ADCs are designed to stick to cancer cells and kill them. This clinical trial uses a drug called tucatinib, which has been approved to treat cancer in the United States and some other countries. This drug is sold under the brand name TUKYSA®. This study will test how safe and how well DV with tucatinib works for participants with solid tumors. This study will also test what side effects happen when participants take these drugs. A side effect is anything a drug does to the body besides treating the disease.

Type: Interventional

Start Date: May 2024

open study

To Evaluate the Effect of Seladelpar on Clinical Outcomes in Patients with Primary Biliary Cholangitis (PBC) and Compensated Cirrhosis.

Type: Interventional

Start Date: Sep 2023

open study

Study RIN-PF-305 is designed to evaluate the safety and efficacy of inhaled treprostinil in subjects with progressive pulmonary fibrosis (PPF) over a 52-week period.

Type: Interventional

Start Date: Oct 2023

open study