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Suggestions within category "Infections, Immune System & Allergies"


11 Study Matches

Treatment of Cytomegalovirus (CMV) Infections With Viral-Specific T Cells

The present trial will consist of the treatment of 20 pediatric and adult Hematopoietic Stem Cell Transplantation (HSCT) recipients or immunocompromised participants diagnosed with opportunistic Cytomegalovirus (CMV) infections with virus-specific, antigen-selected T-cells. CMV-specific T-cells will be isolated from donor leukapheresis products using the CliniMACS® Prodigy. Prior studies on transfer of CMV specific T-cells have been shown to be safe and efficacious in the treatment of CMV infections. The main trial objective is to evaluate the feasibility and safety of CMV-specific T-cell transfer in adult and pediatric participants suffering from CMV infections or reactivation following HSCT or due to other immunocompromised states (e.g.; primary immunodeficiency, cytotoxic therapy). Participants will be followed for one year.
Christian Capitini, MD
All
1 Month and over
Phase 1
This study is NOT accepting healthy volunteers
NCT03798301
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Inclusion Criteria:
1. Adult or pediatric patient suffering from CMV reactivation/infections following HSCT or due to other immunocompromised states (e.g.; primary immunodeficiency, cytotoxic therapy).
• CMV reactivation/viremia defined as positive (>500 copies/ml) CMV qPCR and/or
• Presence of symptoms secondary to CMV infection or evidence of invasive CMV infection (e.g. pneumonitis, colitis) AND
• Patients must have ONE OF THE FOLLOWING CRITERIA:
• Absence of an improvement of viral load after ≥ 14 days of antiviral therapy with ganciclovir, valganciclovir or foscarnet (decrease by at least 1 log, i.e. 10-fold), or
• New, persistent and/or worsening CMV-related symptoms, signs and/or markers of end organ compromise while on antiviral therapy with ganciclovir, valganciclovir or foscarnet, or
• Have contraindications or experience adverse effects of antiviral therapy with ganciclovir, valganciclovir or foscarnet, or
• Known resistance to ganciclovir and/or foscarnet based on molecular testing. 2. Recipients of an allogeneic HSCT must be 28 days after stem cell infusion at the time of T-cell transfer. 3. Written informed consent given by patient or legal representative. 4. Minimum patient age 1 month. 5. Minimum weight 7 lbs. 6. Female patients of childbearing age with negative pregnancy tests. 7. Patient Karnofsky/Lansky Performance Status >30%. 8. Donor eligible based on FACT infectious screening requirements.
Exclusion Criteria:
1. Patient with acute GVHD > grade 2 or active moderate or severe chronic GVHD at time of T-cell transfer 2. Patient receiving steroids (>1.0 mg/kg body weight (BW) prednisone equivalent) at the time of T-cell transfer 3. Patient received allogeneic HSCT less than 28 days prior to T-cell transfer 4. Patient treated with donor lymphocyte infusion (DLI) within 28 days prior to T-cell transfer 5. Patient treated with Thymoglobulin (ATG), Alemtuzumab or T-cell immunosuppressive monoclonal antibodies within 28 days. 6. Patient with organ dysfunction or failure as determined by Karnofsky (patients >16 years) or Lansky (patients ≤16 years) score ≤30% (Appendix 5) 7. Patients with CMV retinitis 8. Concomitant enrollment in another clinical trial with endpoints interfering with this study 9. Any medical condition which could compromise participation in the study according to the investigator's assessment 10. Known HIV infection 11. Female patient who is pregnant or breast-feeding, or adult of reproductive potential not willing to use an effective method of birth control during study treatment. Note: Women of childbearing potential must have a negative serum pregnancy test at study entry. 12. Patients unwilling or unable to comply with the protocol or unable to give informed consent. Donor Eligibility: The original donor will be the first choice as source of T cells. If the original donor is not available for donation (such as NMDP donor, cord blood unit, or related donor not available) of peripheral mononuclear cells or does not meet all donor eligibility criteria (including donor selection criteria based on University of Wisconsin
•Madison Standard Operating Procedures for the selection of allogeneic donors), alternative related donors will be selected, with preference for those who have full HLA matching in 6/6 loci over those with partial HLA matching (≥ 3/6 HLA loci). 1. All donors must be ≥ 18 years old, available, CMV IgG positive, eligible and capable of undergoing a single standard 2 blood volume leukapheresis. If original HSCT donor is not available, CMV IgG negative or ineligible, a CMV IgG positive fully matched or haploidentical family donor will be used. 2. Related donors must be at least partially HLA compatible, matching with recipient in at least 3/6 HLA loci (HLA-A, HLA-B and HLA-DRB1 will be considered for this). 3. Donors must be CMV IgG seropositive. 4. Donors must show CMV T-cell activation after incubation with MACS GMP PepTivator Peptide Pools of CMV pp65 before undergoing leukapheresis. 5. Donor must meet the criteria for donor selection defined in the Standard Operating Procedures of the University of Wisconsin Hospitals and Clinics Stem Cell Transplant Program and in FACT standards.
Unknown Sites, CMV Infection, Cytomegalovirus Infections, CMV Viremia, Opportunistic Infections
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Childhood Allergy and the Neonatal Environment (CANOE)

