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Genetic Variants Affecting the Clinical Severity of Beta Thalassemia

Screening and Identification of Genetic Modifiers Which Affecting the Phenotype Severity of Beta Thalassemia Patients

Status
UNKNOWN
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04918056
Enrollment
1300
Registered
2021-06-08
Start date
2017-01-01
Completion date
2023-06-25
Last updated
2021-06-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Beta Thalassemia

Keywords

beta thalassemia, Hb F, Onset age, Genetic Modifier

Brief summary

β-thalassemia is one of the most common single gene disorder in Southern China. The phenotypic severity of beta thalassemia widely varies from mild to severe forms. Patients with the same beta thalassemia genotype show wide phenotypic variability that ranges from moderate to severe disease due to various genetic modifiers of disease severity. The aim of this study is to looking for the genetic factors which could affect the severity of beta thalassemia.

Detailed description

The understanding of the genotype-phenotype correlation is a very important issue to the precise diagnosis of beta thalassemia. However, the genotype-phenotype correlation of Beta thalassemia is so complex that the pathogenesis of some patients remains uncertain and cannot be explained by known mechanisms. The study of the role of the genetic variants in modulating beta thalassemia phenotype could brought us considerable novel and interesting information in this area. We will collecting more than 1000 beta thalassemia patients , analyzing their clinical data and genome data, and association study will be conducted to screen the positive genetic variants which exert a significant effect on both the HbF levels and onset ages of beta thalassemia patients.

Interventions

DIAGNOSTIC_TESTHematological Analysis and Genetical Analysis

Hematological Analysis: Hematological parameters were determined with an automated hematology analyzer (Sysmex, Japan), and hemoglobin analysis was performed with either high-performance liquid chromatography (Bio-Rad, USA) or capillary electrophoresis (Sebia, France and Helena, USA). Genetical Analysis: Genomic DNA was extracted from peripheral blood (PB) by using a standard phenol/chloroform method. The genotypes of samples are analyzed by NGS assay.

Sponsors

303rd Hospital of the People's Liberation Army
CollaboratorOTHER
Liuzhou Municipal Maternity and Child Healthcare Hospital
CollaboratorUNKNOWN
Zhuhai Municipal Maternal and Child Healthcare Hospital
CollaboratorUNKNOWN
Dong Guan Maternal and Child Health Hospital
CollaboratorUNKNOWN
Nanfang Hospital, Southern Medical University
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

* Diagnosed with β-thalassemia

Exclusion criteria

* Iron Deficiency Anemia

Design outcomes

Primary

MeasureTime frameDescription
Genetic variants which could influence the phenotype of beta thalassemia1 yearIdentified a group of single-nucleotide polymorphisms (SNPs) that contribute to β-thalassemia

Countries

China

Contacts

Primary ContactXiangmin Xu, Prof. Dr.
xixm@smu.edu.cn(20) 61648293

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026