Molecular profiling of advanced breast cancer tumors is beneficial in assisting clinical treatment plans
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Philip Carter1, Costi Alifrangis2, Biancastella Cereser1, Pramodh Chandrasinghe1,3, Lisa Del Bel Belluz1, Nina Moderau1, Fotini Poyia1, Lee S. Schwartzberg4, Neha Tabassum1, Jinrui Wen1, Jonathan Krell1 and Justin Stebbing1
1Department of Surgery and Cancer, Imperial College, London, UK
2Department of Oncology, University College Hospital, London, UK
3Department of Surgery, University of Kelaniya, Kelaniya, Sri Lanka
4West Cancer Center, The University of Tennessee, Memphis, USA
Philip Carter, email: [email protected]
Keywords: tumor profiling; breast cancer; cancer treatment
Received: July 29, 2017 Accepted: October 28, 2017 Epub: February 24, 2018 Published: April 03, 2018
We used data obtained by Caris Life Sciences, to evaluate the benefits of tailoring treatments for a breast carcinoma cohort by using tumor molecular profiles to inform decisions. Data for 92 breast cancer patients from the commercial Caris Molecular Intelligence database was retrospectively divided into two groups, so that the first always followed treatment recommendations, whereas in the second group all patients received at least one drug after profiling that was predicted to lack benefit. The biomarker and drug associations were based on tests including fluorescent in situ hybridization and DNA sequencing, although immunohistochemistry was the main test used.
Patients whose drugs matched those recommended according to their tumor profile had an average overall survival of 667 days, compared to 510 days for patients that did not (P=0.0316). In the matched treatment group, 26% of patients were deceased by the last time of monitoring, whereas this was 41% in the unmatched group (P=0.1257). We therefore confirm the ability of tumor molecular profiling to improve survival of breast cancer patients. Immunohistochemistry biomarkers for the androgen, estrogen and progesterone receptors were found to be prognostic for survival.
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