Haploinsufficiency of the RBM22 and SLU7 Genes in Del(5q) Myelodysplastic Syndromes

NCT ID: NCT04701229

Last Updated: 2021-01-08

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

UNKNOWN

Total Enrollment

100 participants

Study Classification

OBSERVATIONAL

Study Start Date

2020-09-30

Study Completion Date

2023-09-30

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

Myelodysplastic syndromes (MDS) are malignant hematopathies of the elderly characterized by persistent cytopenias and the presence of deregulated clonal hematopoiesis. The risk of progression to acute myeloid leukemia (AML) is variable. Acquired cytogenetic abnormalities are found in less than 50% of de novo cases and up to 80% in secondary MDS. The deletion of the long arm of chromosome 5 (written del(5q)) is the most common abnormality in MDS (15%). Del(5q) MDS has a good prognosis, with a median survival of 6 years and a 15% risk of progression to AML. However, their life expectancy is shorter than the general population, and the quality of life of patients is diminished. These treatments are not that effective over a long period of time or not well tolerated, and the majority of patients die from causes related to their MDS, such as infections (38%), progression to AML (15%), or bleeding (13%). Two genes, RBM22 and SLU7, coding for proteins of the same complex involved in splicing pre-messenger RNA are carried on the long arm of chromosome 5. We investigate the pronostic impact and the predictive value of the double haploinsufficiency of the RBM22 and SLU7 genes in del(5q) myelodysplastic syndromes isolated or not compared to the single haploinsufficiency of RBM22 and normal karyotype myelodysplastic syndromes.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Myelodysplastic Syndromes Myelodysplastic Syndrome With Isolated Del(5Q) Myelodysplastic Syndrome With Del(5Q)

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Observational Model Type

COHORT

Study Time Perspective

RETROSPECTIVE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

normal karyotype

control group

somatic cytogenetic and genetic characterization

Intervention Type GENETIC

investigating the presence of some genes allelles (RBM22, SLU7, RBM27, other on chromosome 5) by FISH, and sequencing of a classical panel of myeloid genes including RBM22, SLU7, for somatic identification of genetic alterationss of the blasts.

del5q-RBM22neg-SLU7neg

this group is characterized by its karyotype. It presents a 5q deletion, a loss of RBM22, a loss of SLU7.

somatic cytogenetic and genetic characterization

Intervention Type GENETIC

investigating the presence of some genes allelles (RBM22, SLU7, RBM27, other on chromosome 5) by FISH, and sequencing of a classical panel of myeloid genes including RBM22, SLU7, for somatic identification of genetic alterationss of the blasts.

del5q-RBM22neg-SLU7pos

this group is characterized by its karyotype. It presents a 5q deletion, a loss of RBM22 but no loss of SLU7

somatic cytogenetic and genetic characterization

Intervention Type GENETIC

investigating the presence of some genes allelles (RBM22, SLU7, RBM27, other on chromosome 5) by FISH, and sequencing of a classical panel of myeloid genes including RBM22, SLU7, for somatic identification of genetic alterationss of the blasts.

del5q-RBM22pos-SLU7neg

this group is characterized by its karyotype. It presents a 5q deletion, and no loss of RBM22, but a loss in SLU7

somatic cytogenetic and genetic characterization

Intervention Type GENETIC

investigating the presence of some genes allelles (RBM22, SLU7, RBM27, other on chromosome 5) by FISH, and sequencing of a classical panel of myeloid genes including RBM22, SLU7, for somatic identification of genetic alterationss of the blasts.

del5q-RBM22pos-SLU7pos

this group is characterized by its karyotype. It presents a 5q deletion, and no loss of RBM22 nor SLU7

somatic cytogenetic and genetic characterization

Intervention Type GENETIC

investigating the presence of some genes allelles (RBM22, SLU7, RBM27, other on chromosome 5) by FISH, and sequencing of a classical panel of myeloid genes including RBM22, SLU7, for somatic identification of genetic alterationss of the blasts.

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

somatic cytogenetic and genetic characterization

investigating the presence of some genes allelles (RBM22, SLU7, RBM27, other on chromosome 5) by FISH, and sequencing of a classical panel of myeloid genes including RBM22, SLU7, for somatic identification of genetic alterationss of the blasts.

Intervention Type GENETIC

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* Patients diagnosed with del5q MDS isolated or not
* The clinical and biological data are known at the time of diagnosis.
* The clinical and biological data are known 1 year after the diagnosis
* Consent for the collection of samples for research purposes
* Non-opposition obtained

Exclusion Criteria

* Patients under judicial protection (guardianship, ...)
* Refusal to participate
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

University Hospital, Brest

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Responsibility Role SPONSOR

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Marie-Bérengère TROADEC

Role: PRINCIPAL_INVESTIGATOR

CHRU Brest

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

CHRU de Brest

Brest, , France

Site Status RECRUITING

Groupe Français de cytogénétique Hématologique

Paris, , France

Site Status RECRUITING

Groupe Français des Myélodysplasies

Paris, , France

Site Status RECRUITING

Countries

Review the countries where the study has at least one active or historical site.

France

Central Contacts

Reach out to these primary contacts for questions about participation or study logistics.

Marie-Bérengère TROADEC

Role: CONTACT

(33)298223324

Nathalie DOUET-GUILBERT

Role: CONTACT

(33)298223324

Facility Contacts

Find local site contact details for specific facilities participating in the trial.

Marie-Bérengère TROADEC

Role: primary

Florence Nguyen-Khac

Role: primary

Michaela Fontenay

Role: primary

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

SMD-RMB22 (29BRC20.0029)

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.