Myxoid liposarcoma and the mammalian target of rapamycin pathway.

Abstract:

PURPOSE OF REVIEW:Myxoid/round cell liposarcoma (MRCL) represents about 10% of all soft-tissue sarcomas. Therapeutic options for this subgroup of tumours are limited, essentially doxorubicin-based regimens and trabectedin. Recently, the mammalian target of rapamycin (mTOR) pathway has been identified as a therapeutic target in several sarcomas. MRCLs should be included among these, as various molecular aberrations of the mTOR pathway have been recently reported. RECENT FINDINGS:PI3KCA mutations were identified in 10-20% of MRCLs. Other molecular aberrations include loss of PTEN, Akt activation and overexpression of IGF1R. Recently, two minor responses to mTOR inhibitors were reported. SUMMARY:The relatively high frequency of mTOR signalling pathway alterations in MRCL provides a preclinical rationale for considering mTOR inhibition as a potential novel therapeutic strategy warranting further investigation.

journal_name

Curr Opin Oncol

authors

Sanfilippo R,Dei Tos AP,Casali PG

doi

10.1097/CCO.0b013e32836227ac

subject

Has Abstract

pub_date

2013-07-01 00:00:00

pages

379-83

issue

4

eissn

1040-8746

issn

1531-703X

journal_volume

25

pub_type

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