Use Massive Parallel Sequencing and Exome Capture Technology to Sequence the Exome of Fanconi Anemia Children and Their Patents

Sponsor

Xiaofan Zhu (Other)

Overall Status

Available

CT.gov ID

NCT01995305

Collaborator

(none)

Location

Study Details

Study Description

Brief Summary

Fanconi anemia is a rare autosomal or sex linked recessive genetic disease. The disease is characterized by bone marrow hematopoiesis failure, multiple congenital abnormalities, and susceptibility to neoplastic diseases. The cells of FA patients are extremely sensitive to MMC and DEB. The symptoms and ages of FA patients are different, so by comparing the exome of FA patients and their parents, the mutations that were accumulated in FA patients could be found, and these genes might be sensitive to repairment and be important for hematopoiesis maintainance.

Condition or Disease	Intervention/Treatment	Phase
Fanconi Anemia Autosomal or Sex Linked Recessive Genetic Disease Bone Marrow Hematopoiesis Failure, Multiple Congenital Abnormalities, and Susceptibility to Neoplastic Diseases. Hematopoiesis Maintainance.	Genetic: human whole exome Genetic: whole genomic

Detailed Description

Heterogeneity of FA. In the research of animal model, the phenotypes of FANCA, FANCC and FANCG knockout mice are similar. They grow up and develop normally, without any severe blood disease or tumor. However, they show chromosome instablity and highly sensitivity to MMC. And they have gonadal dysfunction and fertility defects. From this we conclude that the severe physical deformity of FA patients might be induced by other mutations. By comparing among the FA patients and between FA patiens and normal people, we look forward to find the mutated genes and verify their relationship with the physical deformity.

Even in 90% of FA patients the bone marrow failure will eventually occur, but the starting age ranges from 8-84. And Immuno-inhibition therapy has no effects on FA. Other DNA repair dysfunction diseases have higher rate of tumor, but not so high rate of bone marrow failure as FA does, which implies that the FA protein has the key role in hematopoietic stem cell maintainance. In FancC-/- mice, young mice is insensitive to DNA crosslinks with comet assay, but not adult mice, indicating that the accumulation of DNA damage during time leads to DNA repairment defects. by comparing the exome of FA patients and their parents, the mutations that were accumulated in FA patients could be found, and these genes might be sensitive to repairment and be important for hematopoiesis maintainance.

Study Design

Study Type:

Expanded Access

Official Title:

Exome Sequencing of Fanconi Anemia Children and the Their Parents

Outcome Measures

Primary Outcome Measures

Eligibility Criteria

Criteria

Ages Eligible for Study:

1 Month to 18 Years

Sexes Eligible for Study:

All

Inclusion Criteria:

All the children that are diagnosed to be FA patients at the Blood Disease Hospital between 08/01/2010 - 07/31/2011, will be asked to participated in this study after acquiring the consent.