Lactobacillus Rhamnosus GG Oral Treatment Efficacy on Vernal Keratoconjunctivitis Treatment

January 28, 2009 updated by: Campus Bio-Medico University

Multicenter, Randomised, Double Masked, Controlled Studies on the Efficacy of Lactobacillus Rhamnosus GG Treatment in Preventing Vernal Keratoconjunctivitis VKC) Relapses.

This interventional study aims to evaluate the efficacy of oral administration of Lactobacillus Rhamnosus GG in preventing relapses of ocular inflammation in Vernal Keratoconjunctivitis (VKC) patients.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Vernal keratoconjunctivitis (VKC) is a chronic allergic disease, characterised by ocular surface inflammation lasting all year with seasonal relapses. Active phases of VKC are characterised by intense ocular symptoms and require treatment with topical steroids to control inflammation and corneal damage. To date, safe and effective therapies in preventing relapses of VKC are not available. Recently, the use of oral administration of probiotics for allergic diseases have been proposed. No data are available on the effects of probiotics on ocular allergies. This multicenter, double-masked, randomised, controlled clinical trial will allow to obtain more data on the efficacy of oral treatment with Lactobacillus Rhamnosus GG in patients affected by VKC. Patients with VKC will be treated with Lactobacillus Rhamnosus GG or placebo in addition to ketotifen fumarate 0.025% eye drops (standard treatment). The number of relapses per year, signs and symptoms of the disease, total symptom score (TSyS), total sign score (TSS), biochemical and molecular parameters will be evaluated at different time points.

Study Type

Interventional

Enrollment (Anticipated)

48

Phase

  • Phase 2
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Italy
      • Genova, Italy
        • University of Genova
      • Padua, Italy
        • University of Padua
      • Rome, Italy, 00155
        • University Campus Bio-Medico

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

Ages Eligible for Study

5 years to 16 years (Child)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Diagnosis of VKC performed on the basis of personal and family history of systemic allergic diseases, clinical examination (presence of conjunctival tarsal and/or limbal papillae) and presence of eosinophils in the conjunctival scraping.

Exclusion Criteria:

  • Contact lens wearers,
  • Patients affected by other ocular diseases,
  • Patients subjected to ocular surgery in the preceding 6 months,
  • Patients under eye drop or systemic treatments for other diseases,
  • Patients enrolled in experimental trials in the preceding 6 months.

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: Prevention
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: 1
Drug: Lactobacillus Rhamnosus GG
patients are treated with oral Lactobacillus Rhamnosus GG once daily for six months
Placebo Comparator: 2
Drug: placebo (sugar)
Placebo will be administered to patients once daily for six months

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
To evaluate a difference in the number of relapses of ocular inflammation for year between Lactobacillus Rhamnosus GG and placebo treated groups. Relapses will be defined as at least 100% increase of the sum of hyperemia,
Time Frame: 2 years
2 years

Secondary Outcome Measures

Outcome Measure
Time Frame
Differences of specific symptoms and signs, TSyS, TSS, Quick questionnaire subscales,biochemical and molecular parameters will be evaluated at baseline, after 1, 3 and 6 months of treatment and after 1 month of treatment discontinuation
Time Frame: 2 years
2 years

Collaborators and Investigators

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

Sponsor

Campus Bio-Medico University

Collaborators

University of Padova
University of Genova

Investigators

  • Study Director: Stefano Bonini, MD, University Campus Bio-Medico

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

March 1, 2007

Primary Completion (Actual)

September 1, 2008

Study Completion (Actual)

January 1, 2009

Study Registration Dates

First Submitted

March 7, 2007

First Submitted That Met QC Criteria

March 7, 2007

First Posted (Estimate)

March 8, 2007

Study Record Updates

Last Update Posted (Estimate)

January 29, 2009

Last Update Submitted That Met QC Criteria

January 28, 2009

Last Verified

January 1, 2009

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • LACTO2
  • Eudract number 2007-000209-31

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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