ClinicalTrials.gg
CompletedNCT03584308Updated May 22, 2019

Efficacy of VIUSID® Plus GLIZIGEN® in Patients With Papilloma Virus Esophageal

A Phase 2 interventional study of Viusid® and Glizigen® in Papilloma Viral Infection, Papillomavirus Infections and Esophageal Viral Wart, sponsored by Catalysis SL. Completed at 1 site in Cuba. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2019-05-22.

Sponsored by Catalysis SL · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Registered 2 years 8 months after the study started (first participant enrolled Oct 2015, registered Jun 2018).
Phase
Phase 2
Study type
Interventional
Enrollment
110
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

A randomized, double-blind, phase II clinical trial was conducted versus placebo in 110 patients with esophageal human papillomavirus. The experimental group will receive the VIUSID® plus GLIZIGEN® nutritional supplements, administered on an outpatient basis for 3 months. The control group will receive placebo from Viusid plus Glizigen placebo. It is expected that patients in the experimental group have a 30% higher rate of elimination of the virus than patients in the placebo group after treatment. The study will be conducted in the Superior Digestive Tract consultation of the Institute of Gastroenterology of Havana, Cuba.

Read the detailed description

Initially the study was planned as an adaptive study without seams, phase II / III for 150 patients. 75 in each therapeutic arm. The sample size was calculated with parameters of phase III studies, but establishing an early stop rule, with an intermediate analysis. For the calculation it was taken into account that the expected percentage of elimination of the virus by spontaneous remission in immunocompetent patients, reported internationally is on average 35%. It is intended that in the group of patients to whom VIUSID® plus GLIZIGEN® will be administered, this figure is ≥ 65%. In other words, it is desired to reach a minimum difference of approximately 30% between both groups. Considering a type I error of 5% (adjusted to 2.5% by an intermediate evaluation), a power of 90%, plus 5% of dropouts or losses to follow-up, the minimum number of patients to recruit is 150 patients in total , 75 in each therapeutic arm.

However, by decision of the promoter the study was stopped with 55 patients in each arm, 110 patients in total. And established as a phase II trial.

02

Conditions studied

  • Papilloma Viral Infection
  • Papillomavirus Infections
  • Esophageal Viral Wart
  • Esophageal Verrucous Carcinoma

Keywords

  • Papillomavirus
  • Viusid
  • Glizigen
  • Papilloma virus Esophageal
  • Antioxidant
03

In context

Papillomavirus Infections

576 studies on the registry are indexed under Papillomavirus Infections; 132 are open to participants now.

This study's enrollment of 110 is below the median of 235 across 402 interventional studies indexed under Papillomavirus Infections.

Browse Papillomavirus Infections studies →

Lead sponsor

Catalysis SL is the lead sponsor of 53 studies on the registry; 4 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
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

  • Older adults between 18 and 65 years of both sexes.
  • Patients residing in the provinces of Havana, Artemisa and Mayabeque.
  • Voluntariness of the patient to participate in the study. Informed and written consent.
  • Women of childbearing age should have negative pregnancy test or use effective methods such as intrauterine devices, hormonal contraceptives, barrier method or tubal ligation.

Exclusion criteria

Exclusion Criteria:

  • Pregnancy or breastfeeding.
  • to the performance of upper digestive endoscopy.
  • Psychiatric conditions that do not favor the administration of treatment and follow-up.
  • History of to another similar product.
  • Severe acute allergic states.
  • Patients with concomitant diagnosis of esophageal tumor or other causes of infectious esophagitis.
  • Present an associated chronic illness in the decompensation phase (heart disease, diabetes, hypertension, renal failure, AIDSl).
  • Patients who are receiving another product under investigation.
Terms in these criteria, in plain language(3)

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.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
110 participants (actual)

Study arms

  • Experimental
    Viusid® + Glizigen®

    The experimental arm will receive nutritional supplements Viusid + Glizigen

    Dietary Supplement: Viusid® · Dietary Supplement: Glizigen®

  • Placebo comparator
    Placebo

    The control group will receive a placebo of both (Viusid and Glizigen).

    Dietary Supplement: Viusid Placebo · Dietary Supplement: Glizigen Placebo

Interventions

  • Dietary supplementViusid®

    The VIUSID nutritional supplement is presented in the form of envelopes and will be administered orally diluted in water, juice or milk, according to the patient's preference and will be administered 3 times a day, 15 minutes before breakfast, lunch and dinner.

  • Dietary supplementGlizigen®

    The GLIZIGEN® product is presented in spray bottles and will be administered orally to swallow, away from meals 2 times a day.

  • Dietary supplementViusid Placebo

    The placebo of VIUSID nutritional supplement is presented in the form of envelopes and will be administered orally diluted in water, juice or milk, according to the patient's preference and will be administered 3 times a day, 15 minutes before breakfast, lunch and dinner .

  • Dietary supplementGlizigen Placebo

    The placebo of GLIZIGEN® product is presented in spray bottles and will be administered orally to swallow, away from meals 2 times a day.

06

What researchers measure

Primary outcomes

  1. Clinical improvement of the lesions of the virus in esophageal mucosal tissue sample

    Absence of coilocytes / papilloma in the paraffin sample

    Time frame: 3 months

  2. Clinical negativization of the virus in esophageal mucosal tissue sample

    Negativization of the virus in fresh sample of the mucosa in the PCR study

    Time frame: 3 months

Secondary outcomes

  1. Evaluation of esophageal pathology

    Acanthosis: Yes or No

    Time frame: 3 months

  2. Evaluation of esophageal pathology

    Papillary hyperplasia lamina propria: Yes or no

    Time frame: 3 months

  3. Evaluation of esophageal pathology

    Hyperplasia of the basal layer of the epithelium: Yes or No

    Time frame: 3 months

  4. Evaluation of esophageal pathology

    Dyskeratosis: Yes or No

    Time frame: 3 months

  5. Evaluation of esophageal pathology

    Dysplasia: Yes (Low Degree or High Degree) or No

    Time frame: 3 months

  6. Toxicity due to the Treatment administered

    It will be determined through the reporting of adverse events that are presented to the research product

    Time frame: 3 months

07

Study locations

1 site
  • Gastroenterology Institute
    Vedado, La Habana 10600, Cuba
08

References and documents

Individual participant data

Plan to share: Yes

Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Clinical study report

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 22, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03584308
Lead sponsor
Catalysis SL
Responsible party
Sponsor
First posted
Jul 12, 2018
Start date
Oct 15, 2015
Primary completion
May 15, 2018
Completion
Dec 15, 2018
Last update
May 22, 2019

Oversight

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

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Studies of the drugs tested here: Viusid · Glycyrrhizic Acid

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