NCT06696378

Brief Summary

Introduction: Breast cancer (BC) remains the leading cause of cancer in women with nearly 1.4 million new cases worldwide annually and 27.000 in Spain. Increasingly effective oncology therapies, however, have numerous adverse effects such as muscle degeneration, fatigue, decreased physical function and aerobic capacity, and deteriorating quality of life. In this sense, physical activity (PA) seems to be an interesting non-pharmacological strategy to alleviate these serious complications and with potential benefits for women with BC. Melatonin (N-acetyl-5 methoxytryptamine) is an indolic compound present with pleiotropic bioactions that regulates the circadian rhythm, antioxidant, anti-inflammatory, immunostimulant, cardioprotective, antidiabetic, antiobesity, neuroprotective, and antiaging actions. Furthermore, in recent years, many studies have described the key role of melatonin in preventing and developing cancer. The general anticarcinogenic mechanisms include epigenetic control, cell proliferation modulation, cell cycle regulation, apoptosis induction, and telomerase inhibition. Melatonin also exerts antiestrogenic activity, which is particularly significant in hormone-dependent tumors, regulating the expression and transactivation of the estrogen receptor, and modulating the enzymes involved in the local synthesis of estrogens. Despite all the mentioned properties, the use of melatonin in daily clinical practice is very limited, and additional studies are needed to better establish the role of this hormone in oncological clinical applications against different types of cancer. Objective: To analyze the effect of supplementation with 4 g/day of melatonin for 10 weeks on muscle damage (CK and LDH), hormonal responses (estradiol, testosterone, cortisol and testosterone/cortisol ratio), antioxidant capacity (BAP and d-ROMs), Exerkins (Irisin and Sestrin 2), physical performance (handgrip strength, RPE and SPPB), anthropometry (body mass, BMI and fat mass) and WHOQOL-BREF (physical and psychological health, social relationships and environment) in women over 60 years of age who have suffered breast cancer and who follow a physical training program. Methods: A total of 20 female volunteers between 60 and 73 years old (age: 65.5±4.52 years, BMI: 25.83±2.67 and body fat percentage: 33.73±5.54) who followed a physical activity adapted to their age and abilities are the members. of this study. The volunteers were divided into two groups: placebo (CG; n = 10) and supplemented with 5 g/day of melatonin (GI; n = 10). Differtent test were performed muscle damage (CK, and LDH), hormonal responses (estradiol, testosterone, cortisol, and testosterone/cortisol ratio), antioxidant capacity (BAP and d-ROMs), Exerkins (Irisin and Sestrin 2), physical performance (Hand-grip strength, RPE and SPPB), anthropometrics (Body mass, BMI and fat mass), and WHOQOL-BREF (physical and psychological health, social relationships and environment) were analyzed at the beginning (T1) and at the end of the 10 weeks of intervention (T2).

Trial Health

57
Monitor

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
120

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Jan 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

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

August 22, 2024

Completed
3 months until next milestone

First Posted

Study publicly available on registry

November 20, 2024

Completed
2 months until next milestone

Study Start

First participant enrolled

January 15, 2025

Completed
11 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 20, 2025

Completed
4 months until next milestone

Study Completion

Last participant's last visit for all outcomes

May 1, 2026

Completed
Last Updated

November 20, 2024

Status Verified

August 1, 2024

Enrollment Period

11 months

First QC Date

August 22, 2024

Last Update Submit

November 18, 2024

Conditions

Keywords

Brear CancerMelatoninquality of lifephysical performancehealth biomarkersantioxidant capacityanthropometrics parametersExerkins

Outcome Measures

Primary Outcomes (2)

  • Irisin

    Exerkin secreted primarily by skeletal muscle in response to exercise

    first day of study and after 60 days of supplementation (end of study)

  • Sestrin-2

    Exerkin a highly conserved stress-responsive protein, can be triggered by various noxious stimuli, such as hypoxia, DNA damage, oxidative stress, endoplasmic reticulum (ER) stress, and inflammation.

    first day of study and after 60 days of supplementation (end of study)

Secondary Outcomes (13)

  • BAP

    first day of study and after 60 days of supplementation (end of study)

  • d-ROMs

    first day of study and after 60 days of supplementation (end of study)

  • World Health Organization Quality of Life - BREF (WHOQOL-BREF)

    first day of study and after 60 days of supplementation (end of study)

  • Creatine kinase (CK)

    first day of study and after 60 days of supplementation (end of study)

  • Lactate dehydrogenase (LDH)

    first day of study and after 60 days of supplementation (end of study)

  • +8 more secondary outcomes

Study Arms (2)

Melatonin supplementation group

EXPERIMENTAL

2 capsules distributed in a single daily oral intake at 9 p.m. or 30 minutes before bedtime, whichever came first, for 10 weeks.

