Allelic Variation of Risk for Anxiety Symptoms Moderates the Relation Between Adolescent Safety Behaviors and Social Anxiety Symptoms

Genetics of social anxiety disorder: a systematic review

Social anxiety disorder (SAD) is a common psychiatric disorder, often associated with avoidant temperament. Research studies have implicated a strong genetic architecture of SAD. We have conducted a systematic review on the genetics of SAD and yielded 66 articles. In general, prior research studies have focused on the serotonin transporter, oxytocin receptor, brain-derived neurotrophic factor and catechol-O-methyltransferase genes. Mixed and inconsistent results have been reported. Additional approaches and phenotypes have also been investigated, including pharmacogenetics of treatment response, imaging genetics and gene-environment interactions. Future directions warrant further international collaborative efforts, deep-phenotyping of clinical characteristics including consistent and reliable measurement-based symptom severity, and larger sample sizes to ensure sufficient power for stratification due to the heterogeneity of this chronic and often debilitating condition.

ADORA2A variation and adenosine A1 receptor availability in the human brain with a focus on anxiety-related brain regions: modulation by ADORA1 variation

Adenosine, its interacting A₁ and A_2A receptors, and particularly the variant rs5751876 in the A_2A gene ADORA2A have been shown to modulate anxiety, arousal, and sleep. In a pilot positron emission tomography (PET) study in healthy male subjects, we suggested an effect of rs5751876 on in vivo brain A₁ receptor (A₁AR) availability. As female sex and adenosinergic/dopaminergic interaction partners might have an impact on this rs5751876 effect on A₁AR availability, we aimed to (1) further investigate the pilot male-based findings in an independent, newly recruited cohort including women and (2) analyze potential modulation of this rs5751876 effect by additional adenosinergic/dopaminergic gene variation. Healthy volunteers (32/11 males/females) underwent phenotypic characterization including self-reported sleep and A₁AR-specific quantitative PET. Rs5751876 and 31 gene variants of adenosine A₁, A_2A, A_2B, and A₃ receptors, adenosine deaminase, and dopamine D₂ receptor were genotyped. Multivariate analysis revealed an rs5751876 effect on A₁AR availability (P = 0.047), post hoc confirmed in 30 of 31 brain regions (false discovery rate (FDR) corrected P values < 0.05), but statistically stronger in anxiety-related regions (e.g., amygdala, hippocampus). Additional effects of ADORA1 rs1874142 were identified; under its influence rs5751876 and rs5751876 × sleep had strengthened effects on A₁AR availability (P_both < 0.02; post hoc FDR-corrected Ps < 0.05 for 29/30 regions, respectively). Our results support the relationship between rs5751876 and A₁AR availability. Additional impact of rs1874142, together with rs5751876 and sleep, might be involved in regulating arousal and thus the development of mental disorders like anxiety disorders. The interplay of further detected suggestive ADORA2A × DRD2 interaction, however, necessitates larger future samples more comparable to magnetic resonance imaging (MRI)-based samples.

A Measure of Safety Behaviors for Use with Young People: Subtle Avoidance Measure for Youth

Objective: Safety behaviors have been found to undermine successful exposure in the treatment of anxiety disorders for both adults and children. Although reliable measures of safety behaviors have been developed for use with adults, no such measure has been developed specifically for pediatric populations. In light of this limitation, the current study aimed to develop and validate a measure of the use of safety behaviors suitable for children: The Subtle Avoidance Measure for Youth (SAMY).Methods: Clinical (n = 174) and community (n = 138) young people, aged 7-13 years, provided data.Results: Both exploratory and confirmatory factor analyses supported a three-factor solution of the SAMY, which reflected checking behaviors, behaviors related to image management, and behaviors related to physical protection. The SAMY and its subscales demonstrated strong internal consistency, test-retest reliability, construct validity, and the ability to discriminate between clinical and community participants.Conclusions: Given its solid psychometric properties, the SAMY will prove useful for both research and clinical work with anxious young people.

Prevalence of Some Genetic Risk Factors for Nicotine Dependence in Ukraine

Tobacco smoking is known to be a strong risk factor for developing many diseases. The development and severity of smoking dependence results from interaction of environmental and lifestyle factors, psycho-emotional predispositions, and also from genetic susceptibility. In present study, we investigated polymorphic variants in genes contributed to nicotine dependence, as well as to increased impulsivity, known to be an important risk factor for substance use disorders, in Ukraine population. The genotype frequencies at CYP2A6, DNMT3B, DRD2, HTR2A, COMT, BDNF, GABRA2, CHRNA5, and DAT1 polymorphisms were determined in 171 Ukraine residents, and these data were compared with data for several other European populations and main ethnic groups. It has been found that genotype frequencies for all studied loci are in Hardy-Weinberg equilibrium in the Ukrainian population and correspond to the respective frequencies in European populations. These findings suggest a similar impact of these loci on nicotine dependence in Ukraine. Further studies with larger sample sizes are, however, needed to draw firm conclusions about the effect size of these polymorphisms.

