Symptom Biomarkers for Children Receiving Treatment for Cancer: State of the Science

Exploring Inflammation and Stress as Biological Correlates of Symptoms in Children With Advanced Cancer: A Longitudinal Feasibility Study

Background: Few studies have examined biomarkers of stress and inflammation as underlying mechanisms of symptoms in adolescents and young adults with cancer. This study determined the feasibility of collecting blood and saliva samples across time, described the range and distribution of biomarkers, and explored the association of biomarkers with symptom adverse events (AEs). Method: This longitudinal, prospective repeated-measures single-site feasibility study recruited N  =  10 children (M = 12.5 years) receiving treatment for advanced cancer. Symptom AE data and inflammation (cytokines and C-reactive protein) and physiologic response to stress (salivary cortisol and salivary alpha-amylase) biomarker levels were collected at three time points. Descriptive statistics were used to examine feasibility and acceptability and to summarize symptom AE, stress, and inflammatory biomarker data. A linear regression model was used to determine cortisol diurnal slopes. The relationship between symptom and inflammatory biomarker data was explored and Hedges's g statistic was used to determine its effect size. Results: Participants provided 83% of saliva samples (n  =  199/240) and 185 samples were sufficient to be analyzed. Nurses collected 97% (n  =  29/30) of blood samples. Participants reported the saliva collection instructions, kits, and reminders were clear and helpful. Insomnia, pain, fatigue, and anxiety demonstrated the most medium and large negative effects with inflammatory markers. Symptom AEs demonstrated the highest number of medium and large negative effects with interleukin-8 and tumor necrosis factor-alpha (-0.53 to -2.00). Discussion: The results indicate longitudinal concurrent collection of symptom and biomarker data is feasible and inflammatory and stress biomarkers merit consideration for inclusion in future studies.

Symptoms, Physical Activity, and Biomarkers in Children at the End of Leukemia Maintenance Therapy

Background: Symptoms in children with acute lymphocytic leukemia (ALL) change over the trajectory of treatment but little is known about their symptoms as treatment ends. Physical activity may help decrease symptom distress and is vital for ongoing development. The role of biomarkers in symptom science is emerging. The purpose of the study was to explore relationships between self-report of symptoms and physical activity, actigraphy measures, and cerebrospinal fluid (CSF) biomarkers. Methods: Participants were children who were ages 3 to 18 years at the time of ALL diagnosis and were now in the last 12-week cycle of ALL maintenance. Self-reports of fatigue, sleep disturbance, depressive symptoms, and physical activity were completed by participants and parents of younger children. Participants wore a wrist actigraph continuously for the 7 days before other measurements. F2-isoprostanes and interleukin-8 were evaluated in CSF samples. Results: Among the 15 participants, self-report of symptoms and physical activity indicated levels similar to healthy peers. F2-isoprostane had a strong positive correlation with fatigue levels and with depressive symptoms. Fatigue, sleep disturbance, and depressive symptoms positively correlated with each other. Actigraph measures showed children met the CDC guidelines for 60 min of daily moderate to vigorous activity; sleep time was slightly less than healthy norms. Discussion: During maintenance therapy, most children return to healthy norms in symptom burden and physical activity. F2-isoprostane in the CSF is a biomarker for fatigue and depressive symptoms. Children who had persistent symptoms experienced them as a cluster, which confirms previous symptom cluster research.

Children's Oncology Group 2023 blueprint: Nursing discipline

In contrast to other Children's Oncology Group (COG) committees, the COG nursing discipline is unique in that it provides the infrastructure necessary for nurses to support COG clinical trials and implements a research agenda aimed at scientific discovery. This hybrid focus of the discipline reflects the varied roles and expertise within pediatric oncology clinical trials nursing that encompass clinical care, leadership, and research. Nurses are broadly represented across COG disease, domain, and administrative committees, and are assigned to all clinically focused protocols. Equally important is the provision of clinical trials-specific education and training for nurses caring for patients on COG trials. Nurses involved in the discipline's evidence-based practice initiative have published a wide array of systematic reviews on topics of clinical importance to the discipline. Nurses also develop and lead research studies within COG, including stand-alone studies and aims embedded in disease/ treatment trials. Additionally, the nursing discipline is charged with responsibility for developing patient/family educational resources within COG. Looking to the future, the nursing discipline will continue to support COG clinical trials through a multifaceted approach, with a particular focus on patient-reported outcomes and health equity/disparities, and development of interventions to better understand and address illness-related distress in children with cancer.

Antiracist symptom science: A call to action and path forward

Nurse scientists recognize the experience of racism as a driving force behind health. However, symptom science, a pillar of nursing, has rarely considered contributions of racism. Our objective is to describe findings within symptom science research related to racial disparities and/or experiences of racism and to promote antiracist symptom science within nursing research. In this manuscript, we use an antiracist lens to review a predominant symptom science theory and literature in three areas of symptom science research-oncology, mental health, and perinatal health. Finally, we make recommendations for increasing antiracist research in symptom science by altering (a) research questions, (b) recruitment methods, (c) study design, (d) data analysis, and (e) dissemination of findings. Traditionally, symptom science focuses on individual level factors rather than broader contexts driving symptom experience and management. We urge symptom science researchers to embrace antiracism by designing research with the specific intent of dismantling racism at multiple levels.

