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Subtypes and Prognostic Factors in Erdheim-Chester Disease

NCT06317246 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 70

Last updated 2024-03-19

No results posted yet for this study

Summary

Erdheim-Chester Disease (ECD) is a rare form of histiocytosis characterized by the proliferation of blood cells, known as histiocytes, which infiltrate various organs and tissues, often causing irreversible damage. The causes of the pathology are still unknown. Although the disease typically affects adult individuals, cases of pediatric-onset ECD have been described. However, there is a lack of detailed information on the phenotypic characteristics of these patients, and reliable data on response to specific therapies and long-term outcomes are missing. Three patients referred to our reference center for Histiocytosis present a concomitant BRAF-mutated neoplasm. Such an association could be due to the presence of mosaicisms for the BRAF V600E mutation. Mosaicism is a biological event defined as the presence of more than one genetically dissimilar cell population in the same organism and is an increasingly studied field, both in normal and pathological conditions. If proven in ECD as well, this mechanism could contribute to providing answers to the still open questions regarding the development of this disease.

Conditions

  • Erdheim-Chester Disease

Interventions

GENETIC

Investigation of BRAF mosaicism

The study of BRAF mosaicism will be conducted on biopsy samples from patients with ECD and other neoplasms co-occurring with the BRAFV600E mutation. The samples will be labeled with anti-Pu.1-Alexa Fluor 647 antibody (which binds to macrophages), then DNA will be extracted using FACS method and amplified using MDA (Qiagen Repli-G Single-Cell kit). Quality control will be performed using Quant-it (ThermoScientific) and Agilent 4200 TapeStation. Eligible samples will undergo digital droplet PCR (ddPCR) and sequencing. ddPCR probes for wild-type and mutant alleles will be used. Sequencing will be performed using Illumina HiSeq 2500 system

Sponsors & Collaborators

  • Meyer Children's Hospital IRCCS

    lead OTHER

Study Design

Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
1 Year
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2020-09-15
Primary Completion
2024-09-15
Completion
2024-12-15

Countries

  • Italy

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06317246 on ClinicalTrials.gov