Clinical trial · Interventional
Improving Cancer-Related Outcomes in Shift Workers
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
Shift work with circadian disruption has been linked with increased breast cancer incidence. The mechanisms for this effect are not yet completely understood. This study evaluates the impact of a previously developed sleep intervention in shift workers at risk of breast cancer; and assesses mediating variables that may explain the relationship between shift work and breast cancer. A sample of women night shift workers were provided with a sleep intervention. The intervention is a standard approach used in a sleep clinic and is delivered by telephone by a trained intervener. Hypothesis: The intervention will improve sleep in women night shift workers, which will in turn have a positive impact on biological and behavioural risk factors associated with breast cancer and quality of life.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Breast Cancer | Malignant Breast Neoplasm | CURATED_EXACT | 0.92 |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Sleep intervention | Behavioral | — | UNRESOLVED |
Design
Arms and outcomes
Arms (1)
- type
- OTHER
- label
- Sleep intervention
- description
- Sleep intervention
- interventionNames
- Behavioral: Sleep intervention
Primary outcomes (1)
- measure
- Change in sleep quality
- timeFrame
- Baseline, 6 months
- description
- Self-reported "good" sleep quality at baseline and 6 months
Secondary outcomes (31)
- measure
- Change in melatonin
- timeFrame
- Baseline, 6 months
- description
- Change in melatonin at baseline and 6 months
Eligibility
Eligibility (as posted)
- Sex
- Female
- Minimum age
- 40 Years
- Maximum age
- 65 Years
Show eligibility criteria text
Inclusion Criteria: * Women aged 40-65 years * Working or living in Greater Vancouver Area * Read and understand English * Work rotating or permanent night shift at least 3 times per month, for at least 2 years * Received a screening mammogram within the past 3 years Exclusion Criteria: * History of breast cancer * On active cancer therapy for any cancer * Pregnant * Diabetes requiring drug treatment
References
Publications (0)
Data not yet available