Search Clinical Trials
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Testing Immunotherapy With or Without Stereotactic Body Radiation Therapy in Patients With Advanced1
NRG Oncology
Advanced Hepatocellular Carcinoma
Stage III Hepatocellular Carcinoma AJCC v8
Stage IV Hepatocellular Carcinoma AJCC v8
This phase III trial compares the effect of immunotherapy (IO) with stereotactic body
radiation therapy (SBRT) to IO alone in treating patients with liver cancer
(hepatocellular cancer) that may have spread from where it first started to nearby
tissue, lymph nodes, or distant parts of the body (adv1 expand
This phase III trial compares the effect of immunotherapy (IO) with stereotactic body radiation therapy (SBRT) to IO alone in treating patients with liver cancer (hepatocellular cancer) that may have spread from where it first started to nearby tissue, lymph nodes, or distant parts of the body (advanced). The usual approach is treatment with IO-based drug combinations, such as atezolizumab and bevacizumab, durvalumab and tremelimumab, or ipilimumab and nivolumab. IO with monoclonal antibodies, such as durvalumab, tremelimumab, atezolizumab, nivolumab and ipilimumab, may help the body's immune system attack the tumor, and may interfere with the ability of tumor cells to grow and spread. Bevacizumab is in a class of medications called antiangiogenic agents. It works by stopping the formation of blood vessels that bring oxygen and nutrients to tumor. This may slow the growth and spread of tumor cells. Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill cancer cells and shrink tumors. SBRT is a type of external radiation therapy that uses special equipment to position a patient and precisely deliver radiation to tumors in the body (except the brain). The total dose of radiation is divided into smaller doses given over several days. This type of radiation therapy helps spare normal tissue. Giving IO with SBRT may be more effective than IO alone in helping patients with advanced hepatocellular cancer live longer. Type: Interventional Start Date: Feb 2026 |
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Descartes-08 for Children, Adolescents, and Young Adults With Autoimmune Disorders
Cartesian Therapeutics
Childhood-onset Systemic Lupus Erythematous
ANCA-Associated Vasculitis (AAV)
Juvenile Myasthenia Gravis
Juvenile Dermatomyositis
Safety, tolerability and efficacy of Descarte-08 in children, adolescents and young
adults with childhood-onset systemic lupus erythematosus, ANCA-associated vasculitis,
juvenile myasthenia gravis, and juvenile dermatomyositis expand
Safety, tolerability and efficacy of Descarte-08 in children, adolescents and young adults with childhood-onset systemic lupus erythematosus, ANCA-associated vasculitis, juvenile myasthenia gravis, and juvenile dermatomyositis Type: Interventional Start Date: Jan 2026 |
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A Trial to Evaluate the Efficacy and Safety of Ninerafaxstat in Patients With Symptomatic Non-obstr1
Imbria Pharmaceuticals, Inc.
Non-obstructive Hypertrophic Cardiomyopathy
FORTITUDE-HCM is a global, multicenter, double-blind, parallel-group, placebo-controlled
Phase 2b study that will assess the efficacy and safety of ninerafaxstat compared to
placebo on top of Standard of Care in patients with symptomatic nHCM expand
FORTITUDE-HCM is a global, multicenter, double-blind, parallel-group, placebo-controlled Phase 2b study that will assess the efficacy and safety of ninerafaxstat compared to placebo on top of Standard of Care in patients with symptomatic nHCM Type: Interventional Start Date: Oct 2025 |
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EPIK-P4: A Phase II Single-arm Study to Assess the Efficacy, Safety and Pharmacokinetics of Alpelis1
Novartis Pharmaceuticals
PIK3CA-related Overgrowth Spectrum (PROS)
This study is designed to demonstrate the efficacy and assess safety and tolerability of
oral daily alpelisib in participants with PIK3CA-related overgrowth spectrum (PROS). expand
This study is designed to demonstrate the efficacy and assess safety and tolerability of oral daily alpelisib in participants with PIK3CA-related overgrowth spectrum (PROS). Type: Interventional Start Date: Oct 2025 |
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A Clinical Study of Sacituzumab Tirumotecan (Sac-TMT, MK-2870) in People With Breast Cancer (MK-2871
Merck Sharp & Dohme LLC
Breast Neoplasms
Triple Negative Breast Neoplasms
HR Low-Positive/HER2-Negative Breast Neoplasms
Researchers are looking for new ways to treat types of breast cancer that are both:
- High-risk, which means the cancer may have a higher chance of getting worse or
coming back after treatment
- Early-stage, which means the cancer is in the breast or the lymph nodes around the
bre1 expand
Researchers are looking for new ways to treat types of breast cancer that are both: - High-risk, which means the cancer may have a higher chance of getting worse or coming back after treatment - Early-stage, which means the cancer is in the breast or the lymph nodes around the breast The 2 types of breast cancer in this study are triple-negative breast cancer (TNBC) and hormone receptor (HR)-low positive/human epidermal growth factor receptor-2 (HER2) negative breast cancer. These cancers have zero or a low amount of a protein called HER2 and other proteins that attach to the hormones estrogen or progesterone. Sacituzumab tirumotecan (also known as sac-TMT or MK-2870), the study medicine, is a type of targeted therapy. A targeted therapy is a treatment that works to control how specific types of cancer cells grow and spread. The main goals of this study are to learn if people who receive sac-TMT, pembrolizumab, and chemotherapy: - Have fewer cancer cells found in the tumors and lymph nodes removed during surgery compared to those who receive only pembrolizumab and chemotherapy - Live longer without the cancer growing, spreading, or coming back compared to people who receive only pembrolizumab with chemotherapy Type: Interventional Start Date: Jun 2025 |
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Clinical Course Of Disease In Participants With FA-CM
Lexeo Therapeutics
Friedreich Ataxia
Cardiomyopathy
Characteristics and clinical course of disease In participants with cardiomyopathy
associated with Friedreich Ataxia (CLARITY-FA) expand
Characteristics and clinical course of disease In participants with cardiomyopathy associated with Friedreich Ataxia (CLARITY-FA) Type: Observational Start Date: Sep 2025 |
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Embryonal Tumor With Multilayered Rosettes
University of California, San Francisco
Embryonal Tumor With Multilayered Rosettes
Embryonal Tumor With Multilayered Rosettes, Nos
This is an open-label, comprehensive, iterative investigation of evaluating the use of
induction chemotherapy, high-dose chemotherapy, and focal radiation therapy in children
with newly diagnosed Embryonal Tumor With Multilayered Rosettes (ETMR). expand
This is an open-label, comprehensive, iterative investigation of evaluating the use of induction chemotherapy, high-dose chemotherapy, and focal radiation therapy in children with newly diagnosed Embryonal Tumor With Multilayered Rosettes (ETMR). Type: Interventional Start Date: Mar 2025 |
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A Study of TAK-411 in Adults With Chronic Inflammatory Demyelinating Polyradiculoneuropathy (CIDP)
Takeda
Chronic Inflammatory Demyelinating Polyradiculoneuropathy (CIDP)
CIDP is an autoimmune disease. This means that the body's germ fighting (immune) system
attacks itself. In CIDP, the immune system attacks the protective covering around the
nerves called myelin. Over time, these nerves lose their ability to send signals to the
muscles in the body. This leads to mu1 expand
CIDP is an autoimmune disease. This means that the body's germ fighting (immune) system attacks itself. In CIDP, the immune system attacks the protective covering around the nerves called myelin. Over time, these nerves lose their ability to send signals to the muscles in the body. This leads to muscle weakness and loss of sensation in arms and legs among other symptoms. Participants with CIDP can be treated with a protein called immunoglobulin (or IG). TAK-411 is a special type of immune globulin G (hsIgG) that has been chemically changed. It is made from IG that comes from human plasma. This study will test if TAK-411 can decrease inflammation and improve symptoms of CIDP. The main aim of this study is to check how TAK-411 affects the physical functioning of adults with CIDP when compared with results of the placebo group of a historical trial. Participants may be treated with TAK-411 for up to 1 year (51 weeks) and will be followed up for 3 weeks after last dose. During the study, participants may visit their study clinic up to approximately 21 times. Type: Interventional Start Date: May 2025 |
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Open-label Study Comparing AAA817 Versus Standard of Care in the Treatment of Previously Treated PS1
Novartis Pharmaceuticals
Prostate Cancer
This is a Phase II/III study. Patient population is adult participants with PSMA-positive
mCRPC who had treatments with androgen receptor pathway inhibitor (ARPI) and taxane-based
chemotherapy and progressed on or after [177Lu]Lu-PSMA targeted therapy.
