The Prevstain Trial (TPT)

February 5, 2020 updated by: NELSON DE LUCCIA, University of Sao Paulo General Hospital

Double Blind Randomized Clinical Trial Comparing Pycnogenol Versus Placebo for Pigmentation Prevention After Treatment With Varicose Veins With Foam Sclerotherapy

To evaluate whether oral supplementation with Pycnogenol (Flebon®) can interfere with skin hyperpigmentation after polidocanol foam sclerotherapy in patients with mild to moderate chronic venous insufficiency (CEAP C2 and C3) compared with the use of Placebo.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

A randomized double-blind study with research centers in the state of São Paulo (Hospital das Clínicas de São Paulo (HC-SP)) is proposed. Treatment groups: Group 1: Elastic stockings + FlebonGroup 2: Use of elastic socks + Placebo de Flebon.1 Visit 1 - Screening and Selection (D-15) • Evaluation of inclusion and non-inclusion criteria • FICT signature • Clinical evaluation • Aberdeen questionnaire (without schematic design) • Randomization • Dispensation of medication (placebo and Pycnogenol) • Dismissal of use diary 2. Visit 02 D0 - Initiation of treatment (+/- 2 days) • Performing the procedure by Sclerotherapy • Record of adverse events • Pre-sclerotherapy photographic record • Clinical evaluation • investigational product (placebo and Pycnogenol) • Dismissal of new use diary (elastic stockings and investigational product) • Withdrawal criteria • Visit 03 - D7 - Return of 7 days (+/- 2 days) • Evaluation of withdrawal criteria • Evaluated adherence to treatment by use diary • Return of control (eventual drainage) • Record of adverse events • Clinical evaluationVisit 04 - D30 - Return 30 days after visit 2 (+/- 2 days) • Treatment adherence assessment by use diary • Photographic control I • Hyperpigmentation scale • Pigment size assessment, if any • Record of adverse events • Assessment of withdrawal criteria • Assessment clinical • Investigational Product Dispensation (Placebo and Pycnogenol) • New Usage Diary DispensationView 05- D60 - Return 60 Days After Sight 3 (+/- 2 days) • Usage Diary Treatment Adherence Assessment • Photographic Control II • Hyperpigmentation Scale • Pigment size assessment, if any • Record of adverse events • Assessment of withdrawal criteria • Assessment • Dispensation of medication (placebo and Pycnogenol) • Dispensation of new use diaryVisit 06 -D90 - Return 90 days after sight 04 (+/- 2 days) • Evaluation of treatment adherence by use diary • Evaluation of criteria • Photographic control III •Pigment size assessment, if any • Aberdeen questionnaire application (without schematic drawing) • Medication suspension • Hyperpigmentation scale • Adverse event recording • Research participant satisfaction rating • Clinical assessmentPhotographic recording of the legs will be performed before 30, 60 and 90 days in 03 (three) incidences and evaluated by 01 blind observer. The photographic records will be made by camera following the same parameters, namely: 60 cm distance to 50 cm from the ground, not using flash, with artificial lighting (ceiling light), without zoom. All generated images will be archived in JPEG (Joint Photographic File Format) format. Images must be downloaded within 5 days of photographic registration and inserted into All images should be encoded as follows: IDENTIFICATION OF PARTICIPANTS + DATE OF PHOTOGRAPH REGISTRATION CO (00/00/0000) + VISIT. In addition, a sticker with the research participant's initials and date of photograph registration should be visible to the image. The blinded study medium will evaluate all photographs at the end of the study, making a comparison between them to inform the presence and the evolution of hyperpigmentation due to foam sclerotherapy, when they occur.For this, the Torok Hyperpigmentation Scale will be applied at D 30, D 60 and D90.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
338

