Posttraumatic stress-related psychological functioning in adult survivors of childhood cancer

Post-traumatic stress symptoms, post-traumatic stress disorder, and post-traumatic growth among cancer survivors: a systematic scoping review of interventions

The detrimental effects of Post-Traumatic Stress Symptoms (PTSS) and Post-Traumatic Stress Disorder (PTSD) and the benefits of Post-Traumatic Growth (PTG) are well established for cancer survivors. Increased cancer survival rates necessitate an understanding of how these two paradoxical outcomes, PTSS/PTSD and PTG, are targeted through interventions. This systematic scoping review aims to (a) examine existing evidence on interventions targeting PTSS/PTSD and/or PTG among cancer survivors and (b) identify knowledge gaps to inform future research. Following the six steps of a scoping review, 76 articles met the inclusion criteria. Quantitative articles were examined using descriptive analysis. Frequency counts of the collated data were tabulated into summary tables. Qualitative articles were reviewed using meta-synthesis. Most articles were quantitative (n = 52) and targeted PTG (n = 68) through promising intervention approaches such as psychotherapy, mindfulness, physical activity, and psilocybin-assisted therapy. Three key implications for future research and practice were synthesized: (1) mechanistic considerations for intervention design that provide a roadmap for rigorous and theoretically-grounded research; (2) the need for improved representation of cancer survivors in trials; and (3) potential facilitators of intervention efficacy. Together, these findings can direct future research to optimize interventions to reduce PTSS/PTSD and promote PTG achievement among cancer survivors.

Prevalence and incidence of post-traumatic stress disorder and symptoms in people with chronic somatic diseases: A systematic review and meta-analysis

INTRODUCTION

Comprehensive evidence on prevalence and incidence of post-traumatic stress disorder (PTSD) and symptoms (PTSS) in people with chronic somatic diseases (CD) is lacking.

OBJECTIVE

To systematically and meta-analytically examine prevalence and incidence of PTSD and PTSS in people with CD compared with people without CD.

METHODS

MEDLINE, Embase, and PsycINFO were searched from inception (1946) to June 2020. Studies reporting point, 12-month, lifetime prevalence, or 12-month incidence of PTSD and PTSS in people with CD were selected and reviewed in accordance with PRISMA guidelines by two independent reviewers. Risk of bias was assessed by a combination of the Newcastle-Ottawa Scale and recommendations of the Cochrane Collaboration for non-comparative studies. Pooled estimates were calculated using random effects meta-analyses. Between-study heterogeneity was assessed using the I2 statistic.

RESULTS

Data were extracted from studies reporting on point prevalence (k = 60; n = 21,213), 12-month prevalence (k = 3; n = 913), and lifetime prevalence (k = 6; n = 826). 12-month incidence estimates were not available. The pooled estimate for the point prevalence of PTSD (k = 41) across CD was 12.7% (95% CI, 8.6 to 18.4%) and 19.6% regarding PTSS (13.2 to 28.1%; k = 24). Individuals with cerebrovascular disorder (k = 4) showed the highest pooled point prevalence for PTSD (23.6%, 95% CI, 16.8 to 32.0%), those with cardiovascular diseases the lowest (6.6%, 1.9 to 20.9%; k = 5). The pooled 12-month prevalence of PTSD (k = 3) was 8.8% (95% CI, 5.5 to 13.5%) and the lifetime prevalence (k = 6) was 12.1% (7.6 to 18.5%). Pooled estimates of PTSD prevalence in people with compared to those without CD showed an odds ratio of 9.96 (95% CI, 2.55 to 38.94; k = 5).

CONCLUSION

Post-traumatic stress disorder and PTSS are common and substantially higher in people with compared to those without CD. Earlier detection and treatment of this comorbidity might improve mental and physical health, reduce the incidence of further diseases, and reduce mortality.

CLINICAL TRIAL REGISTRATION

https://osf.io/9xvgz, identifier 9xvgz.

Posttraumatic growth after childhood cancer: Psychometric evaluation of a five-item short form and associations with mental health

OBJECTIVE

Research has described positive psychological outcomes after severe illness, including posttraumatic growth. The aim of the present research was to evaluate a short scale assessing posttraumatic growth within a sample of cancer survivors to provide an efficient instrument for research and care settings.

METHODS

Using data of a registry-based sample of N = 633 childhood cancer survivors (CCS) more than 25 years after diagnosis, we conducted an investigation of a five-item short form of the established Posttraumatic Growth Inventory (PTGI), the PPR-5 (PPR stands for "Posttraumatische Persönliche Reifung", the German expression for posttraumatic growth). We performed a confirmatory factor analysis, tested the PPR-5's internal consistency, and investigated associations with cancer-related, sociodemographic, and mental health variables (assessed using psychometrically tested screening instruments) using group comparisons and correlation analyses within a cross-sectional design.

