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STAT1 and Cisplatin/Cetuximab in HNSCC
Cisplatin is a cytotoxic chemotherapeutic drug frequently used to treat many solid tumors, including head and neck squamous cell carcinoma (HNSCC). EGF receptor (EGFR) inhibitors have also shown efficacy as alternatives to cisplatin in some situations. However, large clinical trials have shown no added survival benefit from the use of these two drugs in combination. Possible explanations for this include overlapping downstream signaling cascades. Using in vitro studies, we tested the hypothesis that cisplatin and EGFR inhibitors rely on the activation of the tumor suppressor STAT1, characterized by its phosphorylation at s...
Source: Molecular Cancer Therapeutics - September 2, 2015 Category: Cancer & Oncology Authors: Schmitt, N. C., Trivedi, S., Ferris, R. L. Tags: Cancer Biology and Signal Transduction Source Type: research

The FA/BRCA Pathway Identified as the Major Predictor of Cisplatin Response in Head and Neck Cancer by Functional Genomics
Patients with advanced stage head and neck squamous cell carcinoma (HNSCC) are often treated with cisplatin-containing chemoradiation protocols. Although cisplatin is an effective radiation sensitizer, it causes severe toxicity and not all patients benefit from the combination treatment. HNSCCs expectedly not responding to cisplatin may better be treated with surgery and postoperative radiation or cetuximab and radiation, but biomarkers to personalize chemoradiotherapy are not available. We performed an unbiased genome-wide functional genetic screen in vitro to identify genes that influence the response to cisplatin in HNS...
Source: Molecular Cancer Therapeutics - March 1, 2017 Category: Cancer & Oncology Authors: Martens-de Kemp, S. R., Brink, A., van der Meulen, I. H., de Menezes, R. X., te Beest, D. E., Leemans, C. R., van Beusechem, V. W., Braakhuis, B. J. M., Brakenhoff, R. H. Tags: Companion Diagnostics and Cancer Biomarkers Source Type: research