Research on the Environment and Children's Health: Retinoblastoma
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 78
- 试验地点
- 1
- 主要终点
- demographic and exposure information by telephone interview
研究概览
简要总结
The purpose of the research study is to learn more about the causes of retinoblastoma and to identify possible risk factors in the parents of patients with retinoblastoma. This kind of study is called an epidemiology study and is often done by interviewing people with and without the disease. In the case of a childhood disease, the researchers ask about experiences of the parents and children before the disease developed.
详细描述
The purpose of the study is to investigate the role of paternal exposures in the etiology of sporadic heritable retinoblastoma (RBL). The study has a matched case-control design with a sample size of 255 pairs. Cases will be children with sporadic heritable (RBL) identified from eight hospitals that together treat most of the RBL patients in the U.S. and Canada. We will use regional controls matched on year of birth and state/province of residence identified by randomdigit-dialing (RDD). Fathers and mothers of cases and controls will be interviewed by telephone about their occupational, medical, dietary, and personal exposures before the index child's conception. Blood samples will be obtained on cases and their parents for DNA isolation. The case's DNA will be used to characterize the disease-causing RB1 mutation. The parent's DNA will be used to detect the few instances in which a parent also has the RB1 mutation, i.e., the child's RBL is familial rather than sporadic.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Control
- 时间视角
- Prospective
入排标准
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Cases will be children with sporadic heritable RBL, i.e., bilateral RBL without a family history of the disorder.
- •Cases will be diagnosed with retinoblastoma in an approximately 7-year period, beginning January 1, 1998 and continuing until the sample size is reached.
- •The case family must reside in the continental U.S., Alaska, or Canada.
- •The case family must have a telephone in the household.
- •The patient's physician must give permission to contact the parents of the case.
- •The biologic father or mother of the case must be available and consent to be interviewed.
- •The father or mother must speak English or Spanish.
- •Genetic counseling regarding RB1 gene mutation analysis must be done prior to registration onto study.
排除标准
- •Cases that do not meet the above criteria will be ineligible to participate and excluded from the study.
结局指标
主要结局
demographic and exposure information by telephone interview
时间窗: 5 years 4 months
次要结局
未报告次要终点