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Complication of PrematurityNCT02554630

Novel Mechanisms and Approaches to Treat Neonatal Sepsis

An observational study of Complication of Prematurity and Immunologic Deficiency Syndromes, run by University of Florida at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Mortality related to neonatal sepsis exceeds 1 million deaths worldwide; the highest risk of mortality is in preterm neonates, especially low birth weight (LBW), and very low birth weight (VLBW) neonates. The estimated cost of caring for these patients is approximately $700 million in the US alone. Read more about this study

Who is it for?
Ages Up to 55 yearsHealthy volunteers can take part
What is being tested?
Adjuvant and Blood Collection
How many people
142 participants
Where
1 siteUnited States
Study dates
Feb 2016to 21 Oct 2022
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Up to 55 years
  • All sexes
  • Healthy volunteers accepted
  • Child, Adult

Study population: Preterm neonates 0-72 hours old Term Neonates 0-72 hours old Healthy Adult Controls 18-55 years old

Who may be able to join

  • Consent to participate in the study
  • Consent to participate in the study
  • Age >18 years old, <55 years old

Who cannot join

  • non- survivable condition
  • Healthy Adult Controls
  • Age <18 years old, >55 years old
  • Severe pre-existing organ dysfunction
  • Oncolytic therapy within 14 days
  • HIV positive status
  • Current use of chronic steroids

Trial locations and contacts

1 site in 1 country.

United States1 site
  • UF Health

    Gainesville, Florida, 32610

Other trials in United States

About this study

Official title: Novel Mechanisms and Approaches to Treat Neonatal Sepsis: Adjuvant Therapies, Host Microbiome, and Genomic Expression and Functional Capacity of Innate Immune Cells

Mortality related to neonatal sepsis exceeds 1 million deaths worldwide; the highest risk of mortality is in preterm neonates, especially low birth weight (LBW), and very low birth weight (VLBW) neonates. The estimated cost of caring for these patients is approximately $700 million in the US alone.

In an effort to help mature the neonatal immune system, several adjuvant therapies have been studied; however, none have been implemented in clinical practice. One of the most frequently considered targets for adjuvant therapy is toll-like receptors (TLRs). TLRs detect conserved molecular products of microorganisms (lipopolysaccharide (LPS), and initiate immunity and inflammation. Early adjuvant administration in VLBW infants may be a viable approach to reducing the incidence of early and late sepsis.

This research study will characterize immune genomic expression and functional capacity at the time of birth in both term and preterm neonates and determine what effects, if any, that adjuvants have on this function. Additionally, this study will seek to determine if immune function correlates with certain microbiota.

Read the detailed description

Blood samples will be collected from three populations: preterm infants, term infants and healthy adult controls. In addition, a collection of meconium (<1mL) from the diaper of these term and preterm neonates;

  1. Term neonates (gestational age 37-42 weeks) between birth and 72 hours of life who have blood collected for the following clinical indications:
  2. Blood will be collected at 0-72 hours of life from neonates that are undergoing state metabolic screens or for clinical evaluation jaundice. The sample will be obtained during the standard of care state metabolic screen or for clinical evaluation of jaundice. The neonate will only have an extra drop of blood placed (500-700 micro-liters) in a tube during the heel sticks. Neonates will only have 1 sample drawn throughout the duration of the study.
  3. Preterm neonates (gestational age 24-37 weeks) consisting of two populations between birth and 72 hours of life who have blood collected for the following clinical indications:
  4. Blood will be collected at 0-72 hours of life from neonates that are otherwise healthy and do not require additional laboratory testing who are undergoing state metabolic screens or for evaluation of jaundice. The neonate will only have an extra drop of blood placed (500-700 microliters) in a tube during the heel stick. Neonates will only have 1 sample drawn throughout the duration of the study.
  5. A second group of premature neonates will have blood drawn for complications related to prematurity (sepsis work-up). The neonate will only have an extra drop of blood placed (500-700 micro-liters) in a tube during one of these clinical blood draws.
  6. Healthy adult controls will have (4milleters) blood collected by way of vein puncture.

For all infants, term and preterm, the following data will be collected at the time of blood collection: gender, gestational age, weight, mechanism of birth (vaginal vs cesarean section), evidence of infectious complication (chorioamnionitis, prolonged rupture of membranes, maternal group B strep colonization, hypoglycemia), use of perinatal antibiotics or steroids, laboratory values available in the electronic medial record (CBC, CMP, Lactic acid, CRP) and Apgar scores will be collected from each patient. Additionally the clinical outcomes of these patients, term and preterm,will be collected until time of discharge but not to exceed 90 days.

Being tested
Adjuvant, Blood Collection
Medical subject headings
Immunologic Deficiency Syndromes

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • AdjuvantOther

    Also called Lippopolysaccaride, Specific toll-like receptor 4 agonist, Non-specific toll-like receptor 4 agonist

    Blood will be incubated, ex-vivo, with one of the adjuvant therapies or no adjuvant and then, using microfluidic techniques the immune genomic profile and the functional capacity of immune cells will be assessed.

