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Predictors of Sepsis in Ex-Preterm Infants

18. maj 2022 opdateret af: Amy O'Connell, Boston Children's Hospital

The aims of this study are to:

  • Assess whether ex-preterm infants have a persistently immature immune system, which may decrease their ability to respond to infections, when they reach term-corrected gestational age.
  • Examine whether clinical history, nutrition status, and microbiome composition are linked to the immune composition of term and ex-preterm infants and whether these variables can be used to predict the risk of developing sepsis or having an immunologic disease.

Studieoversigt

Status

Afsluttet

Betingelser

Detaljeret beskrivelse

Preterm infants have increased numbers of viral infections in childhood. They are also more likely to die from infection during the neonatal and infant periods than infants born at term. While studies have demonstrated that premature infants have decreased adaptive and innate immune responses compared with infants born at term, there has been little investigation into whether this impaired immunity improves and becomes similar to full term infants once the ex-preterm infants reach term-corrected gestational age. There have likewise not been studies to determine whether specific immune markers may predict the risk of developing sepsis. Given the immaturity of the preterm immune system and the many potential infectious and inflammatory insults they are exposed to during the preterm period (infections, poor nutrition, stress, steroid therapy), there is also a possibility that the relative immune deficiency experienced by preterm infants may persist into infancy.

The goal of this study is to determine whether former preterm infants have sustained differences in immunity compared to age-matched controls, which would have significant implications for infection risk and response to vaccination. Additionally, this study hopes to examine whether certain immune system abnormalities make certain babies more likely to have a serious infection. The present study will assess composition and function of T and B cell compartments in preterm and former preterm infants.

Undersøgelsestype

Observationel

Tilmelding (Faktiske)

40

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • Massachusetts
      • Boston, Massachusetts, Forenede Stater, 02115
        • Boston Children's Hospital

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

1 sekund til 2 år (Barn)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Both term and preterm infants will be included in the study.

Beskrivelse

Inclusion Criteria Ex-Preterm Infant Group:

  • Infants born less than 37 weeks gestational age

Exclusion Criteria for Ex-Preterm Infant Group:

  • Infants born greater than 37 weeks gestational age

Inclusion Criteria for Term Infant Group:

  • Infants born greater than 37 weeks gestational age

Exclusion Criteria for Term Infant Group:

  • Infants born less than 37 weeks gestational age

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Preterm Infants
Blood samples will be obtained from preterm and former preterm infants at birth and then monthly until hospital discharge. The sample would consist of either up to 0.5ml of blood obtained during a requested clinical blood draw, discarded blood, or a dried blood spot specimen. If no discard samples are available and study blood samples need to be obtained instead, this will occur for a maximum period of 6 months and no more than 3ml of blood will be collected over the entire study period.
Term Infants
Blood samples will be obtained from term control infants admitted to the NICU monthly until hospital discharge. The sample would consist of either up to 0.5ml of blood obtained during a requested clinical blood draw, discarded blood, or a dried blood spot specimen. If no discard samples are available and study blood samples need to be obtained instead, this will occur for a maximum period of 6 months and no more than 3ml of blood will be collected over the entire study period.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
The presence or absence of skewed or altered immune profile in preterm infants compared to infants born at term.
Tidsramme: Up to 1 year
The present study will assess composition and function of T and B cell compartments in preterm and former preterm infants. Whole blood samples will be separated into serum and cellular components and sera will be used to assess cytokine predominance and measure nutritional markers.
Up to 1 year

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Determining whether non-modifiable variables of nutrition status, microbiome composition, or immune repertoire composition predict risk of developing infection during the hospitalization.
Tidsramme: Up to 1 year
The investigators will measure nutritional status. Whole blood samples will be separated into serum and cellular components and sera will be used to assess cytokine predominance and measure nutritional markers.
Up to 1 year

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Amy O'Connell, MD, Boston Children's Hospital

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

18. april 2019

Primær færdiggørelse (Faktiske)

1. januar 2022

Studieafslutning (Faktiske)

1. maj 2022

Datoer for studieregistrering

Først indsendt

3. februar 2018

Først indsendt, der opfyldte QC-kriterier

8. februar 2018

Først opslået (Faktiske)

15. februar 2018

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

20. maj 2022

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

18. maj 2022

Sidst verificeret

1. maj 2022

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Andre undersøgelses-id-numre

  • IRB-P00023454

Plan for individuelle deltagerdata (IPD)

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Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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