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Spots Global Cancer Trial Database for Functional Characterization of Thrombopoietin/cMPL Receptor Mutations in Myeloproliferative Neoplasia

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Trial Identification

Brief Title: Functional Characterization of Thrombopoietin/cMPL Receptor Mutations in Myeloproliferative Neoplasia

Official Title: Functional Characterization of Thrombopoietin/cMPL Receptor Mutations in Myeloproliferative Neoplasia

Study ID: NCT06246006

Interventions

Gene sequencing

Study Description

Brief Summary: The MPL gene is implicated in two groups of hematological pathologies: congenital amegakaryocytic thrombocytopenia (CAMT) and Phi negative myeloproliferative neoplasia (MPN). Fifty germline mutations have been identified in CAMT, yet only a dozen activating mutations have been described in MPN. Most are somatic, distributed mainly in the transmembrane (TM) and juxtamembrane (JM) domains. However, a few rare germline mutations located in the extracellular domain (ECD) have also been reported: K39N, R102P and P106L. Next generation sequencing technology has been used to study the complete MPL gene, identifying numerous variants, most of unknown significance. The study investigators have a series comprising 41 variants of unknown significance, whose allelic frequencies suggest a germline origin for 80% of them. Their distribution within the MPL gene is similar to that of inactivating mutations, except that they were discovered in the context of suspected myeloproliferative disease. Characterizing the activity of these variants would confirm the diagnosis of MPN, opening the door to specific treatment (cytoreductive, JAK2 inhibitor or interferon). It also has an important prognostic value, particularly in the case of MPN, for which life expectancy varies from 5 to 7 years, with terminal progression to acute myeloid leukemia (AML in 15 to 20% of cases) or bone marrow failure. Using a battery of functional assays, this study aims to characterize these variants.

Detailed Description:

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

CHU de Nîmes, Nîmes, , France

Contact Details

Name: Serge Carillo

Affiliation: CHU de Nimes

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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