Oncolytic HSV-1 G207 Immunovirotherapy for Pediatric High-Grade Gliomas.

BACKGROUND: Outcomes in children and adolescents with recurrent or progressive high-grade glioma are poor, with a historical median overall survival of 5.6 months. Pediatric high-grade gliomas are largely immunologically silent or "cold," with few tumor-infiltrating lymphocytes. Preclinically, pediatric brain tumors are highly sensitive to oncolytic virotherapy with genetically engineered herpes simplex virus type 1 (HSV-1) G207, which lacks genes essential for replication in normal brain tissue. METHODS: We conducted a phase 1 trial of G207, which used a 3+3 design with four dose cohorts of children and adolescents with biopsy-confirmed recurrent or progressive supratentorial brain tumors. Patients underwent stereotactic placement of up to four intratumoral catheters. The following day, they received G207 (107 or 108 plaque-forming units) by controlled-rate infusion over a period of 6 hours. Cohorts 3 and 4 received radiation (5 Gy) to the gross tumor volume within 24 hours after G207 administration. Viral shedding from saliva, conjunctiva, and blood was assessed by culture and polymerase-chain-reaction assay. Matched pre- and post-treatment tissue samples were examined for tumor-infiltrating lymphocytes by immunohistologic analysis. RESULTS: Twelve patients 7 to 18 years of age with high-grade glioma received G207. No dose-limiting toxic effects or serious adverse events were attributed to G207 by the investigators. Twenty grade 1 adverse events were possibly related to G207. No virus shedding was detected. Radiographic, neuropathological, or clinical responses were seen in 11 patients. The median overall survival was 12.2 months (95% confidence interval, 8.0 to 16.4); as of June 5, 2020, a total of 4 of 11 patients were still alive 18 months after G207 treatment. G207 markedly increased the number of tumor-infiltrating lymphocytes. CONCLUSIONS: Intratumoral G207 alone and with radiation had an acceptable adverse-event profile with evidence of responses in patients with recurrent or progressive pediatric high-grade glioma. G207 converted immunologically "cold" tumors to "hot." (Supported by the Food and Drug Administration and others; ClinicalTrials.gov number, NCT02457845.).

Children's Oncology Group KidsCare smartphone application for parents of children with cancer.

BACKGROUND: Parents of children with cancer must learn and retain crucial information necessary to provide safe care for their child. Smartphone applications (apps) provide a significant opportunity to meet the informational needs of these parents. We aimed to develop, refine, and evaluate a smartphone app, informed by the Children's Oncology Group (COG) expert consensus recommendations, to support the informational needs of parents of children with cancer. PROCEDURE: We employed a user-centered iterative mixed-methods approach in two phases (prototype development/refinement and pilot testing). We engaged parents and clinicians in evaluating the app via qualitative interviews and standardized tools that measured app quality (Mobile Application Rating Scale [MARS]), usability (System Usability Scale [SUS]), and acceptability (System Acceptability Scale [SAS]). We evaluated early usage patterns after public release. RESULTS: Thirty-two parents and 17 clinicians participated. Mean (± standard deviation [SD]) scores for app quality, usability, and acceptability were: MARS: 4.5 ± 0.7 on a 5-point scale; SUS: 86.7 ± 23.8 on a 100-point scale; and SAS: superior (61%); similar (28%); inferior (11%) to written materials. Qualitative findings largely confirmed the quantitative data. Downloads of the app during the first year following public release have exceeded 5000. CONCLUSIONS: The COG KidsCare app prototype was found to be of high quality and received high usability and acceptability ratings. Further testing is needed to determine app effectiveness in improving parental knowledge regarding care of children with cancer.

The influence of perceived racial bias and health-related stigma on quality of life among children with sickle cell disease.