RESULTS

Findings supported a unidimensional structure of the PPR-5. It also showed good reliability (ω = 0.81). CCS especially endorsed Relating to others and Personal strength. The PPR-5's sum score was negatively associated with current depression, anxiety, and sleep disorder symptoms, intake of antidepressants, and lifetime diagnoses of depression and anxiety disorders. It showed positive associations with resilient coping, higher age at diagnosis, partnership, and parenthood.

CONCLUSION

The PPR-5 allows for a brief assessment of posttraumatic growth. As it indicates aspects that support positive psychological adaptation to life as a (cancer) survivor, it could inform research and practice (e.g., as a screening measure, or in psychotherapy/counseling settings).

Genome-wide association study of posttraumatic stress disorder among childhood cancer survivors: results from the Childhood Cancer Survivor Study and the St. Jude Lifetime Cohort

Genetic influence shapes who develops posttraumatic stress disorder (PTSD) after traumatic events. However, the genetic variants identified for PTSD may in fact be associated with traumatic exposures (e.g., interpersonal violence), which appear heritable as well. Childhood cancer survivors (CCS) are at risk for PTSD, but genetic influences affecting cancer are unlikely to overlap with those affecting PTSD. This offers a unique opportunity to identify variants specific to PTSD risk. In a genome-wide association study (GWAS), 3984 5-year survivors of childhood cancer of European-ancestry from the Childhood Cancer Survivor Study (CCSS) were evaluated for discovery and 1467 survivors from the St. Jude Lifetime (SJLIFE) cohort for replication. Childhood cancer-related PTSD symptoms were assessed using the Posttraumatic Stress Diagnostic Scale in CCSS. GWAS was performed in CCSS using logistic regression and lead markers were replicated/meta-analyzed using SJLIFE. Cross-associations of identified loci were examined between CCS and the general population. PTSD criteria were met for 671 participants in CCSS and 161 in SJLIFE. Locus 10q26.3 was significantly associated with PTSD (rs34713356, functionally mapped to ECHS1, P = 1.36 × 10^-8, OR 1.57), and was replicated in SJLIFE (P = 0.047, OR 1.37). Variants in locus 6q24.3-q25.1 reached marginal significance (rs9390543, SASH1, P = 3.56 × 10^-6, OR 0.75) in CCSS and significance when meta-analyzing with SJLIFE (P = 2.02 × 10^-8, OR 0.75). Both loci were exclusively associated with PTSD in CCS rather than PTSD/stress-related disorders in general population (P-for-heterogeneity < 5 × 10^-6). Our CCS findings support the role of genetic variation in PTSD development and may provide implications for understanding PTSD heterogeneity.

Illness perceptions in childhood cancer survivor and caregivers' dyads

Surviving childhood cancer is a difficult experience for children and their caregivers, it can produce long-term emotional distress. Illness perceptions refer to the way people understand the different aspects related to illness from their individual and collective experiences.

OBJECTIVE

to compare the illness perceptions of adolescent childhood cancer survivors and their caregivers and examine the relationship between illness perception of childhood cancer survivors, their caregivers, and sociodemographic, illness, and treatment variables. Forty-three survivor-caregiver dyads (the mean age of a survivor 17.05 years old; the mean age of caregivers 47.53 years old) participated in the study and answered the Brief Illness Perception Questionnaire (Brief IPQ) and Demographics data.

RESULTS

Results showed significant differences in the illness perceptions of survivors and caregivers. Caregivers presented more negative cognitive perceptions than survivors (t = -6.701, p < 0.001), especially in the identity dimension (t = -4.327, p < 0.001), and more negative emotional perceptions than survivors (t = -4.132, p < 0.001), both in concern (t = -3.695, p < 0.001) and emotional representation (t = -3.466, p < 0.001). No significant correlations were found between survivors' and caregivers' illness perceptions and sociodemographic illness variables.

CONCLUSION

These findings showed that even though dyads went through cancer together, survivors' and caregivers' perceptions of childhood cancer are different, indicating the need to better understand how children growing up with a chronic disease develop such illness perceptions and their experience.

