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Objective: This study examines the association between psychosocial risk and protective factors and a wide range of psychosocial outcomes including emotional, social, cognitive, and physical domains in childhood cancer survivors (CCS). Methods: CCS from the Dutch Childhood Cancer Survivor Study (DCCSS)‐LATER cohort (diagnosed 1963–2001) part 2 (age ≥ 18 years, diagnosed < 18 years, ≥ 5 years since diagnosis) completed questionnaires on psychosocial risk and protective factors (Benefit and Burden Scale, Illness Cognition Questionnaire, Rosenberg Self‐Esteem Scale, and Impact of Cancer Scale), and psychosocial outcomes (Hospital Anxiety and Depression Scale, Self‐Rating Scale for Post‐Traumatic Stress Disorder, TNO‐AZL Questionnaire for Adult Health‐Related Quality of Life, and Short Form‐36). Associations were assessed with regression analysis, adjusting for attained age, sex, number of health conditions, and time since diagnosis, while correcting for multiple testing (p < 0.004). Results: A total of 1382 CCS participated, all diagnosed ≥ 15 years ago. The mean age of participating CCS was 36 years, and 51% were female. Perceived benefit and burden, acceptance, and helplessness, self‐esteem and social support were associated with the psychosocial outcomes. In the models including all psychosocial factors, most associations with psychosocial outcomes were seen for self‐esteem (10×), and perceived burden (9×). Self‐esteem (all β ≤ 0.47) and perceived burden (all β ≤ 0.38) demonstrated strongest associations of medium/large size. Conclusions: Perceptions of childhood cancer, illness cognitions, self‐esteem, and social support play a role in explaining psychosocial functioning in CCS, outweighing the influence of socio‐demographic and medical variables. Addressing negative perceptions and reducing feelings of helplessness, while promoting acceptance, self‐esteem, and social support, could provide intervention targets for CCS who encounter psychosocial challenges. [ABSTRACT FROM AUTHOR]

Background: The aim of this study is to evaluate how cumulative burden of clinically relevant, self‐reported outcomes in childhood cancer survivors (CCSs) compares to a sibling control group and to explore how the burden corresponds to levels of care proposed by existing risk stratifications. Methods: The authors invited 5925 5‐year survivors from the Dutch Childhood Cancer Survivor Study (DCCSS LATER) cohort and their 1066 siblings to complete a questionnaire on health outcomes. Health outcomes were validated by self‐reported medication use or medical record review. Missing data on clinically relevant outcomes in CCSs for whom no questionnaire data were available were imputed with predictive mean matching. We calculated the mean cumulative count (MCC) for clinically relevant outcomes. Furthermore, we calculated 30‐year MCC for groups of CCSs based on primary cancer diagnosis and treatment, ranked 30‐year MCC, and compared the ranking to levels of care according to existing risk stratifications. Results: At median 18.5 years after 5‐year survival, 46% of CCSs had at least one clinically relevant outcome. CCSs experienced 2.8 times more health conditions than siblings (30‐year MCC = 0.79; 95% confidence interval [CI], 0.74–0.85 vs. 30‐year MCC = 0.29; 95% CI, 0.25–0.34). CCSs' burden of clinically relevant outcomes consisted mainly of endocrine and vascular conditions and varied by primary cancer type. The ranking of the 30‐year MCC often did not correspond with levels of care in existing risk stratifications. Conclusions: CCSs experience a high cumulative burden of clinically relevant outcomes that was not completely reflected by current risk stratifications. Choices for survivorship care should extend beyond primary tumor and treatment parameters, and should consider also including CCSs' current morbidity. Survivors of childhood cancer experience a high cumulative burden of clinically relevant outcomes. Choices for survivorship care should extend beyond primary tumor and treatment parameters and should also consider including the current morbidity of childhood cancer survivors. [ABSTRACT FROM AUTHOR]