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

14 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Female participants, non-pregnant, aged ≥18 years.
  • Phototype Fitzpatrick II to IV
  • Participant with mild to moderate chronic venous insufficiency (classification C2 and C3 of the clinical criterion CEAP classification).
  • Participant who underwent treatment of the great saphenous vein
  • and. Indication for performing lower limb sclerotherapy followed by elastopression for 7 days.
  • With indication for procedure by 1% polidocanol sclerotherapy
  • Demonstrate understanding of procedures, study restrictions and willingness to participate as evidenced by written informed consent and attendance of all scheduled visits
  • Good overall mental and health with, in the opinion of the investigator or medically qualified designee, no clinically significant and relevant abnormalities in medical history or upon physical examination.
  • Exclusion Criteria:
  • The. Pregnancy or intention to become pregnant during the study or breastfeeding women.
  • Any history of significant dermatological conditions or diseases or medical conditions known to alter skin appearance or physiological response (eg, diabetes, heart failure, hypothyroidism, or hyperthyroidism), which could, in the opinion of the Investigator, prevent and / or interfere with the assessment of the reaction of the test site.
  • Active acne (local or widespread) that may interfere with study results.
  • Participants currently using any medication, which, in the opinion of the investigator, may affect the evaluation of the study product or subject the participant to excessive risk.
  • Use of the following topical or systemic medications: immunosuppressants, antihistamines, non-hormonal anti-inflammatory drugs and corticosteroids up to 2 weeks before the screening visit.
  • Oral or topical treatment with vitamin A or retinoic acid and / or its derivatives up to 1 month before the screening visit.
  • Have participated in any clinical study within the last 12 months prior to the start of the study;
  • Any clinical and / or laboratory alteration that, in the Investigator's opinion, may interfere with the participant's safety.
  • Use of anticoagulant or antiplatelet agent
  • BMI greater than 40 kg / m² Uncontrolled diabetes or hypertension
  • Recent thrombosis (less than 6 months from inclusion)
  • no Participants with a history of polyamide or elastane allergy

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Pycnogenol oral product to prevent Hyperpigmentation
Evaluate hyperpigmentation post foam sclerotherapy with placebo versus pycnogenol use
Drug: Pycnogenol Oral Product
pycnogenol use to prevent hyper pigmentation after foam sclerotherapy
Placebo Comparator: Placebo to prevent hyperpigmentation
Evaluate hyperpigmentation post foam sclerotherapy with placebo versus pycnogenol use
Other: Placebo
Placebo

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
photographic evaluation of the presence or absence of skin hyperpigmentation after foam sclerotherapy
Time Frame: 90 days
To evaluate the impact of Pycnogenol (Flebon®) use on skin hyperpigmentation after sclerotherapy procedure in relation to placebo group, according to the presence or absence of hyperpigmentation.Hyperpigmentation will be assessed through standardized photographs taken by the study researchers and evaluated by a blinded dermatologist in the study. The answer will be dichotomous, yes or no.
90 days

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
The use of Pycnogenol (Flebon®) triggers change cutaneous pigmentation;
Time Frame: 90 days
The degree of pigmentation involvement will be assessed using the Hyperpigmentation Scale (Torok) by a blinded dermatologist in the study after 30, 60 and 90 days of treatment.
90 days
The use of Pycnogenol (Flebon®) triggers a change skin pigmentation.
Time Frame: 90 days
The size of the pigmentation will be evaluated by the use of a conventional standardized ruler, considering the largest pigmentation axis, verified in millimeters, after 30, 60 and 90 days of treatment.
90 days
The use of Pycnogenol (Flebon®) change the signs and symptoms of chronic venous insufficiency by applying a CVI-specific quality of life questionnaire.
Time Frame: 90 days
Improvement of signs and symptoms of chronic venous insufficiency will be assessed by applying the Aberdeen questionnaire (without schematic design) at baseline and after 90 days of treatment.
90 days
the degree of patient satisfaction with the use of Pycnogenol (Flebon®) regarding the skin aspect of the region submitted to the procedure;
Time Frame: 90 days
The degree of patient satisfaction will be made subjectively by the study participants through a scale from 0 to 6, 0 being totally dissatisfied and 6 fully satisfied after 90 days of treatment.
90 days
pycnogenol side effects
Time Frame: 90 days
report any type of adverse event
90 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Sao Paulo General Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Anticipated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
February 28, 2020

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
March 28, 2020

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 28, 2021

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 28, 2019

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 15, 2019

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 18, 2019

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 7, 2020

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 5, 2020

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2020

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 08890918.0.0000.0068

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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