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Tumor calcification: a new response pattern of myxoid liposarcoma to trabectedin.


ABSTRACT: INTRODUCTION:Myxoid/round-cell liposarcoma (MRCL) is a specific histological subtype that accounts for 30-35% of liposarcomas and whose virulence depends on the quantity of round-cells within the tumor. MRCL is associated with specific chromosomal translocations resulting in the formation of CHOP/FUS and CHOP/EWS fusion proteins. A high sensitivity of MRCL to trabectedin was reported. CASE REPORT:We report the case of a 63-year-old woman with a bulky and metastatic MRCL, treated with trabectedin 1.5 mg/m(2) as a first-line treatment. She experienced a long-lasting clinical benefit. The patients received 14 cycles of trabectedin and achieved a durable partial response to the metastases and a stable disease of the primary tumor, which is a very favorable safety profile. Also noteworthy is that we have observed a calcification of the primary tumor and the metastasis. The response, which lasted 30 months, led to a symptomatic improvement, associated with an excellent general condition and an absence of pain. CONCLUSION:To the best of our knowledge, this is the first report of a MRCL treated with trabectedin that resulted in a calcification of the primary tumor and the metastases, associated with an outstandingly long response. This case suggests that trabectedin may represent a feasible first-line therapeutic option for patients with MRCL, with meaningful clinical benefits and an acceptable safety profile.

SUBMITTER: Turpin A 

PROVIDER: S-EPMC3999575 | biostudies-literature | 2014 Jan

REPOSITORIES: biostudies-literature

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Tumor calcification: a new response pattern of myxoid liposarcoma to trabectedin.

Turpin Anthony A   Taieb Sophie S   Penel Nicolas N  

Case reports in oncology 20140101 1


<h4>Introduction</h4>Myxoid/round-cell liposarcoma (MRCL) is a specific histological subtype that accounts for 30-35% of liposarcomas and whose virulence depends on the quantity of round-cells within the tumor. MRCL is associated with specific chromosomal translocations resulting in the formation of CHOP/FUS and CHOP/EWS fusion proteins. A high sensitivity of MRCL to trabectedin was reported.<h4>Case report</h4>We report the case of a 63-year-old woman with a bulky and metastatic MRCL, treated w  ...[more]

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