NCT05003804CompletedPhase 1/2
Allergic Disease Onset Prevention Study
A Phase 1b/2, Randomized, Double-blind, Placebo-controlled, Multi-center Study of STMC-103H in Neonates and Infants at Risk for Developing Allergic Disease
Source: ClinicalTrials.gov · Last updated 20 Nov 2025
Brief summary (registry, in English)
This is a Phase 1b/2, randomized, double-blind, multi-center study to evaluate the safety, tolerability, and preliminary clinical efficacy of STMC-103H in neonates and infants at risk for developing allergic disease (Type 1 hypersensitivity). Subjects will be enrolled in a three-part sequential approach. Participants in the safety-run portion of the study (Part A1: 1 year to \<6 years of age and A2: 1 month to \<12 months of age) will receive 28 days of treatment with STMC-103H or placebo, followed by 28 days of follow-up. A Data and Safety Monitoring Committee (DSMC) will review safety data after all patients in each part complete 28 days of therapy prior to enrolling the next part. After A2, Part B will enroll 224 patients for 336 days of treatment with STMC-103H or placebo, followed by 336 days of follow-up. Stool, blood, and optional samples will be collected in Parts A2 and part B. Primary safety endpoints are frequency, type and severity of Adverse Events (AEs) and Serious Adverse Events (SAEs), as well as findings on physical exams, vitals, and safety laboratories. The primary efficacy endpoint is incidence of physician-diagnosed atopic dermatitis at day 336.
- Status (registry)
- Completed
- Phase (registry)
- Phase 1/2
- Study type
- Interventional
- Enrollment
- 283 (actual)
- First submitted
- 4 Aug 2021
- Start date
- 1 Sept 2021
- Primary completion date
- 26 Nov 2024
- Lead sponsor
- Siolta Therapeutics, Inc.
- Diseases
- Atopic dermatitis (eczema)
- NCT number
- NCT05003804
What you commit to
- Study type: Interventional · Phase 1/2
- Participants enrolled: 283
- From 1 Sept 2021 to the primary completion date, 26 Nov 2024
- 31 sites in 3 countries
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Other illness
- All Parts (A1, A2, B)
- Subject's twin (or higher order multiple) is enrolled in STMC-103H-102
- Subject has any congenital abnormalities or condition, significant disease, illness, physical exam finding, or disorder that, in the opinion of the PI, may put the subject at safety risk or is likely to hinder feeding or affect metabolism that may influence the results of the study. (Neonatal hyperbilirubinemia (jaundice), including jaundice that requires phototherapy, should not be considered exclusionary).
- Subject is acutely ill or on systemic antibiotics at the time of enrollment
- Subject is participating in another interventional clinical study involving investigational medication, formula, probiotic, or prebiotic use within 30 days (or five half-lives, whichever is longer) of this study
- Subject has evidence of immune deficiency/immune compromise in the judgment of the investigator
- Part B Only
- 6 (B). Subject was born at \< 35 weeks' gestation 7 (B). Biological maternal medical condition during the pregnancy that, in the opinion of the PI, may put the subject at risk because of participation in the study. (Maternal antibiotics during the time of delivery should not be considered exclusionary.)
Who the study is looking for
- All Parts (A1, A2, B)
- Subject's parent(s)/legal representative(s) providing consent must be 18 years or older
- Biological mother and/or biological father and/or full sibling(s), have a history of asthma, atopic dermatitis, food allergy, or allergic rhinitis as determined by the screening questionnaire
- Subject's parent(s)/legal representative(s) (if appropriate according to local laws) is/are willing and able to give informed consent for participation in the study
- Subject's parent(s)/legal representative(s) (if appropriate according to local laws) is/are willing and able, in the PI's opinion, to comply with all study requirements
- Part A1 Only
- 5 (A1). Subject is between 1 year and \< 6 years old at the time of enrollment
- Part A2 Only
- 5 (A2). Subject is between 28 days and \< 12 months of life at the time of enrollment 6 (A2). Subject's parent(s)/legal representative(s) do not plan to give probiotics (including infant formula that contain probiotics) to the subject during the trial
- Part B Only
- 5 (B). Subject is ≤ 14 days of life at the time of enrollment. Sites should make every effort to enroll newborns as soon as possible after birth.
