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Year : 2017  |  Volume : 54  |  Issue : 2  |  Page : 426-429

Microsatellite Instability in Chronic Myeloid Leukemia using D17S261 and D3S643 markers: A Pilot Study in Gujarat Population

1 Departments of Integrative Biology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
2 Departments of Biomedical Genetics, Vellore Institute of Technology, Vellore, Tamil Nadu, India

Correspondence Address:
Dr. T N Patel
Departments of Integrative Biology, Vellore Institute of Technology, Vellore, Tamil Nadu
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijc.IJC_275_17

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CONTEXT: Tumor progresses through a series of genetic alterations that involve proto-oncogenes and tumor suppressor genes – the gatekeeper, caretakers, and landscaper genes. Microsatellites are short tandem repeat sequences, present over the span of human genome and are known to be variable at multiple loci due to errors in DNA Mismatch Repair machinery. AIM: The present study was aimed to evaluate the association between Microsatellite Instability (MSI) and evolution of Chronic Myeloid Leukemia (CML) – genetically a rare event but profound in this pilot study. SETTINGS AND DESIGNS: We explore the possibility of MSI in primary CML patients confirmed by t(9;22) using capillary electrophoresis. Fifteen CML patients and healthy individual samples, respectively, were used to study the markers D17S261 and D3S643. MATERIALS AND METHODS: The DNA was amplified using tagged and nontagged primers and further subjected to bioanalysis and fragment analysis. RESULTS: While the results from bioanalyzer fluctuated, fragment analysis indicated the presence of microsatellite variability in 80% of the patients' samples as compared to no MSI in normal individuals for both the markers. CONCLUSION: These findings suggest that MSI is a genetic event that may have a role in CML progression or evolution. Further studies are warranted to understand the plausible underlying causes.


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