Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA.
Invitae Corporation, San Francisco, CA 94103, USA; Volunteer Clinical Faculty, University of California, San Francisco, San Francisco, CA 94143, USA.
Am J Hum Genet. 2020 Jul 2;107(1):3-14. doi: 10.1016/j.ajhg.2020.05.002.
Secondary genomic findings are increasingly being returned to individuals as opportunistic screening results. A secondary finding offers the chance to identify and mitigate disease that may otherwise be unrecognized in an individual. As a form of screening, secondary findings must be considered differently from sequencing results in a diagnostic setting. For these reasons, clinicians should employ an evaluation and long-term management strategy that accounts for both the increased disease risk associated with a secondary finding and the lower positive predictive value of a screening result compared to an indication-based testing result. Here we describe an approach to the clinical evaluation and management of an individual who presents with a secondary finding. This approach enumerates five domains of evaluation-(1) medical history, (2) physical exam, (3) family history, (4) diagnostic phenotypic testing, and (5) variant correlation-through which a clinician can distinguish a molecular finding from a clinicomolecular diagnosis of genomic disease. With this framework, both geneticists and non-geneticist clinicians can optimize their ability to detect and mitigate genomic disease while avoiding the pitfalls of overdiagnosis. Our goal with this approach is to help clinicians translate secondary findings into meaningful recognition, treatment, and prevention of disease.
次级基因检测结果越来越多地作为偶然筛查结果返回给个体。次级检测结果提供了识别和减轻疾病的机会,否则这些疾病可能在个体中无法被识别。作为一种筛查形式,次级检测结果必须与诊断环境中的测序结果区别对待。出于这些原因,临床医生应该采用一种评估和长期管理策略,既要考虑与次级检测结果相关的疾病风险增加,又要考虑与基于指征的检测结果相比,筛查结果的阳性预测值较低。在这里,我们描述了一种针对个体次级检测结果的临床评估和管理方法。该方法列举了五个评估领域-(1) 病史,(2) 体检,(3) 家族史,(4) 诊断表型测试,以及(5) 变异相关性-通过这些领域,临床医生可以将分子检测结果与基因疾病的临床分子诊断区分开来。有了这个框架,遗传学家和非遗传学家的临床医生都可以优化他们发现和减轻基因疾病的能力,同时避免过度诊断的陷阱。我们的目标是通过这种方法帮助临床医生将次级检测结果转化为对疾病的有意义的识别、治疗和预防。