Treatment of interest: the investigational tr1 expand
This is a Phase II/III study. Patient population is adult participants with PSMA-positive mCRPC who had treatments with androgen receptor pathway inhibitor (ARPI) and taxane-based chemotherapy and progressed on or after [177Lu]Lu-PSMA targeted therapy. Treatment of interest: the investigational treatment is AAA817 regardless of subsequent anti-neoplastic treatment. The control treatment is investigator's choice of Standard of Care, regardless of subsequent anti-neoplastic treatment Type: Interventional Start Date: Feb 2025 |
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MK2 Inhibitor in Combination With mFOLFIRINOX for Untreated Metastatic Pancreatic Ductal Adenocarci1
Washington University School of Medicine
Metastatic Pancreatic Ductal Adenocarcinoma
Pancreatic Cancer
Cancer of the Pancreas
The investigators hypothesize that MK2 inhibition may improve efficacy of mFOLFIRINOX
chemotherapy for patients with pancreatic ductal adenocarcinoma (PDAC). expand
The investigators hypothesize that MK2 inhibition may improve efficacy of mFOLFIRINOX chemotherapy for patients with pancreatic ductal adenocarcinoma (PDAC). Type: Interventional Start Date: Jun 2025 |
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Window of Opportunity Study of DSP-0390 in Gliomas
Washington University School of Medicine
Glioma, Malignant
IDH Mutation
This study focuses on determining the pharmacokinetic and pharmacodynamic effect of
DSP-0390 in brain and blood from patients with IDH-mutant glioma undergoing tumor
resection. Tissue will be collected during surgical resection. Blood will be drawn at
various time points throughout the 2 weeks of t1 expand
This study focuses on determining the pharmacokinetic and pharmacodynamic effect of DSP-0390 in brain and blood from patients with IDH-mutant glioma undergoing tumor resection. Tissue will be collected during surgical resection. Blood will be drawn at various time points throughout the 2 weeks of treatment. The hypothesis is that DSP-0390 will accumulate in brain tumor tissue at pharmacologically relevant concentrations, and that alterations in cholesterol metabolism driven by mutant IDH will increase susceptibility to DSP-0390 and lead to tumor cell death. Type: Interventional Start Date: Apr 2025 |
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Observation Study in Patients Age 0-5 Years With LAMA2-related Congenital Muscular Dystrophy
Nationwide Children's Hospital
LAMA2-MD \(Merosin Deficient Congenital Muscular Dystrophy, MDC1A\)
The goal of this observational study is to understand how young children with
LAMA2-related dystrophy move and change over time. We will also learn about how this
condition impacts other body systems.
