MicroRNA (miRNA) is a type of endogenous non-coding RNA. They are responsible for post-transcriptional regulation and participate in many vital biological processes. Expression profiling has shown that miRNAs can distinguish between normal breast and tumor tissues. In recent years, circulating miRNAs have become promising biomarkers based on their stability and their non-invasive testing and feasibility in clinical practices.
Current reports showed that serum microRNA expression could be used as an early marker for determining the breast cancer risk. The concentrations of some circulating microRNAs in human breast cancer have been correlated with tumor development and progression. Aberrant miRNA expression may be involved in drug resistance to various chemotherapeutic agents in breast cancer. Therefore, we hope to investigate the value of miRNAs in predicting the effect in breast cancer neoadjuvant treatment.
Study Type
OBSERVATIONAL
Enrollment
100
The level of microRNA in plasma will be detected by TaqMan in screening phase and by quantitative Real-time PCR (qRT-PCR) in validation phase.
Peking University First Hospital
Beijing, Beijing Municipality, China
RECRUITINGObjective Response
Clinical disease response was evaluated for every two cycles of chemotherapy till surgery with RECIST criteria (RECIST 1.1). Resistant group was defined ad progression disease (PD) and/or stable disease (SD).Evaluation in breast lesions by MRI or mammography. The same imaging methods were used throughout treatment for a given patient. Blood samples for microRNA were collected before neoadjuvant chemotherapy, evaluation of clinical disease response and surgery. Clinical disease response was evaluated for every two cycles of chemotherapy till surgery with RECIST criteria (RECIST 1.1). Evaluation in breast lesions by MRI or mammography. The same imaging methods were used throughout treatment for a given patient.
Time frame: Every 2 cycles, up to surgery (each cycle is 21 days)
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.