  • Blood CollectionOther

    Blood collection will be performed on all groups.

Study groups in NCT02554630
Study groupRoleWhat they receive
Preterm NeonateNeonates of gestational age 24-37 weeks. Blood collection will be performed at the time of a clinically required heelstick or blood draw. Microfluidic techniques, utilizing whole blood, will be employed to characterize the baseline genomic profile and functional capacity of immune cells. Adjuvant drugs will be employed ex-vivo to determine if adjuvant therapies change genomic expression and bolster immune function. Meconium will be collected for microbiome analysis. Clinical outcomes will be recorded from the electronic medical record.
Receives: Other: Adjuvant; Other: Blood Collection
Term NeonatesNeonates of gestational age 37-42 weeks. Blood collection will be performed at the time of a clinically required heelstick or blood draw. Microfluidic techniques, utilizing whole blood, will be employed to characterize the baseline genomic profile and functional capacity of immune cells. Adjuvant drugs will be employed ex-vivo to determine if adjuvant therapies change genomic expression and bolster immune function. Meconium will be collected for microbiome analysis. Clinical outcomes will be recorded from the electronic medical record.
Receives: Other: Adjuvant; Other: Blood Collection
Healthy Adult ControlHealthy Adult aged 18-55 years will undergo a single blood collection by the way of vein puncture. Microfluidic techniques, utilizing whole blood, will be employed to evaluate the genomic profile and functional capacity of immune cells. Adjuvant drugs will be employed ex-vivo to determine if adjuvant therapies change genomic expression and bolster immune function.
Receives: Other: Adjuvant; Other: Blood Collection

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Genomic analysis

    The genomic profile will be interpreted using Ingenuity Pathway Analysis (IPA) software to make functional predictions. Additionally, a cytokine analysis, and an evaluation for the prevalence of myeloid derived suppressor cells (MDSCs) that have been shown to correlate with poorer outcomes in adult sepsis studies will be performed.

    Measured: Day 1

  2. Functional immunologic analysis

    Functional capacity will be confirmed directly by observing chemotaxis and quantifying generation of reactive oxygen species (ROS), rate of phagocytosis, and bacterial killing ability. Additionally, a cytokine analysis, and an evaluation for the prevalence of myeloid derived suppressor cells (MDSCs) that have been shown to correlate with poorer outcomes in adult sepsis studies will be performed.

    Measured: Day 1

Secondary outcomes (4)
  1. Immune Function Correlation with Clinical Outcomes

    The clinical course of these neonates will be followed for incidence of infectious complications including sepsis as evident by culture results. Therefore, allowing the investigators to determine if immunologic deficits present at birth correlate with clinical outcomes.

    Measured: 90 days

  2. Ex-vivo Adjuvant Therapies On Immune Function

    The implementation of adjuvants in both murine and human models has shown improved function of immune effector cells as well as in clinical outcomes. Adjuvant treatment of mice with TLR agonists stimulates polymorphonuclear leukocytes (PMN) recruitment and function, decreases rates of bacteremia, and increases survival to polymicrobial and gram negative sepsis. Vaccination with Bacillus Calmette-Guerin (BCG) at birth reduces mortality by 40% in LBW infants to sepsis (not tuberculosis) in sub-Saharan Africa. Utilizing an ex-vivo design we will evaluate the changes in immune cell functional capacity.

    Measured: Day 1

  3. Ex-vivo Adjuvant Therapies Effect On Immune Cell Genomic Expression

    The implementation of adjuvants in both murine and human models has shown improved function of immune effector cells as well as in clinical outcomes. Adjuvant treatment of mice with TLR agonists stimulates polymorphonuclear leukocytes (PMN) recruitment and function, decreases rates of bacteremia, and increases survival to polymicrobial and gram negative sepsis. Vaccination with Bacillus Calmette-Guerin (BCG) at birth reduces mortality by 40% in LBW infants to sepsis (not tuberculosis) in sub-Saharan Africa. Utilizing an ex-vivo design we will evaluate the changes in immune cell genomic expression.

    Measured: Day 1

  4. Microbiome Influences Immune Cell Function

    Correlated immune deficiencies with differences in the microbiome at the time of birth will be documented by using microbiomic differences present at the time of birth in term vs preterm neonates using Illumina 16s rRNA technology. This system uses highly conserved sequences among bacteria to identify and classify bacterium. The software then provides taxonomic classification to find a microbiomic signature that is specific to immune dysfunction.