Participants will undergo:
- Neuromuscular assessments
- Blood collections
- Swallowi1 expand
The goal of this observational study is to understand how young children with LAMA2-related dystrophy move and change over time. We will also learn about how this condition impacts other body systems. Participants will undergo: - Neuromuscular assessments - Blood collections - Swallowing and breathing assessments - Questionnaires Type: Observational Start Date: May 2025 |
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Measurable Residual Disease-Guided Post-Transplant Elranatamab Maintenance
Washington University School of Medicine
Multiple Myeloma
This study evaluates an individualized approach combining highly active maintenance
treatment with elranatamab with peripheral blood-based clonotypic measurable residual
disease (MRD) testing in patients with newly diagnosed multiple myeloma. The overall goal
is to generate efficacy data for a pers1 expand
This study evaluates an individualized approach combining highly active maintenance treatment with elranatamab with peripheral blood-based clonotypic measurable residual disease (MRD) testing in patients with newly diagnosed multiple myeloma. The overall goal is to generate efficacy data for a personalized maintenance approach using bone marrow-based MRD testing (clonoSEQ) to guide post-autologous hematopoietic cell transplant (AHCT) maintenance with elranatamab for this patient population. Type: Interventional Start Date: Dec 2024 |
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Zunsemetinib in Combination With Capecitabine in Patients With Hormone Receptor-Positive and HER2-N1
Washington University School of Medicine
Hormone Receptor Positive HER-2 Negative Metastatic Breast Cancer
This is a phase Ib/II study evaluating the safety and efficacy of zunsemetinib (ATI-450)
with capecitabine in patients with hormone receptor-positive and HER2-negative
(HR+/HER2-) metastatic breast cancer (MBC). expand
This is a phase Ib/II study evaluating the safety and efficacy of zunsemetinib (ATI-450) with capecitabine in patients with hormone receptor-positive and HER2-negative (HR+/HER2-) metastatic breast cancer (MBC). Type: Interventional Start Date: Jan 2025 |
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Study of Biodistribution, Metabolism, Excretion and Brain Uptake11C-M503
University of Pennsylvania
Tauopathies
The current protocol is to determine the biodistribution, metabolism, excretion and brain
uptake of 11C-M503. The goal of this radiotracer is to quantify alpha-synuclein that is
abnormally deposited in the brain of people with Parkinson's disease (PD). Investigators
will compare uptake in participa1 expand
The current protocol is to determine the biodistribution, metabolism, excretion and brain uptake of 11C-M503. The goal of this radiotracer is to quantify alpha-synuclein that is abnormally deposited in the brain of people with Parkinson's disease (PD). Investigators will compare uptake in participants with PD versus participants with multiple system atrophy (MSA) and progressive supranuclear palsy (PSP), as well as non-Parkinsonism volunteers. This multicenter project funded by an NIH U19 grant, is centered at U Pennsylvania (Penn, Grant PI: Robert Mach) in collaboration with U Pittsburgh (Pitt) (non-clinical site) Yale U, U of California at San Francisco (UCSF) and Washington University in St. Louis (WU). The University of Pennsylvania will act as the sIRB for this multi-center human subjects project and participants will be recruited from all sites. Type: Interventional Start Date: Feb 2024 |
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A Study to Determine if BHV-7000 is Effective and Safe in Adults With Refractory Focal Onset Epilep1
Biohaven Therapeutics Ltd.
