Outcomes of psychiatric genetic counseling in relation to time since diagnosis and symptom onset

Consumer attitudes and preferences toward psychiatric genetic counselling and educational resources: A scoping review

INTRODUCTION

The etiology of psychiatric disorders is multifactorial including genomic and environmental risk factors. Psychiatric genetic counseling is an emerging field that may promote processes of adaptation to, and the management of, psychiatric disorders. Many countries lack dedicated services leading to a gap in care. This scoping review will inform the development of psychiatric genetics-based educational resources.

OBJECTIVES

To explore individuals with a psychiatric disorder and their relatives' attitudes and beliefs toward psychiatric genetics, genetic counseling, and genetics-based education. To evaluate how best to convey education to consumers.

METHOD

Database literature searches occurred on May 2nd, 2023, using PubMed, Medline, and PsycINFO. Reviews, letters to the editor, case reports, and publications before 2003 were excluded.

RESULTS

Twenty-four papers met the inclusion criteria. Results suggest individuals with a psychiatric disorder and their relatives tended to overestimate risk, and express concern about reproductive decision- making. Genetic counseling and educational resources were perceived to be useful and empowering.

CONCLUSION

Affected individuals and relatives are interested in gaining greater insight into their own and/or their relative's psychiatric disorder, management strategies, and understanding familial risks.

PRACTICE IMPLICATIONS

The evidence from this review may inform the development of genetics-based educational resources or guide future research.

Assessing co-occurring mental health conditions in a multidisciplinary Down syndrome clinic and the role of family history

Compared to the general population, individuals with Down syndrome (DS) are at a significantly increased risk to develop mental health conditions. This study sought to examine individuals with DS and co-existing mental health comorbidities at one DS specialty clinic. Retrospective chart review of medical records including demographics, genetic testing history, personal and familial mental health history, referrals for mental health indications, and recommendations was performed. Summary statistics, logistic regression, and log of odds were converted to odd ratios to assess associations and significance. The charts of 327 patients, average 19.4 years of age (1-70), were reviewed. Nearly half the participants (42.2%) had at least one diagnosis of a mental health condition. Those with a family history were significantly more likely to have a personal diagnosis of a mental health condition than those without a family history (p < 0.01). Moreover, those who completed referrals often received medical management recommendations (86%). This study highlights the prevalence of mental health comorbidities among individuals with DS, and the referral process for mental health conditions, at one DS specialty clinic. Further research is needed to investigate our family history findings, and to determine if these results are generalizable across other DS clinics.

Psychiatric genetic counseling for people with copy number variants associated with psychiatric conditions

22q11.2 deletion is one of the most well-known copy number variants (CNVs) associated with developing a psychiatric condition (e.g. schizophrenia), but there is a growing list of other CNVs which also confer substantial risk for developing psychiatric conditions. With increased use of chromosome microarray and exome sequencing, the frequency with which these CNVs are detected is increasing. While individuals with such CNVs often receive genetic counseling, research shows that associated psychiatric conditions are less often addressed - clinicians tend to focus on the non-psychiatric manifestations of the CNV. This represents an important service gap for people with these CNVs and their families, as research shows that genetic counseling about psychiatric illness can produce meaningful positive outcomes for people, including increases in empowerment, and self-efficacy. Therefore, there is a need to ensure that individuals with psychiatric condition-associated CNVs are being counseled about these manifestations of their condition in a way that can promote best outcomes. In this paper we describe the process of providing genetic counseling in two clinical scenarios in which a psychiatric susceptibility CNV is identified: 1) in an individual who has not been diagnosed with a psychiatric condition and 2) in an individual with an established psychiatric condition.