Objectives: Individuals with sickle cell disease (SCD) experience significant health problems that may result in unpredictable pain episodes and frequent healthcare utilization. Disparities in clinical care may contribute to health-related stigma and racial bias for this majority African-American/Black population. There is less known about the influence of health-related stigma and racial bias on the health-related quality of life (HRQOL) of children with SCD. In the present study, we assessed these relationships and identified differences across demographic factors (i.e. age, gender).Design: Data was collected from African American children with SCD aged 8-16 years (57% male, 63% HbSS). Children completed the Childhood Stigma Scale (adapted for SCD), the Child Perceptions of Racism in Children and Youth scale, and the Pediatric Quality of Life Inventory Sickle Cell Disease Module. Caregivers provided demographic information.Results: In the first regression model, health-related stigma (p = .007) predicted HRQOL, but neither age nor gender were significant predictors. In the second regression model, age (p = .03) predicted HRQOL, but neither gender nor racial bias were significant predictors. Of interest, there was a significant interaction between age, gender, and racial bias (p = .02). Specifically, older girls who reported high levels of perceived racial bias had poorer HRQOL.Conclusions: Our study highlights the need for increased awareness about the effects of health-related stigma and racial bias on HRQOL for children with SCD, particularly for older girls who endorse racial bias. Our findings will guide future stigma and bias reduction interventions that may meet the needs of older girls with SCD.

Caregiver Religious Coping and Posttraumatic Responses in Pediatric Hematopoietic Stem Cell Transplant.

OBJECTIVE: Caregivers often experience their child's hematopoietic stem cell transplant (HCT) treatment as traumatic. Although many caregivers develop posttraumatic stress symptoms (PTSS) in response to supporting their child through HCT, other caregivers demonstrate posttraumatic growth (PTG). Religious coping may contribute to these different adjustment trajectories; however, more information is needed to clarify the unique associations of positive versus negative religious coping on caregiver PTSS and PTG in the context of pediatric HCT. This study aimed to examine the relationships between negative and positive religious coping on caregivers PTSS and PTG while controlling for caregiver sex, self-efficacy, and social support. METHODS: Caregivers (N = 140) of youth admitted to the hospital for their first HCT were asked to complete self-report measures of their use of positive and negative religious coping, PTSS, PTG, social support, and self-efficacy. Two hierarchical linear regressions were conducted to test hypotheses. RESULTS: Greater positive religious coping, but not negative religious coping, was associated with caregivers reporting more PTG in response to pediatric HCT. More negative religious coping, but not positive religious coping, was associated with caregivers experiencing greater PTSS. CONCLUSIONS: Engaging in positive religious coping appears to promote better caregiver adjustment to pediatric HCT, whereas negative religious coping may increase caregiver risk for developing PTSS. Screening caregivers' religious beliefs, including the type of religious coping they employ, could inform providers regarding the best approach to supporting caregivers towards a growth trajectory and mitigate PTSS.

Pain-Related Injustice Appraisals in Youth with Sickle Cell Disease: A Preliminary Investigation.

OBJECTIVES: Sickle cell disease (SCD) is a genetic disorder that affects approximately 100,000 Americans, the majority of whom are African American. SCD-related pain often has deleterious effects on functioning and quality of life. The inherited nature of SCD, SCD-related stigma, and serious physical and functional impact of SCD-related pain create a situation ripe for individuals to appraise their SCD-related pain as unfair or unjust. The aim of this preliminary investigation is to explore the extent to which pediatric patients with SCD appraise their pain as unjust and how these appraisals relate to functioning. METHODS: Participants were youth with SCD (N = 30, mean age = 11.3, 57% boys) who attended a hematology clinic visit. Patients were invited to complete paper-based questionnaires assessing pain-related injustice appraisals, pain catastrophizing, pain and hurt, functional disability, depression, anxiety, and peer relationships. RESULTS: Results of hierarchical regressions indicate that pain-related injustice significantly predicted functional disability, depression, and anxiety after controlling for patient pain and catastrophizing. CONCLUSIONS: These findings suggest that pain-related injustice appraisals are an important contributor to the pain experience of youth with SCD. Early identification and remediation of pain-related injustice appraisals could have long-term functional benefits for youth with SCD.

Outpatient pain clinic and intranasal fentanyl to improve sickle cell disease outcomes.

BACKGROUND: Acute pain events are a leading complication for sickle cell patients. In an attempt to improve pain outcomes, we developed an outpatient pain clinic, and included intranasal fentanyl in the opioid emergency department (ED) pain order set. We evaluated admission rates and opioid administration for patients that attended both the outpatient pain clinic and ED within a 3-month period. METHODS: We recorded the admission rate, IV morphine equivalents, and time from triage for each opioid order and administration from both an outpatient pain clinic and ED visit within a 3-month period for an individual pediatric patient with sickle cell disease. RESULTS: Thirty patients received acute pain management in both settings. We identified a significant reduction in hospital admission when patients received care in the pain clinic as compared to the ED (17% vs 43%, P = .02). Additionally, outpatient pain clinic patients received significantly less IV morphine equivalents than patients received in the ED (5.6 vs 10.6 IV morphine equivalents, P < .0001). In the ED, intranasal fentanyl was administered in a significantly shorter time than patients ordered intravenous opioid (43 vs 75 min, P = .02). The mean time to receiving an opioid in the outpatient pain clinic was 57 min. CONCLUSION: The use of an outpatient pain clinic can reduce admission rates as compared to the ED. The use of intranasal fentanyl reduced the time to first opioid administration in the ED. Patient-centered research or quality improvement projects should continue to focus on novel approaches to acute pain event management.

