Transcriptomic Landscape of T Lymphocytes of Atopic Dermatitis, Atopic Prurigo Nodularis (of Besnier) and Non-atopic Prurigo Nodularis (of Hyde) Using Single Cell RNA-sequencing
试验速览
- 阶段
- 不适用
- 入组人数
- 20
- 主要终点
- Transcriptional profile of the T lymphocytes
研究概览
简要总结
Prurigo nodularis (PN) is a skin condition characterized by symmetrically distributed widespread, pruritic nodules that occurs in patients with chronic pruritus. There are 2 subtypes of PN depending on the association with an atopic dermatitis (AD) : atopic PN (Besnier) and non-atopic PN (Hyde). There are no approved therapies, and treatment options currently used have limited efficacy and their long-term use carries the risk of potential severe toxic effects.
The mechanisms triggering PN are still unknown. However, recent findings suggest a major role for the Th2 inflammatory pathway.
Beyond advancing the basic understanding of PN pathophysiology, our study might also pave the way for developing novel Th2-targeted therapeutic strategies for PN and AD. The primary objective of this study is to characterize the transcriptional profile of the T lymphocytes isolated from skin samples from patients with PN. This study will allow a gain a deeper understanding of the pathophysiologic mechanism of PN, a better classification of its subtypes, as well as their physiopathologic link with AD. Moreover, it will help shape new effective and safe therapeutic approaches in these diseases which are important for optimal therapeutic management.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Cross Sectional
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •More than 18 years of age
- •Signature of the written contentment
- •Clinical diagnostic of PN defined by the following: a minimum of 20 PN lesions, in total on both legs, and/or both arms; an average worst itch score of ≥
- •Atopic PN will be defined as PN associating clinical sings or history of AD according to Hanifin et Rajka criteria. Non-Atopic PN will be defined as PN non-associated with clinical sings or history of AD according to Hanifin et Rajka criteria.
- •or confirmed diagnosis of AD according to Hanifin et Rajka criteria without associated PN.
- •Washout period for topical treatments (> 1 week) ans systemic treatments (> 1 month).
- •Indication and absence of contraindication to performing a skin biopsy as part of the treatment
- •Inclusion criteria for healthy controls:
- •more than 18 years of age
- •Signature of the written contentment
- •Hospitalised in the plastic surgery department of Saint-Louis Hospital.
- •No associated inflammatory or tumoral skin condition
- •No contraindication for biopsy
- •Exclusion criteria :
- •Presence of inflammatory or tumoral skin morbidities other than PN and atopic dermatitis
- •Treatment induced pruritus
- •Pruritus secondary to other medical conditions such as bullous dermatosis, renal insufficiency, infectious diseases, ...)
- •AD under biologic therapy
- •Patient under guardianship or conservatorship
- •No health insurance coverage
- •Patient under State Medical Assistance (AME)
- •Pregnancy or breastfeeding
- •Persons deprived of their liberty by a judicial or administrative decision
- •People undergoing psychiatric care making their consent impossible
- •Adults who are the subject of a legal protection measure or unable to express their consent
- •Patients unable to read and write
- •Exclusion criteria for healthy controls:
- •Inflammatory or tumoral medical condition
- •Biological therapy for any other medical condition
- •Associated inflammatory or tumoral skin condition
- •Pregnancy or breastfeeding
- •Persons deprived of their liberty by a judicial or administrative decision
- •People undergoing psychiatric care making their consent impossible
- •Adults who are the subject of a legal protection measure or unable to express their consent
- •Patients unable to read and write
排除标准
- 未提供
结局指标
主要结局
Transcriptional profile of the T lymphocytes
时间窗: at inclusion
次要结局
- Inflammatory pathways(at inclusion)
- Molecular differences(at inclusion)