Focal Epilepsy
The purpose of this study is to determine whether BHV-7000 is effective in the treatment
of refractory focal epilepsy. expand
The purpose of this study is to determine whether BHV-7000 is effective in the treatment of refractory focal epilepsy. Type: Interventional Start Date: Mar 2024 |
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An Open-label Study Comparing Lutetium (177Lu) Vipivotide Tetraxetan Versus Observation in PSMA Pos1
Novartis Pharmaceuticals
Oligometastatic Prostate Cancer (OMPC)
The purpose of this study is to evaluate the efficacy and safety of lutetium (177Lu)
vipivotide tetraxetan (AAA617) in participants with oligometastatic prostate cancer
(OMPC) progressing after definitive therapy to their primary tumor. The data generated
from this study will provide evidence for t1 expand
The purpose of this study is to evaluate the efficacy and safety of lutetium (177Lu) vipivotide tetraxetan (AAA617) in participants with oligometastatic prostate cancer (OMPC) progressing after definitive therapy to their primary tumor. The data generated from this study will provide evidence for the treatment of AAA617 in early-stage prostate cancer patients to control recurrent tumor from progressing to fatal metastatic disease while preserving quality of life by delaying treatment with androgen deprivation therapy (ADT). Type: Interventional Start Date: Mar 2024 |
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CA-4948 Added to Standard Chemotherapy to Treat Metastatic or Unresectable Pancreatic Cancer
National Cancer Institute (NCI)
Metastatic Pancreatic Ductal Adenocarcinoma
Stage III Pancreatic Cancer AJCC v8
Stage IV Pancreatic Cancer AJCC v8
Unresectable Pancreatic Ductal Adenocarcinoma
This phase I trial tests the safety, side effects, and best dose of emavusertib (CA-4948)
in combination with gemcitabine and nab-paclitaxel in treating patients with pancreatic
ductal adenocarcinoma that has spread from where it first started (primary site) to other
places in the body (metastatic)1 expand
This phase I trial tests the safety, side effects, and best dose of emavusertib (CA-4948) in combination with gemcitabine and nab-paclitaxel in treating patients with pancreatic ductal adenocarcinoma that has spread from where it first started (primary site) to other places in the body (metastatic) or cannot be removed by surgery (unresectable). CA-4948 is in a class of medications called kinase inhibitors. It works by blocking the action of abnormal proteins called interleukin-1 receptor-associated kinase 4 (IRAK4) and FMS-like tyrosine kinase 3 (FLT3) that signal cells to multiply. This may help keep cancer cells from growing. The usual approach for patients with pancreatic ductal adenocarcinoma is treatment with chemotherapy drugs gemcitabine and nab-paclitaxel. Gemcitabine is a chemotherapy drug that blocks the cells from making DNA and may kill cancer cells. Paclitaxel is in a class of medications called anti-microtubule agents. It stops cancer cells from growing and dividing and may kill them. Nab-paclitaxel is an albumin-stabilized nanoparticle formulation of paclitaxel which may have fewer side effects and work better than other forms of paclitaxel. Giving CA-4948 in combination with gemcitabine and nab-paclitaxel may shrink or stabilize metastatic or unresectable pancreatic ductal adenocarcinoma. Type: Interventional Start Date: Jun 2023 |
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Evaluate REC-4881 in Participants With Familial Adenomatous Polyposis (FAP)
Recursion Pharmaceuticals Inc.
Familial Adenomatous Polyposis
This is a multicenter, two-part trial in participants with FAP. expand
This is a multicenter, two-part trial in participants with FAP. Type: Interventional Start Date: Jul 2023 |
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Testing the Use of Ado-Trastuzumab Emtansine Compared to the Usual Treatment (Chemotherapy With Doc1
NRG Oncology
Metastatic Salivary Gland Carcinoma
Recurrent Salivary Gland Carcinoma
Stage III Major Salivary Gland Cancer AJCC v8
Stage IV Major Salivary Gland Cancer AJCC v8
Unresectable Salivary Gland Carcinoma
This phase II trial compares the effect of usual treatment of docetaxel chemotherapy plus
trastuzumab, to ado-emtansine (T-DM1) in patients with HER2-postive salivary gland cancer
that has come back (recurrent), that has spread from where it first started (primary
site) to other places in the body,1 expand
