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Pancreatic Neoplasms: HELP
Articles by Rhys Stark
Based on 1 article published since 2010
(Why 1 article?)

Between 2010 and 2020, Rhys Stark wrote the following article about Pancreatic Neoplasms.
+ Citations + Abstracts
1 Article Tailored first-line and second-line CDK4-targeting treatment combinations in mouse models of pancreatic cancer. 2018

Chou, Angela / Froio, Danielle / Nagrial, Adnan M / Parkin, Ashleigh / Murphy, Kendelle J / Chin, Venessa T / Wohl, Dalia / Steinmann, Angela / Stark, Rhys / Drury, Alison / Walters, Stacey N / Vennin, Claire / Burgess, Andrew / Pinese, Mark / Chantrill, Lorraine A / Cowley, Mark J / Molloy, Timothy J / Anonymous170925 / Waddell, Nicola / Johns, Amber / Grimmond, Sean M / Chang, David K / Biankin, Andrew V / Sansom, Owen J / Morton, Jennifer P / Grey, Shane T / Cox, Thomas R / Turchini, John / Samra, Jaswinder / Clarke, Stephen J / Timpson, Paul / Gill, Anthony J / Pajic, Marina. ·The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, New South Wales, Australia. · Faculty of Medicine, St Vincent's Clinical School, University of NSW, Sydney, New South Wales, Australia. · Department of Anatomical Pathology, SYDPATH, Darlinghurst, Australia. · Crown Princess Mary Cancer Centre, Westmead Hospital, Sydney, New South Wales, Australia. · St. Vincent's Hospital, Darlinghurst, Australia. · St Vincent's Centre for Applied Medical Research, Darlinghurst, New South Wales, Australia. · Department of Genetics and Computational Biology, QIMR Berghofer Medical Research Institute, Queensland, Australia. · University of Melbourne, Melbourne, Victoria, Australia. · Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK. · West of Scotland Pancreatic Unit, Glasgow Royal Infirmary, Glasgow, UK. · Department of Surgery, Cancer Research UK, Beatson Institute, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK. · Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia. · Department of Anatomical Pathology, Royal North Shore Hospital, Sydney, New South Wales, Australia. · Cancer Diagnosis and Pathology Research Group, Kolling Institute of Medical Research, New South Wales, Australia. · Department of Surgery, Royal North Shore Hospital, Sydney, New South Wales, Australia. ·Gut · Pubmed #29080858.

ABSTRACT: OBJECTIVE: Extensive molecular heterogeneity of pancreatic ductal adenocarcinoma (PDA), few effective therapies and high mortality make this disease a prime model for advancing development of tailored therapies. The p16-cyclin D-cyclin-dependent kinase 4/6-retinoblastoma (RB) protein (CDK4) pathway, regulator of cell proliferation, is deregulated in PDA. Our aim was to develop a novel personalised treatment strategy for PDA based on targeting CDK4. DESIGN: Sensitivity to potent CDK4/6 inhibitor PD-0332991 (palbociclib) was correlated to protein and genomic data in 19 primary patient-derived PDA lines to identify biomarkers of response. In vivo efficacy of PD-0332991 and combination therapies was determined in subcutaneous, intrasplenic and orthotopic tumour models derived from genome-sequenced patient specimens and genetically engineered model. Mechanistically, monotherapy and combination therapy were investigated in the context of tumour cell and extracellular matrix (ECM) signalling. Prognostic relevance of companion biomarker, RB protein, was evaluated and validated in independent PDA patient cohorts (>500 specimens). RESULTS: Subtype-specific in vivo efficacy of PD-0332991-based therapy was for the first time observed at multiple stages of PDA progression: primary tumour growth, recurrence (second-line therapy) and metastatic setting and may potentially be guided by a simple biomarker (RB protein). PD-0332991 significantly disrupted surrounding ECM organisation, leading to increased quiescence, apoptosis, improved chemosensitivity, decreased invasion, metastatic spread and PDA progression in vivo. RB protein is prevalent in primary operable and metastatic PDA and may present a promising predictive biomarker to guide this therapeutic approach. CONCLUSION: This study demonstrates the promise of CDK4 inhibition in PDA over standard therapy when applied in a molecular subtype-specific context.