The purpose of this research study is to study the relationship between childhood asthma, allergies, and early-life environmental factors that may cause childhood asthma and allergies. Previous birth cohort studies have found early-life environmental factors such as allergies, pollutants, viruses and bacteria have all contributed to the development of asthma and allergies. Investigators are doing this research because there continues to be a strong need to understand the root causes of asthma and allergies. The CANOE study is an observational cohort study, which means investigators are not asking participants or participant's child to change their medications and investigators will not be giving participants or participant's child a study drug.
Anne Singh
All
Not specified
NA
This study is NOT accepting healthy volunteers
NCT04215783
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Inclusion Criteria:
1. History of or concurrent asthma or allergic rhinitis (hay fever) in either biologic parent or sibling (at least one shared biological parent) by parental report. The presence of paternal or sibling allergy or asthma will be ascertained by maternal report. 2. Maternal age greater than or equal to 18 years at the time of study enrollment.
Exclusion Criteria:
1. Maternal HIV infection at time of delivery. 2. Plans for the family to move out of the geographic area during the period of the study. 3. Does not speak English. 4. Current maternal use of progesterone during pregnancy to prevent preterm birth.
• Progesterone use is only an exclusion if currently being taken at time of enrollment for preterm birth. Previous use to prevent preterm birth or use at any time for other indications is allowed. 5. Pregnancy is a result of an embryo donor (egg and sperm donor pregnancies are permitted). 6. Past or current medical problems or findings from physical examination or laboratory testing which, in the opinion of the investigator or designee, may pose additional risks from participation in the study, may interfere with the participant's ability to comply with study requirements or that may impact the quality or interpretation of the data obtained from the study.
Asthma in Children, Allergy, Allergic rhinitis due to animal (cat) (dog) hair and dander, Allergic rhinitis due to food, Allergic rhinitis due to pollen, Asthma, Other, Infections, Immune System & Allergies
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Pharmacokinetics, Pharmacodynamics, and Safety Profile of Understudied Drugs Administered to Children Per Standard of Care (POPS) (POPS or POP02)