Background: Overweight and obesity are common challenges among childhood cancer survivors. Overweight may be disguised, as survivors can have normal weight but high fat percentage (fat%) on dual-energy X-ray absorptiometry (DXA). We aimed to assess prevalence, identify determinants and biomarkers, and assess which method captures overweight best, in a nationwide cohort. Methods: The prevalence of overweight and obesity, primarily defined by body mass index (BMI), was assessed in the DCCSS-LATER cohort of adult survivors treated from 1963-2002, with the LifeLines cohort as reference. The associations between risk factors and overweight metrics were investigated using logistic regression. Additional overweight metrics included DXA fat%, waist circumference (WC), waist/hip ratio (WHR), waist/height ratio (WHtR), and high-molecular-weight (HMW) adiponectin. Results: A total of 2338 (mean age 35.5 years, follow-up 28.3 years) survivors participated. The overweight prevalence was 46.3% in men and 44.3% in women (obesity 11.2% and 15.9%, morbid obesity 2.4% and 5.4%), with highest rates among brain tumor survivors. Compared to controls, there was no overall increased overweight rate, but this was higher in women > 50 years, morbid obesity in men > 50 years. Overweight at cancer diagnosis (adjusted odds ratio [aOR] = 3.83, 95% CI 2.19-6.69), cranial radiotherapy (aOR = 3.21, 95% CI 1.99-5.18), and growth hormone deficiency (separate model, aOR = 1.61, 95% CI 1.00-2.59) were associated with overweight. Using BMI, WC, WHR, and WHtR, overweight prevalence was similar. Low HMW adiponectin, present in only 4.5% of survivors, was an insensitive overweight marker. Dual-energy X-ray absorptiometry–based classification identified overweight in an additional 30%, particularly after abdominal radiotherapy, total body irradiation, anthracyclines, and platinum. Conclusions: Overweight occurs in almost half of long-term survivors. There was no overall increased incidence of overweight compared to controls. We identified factors associated with overweight, as well as subgroups of survivors in whom DXA can more reliably assess overweight. [ABSTRACT FROM AUTHOR]

Objective: To describe psychosocial outcomes among adult siblings of very long‐term childhood cancer survivors (CCS), to compare these outcomes to reference populations and to identify factors associated with siblings' psychosocial outcomes. Methods: Siblings of survivors (diagnosed <18 years old, between 1963 and 2001, >5 years since diagnosis) of the Dutch Childhood Cancer Survivor Study DCCSS‐LATER cohort were invited to complete questionnaires on HRQoL (TNO‐AZL Questionnaire for Adult's HRQoL), anxiety/depression (Hospital Anxiety and Depression Scale), post‐traumatic stress (Self‐Rating Scale for Post‐traumatic Stress Disorder), self‐esteem (Rosenberg Self‐Esteem Scale) and benefit and burden (Benefit and Burden Scale for Children). Outcomes were compared to a reference group if available, using Mann‐Whitney U and chi‐Square tests. Associations of siblings' sociodemographic and CCS' cancer‐related characteristics with the outcomes were assessed with mixed model analysis. Results: Five hundred five siblings (response rate 34%, 64% female, mean age 37.5, mean time since diagnosis 29.5) of 412 CCS participated. Siblings had comparable HRQoL, anxiety and self‐esteem to references with no or small differences (r = 0.08−0.15, p < 0.05) and less depression. Proportions of symptomatic PTSD were very small (0.4%−0.6%). Effect sizes of associations of siblings' sociodemographic and CCS cancer‐related characteristics were mostly small to medium (β = 0.19−0.67, p < 0.05) and no clear trend was found in the studied associated factors for worse outcomes. Conclusions: On the very long‐term, siblings do not have impaired psychosocial functioning compared to references. Cancer‐related factors seem not to impact siblings' psychosocial functioning. Early support and education remain essential to prevent long‐term consequences. [ABSTRACT FROM AUTHOR]

