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Suggestions within category "Infections, Immune System & Allergies"


34 Study Matches

An Efficacy, Safety, Tolerability, Immunogenicity, and Lot-Consistency Clinical Trial of a 6-Valent OspA-Based Lyme Disease Vaccine (VLA15) (VALOR)

The main purpose of this clinical study is to evaluate a 6-valent OspA-based Lyme disease vaccine (VLA15) for prevention of Lyme disease within North America and Europe. Approximately 9,000 healthy participants 5 years and older will be recruited from areas with high levels of endemic Lyme disease to receive VLA15 or placebo (an inactive substance consisting of saltwater). Each participant will have about a 50% chance of receiving VLA15 and about a 50% chance of receiving placebo. A subset of participants will receive VLA15 from 3 different lots or placebo (1:1:1:3 ratio) to assess lot equivalence. Participants will receive a 3-dose primary vaccination series at about 0, 2, and 5 to 9 months and then receive a booster dose about 12 months later. Vaccination of participants will occur at a time of year such that the primary series is completed before the peak Lyme disease season followed by a booster dose just prior to the beginning of the second Lyme disease season. Comparison will be made between the Lyme disease cases of people receiving the study vaccine to those of the people who are not. This will help us determine if the study vaccine is safe and effective. If enrolled, participants will need to visit the research site at least 7 times during the study. There will also be at least 5 telephone contacts. It is expected that each participant will take part in this study for up to about 2 and a half years.
Robert Striker
All
5 Years and over
Phase 3
This study is also accepting healthy volunteers
NCT05477524
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Key
Inclusion Criteria:

• Participants who reside in areas with endemic Lyme disease and who lead lifestyles that put them at increased risk for Lyme disease. For example, this could include, but not be limited to:
• Individuals who work in B burgdorferi-infected/tick-infested areas, especially those with occupations that may be associated with higher risk of exposure, such as landscaping, forestry, and wildlife and parks management.
• Individuals who pursue recreational activities such as hiking, camping, fishing, hunting, jogging, or gardening in such areas.
• Individuals who live on land plots with tree lines and come into contact with these trees regularly.
• Individuals who have dogs that regularly are outdoors and frequently return with attached ticks.
• Individuals who participate in activities in areas with tall grass, smaller wooded areas beside forests, open fields, lakesides, and riversides. Key
Exclusion Criteria:

• Any female participants that are pregnant (or have a positive urine pregnancy test) or are breastfeeding.
• Any diagnosis of Lyme disease within the past 3 months.
• Any history of Lyme carditis, neuroborreliosis, or arthritis, or other disseminated Lyme disease regardless of when diagnosed.
• Known tick bite within the past 4 weeks.
• Newly developed or unstable underlying conditions that may interfere with the assessment of Lyme disease, including but not limited to chronic arthralgia/arthritis, second/third-degree AV heart block, chronic pain syndromes, and chronic skin conditions that reduce the ability to detect cutaneous manifestations of Lyme disease.
• Any unstable autoimmune condition with a manifestation (eg, arthritic and neurologic) that may interfere with the assessment of Lyme disease.
• Chronic systemic doxycycline or minocycline or other tetracycline class drug use for acne or any other chronic suppressive antibiotics used to treat other conditions.
Lyme Disease, Other, Healthy Volunteers
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Evaluation of Long-Term Safety and Efficacy of Vanzacaftor/Tezacaftor/Deutivacaftor in Cystic Fibrosis Participants 1 Year of Age and Older

The purpose of this study is to evaluate the long-term safety, tolerability, and efficacy of vanzacaftor/tezacaftor/deutivacaftor (VNZ/TEZ/D-IVA) in participants with cystic fibrosis (CF).
Hara Levy, MD
All
1 Year and over
Phase 3
This study is NOT accepting healthy volunteers
NCT05844449
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Inclusion Criteria:

• Participants who have completed study drug treatment in the parent study (VX21-121-105; NCT Number: NCT05422222) Key
Exclusion Criteria:

• Hepatic cirrhosis with portal hypertension, moderate hepatic impairment, or severe hepatic impairment that might pose an additional risk in administering study drug
• History of solid organ, hematological transplantation, or cancer
• History of drug intolerance in the parent study Other protocol defined Inclusion/Exclusion criteria may apply.
Cystic Fibrosis, Cystic fibrosis, Other, Lung & Respiratory
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18F-FLUC-CEST PET/MR in Patients With Brain Mets

The goal of this clinical trial is to use new imaging methods to help in finding out whether the imaging shows that there is a tumor in people with a brain metastasis. The main question it aims to answer is whether positron emission tomography (PET) and magnetic resonance imaging (MRI) find cancerous tissue better than other types of imagining. Participants will undergo a single PET/MRI scan, followed by a separate MRI scan with a tracer. Study participation will last about 3 hours.
Michael Veronesi
All
18 Years and over
Phase 3
This study is NOT accepting healthy volunteers
NCT06159335
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Inclusion Criteria:

• Age 18 years or older
• Able and willing to provide informed consent
• Has a brain metastasis diagnosis with at least one single visible contrast enhancing metastatic lesion on brain MRI
• Received at least one immune checkpoint inhibitor for treatment of the malignancy in the past 6 months
• Any other concurrent therapy or prior administered therapy, which would include prior surgery, radiation, immunotherapy, or chemotherapy are not an exclusion.
• Has had at least one previous standard-of-care MRI imaging within the past 60 days for assessment of disease location and extent with increasing enhancement where the question of tumor recurrence versus treatment related change are a clinical question.
• Be able to lie still for 30-60 minutes during the imaging procedure
• Willing and able to undergo PET/MRI
Exclusion Criteria:

• Subject unable or unwilling to provide informed consent
• Subject is pregnant
• Subject with contraindication(s) to or inability to undergo a PET or MRI
• Known allergy to 18F-Fluciclovine or any of its excipients
Brain Metastasis, Radiation Therapy, Immunotherapy, Active, Brain and Nervous System, Brain/Central Nervous System
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Comparison of Microglial Activation in Severe Asthma and Healthy Controls (MAIA-SC)

The goal of this clinical trial is to learn about how asthma influences brain function. The main questions it aims to answer are: - How airway inflammation in asthma affects the brain; and, - Whether airway inflammation in asthma is related to symptoms of depression and anxiety Over the course of 3 visits, participants will: - Complete questionnaires - Complete computer tasks - Undergo allergy skin test and breathing tests - Give two blood samples - Give a sputum sample - Complete brain imaging scans Researchers will compare results between participants with asthma, and participants who do not have asthma.
Melissa Rosenkranz, PhD
All
18 Years to 75 Years old
N/A
This study is also accepting healthy volunteers
NCT06299592
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Inclusion Criteria:

• Ability to understand and the willingness to sign a written informed consent document
• Individuals with no health concerns that might affect the outcome of the study
• Age 18-75 years of age
• Ability to tolerate a simulated MRI brain scanning session
• In the opinion of the investigator, capable and willing to grant written informed consent and cooperate with study procedures and requirements
• High-affinity TSPO-binding genotype. Mixed (high/low) binding-affinity genotype may be included at PIs discretion
• For participants with severe asthma:
• Physician diagnosis of asthma for at least six months prior to screening (can be determined at the discretion of an asthma/allergy physician member of the study team)
• Severe asthmatics must meet the ATS definition of severe asthma and/or be currently receiving a GINA 5 therapy (or greater), which may include ongoing use of currently approved biologic immunomodulators
Exclusion Criteria:

• Current smoker (defined as more than 0.5 pack per week for the past 6 months and any smoking within two weeks of study procedures) or has a smoking history exceeding 5 pack years within the last 10 years
• Currently receiving immunotherapy
• Use of psychotropic medication that might affect function of neurocircuitry implicated in our hypotheses (at the discretion of the PI/Co-I)
• Inability to hold medications detailed in the medication hold schedule
• Needle phobia or claustrophobia
• Major health problems such as autoimmune disease, history of carotid stenosis, heart disease, uncontrolled hypertension, or lung diseases other than asthma, history of significant arrhythmias, and any of the following in the last 6 months: stroke/TIA, myocardial infarction, stent placement, or acute coronary syndrome. The listed health problems are definitively exclusionary, but decisions regarding major health problems not listed will be based upon the judgment of the investigator
• Use of biologic medication that might affect signaling pathways under investigation (at the discretion of the PI/Co-I)
• Pre-existing chronic infectious disease
• Scheduled use of non-selective beta-blockers prior to each study visit.
• Use of an investigational drug within 30 days of entering the study. This criterion will be reviewed on a case by case basis by the PI/Co-I to determine appropriate washout period. Appropriate wash out period may be greater than 30 days depending on the half-life of the investigational drug. Participants may be eligible for study participation after completing the washout period designated by the PI or Co-I (physician only).
• Any MRI incompatibility as determined by most current MRI screening form
• History of a diagnosed bipolar disorder, schizophrenia, or schizoaffective disorder
• History of serious head trauma or seizure disorder (can be included at the discretion of the PI or Co-I)
• Unable, in the judgement of the investigator, to comply with directions and/or tolerate the procedures required for participation in this study
• Pregnant or breast-feeding or has a planned pregnancy during the course of the study
• Any other medical condition or disease that would impact participant safety or data integrity in the opinion of the PI/CO-I
Asthma, Other, Infections, Immune System & Allergies, Healthy Volunteers
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