The study investigators are interested in learning more about how drugs, that are given to children by their health care provider, act in the bodies of children and young adults in hopes to find the most safe and effective dose for children. The primary objective of this study is to evaluate the PK of understudied drugs currently being administered to children per SOC as prescribed by their treating provider.
Maria Stanley
All
0 Years to 20 Years old
NA
This study is also accepting healthy volunteers
NCT04278404
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Inclusion Criteria:
1. Participant is < 21 years of age 2. Parent/ Legal Guardian/ Adult Participant can understand the consent process and is willing to provide informed consent/HIPAA: 3. (a) Participant is receiving one or more of the study drugs of interest at the time of enrollment or (b) Participant is NOT receiving one or more of the study drugs of interest but is SARS-COV-2 positive within 60 days prior to enrollment
Exclusion Criteria:
1. Participant has a known pregnancy Below exclusion criteria apply only to: Participants receiving one or more of the study drugs of interest at the time of enrollment, DOI administration or PK sampling: (Refer to DOI specific appendices for details on enrollment cohort specifications and additional eligibility criteria) 2. Has had intermittent dialysis within previous 24 hours 3. Has had a kidney transplant within previous 30 days 4. Has had a liver transplant within previous 1 year 5. Has had a stem cell transplant within previous 1 year 6. Has had therapeutic hypothermia within previous 24 hours 7. Has had plasmapheresis within the previous 24 hours 8. Has a Ventricular Assist Device 9. Has any condition which would make the participant, in the opinion of the investigator, unsuitable for the study
Coronavirus Infection (COVID-19), Pulmonary Arterial Hypertension, Urinary Tract Infections in Children, Hypertension, Pain, Hyperphosphatemia, Primary Hyperaldosteronism, Edema, Hypokalemia, Heart Failure, Hemophilia, Menorrhagia, Insomnia, Pneumonia, Skin Infection, Arrythmia, Asthma in Children, Bronchopulmonary Dysplasia, Adrenal Insufficiency, Fibrinolysis, Hemorrhage, Attention Deficit Hyperactivity Disorder, Multisystem Inflammatory Syndrome in Children (MIS-C), Kawasaki Disease, Coagulation Disorder, Down Syndrome, Other
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Comparison of Two- Versus Three-antibiotic Therapy for Pulmonary Mycobacterium Avium Complex Disease (MAC2v3)

NTM therapy consists of a multi-drug macrolide based regimen for 18-24 months. Treated patients frequently experience debilitating side effects, and many patients delay the start of antibiotic treatment due to these risks. Common side effects include nausea, diarrhea, and fatigue, and rare but serious toxicities include ocular toxicity, hearing loss, and hematologic toxicity. To date, most of the evidence underlying the current treatment recommendations has come from observational studies in which either a macrolide has been combined with rifampin and ethambutol, or in some cases combined with ethambutol alone. The proposed study will answer whether a third drug is necessary or whether taking two drugs can increase tolerability without a substantial loss of efficacy.
Christopher Saddler
All
18 Years and over
Phase 2/Phase 3
This study is NOT accepting healthy volunteers
NCT03672630
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Inclusion Criteria:

• Culture positive pulmonary MAC meeting ATS/IDSA disease criteria
• Age over 18 years
• Ability to provide informed consent
Exclusion Criteria:

• Fibrocavitary disease
• Planned surgery for MAC disease
• Patients who have cumulatively taken 6 weeks or more of multi-drug antimicrobial treatment for MAC
• Patients who are currently taking or have taken multi-drug antimicrobial treatment for NTM within the prior 30 days
• Diagnosis of Cystic fibrosis
• Diagnosis of HIV
• History of solid organ or hematologic transplant
• Significant drug-drug interaction not clinically manageable in the opinion of the investigator
• Contraindication to any component of the study treatment regimen
Mycobacterium Avium Complex, Nontuberculous Mycobacterium Infection, Infection due to other mycobacteria, Other, Infections, Immune System & Allergies
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Systems Biology of Early Atopy (SUNBEAM)