This phase II trial compares the effect of usual treatment of docetaxel chemotherapy plus trastuzumab, to ado-emtansine (T-DM1) in patients with HER2-postive salivary gland cancer that has come back (recurrent), that has spread from where it first started (primary site) to other places in the body, or cannot be removed by surgery (unresectable). This trial is also testing how well trastuzumab deruxtecan works in treating patients with HER2-low recurrent or metastatic salivary gland cancer. Trastuzumab is a form of targeted therapy because it works by attaching itself to specific molecules (receptors) on the surface of cancer cells, known as HER2 receptors. When trastuzumab attaches to HER2 receptors, the signals that tell the cells to grow are blocked and the cancer cell may be marked for destruction by body's immune system. Trastuzumab emtansine contains trastuzumab, linked to a chemotherapy drug called emtansine. Trastuzumab attaches to HER2 positive cancer cells in a targeted way and delivers emtansine to kill them. Trastuzumab deruxtecan is a monoclonal antibody called traztuzumab, linked to a chemotherapy drug called deruxtecan. Trastuzumab is a form of targeted therapy because it attaches to specific molecules (receptors) on the surface of cancer cells, known as HER2 receptors and delivers deruxtecan to kill them. Docetaxel is in a class of medications called taxanes. It stops cancer cells from growing and dividing and may kill them. Trastuzumab emtansine may work better compared to usual treatment of chemotherapy with docetaxel and trastuzumab or trastuzumab deruxtecan in treating patients with recurrent, metastatic or unresectable salivary gland cancer. Type: Interventional Start Date: Mar 2023 |
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Pediatric Influence of Cooling Duration on Efficacy in Cardiac Arrest Patients (P-ICECAP)
University of Michigan
Cardiac Arrest, Out-Of-Hospital
Hypothermia, Induced
Hypoxia-Ischemia, Brain
This is a multicenter trial to establish the efficacy of cooling and the optimal duration
of induced hypothermia for neuroprotection in pediatric comatose survivors of cardiac
arrest.
The study team hypothesizes that longer durations of cooling may improve either the
proportion of children that at1 expand
This is a multicenter trial to establish the efficacy of cooling and the optimal duration of induced hypothermia for neuroprotection in pediatric comatose survivors of cardiac arrest. The study team hypothesizes that longer durations of cooling may improve either the proportion of children that attain a good neurobehavioral recovery or may result in better recovery among the proportion already categorized as having a good outcome. Type: Interventional Start Date: Aug 2022 |
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CA-4948 in Combination With FOLFOX/PD-1 Inhibitor +/- Trastuzumab for Untreated Unresectable Gastri1
Washington University School of Medicine
Gastric Cancer
Esophageal Cancer
Stomach Cancer
Esophagus Cancer
Gastroesophageal Junction Cancer
This is a phase I trial of CA-4948 in combination with FOLFOX/PD-1 inhibitor with or
without trastuzumab for unresectable gastric, GEJ, and esophageal cancer. During the Dose
Escalation portion of the study, different dose levels of CA-4948 in combination with
FOLFOX/nivolumab will be evaluated by1 expand
This is a phase I trial of CA-4948 in combination with FOLFOX/PD-1 inhibitor with or without trastuzumab for unresectable gastric, GEJ, and esophageal cancer. During the Dose Escalation portion of the study, different dose levels of CA-4948 in combination with FOLFOX/nivolumab will be evaluated by BOIN algorithm. Dose Expansion will include Cohorts A and B. Expansion Cohort A will enroll up to 12 patients with HER2 negative gastric, GEJ, and esophageal cancer at the expansion dose of CA-4948 determined during Dose Escalation and will use the same treatment regimen of FOLFOX/nivolumab. Expansion Cohort B will investigate CA-4948 at the dose determined during Dose Escalation in combination with FOLFOX/pembrolizumab and trastuzumab in up to 12 patients with HER2 positive disease; however, the initial 6 patients will be considered safety lead-in to confirm the safety and tolerability of this combination; if determined to be safe, an additional 6 patients will be enrolled for a total of 12 in Cohort B. Type: Interventional Start Date: Jun 2023 |
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Individualized Treatment Plan in Children and Young Adults With Relapsed Medulloblastoma and Ependy1
University of California, San Francisco
Medulloblastoma
Medulloblastoma, Childhood
Medulloblastoma Recurrent
Ependymoma
Ependymoma Malignant
