Initiation of Exogenous Female Sex Hormones and Airway Responsiveness to Methacholine - A Prospective Cohort Study
NCT Number: NCT06578169
Status: NOT_YET_RECRUITING
Study Type: OBSERVATIONAL
Conditions: Asthma
Interventions: DRUG: Hormonal Therapy Agent
Sponsor: Copenhagen University Hospital, Hvidovre
Sex: FEMALE
Age: ADULT, OLDER_ADULT
Enrollment: 300
Study Design: Observational Model: |Time Perspective: p
Start Date: 2024-09-01
Completion Date: 2027-09-01

Summary:
The project aims to investigate the effect of female sex hormone treatment (both contraceptive treatment and hormone therapy during menopause) on bronchial hyperreactivity in adult women. The study is a prospective cohort study involving 300 women, examining airway responsiveness before and after the initiation of hormone treatment, whether as hormone therapy in menopause or contraceptive treatment. Participants will be recruited from general practitioners in the Capital Region of Denmark. Lung function, bronchial hyperreactivity, airway inflammation, and body composition will be assessed before and after hormone treatment. Blood samples will also be collected and stored for later analysis of inflammation markers. The study will include women aged 18 to 75 who are about to begin hormone treatment.

Primary Outcome Measures: Airway responsiveness to methacholine, Airway responsiveness to methacholine challenge before and after initiation of HC/HRT treatment reported as a dose-response-ratio defined as change in %FEV1 per μmol, 30 to 14 days before initiation of HC/HRT and 7-14 days and 42-56 days following initiation
Secondary Outcome Measures: Changes in lung function measured as forced expiratory volume in first second (FEV1), forced vital capacity (FVC),, 30 to 14 days before initiation of HC/HRT and 7-14 days and 42-56 days following initiation|Change from baseline as measured by airway oscillometry (AOS), 30 to 14 days before initiation of HC/HRT and 7-14 days and 42-56 days following initiation|Changes in airway inflammation measured as FeNO, 30 to 14 days before initiation of HC/HRT and 7-14 days and 42-56 days following initiation|Changes in blood alarmins such as blood eosinophils, interleukin 4 (IL-4), IL-5, IL-6, IL-8, IL-10, IL-13, IL-17, IL-23, IL-33, TSLP, IL-1 and Tumor Necrosis Factor alfa (TNF-alfa), 30 to 14 days before initiation of HC/HRT and 7-14 days and 42-56 days following initiation|Medical Research Council Dyspnea Scale (MRC) will be used to evaluate subjective dyspnea. MRC will be evaluated by medical interview., 30 to 14 days before initiation of HC/HRT and 7-14 days and 42-56 days following initiation|Changes in allergy measured as skin prick test (SPT) to common inhaled allergens, 30 to 14 days before initiation of HC/HRT and 7-14 days and 42-56 days following initiation|Changes in body composition - fat distribution, 30 to 14 days before initiation of HC/HRT and 7-14 days and 42-56 days following initiation|Changes in body composition measured as fat percent, 30 to 14 days before initiation of HC/HRT and 7-14 days and 42-56 days following initiation|Changes in body composition measured as fat mass (kg), 30 to 14 days before initiation of HC/HRT and 7-14 days and 42-56 days following initiation|Baseline Dyspnea Index (BDI) will be used to evaluate subjective dyspnea. Will be evaluated by medical interview., 30 to 14 days before initiation of HC/HRT and 7-14 days and 42-56 days following initiation