Application of Chromosome Microdissection Probes for Elucidation of BCR-ABL Fusion and Variant Philadelphia Chromosome Translocations
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چکیده
Fluorescence in situ hybridization (FISH) has become an increasingly important method for assessing chromosome rearrangement. The reciprocal translocation constituting the Philadelphia (Ph) chromosome [t(9;22)(q34;q 1 1 )]characterizes more than 90% of patients with chronic myelogenous leukemia (CML). However, in the remaining cases the Ph chromosome (genetically characterized by the fusion of the BCR-ABf genes) is thought to arise through complex translocations that are often not readily apparent using routine chromosome-banding analysis. For this reason we
منابع مشابه
Application of chromosome microdissection probes for elucidation of BCR-ABL fusion and variant Philadelphia chromosome translocations in chronic myelogenous leukemia.
Fluorescence in situ hybridization (FISH) has become an increasingly important method for assessing chromosome rearrangement. The reciprocal translocation constituting the Philadelphia (Ph) chromosome [t(9;22)(q34;q11)] characterizes more than 90% of patients with chronic myelogenous leukemia (CML). However, in the remaining cases the Ph chromosome (genetically characterized by the fusion of th...
متن کاملFrequency of BCR-ABL Fusion Transcripts in Iranian Azeri Turkish patients with Chronic Myeloid Leukemia
Background: The Philadelphia chromosome (Ph) characterized by t (9; 22) (q34; q11.2) is a reciprocal translocation giving rise to a chimeric BCR-ABL fusion gene. Incidence of Ph chromosome is over 98% in Patients with Chronic Myeloid Leukemia (CML) and around 20% in acute lymphoblastic leukemia (ALL). The finding of this fusion gene is essential for diagnosis of CML by detection of various fusi...
متن کاملDetection of abl/bcr Fusion Gene in Patients Affected by Chronic Myeloid Leukaemia by Dual-Colour Interphase Fluorescence in situ Hybridisation
Conventional cytogenetic is the standard technique for detection of Philadelphia (Ph) chromosome in chronic myeloid leukemia (CML). Evaluation of abelson murine leukemia/breakpoint cluster region (abl/bcr) fusion using dual-colour fluorescence in situ hybridization (D-FISH) is an alternative approach allowing rapid and reliable detection of the disease. We employed the technique of interphase D...
متن کاملComplex chromosome rearrangements may locate the bcr/abl fusion gene sites other than 22q11.
BACKGROUND AND OBJECTIVE From 5-8% of Philadelphia (Ph) positive patients with chronic myeloid leukemia (CML) show variant translocations in which at least a third chromosome in addition to 9q34 and 22q11 is involved. The formation mechanisms and clinical significance of variant Ph translocations are still unclear. The BCR/ABL chimeric gene encoding for chimeric proteins is always present and m...
متن کاملBCR-ABL fusion genes and laboratory findings in patients with chronic myeloid leukemia in northeast Iran
Background: A specific chromosomal abnormality, the Philadelphia chromosome (BCR-ABL fusion), is present in all patients with chronic myeloid leukemia (CML). The b2a2 and b3a2 fusion mRNAs encode p210 fusion protein p210 and e1a2 encode p190. The aim of this study was to evaluate the frequency of BCR-ABL fusion transcript variants in Northeast of Iranian CML patients and to compare the laborato...
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تاریخ انتشار 2003