ISRCTN ISRCTN53701620
DOI https://doi.org/10.1186/ISRCTN53701620
Secondary identifying numbers B3566, CPMS 46980
Submission date
26/07/2023
Registration date
08/08/2023
Last edited
05/09/2023
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Infections and Infestations
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English Summary

Background and study aims
The COVID-19 home antibody testing study will invite Avon Longitudinal Study of Parents and Children (ALSPAC) participants who previously completed the COVID-19 questionnaire to complete a home antibody test. This is part of a collaborative effort across UK cohorts to collect serological data on past infection status. In particular, cohorts have been selected to provide information on prevalence across important areas of variation – ethnicity, age, socioeconomic status and geography.

Who can participate?
Volunteers aged 28 to 50 years old of the ALSPAC longitudinal study

What does the study involve?
This is an antibody research study. In this study, the results of antibody tests that participants have taken at home are used to help understand how many people in Children of the 90s may have been infected with the virus which causes COVID-19.

What are the possible benefits and risks of participating?
The aim of the study was to have results that inform public policy/public health in the time of a pandemic. Risks include potential bruising associated with the test kit.

Note, this was an antibody research study rather than a medical device study. Covid19 test kits had not been licensed when this study ran. Because of this, the study was run as a device study.

Where is the study run from?
ALSPAC (Children of the 90s), University of Bristol (UK)

When is the study starting and how long is it expected to run for?
April 2020 to January 2021

Who is funding the study?
1. Medical Research Council (UK)
2. Wellcome Trust (UK)
3. University of Bristol (UK)

Who is the main contact?
Nicolas Timpson, N.J.Timpson@bristol.ac.uk (UK)

Contact information

Prof Nic Timpson
Principal Investigator

Oakfield House
Oakfield Grove
Bristol
BS8 2BN
United Kingdom

ORCiD logoORCID ID 0000-0002-7141-9189
Phone +44 (0)1173310131
Email N.J.Timpson@bristol.ac.uk
Mr Paul Hazell
Public

Deputy Chief Operating Officer
ALSPAC (Children of the 90s)
Population Health Sciences
Bristol Medical School
University of Bristol
Oakfield House
Bristol
BS8 2BN
United Kingdom

Phone +44 (0)117 4553686
Email Paul.hazell@bristol.ac.uk

Study information

Study designCase-control across within a longitudinal study
Primary study designObservational
Secondary study designCase-control study
Study setting(s)Community
Study typeScreening
Participant information sheet 44008_PIS_v0.1.pdf
Scientific titleSerological testing for COVID-19 in ALSPAC (G0/G1)
Study hypothesisSerological testing for COVID-19 in ALSPAC (G0/G1) (Lay title: COVID-19 home antibody testing study) will invite ALSPAC participants who have previously completed a COVID-19 questionnaire to complete a home antibody test.

This is part of a collaborative effort across UK cohorts to collect serological data on past infection status. In particular, a set of cohorts have been selected to provide information on prevalence across 4 important areas of variation – ethnicity, age, socio-economic status and geography. (Please note each cohort is running its studies separately and are have its own protocol and route to ethics approval).
Ethics approval(s)

Approved 21/07/2020, ALEC - ALSPAC ethics and Law committee (ALSPAC (Children of the 90s), Bristol, BS8 2BN, United Kingdom; +44 (0)117 455 3687; lynn.molloy@bristol.ac.uk), ref: 110264

ConditionCOVID-19 home antibody testing study
InterventionOur outcome measure is lateral flow test derived evidence of positive antibody response to COVID-19 given knowledge of the sensitivity and specificity of the Fortress Home Test kit. This is relevant given our objectives in this work.

The broad objective of this work (and contribution to the work already underway by REACT and UKBiobank) is the collection of epidemiological-grade biological test data for COVID-19 infection across a series of select studies across the UK which provide information on prevalence across 4 main axes of variation important for developing mitigation strategy relevant evidence (age, geography, socio-economic position, ethnicity/ancestry) and with the ability to assess this against information on existing comorbidities. The study's aim is to have results that are policy useful in a short period reflecting the burden of COVID-19 retrospectively across these important gradients but also to allow for the effective planning of research into the nature of the events before, during and after infection. This can only be done in longitudinal studies with retrospective data that are continuing (and part of funded examinations into COVID-19 studies) in the future. The Avon Longitudinal Study of Parents and Children (ALSPAC) is the first of 5 studies to have DHSC procured Fortress lateral flow tests available to do this.

