NCT06414057

Brief Summary

Individuals with experience of homelessness, substance use/addiction, transactional sex, and incarceration experience significant health inequities across a wide range of health conditions. This inequity includes cervical cancer with individuals in these populations less engaged with both routine human papillomavirus (HPV) vaccination and cervical cancer screening programmes, yet also at higher risk of developing cervical cancer. Opportunistic vaccination is recommended by the Joint Committee on Vaccination and Immunisation for 'other at risk/vulnerable groups' who may benefit (such as people with experience of transactional sex or incarceration) at clinical discretion. However, there is limited evidence on the feasibility, uptake, attitudes and impact of vaccination in these at-risk groups and no nationally funded programme. This mixed methods exploratory study seeks to generate evidence to inform the optimal service design. Core objectives are to: 1) assess the feasibility and acceptability of offering opportunistic HPV vaccination during standard sexual health care to women at high risk of HPV and cervical cancer; 2) identify the type-specific prevalence of HPV among recruited participants; and 3) describe participants' perceptions and experiences of accessing routine HPV vaccination and cervical screening services, and/or this opportunistic (research) service. The investigators will seek to recruit women with experience of homelessness, substance use/addiction, transactional sex, and incarceration. The study will include trans-men and non-binary people at risk of cervical cancer with the same risk experiences. Potential participants will be identified prospectively via attendance at specialist sexual health services in Scotland. Participants will be offered HPV vaccination and testing, and/or an in-depth research interview. Participation can be completed within one clinic visit. The full vaccination course is available via participation (min/max does spacing 6/12 months) and participants testing positive for high-risk type HPV can/will be followed up in full and supported in accessing treatment.

Trial Health

77
On Track

Trial Health Score

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

Enrollment
500

participants targeted

Target at P75+ for all trials

Timeline
6mo left

Started Jul 2025

Geographic Reach
1 country

1 active site

Status
recruiting

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

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress63%
Jul 2025Oct 2026

First Submitted

Initial submission to the registry

May 10, 2024

Completed
4 days until next milestone

First Posted

Study publicly available on registry

May 14, 2024

Completed
1.1 years until next milestone

Study Start

First participant enrolled

July 7, 2025

Completed
10 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 30, 2026

Completed
6 months until next milestone

Study Completion

Last participant's last visit for all outcomes

October 31, 2026

Expected
Last Updated

April 8, 2026

Status Verified

April 1, 2026

Enrollment Period

10 months

First QC Date

May 10, 2024

Last Update Submit

April 2, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • Uptake

    Number of participants taking up HPV screening and initial HPV vaccine dose during the clinic visit

    Baseline

Secondary Outcomes (4)

  • Clinician/self sampling

    Baseline

  • Vaccine completion

    12 months

  • HPV prevalence

    4 weeks

  • Follow-up tests

    6 months

Study Arms (1)

All participants

Investigators will offer Gardasil-9 and HPV self-swab screening to up to 500 individuals across the three study sites, aiming to recruit 120-180 individuals within each of the three participating health boards over a 6-9 month timeframe. Participants will be asked to provide a vaginal swab sample for baseline HPV testing.

Other: Offering opportunistic HPV vaccine during routine sexual health clinic visits

Interventions

Investigators will offer Gardasil-9 and HPV self-swab screening to up to 500 individuals across the three study sites, aiming to recruit 120-180 individuals within each of the three participating health boards over a 6-9 month timeframe. Participants will be asked to provide a vaginal swab sample for baseline HPV testing.

All participants

Eligibility Criteria

Age25 Years - 45 Years
Sexfemale
Healthy VolunteersNo
Age GroupsAdult (18-64)
Sampling MethodNon-Probability Sample
Study Population

Adult women, trans men, or non-binery individuals with a cervix attending routine sexual health services who aslo have experience of substance use/addiction, living in custodial settings, homelessness, or involvement in transactional sex.

You may qualify if:

  • Individuals will be eligible for participation in components 1 and/or 2 if they:
  • have a cervix
  • are aged 25-45 years (inclusive)
  • are able to provide informed consent for themself
  • And have experience of either:
  • substance use/addiction
  • living in custodial settings
  • homelessness
  • involvement in transactional sex

You may not qualify if:

  • Individuals will be excluded from participation if they:
  • Do not have a cervix due to surgery or other reasons
  • Are known to have completed the full vaccination schedule (as per JCVI criteria for their age and immunocompetency) (Excluded from component 1 (vaccination and HPV screening) only - still able to participate in component 2 (individual interview))
  • Have had a confirmed anaphylactic reaction to a previous dose of HPV vaccine.
  • Have had a confirmed anaphylactic reaction to any component of the vaccine. Practitioners must check the marketing authorisation holder's SmPC for details of vaccine components.
  • Have a history of severe (i.e. anaphylactic reaction) to latex where the vaccine is not latex free.
  • Are known to be pregnant.
  • Are suffering from an acute severe febrile illness (the presence of a minor infection is not a contraindication for immunisation).
  • Additionally, PGDs advise caution where a neurological condition is believed to be progressing or there is neurological deterioration and therefore, individuals meeting this criteria will be excluded (from component 1 only).

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

NHS Lothian

Edinburgh, United Kingdom

RECRUITING

Biospecimen

Retention: SAMPLES WITHOUT DNA

Vaginal swab for HPV genotyping

Study Officials

  • Christine Campbell

    University of Edinburgh

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Mia Closs, PhD

CONTACT

Christine Campbell

CONTACT

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 10, 2024

First Posted

May 14, 2024

Study Start

July 7, 2025

Primary Completion

April 30, 2026

Study Completion (Estimated)

October 31, 2026

Last Updated

April 8, 2026

Record last verified: 2026-04

Data Sharing

IPD Sharing
Will not share

Data will not be made available as we will be undertaking a follow-up study in 5-10 years

Locations