Background: This study compares a comprehensive range of psychosocial outcomes of adult childhood cancer survivors (CCS) to general population‐based references and identifies sociodemographic and medical risk factors. Methods: CCS from the Dutch Childhood Cancer Survivor Study (DCCSS)‐LATER cohort (diagnosed 1963–2001) part 2 (attained age ≥18 years, diagnosed <18 years, ≥5 years since diagnosis) completed the Rosenberg Self‐Esteem Scale, Hospital Anxiety and Depression Scale, Distress Thermometer, Self‐Rating Scale for Post‐Traumatic Stress Disorder, and the Short Form‐36 (Health Related Quality of Life). CCS' scores were compared with references using analysis of variances and logistic regression analysis, controlling for age and sex (p <.05). Risk factors for worse psychosocial outcomes were assessed with regression analyses (p <.05). Results: CCS, N = 1797, mean age 35.4 years, 49.0% female, all ≥15 years since diagnosis, participated. Three percent reported posttraumatic stress disorder because of childhood cancer and 36.6% experienced clinical distress. CCS did not differ from references on self‐esteem and anxiety but were less depressed (d = −.25), and scored poorer on all health‐related quality of life scales, except for bodily pain (.01 ≤ d ≥ −.36). Female sex, lower educational attainment, not being in a relationship, and being unemployed were negatively associated with almost all psychosocial outcomes. Except for a central nervous system tumor diagnosis, few medical characteristics were associated with psychosocial outcomes. Conclusion: CCS appear resilient regarding mental health but have slightly poorer health‐related quality of life than references. Sociodemographic characteristics and central nervous system tumors were related to most psychosocial outcomes, but no clear pattern was observed for other medical factors. Future studies should address additional factors in explaining CCS' psychosocial functioning, such as coping, social support, and physical late effects. Adult childhood cancer survivors appear resilient regarding mental health but have slightly poorer health‐related quality of life than reference patients. Sociodemographic characteristics and central nervous system tumors were related to most psychosocial outcomes, but no clear pattern was observed for other medical factors. [ABSTRACT FROM AUTHOR]

Objective: To describe health‐related quality of life (HRQoL), post‐traumatic stress and post‐traumatic growth of parents of long‐term survivors of childhood cancer (CCS) and study associated factors. Methods: Parents of survivors of the Dutch Childhood Cancer Survivor Study LATER cohort below 30 years and diagnosed 1986–2001 were invited to complete the TNO‐AZL Questionnaire for Adult's HRQoL (e.g., sleep and aggressive emotions), Self‐Rating Scale for Post‐traumatic Stress Disorder, Post‐traumatic Growth Inventory, and Illness Cognition Questionnaire. HRQoL domain scores were compared to references using Mann‐Whitney U tests. Correlations between post‐traumatic stress, growth and HRQoL were evaluated. Medical characteristics of their child and illness cognitions were studied as associated factors of HRQOL, post‐traumatic stress and growth. p < 0.05 was considered statistically significant. Results: Parents (n = 661 of n = 448 survivors, 56% female, mean time since child's diagnosis: 21.3 [SD: 3.3] years) reported better HRQoL in social functioning and aggressive emotions than references (r =.08–0.17). Mothers additionally reported better HRQoL in pain, daily activities, sexuality, vitality, positive and depressive emotions (r =.07–0.14). Post‐traumatic stress was symptomatic in 3%, and associated with worse HRQoL (r = −0.27–0.48). Post‐traumatic growth was positively associated to post‐traumatic stress and better HRQoL (r = 0.09–0.12). Cancer recurrence was associated to better HRQoL (β = 0.37–0.46). Acceptance illness cognitions were associated to better (β = 0.12–0.25), and helplessness to worse outcomes (β = 0.14–0.38). Conclusions: HRQoL of parents of young adult survivors of CCS is comparable to references or slightly better. Only a small proportion reports symptomatic post‐traumatic stress. Improving acceptance and reducing feelings of helplessness may provide treatment targets for parents with psychosocial problems. [ABSTRACT FROM AUTHOR]

