ClinicalTrials.gg
CompletedNCT05413564PASSUpdated Jan 23, 2026

Impact of a Self-Exclusion Procedure Optimized by an Extension of the Suspension of Commercial Solicitations

An interventional study of optimized self-exclusion procedure by extending the suspension of commercial solicitations for a total of 9 months in Gambling Disorder, sponsored by Centre Hospitalier Universitaire de Nīmes. Completed at 1 site in France. Open to participants aged 18 Years to 99 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-01-23.

Sponsored by Centre Hospitalier Universitaire de Nīmes · Not applicable, Interventional, and Other

Phase
Not applicable
Study type
Interventional
Enrollment
2,554
Allocation
Non-randomized
Ages
18 Years to 99 Years
Sex
All
01

Study summary

Considering that self-exclusion from gambling on a particular website is an intervention for and by individuals who have developed a gambling disorder, it is currently exclusively a behavioural intervention in the sense that it prevents the behaviour Resumption of commercial solicitations only in the period when gambling is not accessible in the corresponding website , through voluntary self-exclusion (where the gambler prevents himself or herself from gambling), does not appear to be sufficient to prevent relapse. Early commercial solicitations, in the immediate intercourse after the end of the self-exlcusion period may precipitate relapse in gamblers whose behaviour change is by definition recent, and who have only received a behavioural measure. The investigators hypothesize an improved efficacy as measured by reduced gambling after a self-exclusion optimized by a period of suspension of commercial solicitations extended to 9 months, compared to self-exclusion with the standard procedure. Gamblers will be randomized according to an a priori randomization list.

Read the detailed description

This is a study evaluating the impact of PMU's implementation of an optimized self-exclusion procedure by extending the suspension of commercial solicitations for a total of 9 months, the self-exclusion being referred to as a non-medical "responsible gambling" tool, compared to the standard procedure. The self-excluded gamblers will be randomized according to an a priori randomization list, and will receive either the optimized self-exclusion procedure A or the standard self-exclusion procedure B. The study consists of a comparison between two groups A and B. The study involves non-medical gambling and socio-demographic data, routinely recorded in a regulatory manner with a permanent CNIL authorization PMU.

02

Conditions studied

  • Gambling Disorder

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03

In context

Gambling

158 studies on the registry are indexed under Gambling; 42 are open to participants now.

This study's enrollment of 2,554 is above the median of 66 across 128 interventional studies indexed under Gambling.

Browse Gambling studies →

Lead sponsor

Centre Hospitalier Universitaire de Nīmes is the lead sponsor of 595 studies on the registry; 90 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 99 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

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.

Inclusion criteria

  • 18 years or older
  • self-excluder during the recruitment period
  • Online sports betting
  • poker and horse racing player
  • account opened for at least 4 weeks
  • self-exclusion for 3 months or less (minimum 3 days).

Exclusion criteria

Exclusion Criteria:

  • Player who has objected to the use of his collected data when opening his account.
  • It's not the first self-exclusion of the inclusion period.
05

Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Non-randomized
Intervention model
Factorial assignment
Masking
None (open label)
Enrollment
2,554 participants (actual)

Study arms

  • Other
    optimized self-exclusion procedure A

    optimized self-exclusion procedure by extending the suspension of commercial solicitations for a total of 9 months

    Other: optimized self-exclusion procedure by extending the suspension of commercial solicitations for a total of 9 months

  • Other
    standard procedure

    standard self-exclusion procedure B

    Other: optimized self-exclusion procedure by extending the suspension of commercial solicitations for a total of 9 months

Interventions

  • Otheroptimized self-exclusion procedure by extending the suspension of commercial solicitations for a total of 9 months

    optimized self-exclusion procedure A

06

What researchers measure

Primary outcomes

  1. change in total net loss

    Evaluate the effect of the self-exclusion procedure optimized by extending the suspension of commercial solicitations for a total of 9 months, compared to the existing procedure, on the intensity of gambling.

    Time frame: over the last 4 weeks,between the last 4 weeks before self-exclusion T0, and the last 4 weeks at 9 months T2

Secondary outcomes

  1. change in total net loss

    Evaluate early efficacy at 6 months, maintenance of efficacy at 18 months comparison of changes according to type of play

    Time frame: between last 4 weeks prior to self-exclusion, and last 4 weeks at 6 months T1, 12 months T3 and 18 months T4

07

Study locations

1 site
  • Amandine LUQUIENS
    Nîmes, Nîmes 30029, France
08

References and documents

Publications

  • von Hammerstein C, Benyamina A, Luquiens A. Long-term efficacy of an optimized online gambling self-exclusion procedure with extended suspension of commercial solicitations: a randomized controlled trial. Harm Reduct J. 2025 Dec 30;22(1):204. doi: 10.1186/s12954-025-01339-0. PubMed 41469674 ↗
09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from May 2022 to primary completion in Nov 2022, 5 months.

Of 47 non-industry interventional studies with no phase under Gambling, half reached primary completion within 16 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 51. This study's 5 months is below that.

Counting every sponsor, half of 47 studies reached it within 16 months; a quarter within 10 and three quarters within 51.

How these figures are worked out, and which studies are left out of them.

Registered
May 24, 2022
First posted
Jun 10, 2022
StartActual
May 30, 2022
Primary completionActual
Nov 1, 2022
CompletionActual
May 1, 2024
Last update
Jan 23, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jan 23, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05413564
Responsible party
Sponsor
First posted
Jun 10, 2022
Start date
May 30, 2022
Primary completion
Nov 1, 2022
Completion
May 1, 2024
Last update
Jan 23, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jan 2026. You cannot join it, but the record below documents what was studied.

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