目的:关于长期使用他汀类药物的潜在癌症风险存在争议。这项研究旨在使用真实世界的数据来调查癌症发病率与持续使用他汀类药物10年之间的关系。
方法:使用全港公共电子病历,我们在2009年1月至2011年12月的每个日历月内对符合他汀类药物启动适应症的患者进行了一系列嵌套目标试验.他汀类药物引发剂和非引发剂以1:1的比例匹配,以模拟基线时符合条件的个人试验的随机化。在意向治疗(ITT)分析中,应用汇总逻辑回归来获得他汀类药物起始癌症发生率的风险比(HRs)。通过调整基线混杂因素和逆概率加权,在符合方案分析中考虑基线后混杂因素。
结果:在8,560,051项合格的个人试验中,119,715个非引发剂与119,715个引发剂匹配用于分析。在10年的研究期间,总体癌症发病率的估计HR为0.96(0.87,1.05),标准化的10年风险差异为-0.4%(-1.6%,0.7%)在符合方案分析中。对于感兴趣的癌症亚型(即,乳腺癌,结直肠癌,血液癌,胰腺癌,前列腺癌,尿路上皮癌和肺癌),在符合方案分析中,10年风险差异为-0.3%~0.2%.在所有患者亚组中没有发现可观察到的癌症风险变化,年龄(<70/≥70岁),Charlson合并症指数(≤4/>4),和他汀类药物适应症。
结论:在10年的随访期内,他汀类药物的使用对癌症发病率没有影响。包括所有感兴趣的癌症亚型和性别方面的患者亚组,年龄,合并症,和他汀类药物适应症。
OBJECTIVE: Controversy exists regarding potential cancer risks associated with long-term statin use. This
study aimed to use real-world data to investigate the association between cancer incidence and sustained statin use over a 10-year period.
METHODS: Using territory-wide public electronic medical records in Hong Kong, we emulated a sequence of nested target trials on patients who met indications for statin initiation in each calendar month from January 2009 to December 2011. Statin initiators and noninitiators were matched in a 1:1 ratio to mimic the randomization of eligible person-trials at baseline. Pooled logistic regression was applied to obtain the hazard ratios for the cancer incidence of statin initiation in intention-to-treat analysis, with the adjustment of baseline confounders and the inverse probability weighting accounting for the postbaseline confounders in per-protocol analysis.
RESULTS: Among 8,560,051 eligible person-trials, 119,715 noninitiators were matched to 119,715 initiators for analysis. Over the 10-year
study period, the estimated hazard ratio of overall cancer incidence was 0.96 (0.87, 1.05), and the standardized 10-year risk difference was -0.4% (-1.3%, 0.4%) in the per-protocol analysis. For the cancer subtypes of interest (ie, breast cancer, colorectal cancer, hematological cancer, pancreatic cancer, prostate cancer, urothelial carcinoma, and lung cancer), the 10-year risk differences ranged from -0.3% to 0.2% in the per-protocol analysis. No observable risk change for cancer was found in all patient subgroups with regards to their sex, age (<70/≥70 years), Charlson Comorbidity Index (≤4/>4), and statin indication.
CONCLUSIONS: Statin use has no impact on cancer incidence over a 10-year follow-up period, including all cancer subtypes of interest and patient subgroups with regards to sex, age, comorbidities, and statin indications.