Identification of Molecular Defects in Idiopathic Cytopenia of Undetermined Significance
试验速览
- 阶段
- 不适用
- 入组人数
- 10
- 试验地点
- 1
- 主要终点
- high-throughput sequencing
研究概览
简要总结
The project's objective is to identify and characterize somatic mutations in cases of idiopathic cytopenia of undetermined significance (ICUS) on the basis of molecular defects found in myelodysplastic syndrome (MDS), in order to validate the hypothesis whereby ICUS may be a precursor of MDS
详细描述
The project's objective is to identify and characterize somatic mutations in cases of idiopathic cytopenia of undetermined significance (ICUS) on the basis of molecular defects found in myelodysplastic syndrome (MDS), in order to validate the hypothesis whereby ICUS may be a precursor of MDS. To this end, high-throughput exon sequencing (using next-generation sequencing (NGS)) will be used to target the genes known to be mutated in MDS. This study is important for two reasons. Firstly, it will help to optimise the clinical monitoring of patients with molecular defects and considered to be at risk of progression. Secondly, it will provide a better understanding of the fundamental molecular mechanisms underlying the progression of ICUS to MDS.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Only
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Age 18 or over.
- •Haemoglobin <11 g/dl and/or a polynuclear neutrophil count <1.5.109/L and/or a platelet count <100.109/L
- •Full clinical biochemistry/haematological profiling: complete blood count, blood smear, reticulocyte count, iron status, folates, B12, TSH, creatinine, liver enzymes, ANAs, rheumatoid factor, anticardiolipin antibodies, Coombs test, EPO assay, serological tests for HIV, HVB and HVC.
- •Availability of a bone marrow differential cell count and an evaluation of myelopoiesis disorders (number of lineages, percentage of cells affected, etc.) plus Perls staining.
- •Availability of a cytogenetic analysis.
- •Voluntary provision of written, informed consent
- •Life expectancy >6 months
- •Social security coverage
排除标准
- •An obvious cause of anaemia (if isolated): iron deficiency, chronic kidney failure (clearance <60 ml/min), regenerative anaemia (reticulocytes >150G/L)
- •Vitamin B12 or B9 deficiency
- •Hepatomegaly, or clinical and/or ultrasound signs of portal hypertension
- •Clinical and/or ultrasound signs of splenomegaly
- •Abnormal liver enzyme levels: total bilirubin, alkaline phosphatases or transaminases > 1.5N; gammaGT > 2N. A history of (or diagnostic criteria during screening) auto-immune diseases such as systemic erythematous lupus, antiphospholipid syndrome or Evans syndrome.
- •An abnormal bone marrow differential cell count
- •A bone marrow karyotype revealing MDS
- •Medical, psychological or social conditions that prevent the participant from correctly understanding the study procedures.
- •Legal guardianship and incarceration.
结局指标
主要结局
high-throughput sequencing
时间窗: Day 0
The presence or absence of one or several of the following molecular defects, as detected by high-throughput sequencing: DNMT3A, TET2, IDH1/2, ASXL1, EZH2, RUNX1, EVI1, GATA2, P53, JAK2, CBL, KRAS, SF3B1, SRSF2, U2AF1, and ZRSR2.
次要结局
- phenotypic defects(Day 0)
- Appearance of MDS(6 months)
- growth of erythroid progenitors(Day 0)