Gene Expression Profiles in Predicting Chemotherapy Response in Breast Cancer

Summary

We hypothesize that changes in tumor gene expression profiles vary in response to different sequences and types of chemotherapy, and that gene expression changes will correlate with tumor response. We are also looking to correlate drug pharmacokinetics and treatment toxicity with genotype of drug metabolizing enzymes and tranporters.Patients with metastatic breast cancer and who have measurable primary breast tumor will be randomized to one of two alternating sequences of adriamycin and docetaxel. Serial tumor biopsies and plasma samples will be obtained for gene expression and proteomic studies to identify biomarkers that will predict for chemotherapy response.

Timeline

Start

2002-04

Primary completion

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Completion

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Publications

• Tan SH, Sapari NS, Miao H, Hartman M, Loh M, Chng WJ, Iau P, Buhari SA, Soong R, Lee SC. High-Throughput Mutation Profiling Changes before and 3 Weeks after Chemotherapy in Newly Diagnosed Breast Cancer Patients. PLoS One. 2015 Dec 2;10(12):e0142466. doi: 10.1371/journal.pone.0142466. eCollection 2015.
• Voon PJ, Yap HL, Ma CY, Lu F, Wong AL, Sapari NS, Soong R, Soh TI, Goh BC, Lee HS, Lee SC. Correlation of aldo-ketoreductase (AKR) 1C3 genetic variant with doxorubicin pharmacodynamics in Asian breast cancer patients. Br J Clin Pharmacol. 2013 Jun;75(6):1497-505. doi: 10.1111/bcp.12021.
• Chuah BY, Putti T, Salto-Tellez M, Charlton A, Iau P, Buhari SA, Wong CI, Tan SH, Wong AL, Chan CW, Goh BC, Lee SC. Serial changes in the expression of breast cancer-related proteins in response to neoadjuvant chemotherapy. Ann Oncol. 2011 Aug;22(8):1748-54. doi: 10.1093/annonc/mdq755. Epub 2011 Feb 25.
• Lim YW, Goh BC, Wang LZ, Tan SH, Chuah BYS, Lim SE, Iau P, Buhari SA, Chan CW, Sukri NB, Cordero MT, Soo R, Lee SC. Pharmacokinetics and pharmacodynamics of docetaxel with or without ketoconazole modulation in chemonaive breast cancer patients. Ann Oncol. 2010 Nov;21(11):2175-2182. doi: 10.1093/annonc/mdq230. Epub 2010 Apr 29.
• Lee SC, Xu X, Chng WJ, Watson M, Lim YW, Wong CI, Iau P, Sukri N, Lim SE, Yap HL, Buhari SA, Tan P, Guo J, Chuah B, McLeod HL, Goh BC. Post-treatment tumor gene expression signatures are more predictive of treatment outcomes than baseline signatures in breast cancer. Pharmacogenet Genomics. 2009 Nov;19(11):833-42. doi: 10.1097/FPC.0b013e328330a39f.
• Fan L, Goh BC, Wong CI, Sukri N, Lim SE, Tan SH, Guo JY, Lim R, Yap HL, Khoo YM, Iau P, Lee HS, Lee SC. Genotype of human carbonyl reductase CBR3 correlates with doxorubicin disposition and toxicity. Pharmacogenet Genomics. 2008 Jul;18(7):621-31. doi: 10.1097/FPC.0b013e328301a869.

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