JAK-STAT Signaling Pathway in Pyoderma Gangrenosum

Study Purpose

The investigators hypothese that Janus kinase/signal transduction and activator of transcription (JAK/STAT) signaling pathway play a key role in pathophysiology of pyoderma gangrenosum (PG). In this study JAK/STAT signaling pathway will be investigated in the skin biopsies of PG patients

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

Yes
Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.


An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.


Searching Both is inclusive of interventional and observational studies.

Observational
Eligible Ages 18 Years - 90 Years
Gender All
More Inclusion & Exclusion Criteria

Inclusion Criteria:

  • - Pyoderma gangrenosum diagnosed with skin biopsy.
  • - Psoriasis diagnosed with skin biopsy.
  • - Hidradenitis suppurativa diagnosed with skin biopsy.
  • - Skin biopsy in healthy subjects.

Exclusion Criteria:

- This is a case-based study and there is no exclusion criteria

Trial Details

Trial ID:

This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.

NCT04792957
Phase

Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

Dokuz Eylul University
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

N/A
Principal Investigator Affiliation N/A
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Other
Overall Status Not yet recruiting
Countries
Conditions

The disease, disorder, syndrome, illness, or injury that is being studied.

Pyoderma Gangrenosum, Hidradenitis Suppurativa, Psoriasis
Additional Details

Cytokines are key molecules in the pathogenesis of inflammatory diseases. These molecules exert their effects through cell surface receptors and intracellular signaling pathways. Janus kinase/signal transduction and activator of transcription (JAK/STAT) signaling pathway is implicated in the pathogenesis of several autoimmune diseases. Pyoderma gangrenosum (PG) is an inflammatory skin disease characterized by progressive and recurrent skin ulceration of destructive course. Treatment of PG requires aggressive immunosuppressive therapy but despite the use of several agents, including tumor necrosis factor inhibitory treatments there is still an unmet need in refractory PG. Recent reports suggested activation of JAK/STAT pathway in PG and some case-based studies suggested the beneficial effect of JAK-STAT inhibitory agent in the treatment of PG. Skin biopsies obtained from PG, hidradenitis suppurativa, psoriasis and healthy subjects will be studied to evaluate JAK/STAT pathway by using immunohistochemical methods. The following immunohistochemical stains will be used to evaluate the expression of JAK/STAT pathway: JAK1, JAK2, JAK3, Tyrosine Kinase 2, STAT1, STAT2, STAT3, STAT3, STAT4, STAT5 and STAT6. Staining intensity will be recorded categorically (negative and positive). The positive staining will also be graded semi-quantitively as follows: mildly positive, moderately positive and strongly positive.

Arms & Interventions

Arms

: Pyoderma Gangrenosum

Skin biopsies obtained from patients with pyoderma gangrenosum will be studied to evaluate JAK/STAT pathway by using immunohistochemical methods.

: Hidradenitis Suppurativa

Skin biopsies obtained from patients with hidradenitis suppurativa, will be studied to evaluate JAK/STAT pathway by using immunohistochemical methods

: Psoriasis

Skin biopsies obtained from patients with psoriasis, will be studied to evaluate JAK/STAT pathway by using immunohistochemical methods

: Healthy Subjects

Skin biopsies obtained from patients with healthy subjects, will be used to control group.

Interventions

Diagnostic Test: - immunohistochemical methods

The following immunohistochemical stains will be used to evaluate the expression of JAK/STAT pathway: JAK1, JAK2, JAK3, Tyrosine Kinase 2, STAT1, STAT2, STAT3, STAT3, STAT4, STAT5 and STAT6. Staining intensity will be recorded categorically (negative and positive). The positive staining will also be graded semi-quantitively as follows: mildly positive, moderately positive and strongly positive.

Contact Information

This trial has no sites locations listed at this time. If you are interested in learning more, you can contact the trial's primary contact:

Ismail Sari, M.Sc

[email protected]

+902324122222

For additional contact information, you can also visit the trial on clinicaltrials.gov.

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