Polygenic Risk Scores in Child and Adolescent Psychiatry: Ethical, Clinical, and Legal Implications

点击翻译按钮获取中文摘要

PROJECT SUMMARY Recently, more than 500 genomic loci associated with various psychiatric disorders, including schizophrenia, depression, and autism spectrum disorders, have been identified. This makes it possible to generate polygenic risk scores (PRS) to stratify individuals by risk for different psychiatric disorders compared to the general population. As a prediction tool, psychiatric PRS would likely be most valuable when applied to individuals before the onset of illness. In about 75% of cases, the onset of psychiatric disorders or prodromal features occurs by early adulthood making psychiatric PRS likely most useful for children and adolescents. PRS have the potential to improve early identification, and lead to enhanced monitoring and interventions to potentially prevent or delay onset, and minimize morbidity and risk for suicide, the second leading cause of death in the U.S. in ages 10–24. Despite their promise, PRS could be especially perilous in the context of psychiatry, and our preliminary work has found that PRS are already being used in child and adolescent psychiatry. There is significant stigma around mental illness, and a history of misuse of “predictors” of “undesirable” behaviors or mental illness in the US. Thus, psychiatric PRS could be another tool used against patients with psychiatric disorders. Further, psychiatric PRS are arguably the first tool with the capacity to generate risk predictions about psychiatric disorders for any individual and there are key legal gaps in the protection of the privacy of this information and the prevention of genetic discrimination. To promote responsible use of psychiatric PRS in children and adolescents, we will use a mixed-methods approach that includes qualitative, quantitative, and legal analysis to: 1) give voice to stakeholders (i.e., patients, parents/caregivers, clinicians) by examining their perspectives regarding whether psychiatric PRS should be used and, if so, how; and 2) examine the legal and regulatory landscape to identify what safeguards may be necessary. Although some of these gaps also apply to other genetic information, we will focus on identifying potential policy solutions for the likely uses and misuses of psychiatric PRS against individuals with or at risk of psychiatric disorders, almost 30% of the US population. The long-term goal of this research is to develop ethically-justified and empirically-informed guidelines to address the ethical challenges raised by the use of psychiatric PRS with children and adolescents. Building on our NIH-funded Child and Adolescent Psychiatric Genetics Survey (CAPGS), which examined child and adolescent psychiatrists’ perspectives about PRS (3R00HG008689-05S1), the objective of the current proposal is to use a mixed-methods design to examine: 1) challenges in the clinical use of psychiatric PRS, 2) key stakeholders’ perspectives on psychiatric PRS, and 3) gaps in legal protections against privacy violations and discrimination based on psychiatric PRS.