Simple Summary: We studied survivors of childhood cancer who received cancer treatment that might affect the kidneys and compared them to controls from the general population. We investigated if there was a difference in the occurrence of tubular dysfunction. The tubules are the part of the kidney responsible for reabsorption of needed substances to the blood and the removal of wastes. After around 25 years since their cancer diagnosis, we found that in general there were no differences between survivors and controls, but survivors more often had losses of small proteins in the urine. Yet, some survivors of childhood cancer were found to have an increased risk of tubular dysfunction. Namely, survivors treated with the chemotherapeutic agents ifosfamide, cisplatin or carboplatin. Therefore, these patients should be monitored during their follow-up. The aim of this nationwide cross-sectional cohort study was to determine the prevalence of and risk factors for tubular dysfunction in childhood cancer survivors (CCS). In the DCCSS-LATER 2 Renal study, 1024 CCS (≥5 years after diagnosis), aged ≥ 18 years at study, treated between 1963 and 2001 with potentially nephrotoxic therapy (i.e., nephrectomy, abdominal radiotherapy, total body irradiation, cisplatin, carboplatin, ifosfamide, high-dose cyclophosphamide, or hematopoietic stem cell transplantation) participated, and 500 age- and sex-matched participants from Lifelines acted as controls. Tubular electrolyte loss was defined as low serum levels (magnesium < 0.7 mmol/L, phosphate < 0.7 mmol/L and potassium < 3.6 mmol/L) with increased renal excretion or supplementation. A α1-microglobulin:creatinine ratio > 1.7 mg/mmol was considered as low-molecular weight proteinuria (LMWP). Multivariable risk analyses were performed. After median 25.5 years follow-up, overall prevalence of electrolyte losses in CCS (magnesium 5.6%, potassium 4.5%, phosphate 5.5%) was not higher compared to controls. LMWP was more prevalent (CCS 20.1% versus controls 0.4%). LMWP and magnesium loss were associated with glomerular dysfunction. Ifosfamide was associated with potassium loss, phosphate loss (with cumulative dose > 42 g/m2) and LMWP. Cisplatin was associated with magnesium loss and a cumulative dose > 500 mg/m2 with potassium and phosphate loss. Carboplatin cumulative dose > 2800 mg/m2 was associated with potassium loss. In conclusion, long-term tubular dysfunction is infrequent. Yet, ifosfamide, cisplatin and carboplatin are risk factors. [ABSTRACT FROM AUTHOR]

Background: Fatigue is often reported by patients with childhood cancer both during and after cancer treatment. Several instruments to measure fatigue exist, although none are specifically validated for use in childhood cancer survivors (CCS). The aim of the current study was to present norm values and psychometric properties of the Checklist Individual Strength (CIS) and Short Fatigue Questionnaire (SFQ) in a nationwide cohort of CCS. Methods: In total, 2073 participants were included from the Dutch Childhood Cancer Survivor Study (DCCSS) LATER cohort. Normative data, construct validity, structural validity, and internal consistency were calculated for the CIS and SFQ. In addition, reliability and a cutoff score to indicate severe fatigue were determined for the SFQ. Results: Correlations between CIS/SFQ and vitality measures asking about fatigue were high (>0.8). Correlations between CIS/SFQ and measures of different constructs (sleep, depressive emotions, and role functioning emotional) were moderate (0.4-0.6). Confirmatory factor analysis resulted in a four-factor solution for the CIS and a one-factor solution for the SFQ with Cronbach's alpha for each (sub)scale showing good to excellent values (>0.8). Test-retest reliability of the SFQ was adequate (Pearson's correlation = 0.88; ICC = 0.946; weighted Cohen's kappa item scores ranged 0.31-0.50) and a cut-off score of 18 showed good sensitivity and specificity scores (92.6% and 91.3%, respectively). Conclusion: The current study shows that the SFQ is a good instrument to screen for severe fatigue in CCS. The CIS can be used as a tool to assess the multiple fatigue dimensions in CCS. [ABSTRACT FROM AUTHOR]