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

25. september 2026 oppdatert 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.

Studieoversikt

Status

Har ikke rekruttert ennå

Forhold

Detaljert beskrivelse

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

Studietype

Observasjonsmessig

Registrering (Antatt)

20

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

2 måneder til 7 måneder (Barn)

Tar imot friske frivillige

Ja

Kjønn som er kvalifisert for studier

Alle

Prøvetakingsmetode

Ikke-sannsynlighetsprøve

Studiepopulasjon

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

Beskrivelse

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

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Observasjonsmodeller: COHORT
  • Tidsperspektiver: PROSPECTIVE

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Feasibility of complete questionnaire data collection
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
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.
Tidsramme: 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

Andre resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Preliminary data on the association between complementary feeding and gut microbiome composition
Tidsramme: 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

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Antatt)

1. september 2026

Primær fullføring (Antatt)

1. januar 2027

Studiet fullført (Antatt)

1. februar 2027

Datoer for studieregistrering

Først innsendt

9. september 2026

Først innsendt som oppfylte QC-kriteriene

25. september 2026

Først lagt ut (Faktiske)

1. oktober 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

1. oktober 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

25. september 2026

Sist bekreftet

1. september 2026

Mer informasjon

Begreper knyttet til denne studien

Andre studie-ID-numre

  • 2026-01319
  • 2026__SG_293 (Annet stipend/finansieringsnummer: Graduate Campus Universität Zürich)

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .