Survival Benefits of Statins in Breast Cancer Patients

Study Overview
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Brief Summary
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In this study, we compared the survival benefit of breast cancer patients with dyslipidemia (low and medium risk of ASCVD). The control group used dietary intervention instead of statins intervention. The main endpoint was 5 years DFS. The subjects were breast cancer patients.

Detailed Description
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A randomized, open, blank controlled, single-center clinical trial was conducted to compare the survival benefits of statins in breast cancer patients with dyslipidemia (low and medium risk of ASCVD). The control group used dietary intervention instead of statins. The main endpoint was 3 and 5 years DFS. The subjects were breast cancer patients. In this study, 348 patients were randomly divided into two groups according to patients' wishes and written informed consent. The experimental group: control group = 1:1. Subjects were screened and administered continuously until the disease progressed and the toxicity was intolerable. Informed consent was withdrawn or the researcher decided that the drug must be discontinued.

Official Title
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Survival Benefits of Statins in Breast Cancer Patients With Abnormal Lipid Metabolism

Conditions
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Breast Cancer Female

Intervention / Treatment
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* Drug: statins
* Behavioral: Dietary intervention group (control group)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Diagnosed as invasive breast cancer, it has been treated surgically, confirmed by histology, cytology or imaging. Female patients (35-75 years old); The low-risk patients with ASCVD are detailed in Annex 1. Signed written informed consent approved by IRB or IEC Exclusion Criteria: The subjects were pregnant or lactating. Pregnancy test positive (urine or serum) in women with potential pregnancy within 7 days before administration. Other invasive tumors (including the second primary breast cancer) may affect the evaluation of outcomes and the compliance of schemes, but subjects who have been cured and survived disease-free for at least five years can be selected. Patients with chronic underlying liver diseases who have abnormal liver function and/or clinical manifestations: Serum total bilirubin > 2.5 *ULN; or INR > 1.5 although there was no increase in bilirubin Serum ALT or AST > 3 *ULN; Alkaline phosphatase > 2.5 *ULN; Elevated ALT or AST may gradually recover, but with progressively increased fatigue, nausea and vomiting, fever, right upper abdominal pain or tenderness. Extremely high risk ASCVD patients Including acute coronary syndrome (ACS), stable coronary heart disease, revascularization, ischemic cardiomyopathy, ischemic stroke, transient ischemic attack, peripheral atherosclerosis, etc. High-risk ASCVD patients (in accordance with one of the following circumstances): LDL-C>4.9 mmol/L or TC>7.2 mmol/L Diabetic patients with 1.8 mmol/L < LDL-C < 4.9 mmol/L (or) 3.1 mmol/L < TC < 7.2 mmol/L and age < 40 years The 10-year risk of ASCVD was moderate and younger than 55 years old. The remaining life risk was assessed. Those with any of the following two or more risk factors are defined as high risk: Systolic or diastolic blood pressure (> 160 mmHg) or (> 100 mmHg) Non-HDL-C>5.2 mmol/L (200 mg/dl) HDL-C < 1.0 mmol/L (40 mg/dl) BMI>28 kg/m2 Smoking In the abnormal group of simple TG (triglyceride), TG (> 5.7 mmol/L) Other serious diseases, including: Congestive heart failure (NYHA grade II, III, IV); dyspnea at rest or requiring oxygen therapy; severe infection; uncontrolled diabetes mellitus; If there are serious mental or mental disorders, it is estimated that the subjects'compliance to participate in this study is not strong. Drug allergies to research drugs are known. Participated in other drug clinical trials in the past 30 days. Failure to complete at least one cycle of clinical trials based on this protocol, and failure to evaluate safety and effectiveness. Serious violation of this study program, not in accordance with the prescribed dose, method and course of treatment.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: A randomized, open, blank controlled, single-center clinical trial. The control group used dietary intervention instead of statins.
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Statin therapy (experimental group)<br>On the basis of guiding patients to control their diet and improve their lifestyle, etc. Simvastatin 20mg/d QN Po (dosage can be adjusted according to the blood lipid level of each reexamination) Atorvastatin 10mg/d QN Po (patients who cannot tolerate the side effects of simvastatin may consider replacing this drug) | Drug: statins<br>* On the basis of dietary intervention. Simvastatin 20mg/d QN Po (half an hour before bedtime) (dosage can be adjusted according to other indicators of blood lipid level in each review), atorvastatin 10mg/d QN Po (half an hour before bedtime) (patients who can not tolerate the side effects of simvastatin can consider replacing this drug).<br>* Other names: Atorvastatin Ale Beijing Jialin Pharmaceutical Co., Ltd. Alatorvastatin Calcium Tablets Specification and packing: 10mg*7 tablets Dose group: 10 mg once a day before bed;|
| Other: Dietary intervention group (control group)<br>Guiding patients to control diet, improve lifestyle, etc. | Behavioral: Dietary intervention group (control group)<br>* Restriction of dietary components that increase LDL-C Saturated Fatty Acids Less than 7% of total energy Dietary cholesterol < 300 mg/d Increasing Dietary Ingredients for Reducing LDL-C Phytosterol 2 3 g/d Water soluble dietary fiber 10 25 g/d total energy Adjusted to maintain ideal weight or lose weight Physical activity Maintain moderate intensity exercise and consume at least 200 kcal of calories per day<br>* Other names: Dietary and motor regulation;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| DFS | Disease free survival | 5 years | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| OS | Overall survival | 5 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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breast cancer, statins, abnormal lipid metabolism