An observational study in Enterocolitis, Necrotizing, sponsored by Imperial College London. Enrolling by invitation at 1 site in United Kingdom. Open to participants aged Up to 32 Weeks. Per ClinicalTrials.gov, last updated 2025-05-07.
Sponsored by Imperial College London · Observational
Necrotising enterocolitis (NEC) is one of the leading causes of mortality and morbidity in very preterm infants. This study aims to determine whether NEC rates are different between infants who receive probiotics versus infants who do not receive probiotics. The study has a retrospective cohort design and will utilise routinely collected data from the UK National Neonatal Research Database (NNRD). The cohort will comprise all infants born before 32 weeks gestation and cared for in neonatal units in England and Wales between 2016 and 2022. A propensity score matched approach will be used to conduct two comparisons: i) the risk of necrotising enterocolitis (NEC) between who do and those who do not receive probiotics in the first 14 days of life ii) the risk of NEC between babies who receive the two most common probiotic products used in UK units, (Labinic and Proprems).
228 studies on the registry are indexed under Enterocolitis, Necrotizing; 44 are open to participants now.
This study's planned enrollment of 48,000 is above the median of 144 across 95 observational studies indexed under Enterocolitis, Necrotizing.
Browse Enterocolitis, Necrotizing studies →Imperial College London is the lead sponsor of 843 studies on the registry; 180 are open to participants now.
Of its 9 completed or terminated interventional studies of FDA-regulated products, 6 (67%) have results posted.
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Infants born very preterm i.e. before 32 weeks gestation
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Receipt of any probiotic in the first 14 days of life. Probiotics to include: Labinic, Proprems probiotic, Acidophillus, Bifidobacterium, Bio-kult, Infloran, LB2. To address potential recording error, infants whose NNRD records show minimal (one day) of probiotic exposure will only be classed as exposed if they are cared for in a probiotic unit. Probiotic units are defined as: * units who have confirmed that a guideline was in place to provide probiotics to infants born before 32 weeks gestation and that the guideline was in place at any point in the year that the infant was born OR * units where more than 50% of the infants eligible to be part of the cohort received probiotics in the six months after the infant was born.
Dietary Supplement: Probiotics
Did not receive any probiotic in the first 14 days of life.
Dietary Supplement: Probiotics
Any exposure to probiotics in first 14 days of life
Also known as: Labinic, Proprems, Acidophillus, Bifidobacterium, Bio-kult, Infloran, LB2
Severe necrotising enterocolitis (NEC)
NEC confirmed at surgery or postmortem or listed as a cause of death
Time frame: From date of birth until the date of discharge from final neonatal unit, assessed up to 24 months
Necrotising enterocolitis (NNAP definition)
NEC diagnosed at postmortem or NEC diagnosed during surgery or NEC diagnosed using clinical and radiographic features (where the infant has at least one clinical feature (bilious gastric aspirate or emesis, abdominal distension, occult, gross blood in stool) and at least one radiographic feature (pneumatosis, hepato-biliary gas, pneumoperitoneum)).
Time frame: From date of birth until the date of discharge from final neonatal unit, assessed up to 24 months
Pragmatically defined NEC
Infants who had a recorded diagnosis of necrotising enterocolitis and received at least 5 consecutive days of antibiotics whilst also nil by mouth
Time frame: From date of birth until the date of discharge from final neonatal unit, assessed up to 24 months
Late onset sepsis
HQIP NNAP case definition
Time frame: From date of birth until the date of discharge from final neonatal unit, assessed up to 24 months
Pragmatically defined late onset sepsis
Growth of any organisms that appear in the NNAP lists of "Clearly pathogenic organisms" and "Other organisms"
Time frame: From date of birth until the date of discharge from final neonatal unit, assessed up to 24 months
Survival to discharge home
Time frame: On date of discharge from final neonatal unit, assessed up to 24 months
Survival without severe NEC or late onset sepsis (LOS)
LOS is defined according to the Healthcare Quality Improvement Partnership (HQIP) National Neonatal Audit Programme (NNAP) case definition i.e. blood stream or cerebrospinal fluid confirmed pure growth in culture after first three days of life
Time frame: From date of birth until the date of discharge from final neonatal unit, assessed up to 24 months
Survival without any NEC
NEC is defined as per the NNAP definition
Time frame: From date of birth until the date of discharge from final neonatal unit, assessed up to 24 months
Brain injury
Either left or right grade 3 or higher intra-ventricular haemorrhage or cystic periventricular leukomalacia
Time frame: From date of birth until the date of discharge from final neonatal unit, assessed up to 24 months
Treated retinopathy of prematurity
Defined as cryotherapy, laser therapy or injection of anti-vascular endothelial growth factor therapy for ROP in either or both eyes
Time frame: From date of birth until the date of discharge from final neonatal unit, assessed up to 24 months
Stage of retinopathy of prematurity
Time frame: From date of birth until the date of discharge from final neonatal unit, assessed up to 24 months
Bronchopulmonary dysplasia
Defined as any respiratory or ventilatory support or supplemental oxygen at 36 weeks postmenstrual age
Time frame: 36 weeks postmenstrual age
Severe bronchopulmonary dysplasia
Defined as ventilation via endotracheal tube or trachestomy, and excluding non-invasive support or CPAP, at 36 weeks postmenstrual age
Time frame: 36 weeks postmenstrual age
Length of stay
Number of days between first neonatal unit admission and final neonatal unit discharge for surviving infants
Time frame: From date of birth until the date of discharge from final neonatal unit, assessed up to 24 months
Time to full feeds
Defined as the number of days until an infant is recorded as not requiring any parenteral nutrition or fluid (i.e. no parenteral nutrition or intravenous dextrose)
Time frame: Before discharge from final neonatal unit
Growth
Weight for post-menstrual age standard deviation score
Time frame: 36 weeks corrected gestational age
PDFs hosted by the registry, ClinicalTrials.gov.
Plan to share: Undecided — Study protocol available now. Analysis code will be available after publication of results.
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