The current study will use a new treatment approach based on the molecular
characteristics of each participant's tumor. The study will test the feasibility in the
pilot phase of performing real-time drug screening on tissue taken during surgery in
patients with relapsed medulloblastoma or ependymom1 expand
The current study will use a new treatment approach based on the molecular characteristics of each participant's tumor. The study will test the feasibility in the pilot phase of performing real-time drug screening on tissue taken during surgery in patients with relapsed medulloblastoma or ependymoma and of having a specialized tumor board assign a treatment plan based on the results of this screening and genomic sequencing. The aim of this trial is to allow every child and young adult with relapsed medulloblastoma and ependymoma to receive the most effective and least toxic therapies currently available and will pave the way for improved understanding and treatment of these tumors in the future. Moreover, if successful, it could serve as a paradigm for personalized medicine programs for other types of cancer. Type: Interventional Start Date: Feb 2022 |
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PET Imaging CCR2 in Lung Inflammation
Washington University School of Medicine
Lung Inflammation
The primary objective of this study is to assess the lung distribution of the Positron
Emission Tomography (PET) imaging radiotracer Cu-DOTA-ECL1i, which binds to the specific
population inflammatory cells, in patients with fibrotic lung diseases. This objective
includes sub-studies to assess radio1 expand
The primary objective of this study is to assess the lung distribution of the Positron Emission Tomography (PET) imaging radiotracer Cu-DOTA-ECL1i, which binds to the specific population inflammatory cells, in patients with fibrotic lung diseases. This objective includes sub-studies to assess radiotracer distribution in the lung, the reproducibility of PET scans and the relationship of the scan to distribution of inflammatory cells in human lung tissue. The overall goal is to assess the potential of the radiotracer to track inflammatory cells in lung diseases. Type: Interventional Start Date: Feb 2018 |
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NMDA Receptor Antagonist Nitrous Oxide Targets Affective Brain Circuits
Washington University School of Medicine
Depressive Disorder, Major
Depressive Disorder, Treatment-Resistant
Most clinical major depression responds to standard treatments (medication and
psychotherapy); however, a significant subset of depressed patients (15-20%) do not
respond to these treatments and are referred to as treatment-resistant major depression
(TRMD). New treatments for TRMD are needed, and1 expand
Most clinical major depression responds to standard treatments (medication and psychotherapy); however, a significant subset of depressed patients (15-20%) do not respond to these treatments and are referred to as treatment-resistant major depression (TRMD). New treatments for TRMD are needed, and one promising line of research are drugs known as N-methyl-D-aspartate (NMDA) glutamate receptor antagonists. In a recent pilot study, our group demonstrated that the NMDA antagonist nitrous oxide is effective in TRMD. This application proposes to take the next important step in understanding how nitrous oxide exerts its effects in the human brain by using state-of-the-art brain neuroimaging (functional connectivity magnetic resonance imaging) in a group of non-depressed, healthy volunteers and comparing the results to a group of TRMD patients. This study involves exposing approximately 25 non-depressed healthy participants and 25 TRMD participants to nitrous oxide and a placebo gas, to compare their brain images before and after each of the inhalation sessions. Sessions will be separated by at least one month to prevent treatment effects from carrying over into the following session. All willing and eligible subjects will undergo up to six functional connectivity MRI scans, and two inhalation sessions. Functional imaging in the brain will allow us to trace the interconnections between various parts of the brain, including those involved with emotion and depression. Other procedures will involve screening materials to ensure safety of the participants before beginning the study (i.e. no MRI scan contraindications) and that subjects meet eligibility criteria to being in the targeted age range, depression/non-depressed state, neurological disorder history, and no medication exclusions. Type: Interventional Start Date: Jan 2017 |