Dietary Supplement: Melatonin 6 mg

Placebo supplementation group

PLACEBO COMPARATOR

2 capsules distributed in a single daily oral intake at 9 p.m. or 30 minutes before bedtime, whichever came first, for 10 weeks.

Other: Placebo

Interventions

Melatonin 6 mgDIETARY_SUPPLEMENT

wo capsules per day; Each capsule includes 3mg Melatonin Nutrifoods® Laboratories, Barcelona, Spain) by the Magistral Formulation Laboratory of a Pharmacy (Soria, Spain), following the rules of the Royal Spanish Pharmacopoeia (Ministry of Health, Government of Spain). Melatonin has a technical data sheet that guarantees its composition and purity (Reference No.: DIE-134).

Melatonin supplementation group
PlaceboOTHER

Two capsules per day; Each capsule includes 100-mg maltodextrin capsules were used as a placebo to match the color and texture of the Melatonin tablets to ensure blinding.

Placebo supplementation group

Eligibility Criteria

Age60 Years - 80 Years
Sexfemale(Gender-based eligibility)
Gender Eligibility DetailsOlder women who have suffered from breast cancer
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Study participants were women with a history of ductal carcinoma in situ, lobular carcinoma in situ, or stage 1 to 3 breast cancer (5 years or more since diagnosis), not currently receiving chemotherapy or hormone therapy, postmenopausal, and Eastern Cooperative Oncology Group (ECOG) score ≤ 1

You may not qualify if:

  • women who had exercised regularly for at least 20 minutes once and at least twice a week in the 3 months before the study
  • Stage IV breast cancer or systemic recurrences
  • Known autoimmune diseases: systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), and multiple sclerosis.
  • Severe kidney disease
  • Use of adjuvant hormonal therapy, oral estrogen or progesterone replacement therapy, luteinizing hormone-releasing hormone agonists currently or within the past 60 days
  • month ≥ post-chemotherapy
  • Concomitant use of sleeping pills every night at bedtime
  • Concomitant use of black cohosh, flaxseed, or soy in pill or supplement form
  • Functional limitation using the Barthel scale (less than 100 = maximum score) and the Lawton-Brody scale (less than 8 = maximum value).
  • Uncontrolled hypertension (\>180/100 mm Hg).
  • Uncontrolled atrial or ventricular arrhythmias, dissecting aortic aneurysm, severe aortic stenosis, acute endocarditis/pericarditis
  • Acute thromboembolic disease.
  • Moderate/severe chronic obstructive pulmonary disease (COPD) with Bodex index C or D Recent bone fracture (last month).
  • Any other circumstance that your doctor considers prevents physical activity.
  • Neoadjuvant chemotherapy or radiotherapy
  • +11 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Faculty of Health Sciences, University of Valladolid Soria Campus

Soria, Soria, 42004, Spain

RECRUITING

Related Publications (1)

  • Celorrio San Miguel AM, Cacharro LM, Santamaria G, Garrosa M, Celorrio San Miguel M, Roche E, Garrosa E, Fernandez-Lazaro D. Adjuvant melatonin therapy during exercise prescription in breast cancer survivors on physical and anthropometric parameters, quality of life, and hormonal response. A randomized controlled trial. Front Sports Act Living. 2025 Jun 23;7:1594733. doi: 10.3389/fspor.2025.1594733. eCollection 2025.

MeSH Terms

Interventions

Melatonin

Intervention Hierarchy (Ancestors)

TryptaminesIndolesHeterocyclic Compounds, 2-RingHeterocyclic Compounds, Fused-RingHeterocyclic CompoundsHormonesHormones, Hormone Substitutes, and Hormone Antagonists

Central Study Contacts

Diego Fernández Lázaro, Professor; PhD

CONTACT

Cesar Ignacio Fernández Lázaro, Professor; PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Masking Details
Double (Investigator, Participants)
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Parallel group placebo-controlled randomized clinical trial
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor Doctor

Study Record Dates

First Submitted

August 22, 2024

First Posted

November 20, 2024

Study Start

January 15, 2025

Primary Completion

December 20, 2025

Study Completion

May 1, 2026

Last Updated

November 20, 2024

Record last verified: 2024-08

Locations