An Epidemiologic Evaluation of Adverse Events of 5-Alpha-Reductase Inhibitors

5-α-还原酶抑制剂不良事件的流行病学评估

• 批准号: 8768599
• 负责人: Shona C Fang
• 金额: $ 27.54万
• 依托单位: NEW ENGLAND RESEARCH INSTITUTES, INC.
• 依托单位国家: 美国
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2016-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8768599
• 关键词: 5 Alpha-Reductase Inhibitor; Accounting; Address; Adrenergic alpha-Antagonists; Adverse effects; Adverse event; Aging; Area; Awareness; Behavioral; Benefits and Risks; Benign; Benign Prostatic Hypertrophy; Boston; Breast; Breast Diseases; Chemoprevention; Chibro-Proscar; Clinical; Clinical Treatment; Cohort Studies; Collaborations; Computerized Medical Record; Data Analyses; Data Set; Databases; Decreased Libido; Development; Disease; Dose; Drug Utilization; Drug user; Dutasteride; Epidemiologic Studies; Epidemiology; Erectile dysfunction; Evaluation; Event; Finasteride; Foundations; Functional disorder; General Practices; GlaxoSmithKline brand of dutasteride; Goals; Healthcare; Heterogeneity; Incidence; Label; Libido; Male Pattern Baldness; Malignant - descriptor; Malignant neoplasm of male breast; Malignant neoplasm of prostate; Medical; Medical Records; Medicine; Mental Depression; Methods; National Institute of Diabetes and Digestive and Kidney Diseases; Neurosecretory Systems; Orgasm; Outcome; Patients; Peyronie Disease; Pharmaceutical Preparations; Pharmacoepidemiology; Population; Prostate; Prostate Cancer Prevention Trial; Psychosexual Disorders; Public Health; Reporting; Research; Research Design; Resources; Risk; Risk Factors; Safety; Sex Functioning; Sexual Dysfunction; Stanolone; Surveillance Program; Survival Analysis; Symptoms; Syndrome; Testosterone; Time; Validation; active method; aged; arm; base; cancer chemoprevention; clinical practice; comparison group; cost; design; drug market; experience; follow-up; innovation; interest; longitudinal design; lower urinary tract symptoms; male; men; novel; public health relevance; young man

DESCRIPTION (provided by applicant): We propose a harmacoepidemiologic study of 5-alpha-reductase inhibitors (5ARIs) to address emerging safety concerns (permanent sexual side effects, depression) with use of these marketed drugs, presently being considered for expanded use in healthy men as agents of prostate cancer chemoprevention. In order to cost- efficiently deliver needed safety information, this research will examine the occurrence of adverse events (AEs) via analysis of a large electronic medical records database, the UK-based Clinical Practice Research Datalink (CPRD). The CPRD is the most widely-used resource for pharmacoepidemiologic research in the world. In preliminary analyses of this very large database (11M patients, 45M patient-years), we have identified over 58,000 users of the drug class in question with on average approximately 10 years of follow-up time. In addition to studying risk of events, the proposed study will be the first to study symptom persistence in relation to both types of drugs in the class (finasteride and dutasteride), and will be the largest epidemiologic study of its kind to date. We propose to examine the occurrence of 4 thematic groups of AEs: 1) erectile dysfunction (ED); 2) non- ED sexual dysfunction (ejaculatory and psychosexual dysfunction, low libido, Peyronie's disease); 3) breast outcomes (benign/malignant breast diseases), and 4) depression, using longitudinal epidemiologic approaches. In addition to a retrospective cohort study focused on incident events, we will examine the persistence/permanency of sexual dysfunction outcomes and depression following drug cessation, and risk factors for permanency. Our analyses are designed such that men under various drug treatments for benign prostatic hyperplasia (BPH) are compared (finasteride, dutasteride, and alpha-blockers) to account for the underlying influence of BPH on outcomes. We will examine potential confounding in our analysis using the wide variety of medical and behavioral factors available in CPRD, including use of novel methods such as high-dimensional propensity score analysis. Our research team is comprised of experts in the epidemiology of male aging, pharmacoepidemiology relating to sexual function and lower urinary tract symptoms, and clinical treatment of BPH. The PI has immediate access and >25 years of experience in pharmacoepidemiologic utilization of the CPRD. Other strengths of our proposed study include its large size, use of medical records (avoiding the need to rely on patient recall o prescriptions and avoidance of problems with use of medical claims), longitudinal design, the ability to compare 5ARIs to other treatments, and the richness of the underlying dataset for confounder control. The public health contribution of the study is to quickly to inform the safety profile of the 5ARI class for currently-approved indications before further expansion to healthy men for chemoprevention.

描述（由申请人提供）：我们建议进行5- α还原酶抑制剂（5ARIs）的药理学流行病学研究，以解决使用这些已上市药物时出现的安全问题（永久性性副作用，抑郁），目前正在考虑扩大在健康男性中作为前列腺癌化学预防剂的使用。为了经济有效地提供所需的安全信息，本研究将通过分析一个大型电子医疗记录数据库，即英国临床实践研究数据链（CPRD）来检查不良事件（ae）的发生情况。CPRD是世界上使用最广泛的药物流行病学研究资源。在对这个非常大的数据库（1100万患者，4500万患者年）的初步分析中，我们已经确定了超过58,000名有问题的药物类别使用者，平均随访时间约为10年。除了研究事件的风险外，拟议的研究将是第一个研究这类药物（非那雄胺和度他雄胺）中两种药物的症状持续性的研究，也是最大的研究