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Phase II Trial of the CDK4 Inhibitor PD0332991 in Patients With Advanced CDK4-Amplified Well-Differentiated or Dedifferentiated Liposarcoma

TLDR
Treatment with theCDK4 inhibitor PD0332991 was associated with a favorable progression-free rate in patients with CDK4-amplified and RB-expressing WDLS/DDLS who had progressive disease despite systemic therapy.
Abstract
Purpose CDK4 is amplified in 90% of well-differentiated (WDLS) and dedifferentiated liposarcomas (DDLS). The selective cyclin-dependent kinase 4 (CDK4)/CDK6 inhibitor PD0332991 inhibits growth and induces senescence in cell lines and xenografts. In a phase I trial of PD0332991, several patients with WDLS or DDLS experienced prolonged stable disease. We performed an open-label phase II study to determine the safety and efficacy of PD0332991 in patients with advanced WDLS/DDLS.

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Journal ArticleDOI

MDM2 copy numbers in well-differentiated and dedifferentiated liposarcoma: characterizing progression to high-grade tumors.

TL;DR: Differences in MDM2 amplification profiles among liposarcomas could help further define and predict progression to high-grade neoplasia.
Journal ArticleDOI

Analysis of the intratumoral adaptive immune response in well differentiated and dedifferentiated retroperitoneal liposarcoma.

TL;DR: The data suggest that an adaptive immune response is present in WD/DD retroperitoneal liposarcoma but may be hindered by TLS, among other possible microenvironmental factors; further investigation is needed.
Journal ArticleDOI

Current Molecular Targeted Therapies for Bone and Soft Tissue Sarcomas.

TL;DR: This review explains and summarizes the current molecular targeting therapies approved and in development for bone and soft tissue sarcomas and shows how these cancers have changed in the 2010s.
Journal ArticleDOI

High-dose continuous-infusion ifosfamide in advanced well-differentiated/dedifferentiated liposarcoma

TL;DR: These data suggest that ciHDIFX is active in WD/DDLPS, even in patients already treated with a combination of anthracyclines plus ifosfamide, and cihdIFX regimen was better tolerated than HDIFX in published studies.
References
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Book

Statistical methods for rates and proportions

TL;DR: In this paper, the basic theory of Maximum Likelihood Estimation (MLE) is used to detect a difference between two different proportions of a given proportion in a single proportion.
Journal ArticleDOI

Statistical Methods for Rates and Proportions.

B. S. Everitt, +1 more
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Journal Article

[New response evaluation criteria in solid tumours-revised RECIST guideline (version 1.1)].

TL;DR: This paper is an overview of the new response evaluation criteria in solid tumours: revised RECIST guideline (version 1. 1), with a focus on updated contents.
Journal Article

Specific inhibition of cyclin-dependent kinase 4/6 by PD 0332991 and associated antitumor activity in human tumor xenografts

TL;DR: Results indicate that inhibition of Cdk4/6 alone is sufficient to cause tumor regression and a net reduction in tumor burden in some tumors.
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