The impact of pediatric hematopoietic stem cell transplant timing and psychosocial factors on family and caregiver adjustment.

BACKGROUND: The impact of pediatric hematopoietic stem cell transplant (HCT) on family functioning varies, but little is known about how the timing of HCT in children's treatment course contributes to this variability. This study examines how preexisting child, sibling, and family problems, the length of time between diagnosis to HCT, and children's age at HCT are associated with family and caregiver functioning. PROCEDURE: Caregivers (n = 140) of children (≤18 years old) scheduled to undergo their first HCT completed the Psychological Assessment Tool-HCT and the Impact on Family Scale. Treatment information was extracted from electronic medical records. A bootstrapped multivariate path analysis was used to test the hypotheses. RESULTS: More preexisting family problems related to greater caregiver perceived negative impact of their child's HCT across family and caregiver functioning domains. Less time between diagnosis and HCT was associated with greater caregiver personal strain, particularly for those with younger children undergoing HCT. Younger child age at HCT was also associated with a larger negative impact on family social functioning. CONCLUSIONS: Families with preexisting problems are the most at-risk for experiencing negative impacts related to their child's HCT. The timing of a child's HCT within their treatment course and the child's age during HCT may impact families' social functioning and caregiver adjustment. Screening families for preexisting family problems, particularly for families with young children or who are abruptly learning of their child's need for an HCT, may assist providers in identifying families who would benefit from earlier or more intensive psychosocial support.

Demographic, medical, and psychosocial predictors of benefit finding among caregivers of childhood cancer survivors.

BACKGROUND: There is a growing body of literature examining benefit finding, or finding positive outcomes in the face of adversity, among both adults and children with chronic conditions, and to some degree among caregivers. This study examined demographic, medical, and psychosocial predictors of greater benefit finding specifically among caregivers of childhood cancer survivors. METHODS: Caregivers of children who had completed treatment for cancer (n = 83) completed measures assessing child and caregiver demographic information and caregiver coping (active, acceptance, emotion-focused, and avoidant), optimism, social support, caregiving burden, posttraumatic stress symptoms, illness impact (how much caregivers feel impacted by their child's illness in various domains), and benefit finding (positive outcomes). RESULT: Regression analyses indicated that positive spiritual coping, optimism, and illness impact uniquely predicted overall benefit finding for caregivers of childhood cancer survivors. CONCLUSION: Results point to adaptive tendencies that are associated with finding benefits when caring for a childhood cancer survivor and suggest potential avenues for intervention among this population. Copyright © 2015 John Wiley & Sons, Ltd.

Inferior outcomes for black children with high risk acute lymphoblastic leukemia and the impact of socioeconomic variables.

BACKGROUND: While significant improvements have been made for children with acute lymphoblastic leukemia (ALL) in the United States over the past 20 years, black patients continue to have inferior outcomes. The full impact of socioeconomic variables on outcomes in this minority population is not entirely understood. PROCEDURE: Disease characteristics, demographic, and socioeconomic status (SES) variables were collected on black (n = 44) and white (n = 178) patients diagnosed at the University of Alabama at Birmingham. Cox proportional hazard regression was used to evaluate the influence of SES and insurance status on survival. RESULTS: As a cohort, 5-year overall survival (OS) was 87% (82-91%), with a median follow-up of 99 months. In univariable analysis, black race was not significantly associated with a higher risk of death or relapse and death. White and black patients with standard-risk leukemia had excellent outcomes, with 97% (91-99%) and 96% (75-99%) 5-year OS, respectively. In contrast, for high-risk disease, white patients had a statistically significant improved 5-year OS rates compared with black patients (79% [68-87%] vs. 52% [28-72%]). Black children were more likely to have public insurance, and, in multivariable analysis, this was associated with a trend toward an improved outcome. Black patients also had poorer census tract-level SES parameters, but these variables were not associated with survival. CONCLUSION: Our study demonstrates significantly inferior outcomes for black children with high-risk leukemia. These outcome disparities were not related to SES variables, including poverty or private insurance coverage, suggesting the involvement of other factors and highlighting the need for a prospective investigative analysis.

