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[Analysis of isodicentric Ph chromosomes in chronic myeloid leukemia blast crisis]. 2017

Qian Li, and Xiaoji Lin, and Ying Lin, and Rongxin Yao, and Wu Huang, and Handong Mei, and Jian Gong, and Hui Chen, and Ningyan Teng
Hematological Laboratory, Department of Laboratory Medicine, The Second Affiliated Hospital of Wenzhou Medical College, Wenzhou, Zhejiang 325006, China. wzchenhui@126.com.

OBJECTIVE To explore the genetic and clinical characteristics of isodicentric Ph chromosomes [idic(Ph)] in lymphoid blast crisis of chronic myeloid leukemia (CML-BLC). METHODS Bone marrow aspirates of 2 patients with CML-BLC were analyzed by R banding after 24 hours of culturing. Genomic copy number variations (CNV) were analyzed by single nucleotide polymorphism array (SNP array) in case 1. The results were confirmed with fluorescence in situ hybridization (FISH). Variations of acute lymphoblastic leukemia-related genes including CDKN2A/AB and PAX5 were detected by multiplex ligation-dependent probe amplication (MLPA). RESULTS Deletions and duplications on derivative chromosome 9 detected by FISH were confirmed by SNP array analysis. The distances between the BCR/ABL fusion signals on the idic(Ph) chromosomes in the two patients have differed greatly. The idic(Ph) in the second patient was supposed to be formed by two Ph chromosomes joined at their q terminals, where as the idic(Ph) in the first patient have been shown to be fused at the satellite regions of their p arms. CONCLUSIONS The idic(Ph) chromosomes presented in CML-BLC may predict resistance to Imatinib and response to Dasatinib.

UI MeSH Term Description Entries
D007621 Karyotyping Mapping of the KARYOTYPE of a cell. Karyotype Analysis Methods,Analysis Method, Karyotype,Analysis Methods, Karyotype,Karyotype Analysis Method,Karyotypings,Method, Karyotype Analysis,Methods, Karyotype Analysis
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D010677 Philadelphia Chromosome An aberrant form of human CHROMOSOME 22 characterized by translocation of the distal end of chromosome 9 from 9q34, to the long arm of chromosome 22 at 22q11. It is present in the bone marrow cells of 80 to 90 per cent of patients with chronic myelocytic leukemia (LEUKEMIA, MYELOGENOUS, CHRONIC, BCR-ABL POSITIVE). Ph1 Chromosome,Ph 1 Chromosome,1 Chromosomes, Ph,Chromosome, Ph 1,Chromosome, Ph1,Chromosome, Philadelphia,Chromosomes, Ph 1,Chromosomes, Ph1,Ph 1 Chromosomes,Ph1 Chromosomes
D001752 Blast Crisis An advanced phase of chronic myelogenous leukemia, characterized by a rapid increase in the proportion of immature white blood cells (blasts) in the blood and bone marrow to greater than 30%. Blast Phase,Blast Crises,Blast Phases,Crises, Blast,Crisis, Blast,Phase, Blast,Phases, Blast
D002869 Chromosome Aberrations Abnormal number or structure of chromosomes. Chromosome aberrations may result in CHROMOSOME DISORDERS. Autosome Abnormalities,Cytogenetic Aberrations,Abnormalities, Autosome,Abnormalities, Chromosomal,Abnormalities, Chromosome,Chromosomal Aberrations,Chromosome Abnormalities,Cytogenetic Abnormalities,Aberration, Chromosomal,Aberration, Chromosome,Aberration, Cytogenetic,Aberrations, Chromosomal,Aberrations, Chromosome,Aberrations, Cytogenetic,Abnormalities, Cytogenetic,Abnormality, Autosome,Abnormality, Chromosomal,Abnormality, Chromosome,Abnormality, Cytogenetic,Autosome Abnormality,Chromosomal Aberration,Chromosomal Abnormalities,Chromosomal Abnormality,Chromosome Aberration,Chromosome Abnormality,Cytogenetic Aberration,Cytogenetic Abnormality
D002871 Chromosome Banding Staining of bands, or chromosome segments, allowing the precise identification of individual chromosomes or parts of chromosomes. Applications include the determination of chromosome rearrangements in malformation syndromes and cancer, the chemistry of chromosome segments, chromosome changes during evolution, and, in conjunction with cell hybridization studies, chromosome mapping. Banding, Chromosome,Bandings, Chromosome,Chromosome Bandings
D002872 Chromosome Deletion Actual loss of portion of a chromosome. Monosomy, Partial,Partial Monosomy,Deletion, Chromosome,Deletions, Chromosome,Monosomies, Partial,Partial Monosomies
D002899 Chromosomes, Human, Pair 9 A specific pair of GROUP C CHROMSOMES of the human chromosome classification. Chromosome 9
D005260 Female Females

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