Meta-Analysis of the RDoC Social Processing Domain across Units of Analysis in Children and Adolescents

OBJECTIVE

This meta-analysis advances a framework to understand correspondence among units of analysis of the social processing construct within Research Domain Criteria (RDoC).

METHOD

As requested for this special issue, eligible studies cited an RDoC-initiative paper or mentioned RDoC in the abstract, title, or keywords were empirical and peer reviewed, and described a correlation or regression analysis (r, β, or odds ratio) between two different units of analysis in the social processing domain in youth. We examined the frequency (descriptive statistics) and magnitude of correspondence between unit-pairs (random effects models), and predefined moderators (meta-regression).

RESULTS

Eight of the twenty-eight possible unit-by-unit pairs were identified, with subjective-by-behavior units being the most common. Of those, only subjective-by-circuit had significant correspondence between units. Moderator analysis revealed that the age and diagnosis of generalized anxiety disorder moderated correspondence between subjective-by-circuit units of analysis, and that a diagnosis of autism spectrum disorder moderated correspondence between subjective-by-gene units of analysis. Younger ages and inclusion of either diagnostic group reduced correspondence.

CONCLUSIONS

These findings indicate that the RDoC initiative has generated limited research within the social processing domain across units of analysis in youth to date. Moreover, National Institute of Mental Health (NIMH)-funded studies do not appear to be biased toward supporting the RDoC framework. However, the limited number of included studies precludes the generalizability of these findings and underscores the need for further research. Despite this, results suggest that the NIMH model for providing standard batteries of measurement tools may effectively reduce spurious correlations between subjective-by-behavior units of analysis.

Multi-Informant Assessments of Adolescent Social Anxiety: Adding Clarity by Leveraging Reports from Unfamiliar Peer Confederates

Adolescent social anxiety (SA) assessments often include adolescent and parent reports, and low reporting correspondence results in uncertainties in clinical decision-making. Adolescents display SA within non-home contexts such as peer interactions. Yet, current methods for collecting peer reports raise confidentiality concerns, though adolescent SA assessments nonetheless would benefit from context-specific reports relevant to adolescent SA (i.e., interactions with unfamiliar peers). In a sample of 89 adolescents (30 Evaluation-Seeking; 59 Community Control), we collected SA reports from adolescents and their parents, and SA reports from unfamiliar peer confederates who interacted with adolescents during 20-minute mock social interactions. Adolescents and parents completed reports on trait measures of adolescent SA and related concerns (e.g., depressive symptoms), and adolescents completed self-reports of state arousal within mock social interactions. Adolescents' SA reports correlated with reports on parallel measures from parents in the .30s and with peer confederates in the .40s to .50s, whereas reports from parent-confederate dyads correlated in the .07 to .22 range. Adolescent, parent, and peer confederate SA reports related to reports on trait measures of adolescent SA and depressive symptoms, and distinguished Evaluation-Seeking from Community Control Adolescents. Confederates' SA reports incrementally predicted adolescents' self-reported SA over and above parent reports, and vice versa, with combined Rs ranging from .51 to .60. These combined Rs approximate typical correspondence levels between informants who observe adolescents in the same context (e.g., mother-father). Adolescent and peer confederate (but not parent) SA reports predicted adolescents' state arousal in social interactions. These findings have implications for clarifying patterns of reporting correspondence in clinical assessments of adolescent SA.

School Refusal Assessment Scale-Revised: Factorial Invariance and Latent Means Differences across Gender and Age in Spanish Children

The aim of this study was to analyze the factorial invariance and latent means differences of the Spanish version of the School Refusal Assessment Scale-Revised for Children (SRAS-R-C) in a sample of 1,078 students (50.8% boys) aged 8-11 years (M = 9.63, SD = 1.12). The results revealed that the proposed model in this study, with a structure of 18 items divided into four factors (Negative Affective, Social Aversion and/or Evaluation, To Pursue Attention and Tangible Reinforcements), was the best-fit model with a tetra-factorial structure, remaining invariant across gender and age. Analysis of latent means differences indicated that boys and 11-year-old students scored highest on the Tangible Reinforcements subscale compared with their 8- and 9-year-old peers. On the contrary, for the subscales of Social Aversion and/or Evaluation and to Pursue Attention, the differences were significant and higher in younger age groups compared to 11-year-olds. Appropriate indexes of reliability were obtained for SRAS-R-C subscales (0.70, 0.79, 0.87, and 0.72). Finally, the founded correlation coefficients of scores of the SRAS-R-C revealed a predictable pattern between school refusal and positive/negative affect and optimism/pessimism.