Psychosocial Assessment as a Standard of Care in Pediatric Cancer.

This paper presents the evidence for a standard of care for psychosocial assessment in pediatric cancer. An interdisciplinary group of investigators utilized EBSCO, PubMed, PsycINFO, Ovid, and Google Scholar search databases, focusing on five areas: youth/family psychosocial adjustment, family resources, family/social support, previous history/premorbid functioning, and family structure/function. Descriptive quantitative studies, systematic reviews, and meta-analyses (n = 149) were reviewed and evaluated using grading of recommendations, assessment development, and evaluation (GRADE) criteria. There is high quality evidence to support a strong recommendation for multifaceted, systematic assessments of psychosocial health care needs of youth with cancer and their families as a standard of care in pediatric oncology.

Spiritual coping and adjustment in adolescents with chronic illness: a 2-year prospective study.

OBJECTIVE: Examine longitudinal relationships between spiritual coping and psychological adjustment among adolescents with chronic illness. METHODS: Adolescents (N = 128; M = 14.7 years) with cystic fibrosis or diabetes completed measures of spiritual coping and adjustment at 2 time points ∼2 years apart; parents also reported on adolescent adjustment. Prospective relationships between spiritual coping and adjustment were evaluated with an autoregressive cross-lagged path model. RESULTS: Positive spiritual coping predicted fewer symptoms of depression and less negative spiritual coping over time, whereas negative spiritual coping predicted more positive spiritual coping. Depressive symptoms predicted higher levels of negative spiritual coping and conduct problems over time. The results did not vary by disease. CONCLUSIONS: Positive spiritual coping may buffer adolescent patients from developing depression and maladaptive coping strategies. Results also highlight the harmful role of depression in subsequent behavior difficulties and maladaptive coping. Addressing spiritual beliefs and depressive symptoms in pediatric medical care is warranted.

Social skills and executive function among youth with sickle cell disease: a preliminary investigation.

OBJECTIVES: To explore the relationship between executive function (EF) and social skills in youth with sickle cell disease (SCD). METHODS: 20 youth with SCD completed objective tests of EF (Tasks of Executive Control; Animal Sorting subtest from the Developmental Neuropsychological Assessment-Second Edition), an IQ screener, and paper-and-pencil measures of social skills (Social Skills Improvement System [SSIS]). Primary caregivers completed paper-and-pencil measures of EF (Behavior Rating Inventory of Executive Function) and social skills (SSIS). RESULTS: EF scores from the Behavior Rating Inventory of Executive Function related to parent- and child-reported social skills such that EF deficits correlated with poorer overall and domain-specific social skills. Similarly, EF scores from the Animal Sorting test related to child-reported social skills. Worse parent-reported EF predicted worse parent-reported social skills above the variance accounted for by IQ. CONCLUSIONS: EF is related to social skills and may be necessary for successful social interaction among youth with SCD. These results provide rationale and guidance for future larger-scale investigations of EF and social skills among children with SCD.

Cognitive influences as mediators of family and peer support for pediatric cancer survivors' physical activity.

OBJECTIVE: The objective of this study was to determine the extent to which self-efficacy mediates the relations between social support and childhood cancer survivors' physical activity (PA). METHODS: A structured telephone survey was conducted with 105 childhood cancer survivors aged 8-16 years. Participants completed measures assessing their PA as well as proposed predictors of PA including various demographic, medical, cognitive, and social influences. Multiple mediation analyses were utilized to evaluate the relations between social support, cognitive influences, and survivor PA. RESULTS: Cognitive influences, including perceived benefits, barriers, and self-efficacy for PA, partially mediated the influence of family and peer support on survivor PA. Self-efficacy emerged as a significant unique mediator, indicating that higher levels of family and peer support are associated with higher levels of survivor PA via increases in survivor self-efficacy. CONCLUSIONS: Social support has both direct and indirect influences on survivor PA. Indirectly, social support influences PA via survivor self-efficacy. Interventions should target family and peer support as well as self-efficacy to increase survivor PA.

