Watertown

Researchers are evaluating the safety and effectiveness of tenapanor in adults with Chronic Idiopathic Constipation (CIC) in this 26-week phase 3 study. The study is randomized, double-blind, and placebo-controlled, involving multiple centers. It aims to compare three doses of tenapanor (5 mg, 25 mg, and 50 mg taken twice daily) against a placebo, with a focus on improving spontaneous bowel movements. Participants will first undergo a 2-week screening where their eligibility is assessed through medical history, physical exams, lab tests, ECG, and self-reported constipation symptoms using an electronic diary (eDiary). Eligible patients will then be randomly assigned to receive one of the three doses of tenapanor or placebo twice daily for 26 weeks. During this treatment period, patients will continue daily and weekly symptom reporting via the eDiary and attend regular safety visits at weeks 2, 4, 8, 12, 16, 20, and 26. After completing the 26-week treatment, patients enter a 4-week treatment-free safety follow-up period to monitor any adverse events. A final visit occurs at the end of this follow-up to assess safety. The main outcome measured is the durable complete spontaneous bowel movements response over 12 weeks. Overall, the study involves careful monitoring of symptoms, safety, and treatment effects over approximately 32 weeks.

Researchers are evaluating the safety and effectiveness of trontinemab in people aged 50 to 90 with early symptoms of Alzheimer's disease, ranging from mild cognitive impairment to mild dementia. This Phase III clinical trial focuses on those who show evidence of Alzheimer's pathology and have a recent history of cognitive decline. The study aims to measure changes in cognitive function over 72 weeks. Participants will be randomly assigned to receive either intravenous trontinemab or a placebo. The trial is designed as a double-blind, placebo-controlled study, meaning neither participants nor researchers know who receives the active drug or placebo. The treatment period lasts up to 72 weeks, during which participants will undergo various assessments to monitor their cognitive status and safety. During the study, participants will complete clinical tests including cognitive assessments and imaging such as MRI, PET scans, or cerebrospinal fluid analysis to confirm Alzheimer's pathology. A study partner will assist participants as needed. Researchers will track changes from the start of the study through week 72 using tools like the Clinical Dementia Rating. Safety monitoring and adherence to study procedures will also be closely observed throughout the trial.

Researchers are evaluating the clinical efficacy, safety, and tolerability of azetukalner as a monotherapy in adults diagnosed with moderate-to-severe Major Depressive Disorder (MDD). This Phase 3, multicenter, randomized, double-blind, placebo-controlled study focuses on participants aged 18 to 74 who have experienced their first major depressive episode before age 50. The study aims to compare azetukalner with placebo in treating MDD over a 6-week period. Participants will receive either azetukalner 20 mg or placebo orally once a day with food, preferably with the evening meal, for 6 weeks. The treatment is administered as a daily oral dose, and participants are randomly assigned to one of the two groups. The study is designed to maintain blinding of treatments to both participants and researchers. During the study, participants' depression symptoms will be assessed using the Hamilton Depression Rating Scale (HAMD-17) to measure changes from baseline to Week 6. Researchers will also monitor safety and tolerability throughout the treatment period. Participants will undergo regular evaluations, and the study includes careful screening to ensure eligibility and monitor any adverse effects during the 6 weeks of treatment.

Researchers are evaluating the effectiveness and safety of brenipatide when given along with standard care compared to a placebo with standard care in adults with bipolar disorder. This Phase 2 study aims to see if brenipatide can delay the worsening of bipolar symptoms. The trial includes participants aged 18 to 75 years and involves a careful assessment of how well the treatment works and its safety profile. The trial has three main periods: a screening period lasting about one month, a treatment period of at least six months, and a follow-up period of around two months. Participants receive either brenipatide or placebo, both given by subcutaneous injection, alongside their usual bipolar disorder medications. The study may end earlier if symptoms worsen or if participants withdraw for any reason. Participants will be asked to self-inject the study medication, maintain diaries, complete questionnaires, and attend regular visits throughout the study. Researchers will monitor the time to relapse, defined as the number of days from randomization until symptoms worsen according to specific criteria, over at least six months. Safety and adherence to treatment will also be closely observed during the study.

Researchers are studying the safety and effectiveness of brenipatide, given alongside standard treatment, compared to a placebo with standard treatment, to see if it can delay the return of symptoms in adults with major depressive disorder. This is a Phase 3, randomized, double-blind study involving adult participants aged 18 to 75 years. The trial is designed to assess how long it takes for depression symptoms to relapse after starting the adjunctive treatment. Participants will receive either brenipatide or placebo, both administered by subcutaneous injection, in addition to their stable standard of care medication. The study has three main periods: a screening period lasting about one month, followed by a treatment phase of at least 12 months where participants receive the assigned injections, and finally a follow-up period of roughly two months. The total time in the study can be shorter if symptoms worsen or if a participant withdraws. During the trial, participants will need to attend scheduled visits, self-inject the study drug, maintain study diaries, and complete questionnaires. Researchers will monitor participants closely to determine the time until relapse of major depressive disorder symptoms occurs. Safety and adherence to study procedures will be tracked throughout the trial, with the primary outcome measuring the number of days from randomization until relapse.

