Clinical trial NCT03920696: Pityriasis Lichenoides : Anatomo-clinical Aspects and Follow-up
Official title: Pityriasis Lichenoides: Anatomo-clinical Aspects and Follow-up Monocentric Retrospective Study
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: Pityriasis Lichenoides
Keywords: Pityriasis Lichenoides;
cutaneous lymphoma
lymphoproliferation
Lead sponsor: Assistance Publique - Hôpitaux de Paris
Sponsor class: OTHER
First posted: 2019-04-19
Enrollment: 52
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: RETROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Adults with Pityriasis Lichenoides

Brief summary: Introduction: Pityriasis lichenoides (PL) is an inflammatory dermatitis of undetermined origin consisting of specific papular lesions reflecting an "indolent" lymphoproliferative state.

The current classification is confusing because it mixes semiological and chronological notions.

The objectives of this study are to better describe the clinical, epidemiological, histological, phenotypic and evolutionary aspects of PL in an adult population.

Methods: Investigators will perform a retrospective cohort study including patients with clinical and histological diagnosis of PL from the coding of the Department of Pathology of Henri-Mondor Hospital and from medical records and photographs of lesions if available, between January 2012 and August 2018. A follow-up telephone interviews will also be proposed to each patient to collect evolution data. Photographs will be systematically reviewed as well as cutaneous samples and a genomic analysis will be performed.

Conclusion: Investigators would like to better understand clinical, histological features and evolutionary aspects of PL in an adult population.


Eligibility criteria: Inclusion Criteria:

* Age ≥ 18 years
* Patients with Pityriasis Lichenoides selected from histological coding OT0431, seen at Henri Mondor and with a diagnosis verified from medical records.

Exclusion Criteria:

* Histological coding error
* Histological records of patients in care outside Henri Mondor (cases referred for histological expertise only but not seen clinically)
* Clinical lesions incompatible with Pityriasis Lichenoides according to classically published semiological data
* Missing or insufficient medical records for data exploitation

Primary outcomes:
measure: To study clinical Aspects of Pityriasis Lichenoides on a large series of adult patients
timeFrame: It will be measured within 6 months of enrollment
Secondary outcomes:
measure: To study histological features of Pityriasis Lichenoides
timeFrame: It will be measured within 6 months of enrollment
measure: To study molecular features of Pityriasis Lichenoides
timeFrame: It will be measured within 6 months of enrollment
measure: To study the treatment during patients' monitoring
timeFrame: It will be measured within 6 months of enrollment
measure: To study the duration of outbreak during patients' monitoring
timeFrame: It will be measured within 6 months of enrollment
measure: To study the relapse during patients' monitoring
timeFrame: It will be measured within 6 months of enrollment
measure: To study the number of outbreaks during patients' monitoring
timeFrame: It will be measured within 6 months of enrollment
Other outcomes:
Locations:
Study officials:
affiliation: Assistance Publique Hôpitaux de Paris - CHU Henri Mondor - Créteil
name: Saskia ORO, Doctor
role: PRINCIPAL_INVESTIGATOR
References:
citation: Bowers S, Warshaw EM. Pityriasis lichenoides and its subtypes. J Am Acad Dermatol. 2006 Oct;55(4):557-72; quiz 573-6. doi: 10.1016/j.jaad.2005.07.058.
citation: Zang JB, Coates SJ, Huang J, Vonderheid EC, Cohen BA. Pityriasis lichenoides: Long-term follow-up study. Pediatr Dermatol. 2018 Mar;35(2):213-219. doi: 10.1111/pde.13396. Epub 2018 Jan 9.
citation: Lalevee S, Ortonne N, Hotz C, Schlemmer F, Beldi-Ferchiou A, Delfau-Larue MH, Wolkenstein P, Chosidow O, Ingen-Housz-Oro S. Febrile ulceronecrotic Mucha Habermann disease mimicking aggressive epidermotropic CD8+ cytotoxic T-cell lymphoma: a diagnostic challenge. Eur J Dermatol. 2018 Dec 1;28(6):834-835. doi: 10.1684/ejd.2018.3410. No abstract available.
citation: Geller L, Antonov NK, Lauren CT, Morel KD, Garzon MC. Pityriasis Lichenoides in Childhood: Review of Clinical Presentation and Treatment Options. Pediatr Dermatol. 2015 Sep-Oct;32(5):579-92. doi: 10.1111/pde.12581. Epub 2015 Mar 26.
citation: Nair PS. A clinical and histopathological study of pityriasis lichenoides. Indian J Dermatol Venereol Leprol. 2007 Mar-Apr;73(2):100-2. doi: 10.4103/0378-6323.31894.
citation: Khachemoune A, Blyumin ML. Pityriasis lichenoides: pathophysiology, classification, and treatment. Am J Clin Dermatol. 2007;8(1):29-36. doi: 10.2165/00128071-200708010-00004.
citation: Zaaroura H, Sahar D, Bick T, Bergman R. Relationship Between Pityriasis Lichenoides and Mycosis Fungoides: A Clinicopathological, Immunohistochemical, and Molecular Study. Am J Dermatopathol. 2018 Jun;40(6):409-415. doi: 10.1097/DAD.0000000000001057.
citation: Sibbald C, Pope E. Systematic review of cases of cutaneous T-cell lymphoma transformation in pityriasis lichenoides and small plaque parapsoriasis. Br J Dermatol. 2016 Oct;175(4):807-9. doi: 10.1111/bjd.14605. Epub 2016 Jun 20. No abstract available.
citation: Vonderheid EC, Kadin ME, Telang GH. Commentary about papular mycosis fungoides, lymphomatoid papulosis and lymphomatoid pityriasis lichenoides: more similarities than differences. J Cutan Pathol. 2016 Apr;43(4):303-12. doi: 10.1111/cup.12653. Epub 2015 Dec 22. No abstract available.