The goal of this study is to establish a birth cohort that collects prenatal and early life biosamples and environmental samples and rigorously phenotypes young children for food allergy and Atopic Dermatitis (AD) to identify prenatal and early life markers of high risk for food allergy and AD, as well as biological pathways (endotypes) that result in these conditions. Primary Objectives: - To study the role and interrelationships of established and novel clinical, environmental, biological, and genetic prenatal and early-life factors in the development of allergic diseases through age 3 years, with an emphasis on atopic dermatitis and food allergy - To apply systems biology to identify mechanisms and biomarkers underlying the development of food allergy, atopic dermatitis, and their endotypes - To collect, process, and assay or store environmental and biological samples for current and future use in the study of allergic disease development
James Gern
All
0 Years and over
NA
This study is also accepting healthy volunteers
NCT04798079
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Inclusion Criteria:
Pregnant Women- Pregnant women who meet all of the following criteria are eligible for enrollment as study participants: 1. Age 18 years or older 2. Able to understand the oral and written instructions associated with study visits and procedures and provide informed consent 3. Pregnant at any stage 4. Planning to give birth at a study-site designated center 5. Agrees to enroll offspring into the study at birth 6. In the case of multiple gestation, agrees to enroll only one child who will be selected by randomized birth order Biological Fathers- Biological fathers who meet all of the following criteria are eligible for enrollment as study participants: 1. Age 18 years or older 2. Able to understand the oral and written instructions associated with study visits and procedures and provide informed consent
Exclusion Criteria:
Pregnant Women- Pregnant women who meet any of these criteria are not eligible for enrollment: 1. Inability or unwillingness to comply with study protocol 2. Serious pregnancy complication (in the judgement of the investigator) prior to enrollment 3. Fetus has a major chromosomal anomaly 4. Plans to move and would not be available for in-person visits at a study site 5. Plans to give up her child for adoption at birth 6. Pregnancy is the result of an egg donation Infants- Infants who meet any of these criteria are not eligible for enrollment: 1. Delivered earlier than 34 weeks of gestation 2. Sibling already enrolled 3. Born with a significant birth defect or medical condition, and in the judgment of the investigators, participation is not in the infant's best interest Biological Father- 1. Biological fathers who are unable or unwilling to comply with the study protocol as it pertains to the biological father's participation are not eligible for enrollment ----Note Regarding Legal Guardians who are not the Biological Parents: 1. At screening for enrollment of either the mother or the child, if the biological mother intends to give the infant up for adoption, neither the mother nor the child are eligible for enrollment 2. If the biological mother gives up legal guardianship of the child during the child's follow-up period, the child may remain enrolled as long as the new legal guardian:
• Agrees to meet the child's study requirements, and
• Provides written informed consent for the child's continued participation. 3. Throughout the protocol where it refers to the mother, father, or parent answering questionnaires about the child or collecting samples from the child and the child's primary home, the legal guardian who provides consent for the child's participation may complete those procedures
Healthy Volunteers, Other, Food & Nutrition, Infections, Immune System & Allergies, Allergic Diseases, Food Allergy, Atopic Dermatitis
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BK With VST for Kidney Transplant Patients

This study measures the safety, feasibility, and efficacy of viral-specific T cells (VST) against BK Virus (BKV) in adult kidney transplant recipients. Participants are expected to be on study for 52 weeks.
Sandesh Parajuli
All
18 Years to 75 Years old
Phase 1
This study is also accepting healthy volunteers
NCT05042076
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Inclusion Criteria:

• Age18 ≤ 75 years
• Have BKV infection/viremia following kidney transplantation, where BKV viremia is defined as positive BKV qPCR (≥ 250 copies)
• Have evidence of invasive BKV infection (BK Nephropathy)
• Experience one of the following:
• New, persistent and/or worsening BKV-related symptoms, signs and/or markers of end organ compromise despite being on lower immunosuppressive medication
• Adverse effects of lower immunosuppressive medications (e.g., dnDSA, biopsy proven rejection)
• Eligible Donor
• Provide Written informed consent
Exclusion Criteria:

• Non-kidney organ transplant recipient
• Patient with acute rejection of the kidney allograft at time of T-cell transfer
• Patient receiving steroids (>0.5 mg/kg body weight (BW) prednisone equivalent) at the time of T-cell transfer
• Patient treated with Thymoglobulin (ATG), Alemtuzumab or T-cell immunosuppressive monoclonal antibodies within 28 days prior to T-cell transfer
• Extra renal tissue invasive BK infection
• Concomitant enrollment in another clinical trial interfering with endpoints of this study
• Any medical condition which could compromise participation in the study according to the investigator's assessment
• Known HIV infection
• Female patient who is pregnant or breast-feeding, or adult of reproductive potential not willing to use an effective method of birth control during study treatment Note: Women of childbearing potential must have a negative urine pregnancy test at study entry.
• Patients unwilling or unable to comply with the protocol or unable to give informed consent Donor Eligibility
• ≥ 18 years old
• Available and capable of undergoing a single standard 2 blood volume leukapheresis
• HLA Compatible (see Donor selection priority below):
• Original kidney transplant donor
• Fully HLA matched family member (6/6 HLA match considering HLA-A, HLA-B and HLA-DRB1 genes)
• Partially matched family member (≥ 2/6 HLA match, considering HLA-A, HLA-B and HLA-DRB1 genes)
• BK IgG seropositive
• Meets the criteria for donor eligibility defined in the UW Program for Advanced Cell Therapy Standard Operating Policies and Procedures for Donor Evaluation and Eligibility Determination for the Donation of Viral Specific T Cells, which is in compliance with FACT standards for Immune Effector Cells, and 21 CFR 1271, subpart C.
• Provide written informed consent Donor selection priority: The original kidney donor will be the first choice of donor peripheral mononuclear cells. If the original donor is not available or does not meet all donor eligibility criteria, alternative related donors will be selected, with preference for fully matched related donors (6/6 HLA match, considering HLA-A, -B, and -DRB1 genes) over related donors with partial HLA match (≥ 2/6 HLA match, considering HLA-A, -B, and -DRB1 genes). Note that if the selected donor is related, but not a biological parent or child of the recipient (i.e., at least haploidentical), then high resolution testing of HLA-A and HLA-B will be performed on donor and recipient (if high resolution HLA genotyping not already available in the medical record). If the degree of matching at high resolution reveals a less favorable match than an alternative donor, then prioritization of the alternative donor will occur.
Kidney Transplant Infection, BK Virus Infection, Kidney replaced by transplant, Other, Infections, Immune System & Allergies, Kidney Disease & Urinary
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Phase I Trial to Evaluate VLP Peanut in Healthy and Peanut Allergic Subjects (PROTECT)

This phase I clinical trial is designed to evaluate the safety and tolerability of VLP Peanut in healthy subjects and in subjects with peanut allergy (PA). This clinical trial will evaluate the immunotoxicity profile of VLP Peanut in healthy subjects and assess the immunotoxicity profile and the degree of reactogenicity (allergenicity) in subjects with PA. This clinical trial will also explore preliminary proof of efficacy of VLP Peanut in subjects with PA.
Mark Moss
All
18 Years to 50 Years old
Phase 1
This study is also accepting healthy volunteers
NCT05476497
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Part A Main
Inclusion Criteria:
1. Capable of giving signed informed consent. 2. Subject who has a signed and dated Informed Consent Form (ICF). 3. Subject must be 18 to 50 years inclusive, at the time of signing the ICF. 4. Male or female. 5. Female subjects who are not of childbearing potential (or females of childbearing potential who agree to comply with the contraceptive requirements of the clinical trial protocol). 6. Good general health, as determined by the Investigator. 7. A positive SPT to histamine. The following additional inclusion criteria are only applicable to the healthy subjects in Group A1: 8. Healthy subjects (non-atopic) with no clinically significant co-morbidity (including broncho-reactive airway disease like asthma, current allergic rhinitis, etc.). 9. Subjects with no history of allergy or intolerance to peanut or any other food and who consume peanuts with no effect. 10. Subjects with lack of sensitivity to peanut allergen confirmed by SPT using whole peanut extract. 11. Peanut specific immunoglobulin E (IgE) <0.1 kU/L. 12. Ara h 2 specific IgE <0.1 kU/L. 13. Subjects with negative basophil activation test (BAT). The following additional inclusion criteria are only applicable to the subjects with PA in Group A2: 14. Clinical history of physician diagnosed PA. 15. Peanut allergen sensitivity confirmed by SPT and IgE. 16. Subjects who currently adhere to a strict peanut-free diet and who agree to continue this for the duration of the clinical trial. 17. Subjects who are able to handle and correctly use an adrenaline auto-injector. Part B Main
Inclusion Criteria:
1. Capable of giving signed informed consent. 2. Subject who has a signed and dated ICF. 3. Subjects aged 18 to 50 years of age inclusive, at the time of signing the ICF. 4. Male or female. 5. Female subjects who are not of childbearing potential (or females of childbearing potential who agree to comply with the contraceptive requirements of the clinical trial protocol). 6. Clinical history of physician diagnosed PA. 7. Peanut allergen sensitivity confirmed by SPT and IgE (Peanut specific IgE ≥5.0 kU/L and Ara h 2 specific IgE ≥2.0 kU/L) 8. Subjects with positive BAT. 9. Subjects who currently adhere to a strict peanut-free diet and who agree to continue this for the duration of the clinical trial. 10. Good general health, as determined by the Investigator. 11. Subjects who are able to handle and correctly use an adrenaline auto-injector. Main Exclusion Criteria Part A and B: 1. Pregnant or lactating subject. 2. Presence of any medical condition that may reduce the ability to survive a serious allergic reaction. 3. Subjects with atopic dermatitis with >25% skin surface involvement. 4. For subjects with PA, presence of severe, poorly controlled or uncontrolled asthma. 5. History of severe or life-threatening anaphylactic reactions to peanut resulting in neurological compromise or requiring mechanical ventilation. 6. Clinical history of severe systemic or life-threatening anaphylactic reactions to other foods (apart from peanut), insect venom, exercise, drugs, etc. or idiopathic anaphylaxis. 7. Unable to receive epinephrine therapy or at greater risk of developing adverse reactions after epinephrine administration as assessed by the site Investigator. 8. Clinical history of drug or alcohol abuse, which, in the Investigator's opinion, could interfere with the subject's ability to participate in the clinical trial. 9. Participation in a clinical research trial with any investigational drug/placebo within 3 months of screening (Visit 1) or concomitantly with this clinical trial. 10. Personal, financial or other dependent relationship (e.g., employee or immediate relative) with the clinical trial site, Sponsor, Sponsor's representative, or another individual who has access to the clinical trial protocol. 11. Vulnerable subjects or those in judicial or governmental detention, detainment or imprisonment in a public institution.
Peanut Allergy, Allergic rhinitis due to food, Other, Infections, Immune System & Allergies
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Vamikibart in Participants With Uveitic Macular Edema (Sandcat)