Physician perceptions and beliefs of phase I trials in pediatric oncology.

The identification and referral of candidate patients for phase I trials relies heavily on pediatric oncologists who must balance their own perceptions of phase I trials with the desires of the patient and his/her family. A survey was sent to 419 physicians practicing pediatric oncology at 30 different institutions. Results indicated significant differences between physicians who practiced at institutions that participated in phase I consortia versus those who did not. The findings of the survey may be used to enhance the design and execution of phase I trials and to educate oncologists about the goals of phase I trials.

An fMRI investigation of working memory and its relationship with cardiorespiratory fitness in pediatric posterior fossa tumor survivors who received cranial radiation therapy.

BACKGROUND: The present study investigated the relationship between cardiorespiratory fitness and executive functioning in pediatric brain tumor survivors who received cranial radiation. This population is known to show executive dysfunction and lower rates of aerobic exercise compared to peers. PROCEDURE: Nine adolescent survivors of pediatric posterior fossa tumor completed an n-back working memory task during a functional MRI scan, as well as cardiorespiratory fitness testing on a cycle ergometer. RESULTS: Neuroimaging findings indicated typical activation patterns associated with working memory, mainly in the frontal-parietal network. Higher cardiorespiratory fitness was related to better performance on a behavioral measure of working memory and more efficient neural functioning. CONCLUSIONS: This study provides preliminary evidence that cardiorespiratory fitness may be related to executive functioning, particularly working memory, in pediatric brain tumor survivors. Descriptions of the brain regions recruited for working memory by pediatric brain tumor survivors may be used to inform future interventions or indicators of treatment efficacy.

Harvest for health gardening intervention feasibility study in cancer survivors.

BACKGROUND: Cancer survivors are at increased risk for second malignancies, cardiovascular disease, diabetes, and functional decline. Evidence suggests that a healthful diet and physical activity may reduce the risk of chronic disease and improve health in this population. METHODS: We conducted a feasibility study to evaluate a vegetable gardening intervention that paired 12 adult and child cancer survivors with Master Gardeners to explore effects on fruit and vegetable intake, physical activity, quality-of-life, and physical function. Throughout the year-long study period, the survivor-Master Gardener dyads worked together to plan/plant three gardens, harvest/rotate plantings, and troubleshoot/correct problems. Data on diet, physical activity, and quality-of-life were collected via surveys; anthropometrics and physical function were objectively measured. Acceptability of the intervention was assessed with a structured debriefing survey. RESULTS: The gardening intervention was feasible (robust enrollment; minimal attrition) and well-received by cancer survivors and Master Gardeners. Improvement in three of four objective measures of strength, agility, and endurance was observed in 90% of survivors, with the following change scores [median (interquartile range)] noted between baseline and one-year follow-up: hand grip test [+ 4.8 (3.0, 6.7) kg], 2.44 meter Get-Up-and-Go [+ 1.0 (+ 1.8, + 0.2) seconds], 30-second chair stand [+ 3.0 (+ 1.0, 5.0) stands], and six-minute walk [+ 11.6 (6.1, 48.8) meters]. Increases of ≥ 1 fruit and vegetable serving/day and ≥ 30 minutes/week of physical activity were observed in 40% and 60%, respectively. CONCLUSION: These preliminary results support the feasibility and acceptability of a mentored gardening intervention and suggest that it may offer a novel and promising strategy to improve fruit and vegetable consumption, physical activity, and physical function in cancer survivors. A larger randomized controlled trial is needed to confirm our results.

A Structured Discharge Education Intervention for Parents of Newly Diagnosed Pediatric Oncology Patients.

Background: Parents of children newly diagnosed with cancer require specialized knowledge and skills in order to safely care for their children at home. The Children's Oncology Group (COG) developed expert consensus recommendations to guide new diagnosis education; however, these recommendations have not been empirically tested. Methods: We used a sequential two-cohort study design to test a nurse-led Structured Discharge Teaching Intervention (SDTI) that operationalizes the COG expert recommendations in the setting of a tertiary children's hospital. Outcomes included parent Readiness for Hospital Discharge Scale (RHDS); Quality of Discharge Teaching Scale (QDTS); Post-Discharge Coping Difficulty (PDCD); Nurse Satisfaction; and post-discharge unplanned healthcare utilization. Results: The process for discharge education changed significantly before and after implementation of the SDTI, with significantly fewer instances of one-day discharge teaching, and higher involvement of staff nurses in teaching. Overall, parental RHDS, QDTS, and PDCD scores were similar in the unintervened and intervened cohorts. Almost 60% of patients had unplanned healthcare encounters during the first 30 days following their initial hospital discharge. Overall nurse satisfaction with the quality and process of discharge education significantly increased post-intervention. Discussion: Although the structure for and process of delivering discharge education changed significantly with implementation of the SDTI, parent RHDS and QDTS scores remained uniformly high and PDCD scores and non-preventable unplanned healthcare utilization remained similar, while nurse satisfaction with the quality and process of discharge education significantly improved, suggesting that further testing of the SDTI across diverse pediatric oncology settings is warranted.

