Abstract: |
In myxoid/round cell liposarcoma, the t(12;16)(q13; p11) and its associated fusion transcript, FUS-CHOP, characterize greater than 95% of cases. The variant translocation t(12;22)(q13;q12) and associated EWS-CHOP fusion transcript are rare. A second non-random aberration observed in roughly 20% of Ewing's sarcomas, and to a lesser extent other select sarcomas, is the unbalanced 1;16 translocation. Recognition of this secondary aberration in the absence of an obvious primary karyotypic abnormality strongly suggests that the use of other genetic approaches will be informative in uncovering a clinically suspected primary anomaly. The following case illustrates the utility of molecular cytogenetic and reverse transcriptase-polymerase chain reaction techniques in diagnosing an ins(22;12)(q12;q13q14) and associated EWS-CHOP fusion transcript in a myxoid/round cell liposarcoma exhibiting a der(16)t(1;16)(q11;q11). |
Keywords: |
adult; human tissue; case report; molecular genetics; chromosome 12; reverse transcription polymerase chain reaction; genetic transcription; ewing sarcoma; sarcoma; hybrid protein; reverse transcriptase polymerase chain reaction; oncogene proteins, fusion; translocation, genetic; chromosomes, human, pair 1; karyotype; karyotyping; ccaat-enhancer-binding proteins; myxosarcoma; rna-binding protein ews; chromosome 22; chromosomes, human, pair 22; rna-binding protein fus; chromosomes, human, pair 16; structural chromosome aberration; chromosome variant; chromosome insertion; chromosomes, human, pair 12; liposarcoma, myxoid; transcription factor chop; humans; human; male; article; insertion sequences; chromosome translocation 12; chromosome translocation 1; chromosome translocation 16
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