This study will assess the efficacy and safety of vamikibart in participants with uveitic macular edema.
Laura Kopplin
All
18 Years and over
Phase 3
This study is NOT accepting healthy volunteers
NCT05642325
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Inclusion Criteria:

• Female participants: Agreement to remain abstinent (refrain from heterosexual intercourse) or use contraception as defined by the protocol
• Diagnosis of macular edema associated with non-infectious uveitis (NIU)
• Diagnosis of active or inactive, acute, or chronic NIU of any etiology and of any anatomical type (anterior, intermediate, posterior, panuveitis)
• BCVA letter score of 73 to 19 letters (inclusive) on Early Treatment Diabetic Retinopathy Study (EDTRS)-like charts
Exclusion Criteria:

• Evidence of active or latent syphilis infection
• Evidence of active or latent tuberculosis infection and/or positive tuberculosis assay, or previous or current HIV diagnosis
• Serious acute or chronic medical or psychiatric illness
• History of major ocular and non-ocular surgical procedures
• Uncontrolled IOP or glaucoma or chronic hypotony
• Any anatomical changes or media opacity in the study eye preventing evaluation of retina, vitreous, and capture of study images
• Prior use of IVT biologics including anti-VEGFs less than 2-4 months prior to Day 1; received IVT Methotrexate within 4 months prior to Day 1
• Prior macular laser therapy, cataract surgery within 6 months and laser capsulotomy within 3 months of Day 1
• Topical corticosteroids and/or topical NSAID > 3 drops per day in the 14 days prior to Day 1 (D1); intraocular or periocular corticosteroid injections in the 2 months prior to D1; subconjunctival corticosteroid injection within 1 month prior to Day 1; an OZURDEX implant in the 4 months prior to D1; YUTIQ, RETISERT or ILUVIEN implant in the 3 years prior to D1
• Diagnosis of macular edema due to any cause other than NIU
• Any major ocular conditions that may require medical or surgical intervention during the study period to prevent vision loss
Uveitic Macular Edema, Other, Eye & Vision, Infections, Immune System & Allergies
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A Multi-center, Single-arm Trial Exploring the Safety and Clinical Effectiveness of RBX2660 Administered by Colonoscopy to Adults With Recurrent Clostridioides Difficile Infection (CDI-SCOPE)