Pediatric oncologists' practices of prescribing selective serotonin reuptake inhibitors (SSRIs) for children and adolescents with cancer: a multi-site study.

OBJECTIVE: To survey pediatric oncologists regarding prescription of selective serotonin reuptake inhibitors (SSRIs) and related medications for the treatment of depression and anxiety disorders in children with cancer. Specifically, we sought to determine (a) how frequently pediatric oncologists prescribed SSRIs and what were the most commonly prescribed agents; (b) how decisions were made to prescribe, particularly whether mental health professionals were consulted; (c) how patients were monitored while on the agents; and (d) how the FDA black box warning has affected prescribing practices. METHOD: Oncologists from nine children's cancer centers (N = 151) from across the U.S. were surveyed, responding to either on-line or paper versions of a questionnaire developed for this study. RESULTS: A majority of oncologists (71%) reported prescribing SSRIs for their patients. Oncologists reported difficulties differentiating symptoms of depression from aspects of cancer treatment. Mental health practitioners are consulted occasionally but not routinely, and oncologists reported a need for increased mental health resources. Approximately half of oncologists (51%) reported that the FDA black box warning had not affected their practice. In addition, only 28% reported monitoring patients on SSRIs at FDA recommended intervals, and only 9% indicated assessing for suicidality. CONCLUSIONS: Prescription of SSRIs is a common practice of pediatric oncologists, often without consultation with mental health professionals. Post-prescription monitoring appears to be suboptimal, and does not follow FDA guidelines.

Cardiorespiratory fitness in survivors of pediatric posterior fossa tumor.

Advances in medical therapies have greatly improved survivorship rates in children diagnosed with brain tumor; as a result, morbidities associated with survivorship have become increasingly important to identify and address. In general, pediatric posterior fossa tumor survivors tend to be less physically active than peers. This may be related to late effects of diagnosis and treatment, including cardiovascular, endocrine, psychological, and neurocognitive difficulties. Exercise has been shown to be effective in improving physical functioning, mood, and even cognitive functioning. Consequently, the benefits of physical exercise need to be explored and incorporated into the daily lives of pediatric posterior fossa tumor survivors. The primary aim of the present study was to establish the feasibility and safety of cardiorespiratory fitness testing in pediatric posterior fossa tumor survivors who had received cranial radiation therapy. In addition, comparing our cohort with previously published data, we found that pediatric posterior fossa tumor survivors tended to be less fit than children with pulmonary disease and healthy controls and approximately as fit as children with chronic heart disease and survivors of other types of childhood cancer. The importance of cardiorespiratory fitness in pediatric posterior fossa tumor survivors is discussed along with implications for future directions.

Social, demographic, and medical influences on physical activity in child and adolescent cancer survivors.

OBJECTIVE: This study evaluated associations between social, environmental, demographic, and medical predictors, and child and adolescent survivors' physical activity (PA). METHODS: A structured telephone survey was conducted with 105 caregiver-survivor (aged 8-16 years) pairs and 36 caregivers of younger survivors (aged 6-7 years) alone. Participants completed measures assessing survivor PA and proposed predictors of PA including demographic, medical, social, and environmental influences. RESULTS: Social influences, including family PA, family support for PA, and peer support for PA, emerged as unique predictors of survivor PA. These variables predicted PA after controlling for demographic and medical factors. Child survivors' PA was more strongly predicted by family influences while adolescent survivors' PA was more strongly influenced by family and peer influences. CONCLUSIONS: Child and adolescent survivors' PA is strongly influenced by social factors. This finding parallels results with healthy children. PA interventions should focus on family and peer support to increase survivors' PA behaviors.