Human Leukocyte Antigen Class II (DRB1 and DQB1) Alleles and Haplotypes Frequencies in Patients With Pemphigus Vulgaris Among the Russian Population

March 10, 2022 updated by: Sechenov University

Increased Frequencies of Certain HLA Class II Alleles DRB1 and DQB1 in PV Patients Compared to Those in Healthy Donors Have Been Reported in Various Populations and Repeatedly Confirmed. Among the Russian Population, no Studies About the Association of PV and HLA Class II Genes Have Been Conducted. Thus, the Purpose of This Study Was to Investigate HLA Class II Alleles and Haplotypes in Russian Patients With Pemphigus Vulgaris.

Pemphigus is a rare autoimmune life-threatening blistering condition affecting skin and mucous membranes. Pemphigus belongs to a family of polygenic disorders. Several different genes encoding molecules regulate pemphigus autoimmunity. Many trials focused on HLA investigation. Increased levels of certain HLA class II alleles frequencies in pemphigus have been reported in various populations. However, they were not investigated in the Russian population.

The aim of our study is to investigate HLA class II alleles and haplotypes in Russian patients with pemphigus.

Methods

Patients and controls

We are recruiting 120 patients with pemphigus. The diagnosis was based on clinical and histopathological findings and confirmed by immunofluorescent techniques (direct and indirect immunofluorescent tests). Before sampling, written consent was obtained from each subject. A single blood sample for HLA typing was obtained from all subjects. This study has been approved by the Ethics Committee of Sechenov University, Russia. Phenotypic and allelic frequencies were compared with healthy blood donors (n=100) registered in Sechenov University blood center.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Anticipated)

120

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

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

  • ADULT
  • OLDER_ADULT
  • CHILD

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

120 patients with confirmed diagnosis of pemphigus will be enrolled in the study Age >18 years Sex: both females and males

100 healthy controls

Description

Inclusion Criteria:

  • Signed informed consent
  • Age of patients >18 years
  • Confirmed diagnosis

Exclusion Criteria:

  • No as pemphigus is a life-threatening condition

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

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Healthy controls
Genetic: A single blood sample for HLA typing
Extracting of DNA from the blood sample using PCR-reaction
Patients with pemphigus
Genetic: A single blood sample for HLA typing
Extracting of DNA from the blood sample using PCR-reaction

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Estimation of HLA-DRB1 and HLA-DQB1 alleles frequencies in PV patients and controls
Time Frame: May 2017 - 2023
The frequencies of HLA alleles will be counted directly from genotyping data, while the frequencies of haplotypes will be estimated with an expectation-maximization algorithm using the ARLEQUIN software package (version 3.11), leading to maximum-likelihood estimates of gene frequencies. To compare the differences between frequencies in the donor and patient groups the Fisher exact test will be performed.
May 2017 - 2023

Collaborators and Investigators

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

Sponsor

Sechenov University

Collaborators

Pirogov Russian National Research Medical University

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 (ACTUAL)

May 17, 2017

Primary Completion (ANTICIPATED)

November 17, 2022

Study Completion (ANTICIPATED)

March 17, 2023

Study Registration Dates

First Submitted

March 10, 2022

First Submitted That Met QC Criteria

March 10, 2022

First Posted (ACTUAL)

March 17, 2022

Study Record Updates

Last Update Posted (ACTUAL)

March 17, 2022

Last Update Submitted That Met QC Criteria

March 10, 2022

Last Verified

March 1, 2022

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • #03-22

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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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