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Localization of the gene for MEN 2A
J B Lichter1, M Difilippantonio, J Wu
1Department of Genetics, Yale University, New Haven, CT.
Henry Ford Hospital Medical Journal
|January 1, 1992
Summary
Researchers are pinpointing the gene responsible for multiple endocrine neoplasia type 2A (MEN 2A) syndrome. Advanced genetic mapping techniques are narrowing down the location on chromosome 10 for this rare genetic disorder.
Area of Science:
- Genetics
- Molecular Biology
- Medical Research
Background:
- Multiple Endocrine Neoplasia type 2A (MEN 2A) is a rare genetic disorder.
- Identifying the causative gene is crucial for diagnosis and treatment.
- Previous linkage studies localized the MEN 2A gene to chromosome 10.
Purpose of the Study:
- To refine the genetic mapping of the MEN 2A gene.
- To estimate the physical size of the critical region on chromosome 10.
- To initiate cloning efforts for the MEN 2A gene.
Main Methods:
- Utilizing fluorescence in situ hybridization (FISH) to estimate the MEN 2A region size.
- Employing meiotic recombination and radiation hybrid mapping panels.
- Initiating yeast artificial chromosome (YAC) cloning of the target region.
Main Results:
- The MEN 2A critical region on chromosome 10 was estimated to be between 2-10 Mb.
- Consistent marker order was established within this small genomic region.
- Initial steps towards cloning the MEN 2A gene using YACs were undertaken.
Conclusions:
- The genetic mapping of the MEN 2A gene is nearing completion.
- Advanced molecular techniques are being applied to isolate the gene.
- These findings pave the way for identifying the specific MEN 2A gene.