New Genetic Variation in BCR gene of Major B3a2 Breakpoint BCR-ABL Fusion Gene in Patients with Chronic Myelogenous Leukemia in Yogyakarta Indonesia

摘要

Background:Polymorphic bases in several exons of the BCR gene have been found in several studies of the BCR-ABL fusion gene. Most of the polymorphisms do not have any implications for the primary structure of the BCR-ABL protein. Nucleotide changes are often located in the area close to the fusion region, and therefore may influence primer annealing. Our previous work failed to amplify 15 of 200 samples from BCR-ABL positive chronic myelogenous leukemia (CML) patients using multiplex PCR, the standard method to detect BCR-ABL transcripts used in our institution. The failure was considered due to problems in primer annealing caused by sequence variations. Sequence analysis of BCR-ABL fusion gene breakpoint types in CML patients has never been hitherto performed in Indonesia. Therefore, the aim of this study was to perform sequence analysis of several samples that did not show amplification using the standard method.