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Study on the Association Between the Introduction of Complementary Feeding and Infant Gut Microbiome Composition

25 september 2026 uppdaterad av: University Children's Hospital, Zurich

FamilyFeedBiome Pilot Project: Observational Study on the Association Between the Introduction of Complementary Feeding and the Composition of the Gut Microbiome in Infants

The goal of this observational study is to assess the feasibility of investigating the association between the introduction of complementary feeding and gut microbiome composition in infants. The main question it aims to answer is:

Can we reach the feasibility targets for questionnaire completeness and data quality, the proportion of stool samples suitable for analysis, protocol adherence, and recruitment rate?

Parents will complete questionnaires about their infant's health and nutrition and collect stool samples from their infant at three timepoints around the introduction of complementary feeding.

Studieöversikt

Status

Har inte rekryterat ännu

Betingelser

Detaljerad beskrivning

Patient and Public Involvement and Engagement (PPIE) is embedded throughout the planning, conduct and dissemination of this observational study.

Studietyp

Observationell

Inskrivning (Beräknad)

20

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

2 månader till 7 månader (Barn)

Tar emot friska volontärer

Ja

Kön som är behöriga för studier

Allt

Testmetod

Icke-sannolikhetsprov

Studera befolkning

Infants recruited from a pediatric practice and a University Children's Hospital.

Beskrivning

Inclusion Criteria:

  • Healthy infants
  • Formula or breastfed
  • Born at term (≥ 37 weeks gestation)
  • Parents/caregivers willing and able to collect stool samples and complete questionnaires
  • Written informed consent signed by parent or caregiver
  • Parent/caregiver at least 18 years of age

Exclusion Criteria:

  • Preterm infants (< 37 weeks gestation)
  • Infants with congenital or chronic conditions affecting digestion or the immune system
  • Use of antibiotics within the last 4 weeks before start of complementary feeding
  • Food allergies or intolerances that would significantly restrict complementary feeding
  • Parents/caregivers have insufficient proficiency in German to understand study materials and provide informed consent

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Observationsmodeller: COHORT
  • Tidsperspektiv: PROSPECTIVE

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Feasibility of complete questionnaire data collection
Tidsram: At study completion, approximately 5 months

Percentage of questionnaires completed by recruited families (feasibility target: ≥ 80 %).

At study completion, approximately 5 months
Feasibility of high-quality questionnaire data collection
Tidsram: At study completion, approximately 5 months

Percentage of families for whom no contradictory or inconsistent information is identified across the three questionnaires (feasibility target: ≥ 80 %).

At study completion, approximately 5 months
Feasibility of adherence to questionnaire timepoints
Tidsram: At study completion, approximately 5 months

Percentage of answered questionnaires that comply with the predefined data collection timepoints between start of complementary feeding (CF) and T1, T2 and T3: T1 - CF: 0 - 8 days, CF - T2: 6 - 8 days, CF - T3: 13 - 15 days (feasibility target: ≥ 80 %).

At study completion, approximately 5 months
Feasibility of adherence to stool sample collection timepoints
Tidsram: At study completion, approximately 5 months

Percentage of collected stool samples that comply with the predefined data collection timepoints between start of complementary feeding (CF) and T1, T2 and T3: T1 - CF: 0 - 8 days, CF - T2: 6 - 8 days, CF - T3: 13 - 15 days (feasibility target: ≥ 80 %).

At study completion, approximately 5 months
Feasibility of collecting analyzable stool samples
Tidsram: At study completion, approximately 5 months

Percentage of collected stool samples for which 16S rRNA analysis was successfully completed (feasibility target: ≥ 90 %).

At study completion, approximately 5 months
Feasibility of study participant recruitment
Tidsram: At study completion, approximately 5 months

Recruitment rate will be described as number of recruited study participants per month. Reasons of withdrawal will be reported.

At study completion, approximately 5 months

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Feasibility of PPIE activities assessed by the project leader using the Public and Patient Engagement Evaluation Tool (PPEET) project questionnaire and by the PPIE participants using a modified Patient Engagement in Research Scale (PEIRS) tool.
Tidsram: At study completion, approximately 5 months

The level of involvement achieved will be assessed by the project leader and PPIE participants using single-choice questions in the questionnaires. PPIE activities will be considered feasible if all PPIE activities can be conducted at the predefined level of involvement. Challenges and barriers encountered during the implementation of PPIE activities and their impact on the feasibility of PPIE activities will be assessed descriptively by the project leader and PPIE participants in the questionnaires.

At study completion, approximately 5 months

Andra resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Preliminary data on the association between complementary feeding and gut microbiome composition
Tidsram: 7 days before introduction of complementary feeding, 7 days after introduction of complementary feeding, 14 days after introduction of complementary feeding

Participant's health and dietary characteristics, as well as gut microbiome composition will be summarized at each timepoint using descriptive statistics. Where appropriate, plots will be used to visualize changes over time and patterns in gut microbiome composition. Gut microbiome composition will be described based on the relative abundance of the most common bacteria, microbial diversity within individual samples (α-diversity), and differences in overall microbial community composition between timepoints (β-diversity). Any statistical analyses investigating associations between the introduction of complementary feeding and gut microbiome composition will be considered explanatory and reported using confidence internals. These analyses will not include p-values or support confirmatory conclusions.

7 days before introduction of complementary feeding, 7 days after introduction of complementary feeding, 14 days after introduction of complementary feeding

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Beräknad)

1 september 2026

Primärt slutförande (Beräknad)

1 januari 2027

Avslutad studie (Beräknad)

1 februari 2027

Studieregistreringsdatum

Först inskickad

9 september 2026

Först inskickad som uppfyllde QC-kriterierna

25 september 2026

Första postat (Faktisk)

1 oktober 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

1 oktober 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

25 september 2026

Senast verifierad

1 september 2026

Mer information

Termer relaterade till denna studie

Andra studie-ID-nummer

  • 2026-01319
  • 2026__SG_293 (Annat bidrag/finansieringsnummer: Graduate Campus Universität Zürich)

Läkemedels- och apparatinformation, studiedokument

Studerar en amerikansk FDA-reglerad läkemedelsprodukt

Nej

Studerar en amerikansk FDA-reglerad produktprodukt

Nej

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