Researchers are evaluating the safety and effectiveness of brenipatide combined with standard care compared to a placebo with standard care in adults with schizophrenia. This phase 2 study aims to understand how well brenipatide works as an additional treatment for schizophrenia and monitor any side effects. Participants eligible for the study must have schizophrenia and be on stable standard care medication. The trial consists of three main periods: a screening period lasting about one month, a treatment period that can last up to 12 months, and a follow-up period of approximately two months. During the treatment phase, participants receive either brenipatide or placebo administered by subcutaneous injection alongside their standard care. The study includes careful monitoring and adherence to study procedures such as self-injection, keeping diaries, and completing questionnaires. Participants will be involved in regular visits and assessments throughout the entire study duration, which may last up to 15 months. Researchers will measure changes in body weight from baseline to week 52 as a primary outcome. Participants will also be monitored for safety and efficacy through ongoing evaluations, including the use of electronic or paper diaries and required questionnaires to track their progress and response to treatment.

Researchers are evaluating the safety and effectiveness of brenipatide compared to placebo for people with opioid use disorder. This study focuses on participants who are also using buprenorphine, with or without naloxone, as part of their treatment. The trial includes two parts, each with separate groups of participants, to better understand how brenipatide works alongside current therapies in early recovery from opioid use disorder. The study has two parts: Part A involves a double-blind treatment phase followed by an open-label extension, while Part B offers an open-label treatment only. Brenipatide and placebo are given as subcutaneous injections, and buprenorphine is administered either sublingually or buccally. Participants will be enrolled in only one part of the study, with treatment durations potentially lasting up to 144 weeks in Part A and 116 weeks in Part B, depending on enrollment timing and study progress. Participants will regularly attend study visits where they will be assessed through urine drug screens and self-reports to measure abstinence from opioid use. They will also maintain study diaries and complete questionnaires to track adherence and effects. The main outcomes measured include the percentage of weeks participants remain abstinent from opioids between weeks 13 and 24, verified by negative drug tests and no self-reported opioid use. Safety and long-term effectiveness will be monitored throughout the study duration.

Researchers are evaluating the safety, tolerability, and effectiveness of VLS-01 buccal film (VLS-01-BU) as a short-term treatment for adults with treatment resistant Major Depressive Disorder (TRD). This Phase 2, multicenter, double-blind, randomized, placebo-controlled trial aims to compare antidepressant effects of VLS-01-BU against placebo, focusing on the onset and durability of these effects. About 142 participants with TRD will be randomly assigned in equal groups to receive two doses of either VLS-01-BU or placebo via buccal transmucosal administration, spaced two weeks apart. Following this placebo-controlled period, symptoms will be monitored for 12 weeks. Then, all participants will be re-randomized to receive a single additional double-blind dose of VLS-01-BU at one of two dose strengths during a non-placebo-controlled treatment phase. Safety and efficacy will be assessed two weeks after the third dose. Participants will be closely monitored throughout the study, including during the 12-week follow-up after the second dose and after the final treatment. Researchers will measure changes in depression severity using the Montgomery-Åsberg Depression Rating Scale (MADRS) from baseline to Day 29. Safety evaluations and tolerability assessments will also be conducted to understand the effects and duration of VLS-01-BU treatment.

Researchers are studying sleep patterns in adults with Major Depressive Disorder (MDD) who experience moderate to severe insomnia symptoms (MDDIS) or no to mild insomnia symptoms (non-MDDIS). The goal is to evaluate brain activity during sleep using an at-home sleep Electroencephalogram (EEG) device and to understand how these objective sleep measurements relate to participants' own sleep experiences. Participants will use a sleep EEG device at home to record brain activity during sleep over a specified period. Alongside this, subjective sleep data will be collected using various self-report tools including sleep diaries and standardized questionnaires like the Structured Interview Guide for the Hamilton Depression Rating Scale and Patient-Reported Outcomes Measurement Information System forms. During the study, participants will be assessed both objectively through the EEG recordings and subjectively through questionnaires and interviews about their sleep quality and disturbances. The researchers will analyze these data to characterize sleep features in participants with different levels of insomnia symptoms, monitoring safety and compliance throughout the study period.

Researchers are evaluating the effectiveness of DT-101 in treating adults with Major Depressive Disorder (MDD). This Phase 2 clinical trial compares DT-101 to a placebo to understand its impact on depression symptoms and evaluates the safety and tolerability of the study drug. Participants have recurrent depression diagnosed by the latest DSM manual and are between 18 and 75 years old. Participants will receive either DT-101 or placebo in a double-blind, randomized manner. The study includes physical and neurological examinations, blood and urine sample collections, and clinical assessments to monitor ongoing suitability and gather data on the drug's effects. Blood samples will also be used to study how DT-101 is absorbed and metabolized and to explore genetic factors that may influence treatment response. During the study, participants will visit the clinic every few weeks to undergo general health checks and complete questionnaires. Researchers will measure changes in depression using the Montgomery Åsberg Depression Rating Scale (MADRS) from the start of the study to Day 42. Safety and adherence will be closely monitored throughout the trial, ensuring participant well-being and data accuracy.