NCT02765126

Brief Summary

Vaccines can have non-targeted or heterologous (also called non-specific) immunological effects on the immune system i.e. effects other than inducing an immune response against the disease targeted by the vaccine. This trial aims to evaluate the non-specific immunological effects of two vaccines - diphtheria-tetanus-acellular pertussis (DTP) vaccine and seasonal influenza vaccine - in a cohort of elderly humans (\>65 years of age) and healthy adult control subjects (30-50 years).

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
450

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started May 2016

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 1, 2016

Completed
2 days until next milestone

First Submitted

Initial submission to the registry

May 3, 2016

Completed
3 days until next milestone

First Posted

Study publicly available on registry

May 6, 2016

Completed
3.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2019

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2019

Completed
Last Updated

July 27, 2017

Status Verified

July 1, 2017

Enrollment Period

3.6 years

First QC Date

May 3, 2016

Last Update Submit

July 25, 2017

Conditions

Outcome Measures

Primary Outcomes (1)

  • Number of inflammation reactive TNFR2+ regulatory T cells per mL of blood

    Change over time in different vaccine groups of Tregs measured by flow cytometry.

    24 hours, 1 week, 4 weeks and 26 weeks

Secondary Outcomes (4)

  • Whole human genome transcription profile by next generation sequencing in log2 expression levels

    24 hours

  • Influenza-specific antibody titres to seasonal influenza vaccination

    4 weeks and 26 weeks

  • Pro-inflammatory (TNF) to anti-inflammatory (IL-10) cytokine ratio in stimulated blood in pg/mL

    24 hours, 1 week, 4 weeks and 26 weeks

  • Influenza-specific IFN-g CD4 T cell responses to seasonal influenza vaccination in pg/mL

    4 weeks and 26 weeks

Study Arms (3)

Group 1

ACTIVE COMPARATOR

Diphtheria-tetanus-acellular pertussis vaccine administered day 0, followed by seasonal influenza vaccination four weeks later. Blood testing to occur day 0 (prior to vaccine administration), 24 hours, 1 week, 4 weeks, 4 weeks + 24 hours, 5 weeks, 8 weeks and 30 weeks. Stool samples to be taken at day 0 and 1 week post-vaccination.

Biological: Seasonal influenza vaccineBiological: Diphtheria-tetanus-acellular pertussis vaccine

Group 2

ACTIVE COMPARATOR

Seasonal influenza vaccine administered on day 0, to be offered DTP vaccine at week 26. Blood testing to occur day 0 (prior to vaccine administration), 24 hours, 1 week 1, 4 weeks and 26 weeks. Stool samples to be taken at day 0 and 1 week post-vaccination.

Biological: Seasonal influenza vaccineBiological: Diphtheria-tetanus-acellular pertussis vaccine

Group 3

ACTIVE COMPARATOR

Seasonal influenza vaccine and DTP vaccine administered together on day 0. Blood testing to occur day 0 (prior to vaccine administration), 24 hours, 1 week 1, 4 weeks and 26 weeks. Stool samples to be taken at day 0 and 1 week post-vaccination.

Biological: Seasonal influenza vaccineBiological: Diphtheria-tetanus-acellular pertussis vaccine

Interventions

Intramuscular standard seasonal influenza vaccine

Also known as: Quadrivalent Influenza Vaccine
Group 1Group 2Group 3

Intramuscular DTaP vaccine

Also known as: Boostrix vaccine
Group 1Group 2Group 3

Eligibility Criteria

Age30 Years - 100 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Two study groups 30-50 years old \>65 years old

You may not qualify if:

  • Unwell on day of vaccination
  • Temperature \>38°C
  • Active cancer
  • Active autoimmune disease
  • Diabetes mellitus
  • Taking immunosuppressive drugs including steroids
  • Any vaccination in last 3 months
  • DT or DTaP vaccination in the last year
  • Known allergy or contraindication to influenza or DTaP vaccination
  • Pregnant or breastfeeding

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Clifford Craig Foundation

Launceston, Tasmania, 7250, Australia

RECRUITING

Related Publications (28)

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MeSH Terms

Interventions

Influenza VaccinesDiphtheria-Tetanus-acellular Pertussis Vaccines

Intervention Hierarchy (Ancestors)

Viral VaccinesVaccinesBiological ProductsComplex MixturesPertussis VaccineBacterial VaccinesDiphtheria ToxoidToxoidsTetanus ToxoidVaccines, CombinedVaccines, AcellularVaccines, Subunit

Study Officials

  • Katie Flanagan, PhD FRACP

    Clifford Craig Medical Research Trust

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Kathryn Ogden, MPH FRACGP

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
BASIC SCIENCE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 3, 2016

First Posted

May 6, 2016

Study Start

May 1, 2016

Primary Completion

December 1, 2019

Study Completion

December 1, 2019

Last Updated

July 27, 2017

Record last verified: 2017-07

Data Sharing

IPD Sharing
Will share

The transcriptome data will be de-identified and deposited in a pubic database. The de-identified microbiome data may well also be made publically available.

Locations