Research Papers:

Cyclin alterations in diverse cancers: Outcome and co-amplification network

Maria Schwaederle _, Gregory A. Daniels, David E. Piccioni, Paul T. Fanta, Richard B. Schwab, Kelly A. Shimabukuro, Barbara A. Parker and Razelle Kurzrock

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Oncotarget. 2015; 6:3033-3042. https://doi.org/10.18632/oncotarget.2848

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Maria Schwaederlé1, Gregory A. Daniels1, David E. Piccioni1, Paul T. Fanta1, Richard B. Schwab1, Kelly A. Shimabukuro1, Barbara A. Parker1, Razelle Kurzrock1

1Center for Personalized Cancer Therapy, and Division of Hematology and Oncology, UCSD Moores Cancer Center, La Jolla, USA

Correspondence to:

Maria Schwaederlé, e-mail: [email protected]

Keywords: cyclin, next generation sequencing, molecular profile, amplification, Cancer

Received: October 03, 2014     Accepted: December 05, 2014     Published: December 18, 2014


Cyclin genes are key regulatory components of the cell cycle. With the development of new agents, cyclin-related genes are becoming increasingly important as they can be targeted. Yet, the biological implications of these alterations have not been fully studied. Clinical characteristics and outcome parameters were compared for patients harboring cyclin alterations versus not. CCN alterations were found in 13% of our population (50/392; all amplifications) and were associated with breast cancer (P < 0.0001), a higher median number of concomitant molecular alterations (P < 0.0001), and liver metastases (P = 0.046). Harboring a cyclin amplification was not associated with overall survival, the time to metastasis/recurrence, nor with the best progression-free survival. In a Cox regression model, gastrointestinal histology (P < 0.0001), PTEN (P < 0.0001), and CDK alterations (P = 0.041) had a significant association with poorer overall survival. CCN amplifications significantly correlated with alterations in FGF/FGFR family genes as well as in MET and ARFRP1. An extended correlation study shed light on a network of co-amplifications influenced in part by genes that were localized on the same amplicons. CCN amplifications are common across cancers and had distinctive biological associations. Customized combinations targeting the cyclin pathway as well as the extended co- amplification network may be necessary in order to address resistance mechanisms.

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