Loneliness predicts suicidal ideation and anxiety symptoms in long-term childhood cancer survivors

Long-term childhood cancer survivors (CCS) are at risk for adverse late effects. However, not all of them are well understood. The present study addressed loneliness, a previously under-researched mental health risk in cancer survivor populations. We assessed the prevalence of loneliness and its impact on psychological symptoms over time. Method: A registry-based sample of N = 633 adult long-term CCS underwent medical and psychological assessments and took part in a follow-up survey 2.5 years later. Psychological symptoms (somatic, anxiety, depression symptoms, and suicidal ideation) were measured using the Patient Health Questionnaire. We calculated linear regression models of symptoms at follow-up to investigate the impact of loneliness over time (controlling for symptoms at baseline and relevant confounders). Results: Loneliness was reported by 17.70% of CCS. In multivariate linear regression analyses, loneliness was still predictive of more severe anxiety symptoms and suicidal ideation over two years later. Loneliness did not predict somatic and depression symptoms at follow-up (which increased with age). Conclusions: Loneliness affected a significant number of CCS and was a risk factor for persistent anxiety symptoms and suicidal ideation. The extent to which young cancer patients’ re-integration into society is successful could thus have important implications for well-being in adulthood.

MDMA-assisted psychotherapy for treatment of anxiety and other psychological distress related to life-threatening illnesses: a randomized pilot study

The success of modern medicine creates a growing population of those suffering from life-threatening illnesses (LTI) who often experience anxiety, depression, and existential distress. We present a novel approach; investigating MDMA-assisted psychotherapy for the treatment of anxiety in people with an LTI. Participants with anxiety from an LTI were randomized in a double-blind study to receive MDMA (125 mg, n = 13) or placebo (n = 5) in combination with two 8-h psychotherapy sessions. The primary outcome was change in State-Trait Anxiety Inventory (STAI) Trait scores from baseline to one month post the second experimental session. After unblinding, participants in the MDMA group had one open-label MDMA session and placebo participants crossed over to receive three open-label MDMA sessions. Additional follow-up assessments occurred six and twelve months after a participant’s last experimental session. At the primary endpoint, the MDMA group had a greater mean (SD) reduction in STAI-Trait scores, − 23.5 (13.2), indicating less anxiety, compared to placebo group, − 8.8 (14.7); results did not reach a significant group difference (p = .056). Hedges’ g between-group effect size was 1.03 (95% CI: − 5.25, 7.31). Overall, MDMA was well-tolerated in this sample. These preliminary findings can inform development of larger clinical trials to further examine MDMA-assisted psychotherapy as a novel approach to treat individuals with LTI-related anxiety.

Trial Registration: clinicaltrials.gov Identifier: NCT02427568, first registered April 28, 2015.

A review of psychological symptoms and post-traumatic growth among adolescent and young adult survivors of childhood cancer

The majority of childhood cancer patients survive well into adulthood, but remain at risk for psychological late effects that can impact overall health and quality of life. The current narrative review summarizes the literature on psychological late effects, including anxiety, depression, psychological distress, post-traumatic stress disorder, suicidality, psychoactive medication use, and post-traumatic growth in survivors of childhood cancers. While results were mixed, many studies demonstrated that psychological symptoms occurred at levels higher than would be expected in the general population. Treatment, environmental, and behavioral risk factors, as well as symptom onset and trajectory merit further investigation.

Fear of cancer recurrence among young adult cancer survivors-exploring long-term contributing factors in a large, population-based cohort

PURPOSE

Fear of cancer recurrence (FCR) may be debilitating, yet knowledge of FCR among the growing population of long-term young adult cancer survivors (YACS) is scarce. We explored risk of FCR and associated factors in a nation-wide, population-based cohort of YACS.

METHODS

All 5-year survivors diagnosed at the ages of 19-39 years with breast cancer (BC), malignant melanoma (MM), colorectal cancer (CRC), leukemia (LEU), or non-Hodgkin lymphoma (NHL) between 1985 and 2009 in Norway were identified by the Cancer Registry of Norway and completed the cross-sectional comprehensive NOR-CAYACS health survey. Univariate and multivariate linear regression modeling was performed.

RESULTS

In total, 936 survivors were included, with an average of 16 years since diagnoses. BC was the most prevalent cancer form (38.4%), followed by MM (24.7%), NHL (15.6%), CRC (11.8%), and LEU (9.6%). Survivors worried most about getting another cancer (74%), and (20%) reported quite a bit or a lot of FCR. BC and MM survivors had the highest FCR scores. Post-traumatic stress symptoms (PTSS) had the strongest association with FCR (Std B 0.21, p < 0.01), above demographic and clinical variables.

CONCLUSIONS

FCR is prevalent even among long-term YACS, including survivors of MM with favorable prognoses.

IMPLICATIONS FOR CANCER SURVIVORS

Attention to ongoing risks of PTSS and FCR in this growing survivor population is warranted to optimize future survivorship care.