This trial will be initiated to explore whether RBX2660 (REBYOTA®) could be suitable for administration by the practice of colonoscopy. More specifically, the purpose of this trial is to explore the safety and clinical effectiveness of RBX2660 when delivered by colonoscopy to adults with rCDI. The experience of physicians will be documented through a physician-experience questionnaire to explore the usability of RBX2660 in clinical practice for colonoscopic administration. Furthermore, to explore the patient-experience of RBX2660 treatment, each trial participant will be offered to undergo a structured interview.
Nasia Safdar, MD
All
18 Years and over
Phase 3
This study is NOT accepting healthy volunteers
NCT05831189
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Inclusion Criteria:

• have documented evidence of rCDI (≥1 recurrence after a primary CDI episode)
• be undergoing antibiotic treatment for the qualifying rCDI episode that was diagnosed by a stool test for the presence of toxigenic C. difficile or C. difficile toxin
• be eligible for FMT as judged by the investigator or current treatment guidelines for rCDI in the US
• be a candidate for colonoscopy as judged by the investigator
Exclusion Criteria:

• Use or planned use of systemic antibiotics for an indication other than the qualifying rCDI episode.
• Current uncontrolled chronic diarrhea not related to CDI.
• Receipt of CDI vaccine or treatment with CDI monoclonal antibodies within the past 12 months before screening.
• Evidence of active, severe, or fulminant colitis, diagnosis of toxic megacolon or have a current colostomy or ileostomy
Clostridium Difficile Infection Recurrence, Enterocolitis due to Clostridium difficile, Other, Infections, Immune System & Allergies, Digestive Health & Liver Disease
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Microbes and Respiratory Illnesses (MARI)

This study is called the Microbes and Respiratory Illnesses (MARI) Study. Children growing up on farms are exposed to many types of microbes that could be beneficial. It is thought that increased exposure to certain types of microbes early in life helps to develop a healthy immune system and reduce the risk for severe common cold illnesses, breathing problems, and allergies.
James Gern
All
4 Years to 12 Years old
N/A
This study is also accepting healthy volunteers
NCT06059027
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Inclusion Criteria:
1. Participant and/or parent guardian must be able to understand and provide informed consent 2. Children ages 4-12 years of age 3. Cohort 1: Family is self-identified as Plain community member 4. Cohort 2: Madison-area children with parental report of doctor-diagnosed asthma 5. Cohort 3: Madison-area children with no history of asthma by parental report 6. Cohort 4: Madison-area children who have an active respiratory illness
Exclusion Criteria:
1. Inability or unwillingness of a participant to give written informed consent or comply with study protocol 2. Chronic sinusitis (frequent sinus infections) 3. Plans to move out of the area before completing the study 4. Past or current medical problems or findings from physical examination or laboratory testing that are not listed above, which, in the opinion of the investigator, may pose additional risks from participation in the study, may interfere with the participant's ability to comply with study requirements or that may impact the quality or interpretation of the data obtained from the study 5. Enrolled family member
Virus, Asthma, Healthy Volunteers, Lung Disease [C08], Other, Lung & Respiratory, Infections, Immune System & Allergies
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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 daily treatment of equal to or greater than 640mcg Budesinide.
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 any of the following in the last 6 months: stroke/TIA, myocardial Infarction, stent placement, or acute coronary syndrome are definitively exclusionary. Decisions regarding other major health problems, such as autoimmune disease, history of carotid stenosis, heart disease, uncontrolled hypertension, lung diseases other than asthma, history of significant arrhythmias, etc. will be based upon the judgement of the PI/Co-I.
• 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
Other, Infections, Immune System & Allergies, Healthy Volunteers, Asthma
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