- 6 (B). Subject has a birthweight ≥ 2.5 kg and ≤ 4.5 kg 7 (B). Subject's parent(s)/legal representative(s) do not plan to give probiotics (including infant formula that contain probiotics) to the subject from the time of birth to the end of the trial.
Age in the registry: 0 days to 14 days · Sex: All · Accepts healthy volunteers
Sites (31)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| The Women's and Children's Hospital Coordinator of this site? Confirm its status | Adelaide | Australia | Unknown status |
| Monash Children's Hospital Coordinator of this site? Confirm its status | Clayton | Australia | Unknown status |
| Fiona Stanley Hospital Coordinator of this site? Confirm its status | Murdoch | Australia | Unknown status |
| Murdoch Children's Research Institute Coordinator of this site? Confirm its status | Parkville | Australia | Unknown status |
| Queensland Children's Hospital Coordinator of this site? Confirm its status | South Brisbane | Australia | Unknown status |
| The Children's Hospital at Westmead Coordinator of this site? Confirm its status | Westmead | Australia | Unknown status |
| Centro de Neumologia Pediatrica Coordinator of this site? Confirm its status | Caguas | Puerto Rico | Unknown status |
| University of Michigan Health Coordinator of this site? Confirm its status | Ann Arbor | United States | Unknown status |
| Children's Healthcare of Atlanta Coordinator of this site? Confirm its status | Atlanta | United States | Unknown status |
| Children's Hospital Colorado Coordinator of this site? Confirm its status | Aurora | United States | Unknown status |
| Dell Medical School at UT Austin Coordinator of this site? Confirm its status | Austin | United States | Unknown status |
| Johns Hopkins University School of Medicine Coordinator of this site? Confirm its status | Baltimore, MD | United States | Unknown status |
| Boston Children's Hospital Coordinator of this site? Confirm its status | Boston | United States | Unknown status |
| Lurie Children's Hospital Coordinator of this site? Confirm its status | Chicago | United States | Unknown status |
| University of Chicago Medicine Coordinator of this site? Confirm its status | Chicago | United States | Unknown status |
| Cincinnati Children's Hospital Coordinator of this site? Confirm its status | Cincinnati | United States | Unknown status |
| UT Southwestern/Children's Health Coordinator of this site? Confirm its status | Dallas | United States | Unknown status |
| Northwell Healthcare Coordinator of this site? Confirm its status | Great Neck | United States | Unknown status |
| Tribe Clinical Research Coordinator of this site? Confirm its status | Greenville | United States | Unknown status |
| Riley Children's Health at University of Indiana Coordinator of this site? Confirm its status | Indianapolis | United States | Unknown status |
| Arkansas Children's Research Institute Coordinator of this site? Confirm its status | Little Rock | United States | Unknown status |
| UCLA Health Coordinator of this site? Confirm its status | Los Angeles | United States | Unknown status |
| Univ. of Wisconsin-Madison/Jackson Research Group Coordinator of this site? Confirm its status | Madison | United States | Unknown status |
| NYU Langone Fink Children's Coordinator of this site? Confirm its status | New York | United States | Unknown status |
| Mt. Sinai Jaffe Allergy Institute Coordinator of this site? Confirm its status | New York | United States | Unknown status |
| University of Rochester Medical Center Coordinator of this site? Confirm its status | Rochester | United States | Unknown status |
| Rady Children's Hospital - San Diego Coordinator of this site? Confirm its status | San Diego | United States | Unknown status |
| UCSF Benioff Children's Hospital Coordinator of this site? Confirm its status | San Francisco | United States | Unknown status |
| Seattle Allergy and Asthma Research Institute Coordinator of this site? Confirm its status | Seattle | United States | Unknown status |
| Coastal Pediatrics Research Coordinator of this site? Confirm its status | Summerville | United States | Unknown status |
| University of Arizona - Health Sciences Coordinator of this site? Confirm its status | Tucson | United States | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.