Abstract
Jumping translocations (JTs) are unbalanced chromosomal translocations in which an identical chromosomal region is translocated to the telomeric region of different chromosomes. JTs are rare in hematological malignancies where they are second translocations and may be an indicator of poor prognosis. We report a case of acute myeloid leukemia with t(16;21) and a JT in which the long arm of chromosome 1 distal to q21 is translocated to the terminal region of chromosome 10. The leukemic cells exhibit high expression of EAT/mcl1, an anti-apoptotic Bcl-2 related gene. Since EAT/mcl1 is mapped to 1q21 near the breakpoint in the JTs, high level expression of EAT/mcl1 may be associated with the poor prognosis of leukemia with JTs.
Publication types
-
Case Reports
-
Research Support, Non-U.S. Gov't
MeSH terms
-
Adolescent
-
Amino Acid Sequence
-
Apoptosis / genetics*
-
Base Sequence
-
Chromosomes / genetics*
-
Chromosomes / ultrastructure
-
Chromosomes, Human, Pair 1 / genetics*
-
Chromosomes, Human, Pair 1 / ultrastructure
-
Chromosomes, Human, Pair 16 / genetics*
-
Chromosomes, Human, Pair 16 / ultrastructure
-
Chromosomes, Human, Pair 21 / genetics*
-
Chromosomes, Human, Pair 21 / ultrastructure
-
DNA, Neoplasm / genetics
-
Gene Expression Regulation, Leukemic*
-
Humans
-
Karyotyping
-
Leukemia, Myeloid, Acute / genetics*
-
Leukemia, Myeloid, Acute / pathology
-
Male
-
Molecular Sequence Data
-
Myeloid Cell Leukemia Sequence 1 Protein
-
Neoplasm Proteins / biosynthesis
-
Neoplasm Proteins / genetics*
-
Prognosis
-
Proto-Oncogene Proteins c-bcl-2*
-
Telomere / genetics
-
Telomere / ultrastructure
-
Translocation, Genetic*
Substances
-
DNA, Neoplasm
-
Myeloid Cell Leukemia Sequence 1 Protein
-
Neoplasm Proteins
-
Proto-Oncogene Proteins c-bcl-2