    Measured: Day 1

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted18 Sep 2015 (estimated)
  2. Study startFeb 2016
  3. Primary completion21 Oct 2022
  4. Study completion21 Oct 2022

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Case-control
Time perspective
Prospective
Enrolment
142 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02554630
Sponsor's protocol ID
IRB201500447 -N
Other IDs
R01GM097531
Status last verified
Feb 2023
First submitted
17 Sep 2015
Last updated
10 Feb 2023
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Publications

  • Watson RS, Carcillo JA, Linde-Zwirble WT, Clermont G, Lidicker J, Angus DC. The epidemiology of severe sepsis in children in the United States. Am J Respir Crit Care Med. 2003 Mar 1;167(5):695-701. doi: 10.1164/rccm.200207-682OC. Epub 2002 Nov 14.

    PubMed 12433670
  • Lawn JE, Kerber K, Enweronu-Laryea C, Cousens S. 3.6 million neonatal deaths--what is progressing and what is not? Semin Perinatol. 2010 Dec;34(6):371-86. doi: 10.1053/j.semperi.2010.09.011.

    PubMed 21094412
  • Cuenca AG, Wynn JL, Moldawer LL, Levy O. Role of innate immunity in neonatal infection. Am J Perinatol. 2013 Feb;30(2):105-12. doi: 10.1055/s-0032-1333412. Epub 2013 Jan 7.

    PubMed 23297181
  • PrabhuDas M, Adkins B, Gans H, King C, Levy O, Ramilo O, Siegrist CA. Challenges in infant immunity: implications for responses to infection and vaccines. Nat Immunol. 2011 Mar;12(3):189-94. doi: 10.1038/ni0311-189. No abstract available.

    PubMed 21321588
  • Wynn JL, Scumpia PO, Winfield RD, Delano MJ, Kelly-Scumpia K, Barker T, Ungaro R, Levy O, Moldawer LL. Defective innate immunity predisposes murine neonates to poor sepsis outcome but is reversed by TLR agonists. Blood. 2008 Sep 1;112(5):1750-8. doi: 10.1182/blood-2008-01-130500. Epub 2008 Jun 30.

    PubMed 18591384
  • Wynn JL, Levy O. Role of innate host defenses in susceptibility to early-onset neonatal sepsis. Clin Perinatol. 2010 Jun;37(2):307-37. doi: 10.1016/j.clp.2010.04.001.

    PubMed 20569810
  • Yost CC, Cody MJ, Harris ES, Thornton NL, McInturff AM, Martinez ML, Chandler NB, Rodesch CK, Albertine KH, Petti CA, Weyrich AS, Zimmerman GA. Impaired neutrophil extracellular trap (NET) formation: a novel innate immune deficiency of human neonates. Blood. 2009 Jun 18;113(25):6419-27. doi: 10.1182/blood-2008-07-171629. Epub 2009 Feb 12.

    PubMed 19221037
  • Gessler P, Nebe T, Birle A, Haas N, Kachel W. Neutrophil respiratory burst in term and preterm neonates without signs of infection and in those with increased levels of C-reactive protein. Pediatr Res. 1996 May;39(5):843-8. doi: 10.1203/00006450-199605000-00017.

    PubMed 8726239
  • Gentile LF, Nacionales DC, Lopez MC, Vanzant E, Cuenca A, Cuenca AG, Ungaro R, Szpila BE, Larson S, Joseph A, Moore FA, Leeuwenburgh C, Baker HV, Moldawer LL, Efron PA. Protective immunity and defects in the neonatal and elderly immune response to sepsis. J Immunol. 2014 Apr 1;192(7):3156-65. doi: 10.4049/jimmunol.1301726. Epub 2014 Mar 3.

    PubMed 24591376
  • Cuenca AG, Cuenca AL, Gentile LF, Efron PA, Islam S, Moldawer LL, Kays DW, Larson SD. Delayed emergency myelopoiesis following polymicrobial sepsis in neonates. Innate Immun. 2015 May;21(4):386-91. doi: 10.1177/1753425914542445. Epub 2014 Aug 7.

    PubMed 25106654
  • Sweeney SE, Firestein GS. Primer: signal transduction in rheumatic disease--a clinician's guide. Nat Clin Pract Rheumatol. 2007 Nov;3(11):651-60. doi: 10.1038/ncprheum0631.

    PubMed 17968336
  • Kollmann TR, Crabtree J, Rein-Weston A, Blimkie D, Thommai F, Wang XY, Lavoie PM, Furlong J, Fortuno ES 3rd, Hajjar AM, Hawkins NR, Self SG, Wilson CB. Neonatal innate TLR-mediated responses are distinct from those of adults. J Immunol. 2009 Dec 1;183(11):7150-60. doi: 10.4049/jimmunol.0901481. Epub 2009 Nov 16.

    PubMed 19917677

Questions about this trial

What is this clinical trial studying?

An observational study of Complication of Prematurity and Immunologic Deficiency Syndromes, run by University of Florida at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 10 Feb 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Genomic analysis (time frame: Day 1). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02554630, which also lists 12 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Feb 2023.

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