Optimizing long-term post-polypectomy surveillance for colorectal cancer prevention using a prediction rule developed from a large, community-based cohort

使用基于大型社区队列的预测规则优化长期息肉切除术后监测以预防结直肠癌

• 批准号: 9224101
• 负责人: Jeffrey Kuang Zou Lee
• 金额: $ 17.71万
• 依托单位: UNIVERSITY OF CALIFORNIA, SAN FRANCISCO
• 依托单位国家: 美国
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-14 至 2021-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/9224101
• 关键词: Address; Adenomatous Polyps; Adherence; Age; Award; California; Cancer Etiology; Cancerous; Cessation of life; Chemopreventive Agent; Clinical Investigator; Cohort Studies; Colonoscopy; Colorectal Cancer; Communities; Confounding Factors (Epidemiology); DNA; Data; Development; Development Plans; Electronic Health Record; Epidemiologic Methods; Excision; Frequencies; Funding; Future; Goals; Grant; Guidelines; Health Care Costs; Healthcare Systems; Incidence; Knowledge; Lead; Link; Literature; Medical Informatics; Mentors; Mentorship; Methods; Modeling; National Cancer Institute; Natural Language Processing; Outcome; Pathology; Patient risk; Patients; Phase; Physicians; Policies; Polypectomy; Polyps; Population; Prevention; Randomized Controlled Trials; Recommendation; Regimen; Reporting; Research; Research Personnel; Resources; Risk; Risk Factors; Scheme; Stratification; Surveillance Program; Testing; Time; Training; United States; United States National Institutes of Health; Work; Writing; adenoma; base; cancer risk; career; career development; cohort; colorectal cancer prevention; colorectal cancer screening; community based participatory research; cost; design; evidence base; follow-up; high risk; improved; mortality; multidisciplinary; population based; predictive modeling; screening; skills; surveillance strategy; tool

PROJECT SUMMARY AND ABSTRACT The purpose of this K07 proposal is to provide Jeffrey Lee, MD, MAS with the protected time and resources to pursue the additional training needed to reach his long-term goal of becoming an independent clinical investigator, focused on colorectal cancer (CRC) prevention. Screening has been shown to reduce the incidence and mortality for CRC. However, screening has resulted in a growing cohort of patients with adenomatous polyps (adenomas) and little is known about effectively managing their post-polypectomy surveillance. With limited data available in the literature to determine the appropriate timing and frequency of follow-up colonoscopy for patients after adenoma removal, recommendations for post-polypectomy surveillance from our national guidelines have been imprecise at best. For example, the currently recommended range of 5-10 years for a surveillance colonoscopy for patients with a single adenoma covers a two-fold difference in exam frequency, with resultant two-fold impact on patient risk, cost, and colonoscopy capacity. To help optimize the timing of colonoscopic surveillance and guide appropriate utilization of this invasive and costly resource, stratification of CRC risk after colonoscopic polypectomy from a large community-based cohort with long-term follow-up is needed. Building on his prior work in CRC screening, Dr. Lee seeks to fill this knowledge gap by optimizing surveillance practices in post-polypectomy patients according to patient-, polyp-, and colonoscopy exam-related factors. Specifically, he will determine the long- term CRC risk in patients after colonoscopic polypectomy in a very large “real world” community-based population (Aim 1). He will also identify patient-, polyp-, and exam-related risk factors associated with incident CRC in these patients (Aim 2). Finally, he will develop a CRC risk prediction model that will identify post- polypectomy patients at high and low risk for developing subsequent CRC (Aim 3). To achieve these goals, Dr. Lee and his mentors have designed a career development plan for research and educational training to obtain: 1) knowledge and expertise in advanced epidemiologic methods for design and analysis of cohort studies; 2) knowledge in medical informatics methods; and 3) predictive modeling skills. To achieve the proposed research aims, Dr. Lee will leverage the rich electronic health records of Kaiser Permanente Northern California, a large community-based healthcare system, in which data on patient, physician, colonoscopy, pathology, and CRC status have been collected since 1994. In addition, Dr. Lee will use an established natural language processing tool to efficiently collect data and evaluate potential confounding variables from more than 600,000 colonoscopy reports in order to address one of the main practical challenges that have limited the feasibility of large-scale population-based studies. Thus, completion of these aims has the potential to improve prevention and early detection of CRC, impact current surveillance guidelines for post-polypectomy patients, and reduce overuse and underuse of surveillance colonoscopy. Importantly, this proposal is realistic and feasible within the award period and will allow Dr. Lee to continue to build research skills, generate preliminary data, create additional collaborative relationships, and compete for R01 funding. In summary, this K07 award will support and accelerate the career development activities of Dr. Lee and allow him to successfully launch into the next phase of his career as an independent investigator.

项目总结与摘要