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CompletedNCT03885258Updated Mar 21, 2019

Melatonin Replacement Therapy in Pinealectomized Patients

An Early Phase 1 interventional study of Melatonin Replacement Therapy in Pineal Tumor, sponsored by University of Sao Paulo. Completed at 1 site in Brazil. Per ClinicalTrials.gov, last updated 2019-03-21.

Sponsored by University of Sao Paulo · Early Phase 1, Interventional, and Treatment

From the registry’s dates

  • Registered 1 year 10 months after the study started (first participant enrolled May 2017, registered Mar 2019).
Phase
Early Phase 1
Study type
Interventional
Enrollment
5
Allocation
Not applicable
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Study summary

This is an open-label, single-arm, single-center, proof-of-concept study to assess the effects of melatonin on cardiac autonomic activity in melatonin non-proficient pinealectomized patients.

Read the detailed description

This is an open-label, single-arm, single-center, proof-of-concept study to assess the effects of melatonin on cardiac autonomic activity in melatonin non-proficient pinealectomized patients. The study consists of a screening period, followed by a 3-month melatonin treatment period, and a 6-month washout follow-up period. Adverse events were monitored with respect to seriousness, intensity, relationship to treatment, action taken and outcome of the event.

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Conditions studied

  • Pineal Tumor

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Keywords

  • melatonin
  • pinealectomy
  • Cardiac Autonomic System
  • heart rate variability
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In context

Pinealoma

66 studies on the registry are indexed under Pinealoma; 11 are open to participants now.

This study's enrollment of 5 is below the median of 26 across 43 interventional studies indexed under Pinealoma.

Browse Pinealoma studies →

Lead sponsor

University of Sao Paulo is the lead sponsor of 1,035 studies on the registry; 95 are open to participants now.

Of its 8 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

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

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Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Accepts healthy volunteers
No

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

  • patients with pinealectomy and all of the following criteria were considered for admission to the clinical trial:
  • children, adolescents and young adults 0 months to 25 years of age;
  • signed written (patient or his/her parents/legal guardian);
  • willing and able to complete the clinical trial procedures, as described in the protocol
  • no recurring tumor after pinealectomy and subsequent chemotherapy
  • absence of circulating melatonin evaluated by salivary melatonin Elisa assay

Exclusion criteria

Exclusion Criteria:

  • patients with cardiac arrhythmias
  • potentially non-compliant subjects judged by the investigator to be unsuitable for the study
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

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Study design

Phase
Early Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
5 participants (actual)

Study arms

  • Experimental
    Melatonin Replacement Therapy

    Melatonin (Aché Pharmaceutics, Brazil) 3 mg, administered in the evening, 30 minutes before the usual bedtime, every day for 3 months. After discontinuation of melatonin therapy, patients are followed up for 6 months to assess safety parameters and cardiac autonomic activity.

    Drug: Melatonin Replacement Therapy

Interventions

  • DrugMelatonin Replacement Therapy

    Melatonin (Aché Pharmaceutics, Brazil), 3 mg, administered in the evening, 30 minutes before the usual bedtime, every day for 3 months. After discontinuation of melatonin therapy, patients are followed up for 6 months to assess safety parameters and cardiac autonomic activity.

06

What researchers measure

Primary outcomes

  1. cardiac autonomic function - heart rate variability

    The cardiac autonomic function was determined through heart rate variability (HRV) measures after polysomnography ECG recordings.

    Time frame: 9 months

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Study locations

1 site
  • University of São Paulo
    São Paulo, Sao Paulo 05508-000, Brazil
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References and documents

Publications

  • Cipolla-Neto J, Amaral FGD. Melatonin as a Hormone: New Physiological and Clinical Insights. Endocr Rev. 2018 Dec 1;39(6):990-1028. doi: 10.1210/er.2018-00084. PubMed 30215696 ↗
  • Baltatu OC, Amaral FG, Campos LA, Cipolla-Neto J. Melatonin, mitochondria and hypertension. Cell Mol Life Sci. 2017 Nov;74(21):3955-3964. doi: 10.1007/s00018-017-2613-y. Epub 2017 Aug 8. PubMed 28791422 ↗
  • Campos LA, Cipolla-Neto J, Michelini LC. Melatonin modulates baroreflex control via area postrema. Brain Behav. 2013 Mar;3(2):171-7. doi: 10.1002/brb3.123. Epub 2013 Feb 17. PubMed 23531786 ↗
  • Pereira VL Jr, Dobre M, Dos Santos SG, Fuzatti JS, Oliveira CR, Campos LA, Brateanu A, Baltatu OC. Association between Carotid Intima Media Thickness and Heart Rate Variability in Adults at Increased Cardiovascular Risk. Front Physiol. 2017 Apr 26;8:248. doi: 10.3389/fphys.2017.00248. eCollection 2017. PubMed 28491040 ↗
  • Campos LA, Pereira VL Jr, Muralikrishna A, Albarwani S, Bras S, Gouveia S. Mathematical biomarkers for the autonomic regulation of cardiovascular system. Front Physiol. 2013 Oct 7;4:279. doi: 10.3389/fphys.2013.00279. PubMed 24109456 ↗
  • Shaffer F, Ginsberg JP. An Overview of Heart Rate Variability Metrics and Norms. Front Public Health. 2017 Sep 28;5:258. doi: 10.3389/fpubh.2017.00258. eCollection 2017. PubMed 29034226 ↗
  • Campos LA, Bueno C, Barcelos IP, Halpern B, Brito LC, Amaral FG, Baltatu OC, Cipolla-Neto J. Melatonin Therapy Improves Cardiac Autonomic Modulation in Pinealectomized Patients. Front Endocrinol (Lausanne). 2020 Apr 30;11:239. doi: 10.3389/fendo.2020.00239. eCollection 2020. PubMed 32431667 ↗

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 21, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03885258
Responsible party
Ovidiu Constantin Baltatu (Co-PI to PI - José Cipolla-Neto, Anhembi Morumbi University) — Principal investigator
First posted
Mar 21, 2019
Start date
May 2, 2017
Primary completion
Nov 30, 2018
Completion
Feb 28, 2019
Last update
Mar 21, 2019

Oversight

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

Not currently enrolling

This study is completed, as verified in Mar 2019. You cannot join it, but the record below documents what was studied.

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