This approach will use the same testing approach as the existing REACT-2 study (https://www.reactstudy.org) and consequently, methods are based directly on this successful investigation which has recruited and tested over 100,000 participants. Participants are invited to read the instructions of the antibody kit and do the test themselves at home. The test uses a drop of blood taken from your finger. An instruction booklet is provided with the test for detailed guidance on taking the test.

Participants are also asked to go online to complete a short questionnaire that will ask them to:
1. Record any COVID-19 symptoms you may have had in recent months
2. Record your test result
3. Upload a photograph of your test result (this step is optional)
In total, this should all take around 45 minutes.
Intervention typeDevice
Pharmaceutical study type(s)Not Applicable
PhaseNot Applicable
Drug / device / biological / vaccine name(s)COVID-19 home antibody test
Primary outcome measureCovid 19 infection status measured using a COVID-19 home antibody test at one timepoint
Secondary outcome measuresThe are no secondary outcome measures
Overall study start date20/04/2020
Overall study end date20/01/2021

Eligibility

Participant type(s)Population
Age groupAdult
Lower age limit28 Years
Upper age limit50 Years
SexBoth
Target number of participants7000
Participant inclusion criteriaEligible participants in ALSPAC, a longitudinal study
Participant exclusion criteria1. Any participant who responded ‘No’ to the question that asked if they would be happy for the study team to send information about research involving testing for COVID-19 in the ‘Learning more about COVID-19’ questionnaire
2. Increased risk of bleeding (participants will be asked at the consenting stage to self-declare any issues related to bleeding disorders)
3. Participants outside the UK. Costs and timescales for postage outside the UK make this impractical.
4. Participants who are flagged as deceased, withdrawn, no to questionnaires and no to contact.
Recruitment start date16/09/2020
Recruitment end date14/10/2020

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centre

At participants homes
ALSPAC (Children of the 90s)
Population Health Sciences
Oakfield House
Bristol
BS8 2BN
United Kingdom

Sponsor information

University of Bristol
University/education

Avon Longitudinal Study of Parents and Children (ALSPAC) (Children of the 90s) Core funding
Population Health Sciences
Oakfield House
Bristol
BS8 2BN
England
United Kingdom

Phone +44 (0)1173310131
Email N.J.Timpson@bristol.ac.uk
Website https://www.bristol.ac.uk/alspac/
ROR logo "ROR" https://ror.org/0524sp257

Funders

Funder type

Research council

Medical Research Council
Government organisation / National government
Alternative name(s)
Medical Research Council (United Kingdom), UK Medical Research Council, MRC
Location
United Kingdom
University of Bristol
Government organisation / Universities (academic only)
Alternative name(s)
Universitas Bristolliensis, bristoluniversity, bristoluni
Location
United Kingdom
Wellcome Trust
Private sector organisation / Trusts, charities, foundations (both public and private)
Alternative name(s)
Wellcome, WT
Location
United Kingdom

Results and Publications

Intention to publish date22/05/2022
Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryAvailable on request
Publication and dissemination planPlanned publication in a high-impact peer-reviewed journal
IPD sharing planThrough numerous media types, the ALSPAC communications team continue to summarise and describe the footprint of ALSPAC research (http://www.bristol.ac.uk/alspac/covid-19/). This includes usual social media routes and looks to acknowledge the diversity of the study. This is an essential addition for a volunteer participant group like ALSPAC as it provides an important route to disseminate results aimed specifically at population-based or epidemiological findings. Please find a link to ALSPAC’s Access Policy - ALSPAC_Access_Policy.pdf (bristol.ac.uk).

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Funder report results 24/01/2022 07/08/2023 No No
Participant information sheet version 0.1 07/08/2023 No Yes
Preprint results 22/05/2022 07/08/2023 No No
Protocol file version 2.1 01/08/2020 07/08/2023 No No
Results article results 24/01/2023 07/08/2023 Yes No

Additional files

44008_Protocol_v2.1_01August2020.pdf
44008_PIS_v0.1.pdf

Editorial Notes

05/09/2023: Internal review.
07/08/2023: Trial's existence confirmed by the ALSPAC Law and Ethics Committee (ALEC).