A Review of Patient-Reported Outcome Measures in Childhood Cancer

Patient-reported outcomes (PROs) are used in clinical work and research to capture the subjective experiences of childhood cancer patients and survivors. PROs encompass content domains relevant and important to this population, including health-related quality-of-life (HRQOL), symptoms, and functional status. To inform future efforts in the application of PRO measures, this review describes the existing generic and cancer-specific PRO measures for pediatric cancer populations and summarizes their characteristics, available language translations, content coverage, and measurement properties into tables for clinicians and researchers to reference before choosing a PRO measure that suits their purpose. We have identified often unreported measurement properties that could provide evidence about the clinical utility of the PRO measures. Routine PRO assessment in pediatric cancer care offers opportunities to facilitate clinical decision-making and improve quality of care for these patients. However, we suggest that before implementing PRO measures into research or clinical care, the psychometric properties and content coverage of the PRO measures must be considered to ensure that PRO measures are appropriately assessing the intended construct in childhood cancer patients.

A Scoping Review of Biological Pathways of Integrative Interventions Used to Manage Chemotherapy-Induced Nausea and Vomiting in Children With Cancer

BACKGROUND

As with pharmacological management approaches, characteristics of complementary and alternative medicine (CAM) interventions for managing chemotherapy-induced nausea and vomiting (CINV) in children with cancer should be considered when developing and testing these interventions and reporting the outcomes.

OBJECTIVES

This systematic scoping review aimed to identify gaps and weaknesses in CAM and integrative interventions studies to prevent and manage CINV in children being treated for cancer, according to the CINV biological pathways.

METHODS

This systematic scoping review was conducted under the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews guideline. Included studies were published in English before May 2020 and examined the effects of integrative interventions on CINV in children being treated for cancer. Two authors performed computerized searches and manual reviews; these authors also extracted data about study characteristics, intervention characteristics, and CINV outcomes from the studies included in the review.

RESULTS

Twenty-six studies of 29 CAM interventions met eligibility criteria. Most of these studies used randomized controlled trial designs and measured CINV outcomes at least once prior to and then after the intervention. Some studies did not explicate the interval between exposure to the intervention and outcome measurements. The CAM interventions studied included 15 cognitive-behavioral interventions, 8 acupoint stimulation interventions, 5 herb/supplementation interventions, and 1 educational intervention. One study tested two CAMs and clarified the underlying biological pathways, whereas 25 studies (27 CAMs) did not illustrate pathways; the pathways were deduced from information provided in the articles.

DISCUSSION

Considering the biological pathways underlying CINV while developing integrative interventions, including the CAM component, could improve intervention efficacy. Measurement of biomarkers of activity in these pathways would provide a means to test whether changes in underlying pathways mediate change in CINV. Better reporting of intervention details and study processes is needed to support replication of CAM interventions and inform translation into clinical practice.

The Symptom Experience in Pediatric Cancer: Current Conceptualizations and Future Directions

PURPOSE OF REVIEW

We aimed to review the recent research on the childhood cancer symptom experience pertaining to socioeconomic factors, biology and genetics, growth and development, family psychosocial dynamics, and social and treating environments to begin to formulate recommendations for a personalized approach to symptom management.

RECENT FINDINGS

Cancer symptoms are common and distressing in children and negatively impact child and family quality of life. Many interacting factors influence children's cancer symptoms experiences, including the assessment and management of such symptoms. This paper highlights several gaps in the research related to the cancer symptom experience including routine symptom assessment, the impact of socioeconomic, biological, and genetic factors on symptoms, and the establishment of effective symptom management partnerships with families. Based on our findings, we provide recommendations related to that research which is ready to be implemented into clinical practice and areas for needed future efforts.

Biomarkers and Cognitive Function in Children and Adolescents During Maintenance Therapy for Leukemia

OBJECTIVES

To explore the relationship between biomarkers of oxidative stress and inflmmation in cerebrospinal fluid (CSF) and cognitive function in children receiving maintenance therapy for acute lymphocytic leukemia (ALL).

SAMPLE & SETTING

30 participants aged 4-17 years receiving ALL maintenance therapy at two pediatric cancer centers in the United States.

METHODS & VARIABLES

F2-isoprostane (F2-ISoP) and interleukin-8 (IL-8) were evaluated in CSF samples, and cognitive function measures were completed during the first and last cycles of ALL maintenance. The Flanker Inhibitory Control and Attention Test (Flanker) and Dimensional Change Card Sort were completed during the last cycle.

RESULTS

During maintenance therapy, IL-8 decreased, and parent reports of children's cognitive function improved. Higher IL-8 was associated with better parent reports of children's cognitive function at each timepoint. Higher F2-ISoP levels were associated with lower Flanker scores.

IMPLICATIONS FOR NURSING

F2-ISoP may be a useful biomarker in evaluating cognitive dysfunction in children with ALL and merits further investigation.

Building capacity through integration of advanced practice nurses in research

BACKGROUND

Advanced practice nurses (APNs) are well-positioned to function in research settings, however barriers to their engagement persist. Capacity-building through multisite research opportunities is an important strategy to overcome these barriers.

PURPOSE

To describe the benefits and challenges of incorporating APNs in research and discuss opportunities for building capacity for nursing research.

METHOD

Grounded in the experience of a nurse-led multisite longitudinal observational descriptive symptom study, field notes representing the research continuum were reviewed and categorized into themes reflecting benefits and challenges.

FINDINGS

Uniform benefits of acquiring research knowledge and skills, participating in research activities, and engaging in professional development were experienced among APNs. Limited support for regulatory and research activities, inadequate financial infrastructure, and a perceived lack of value for APNs' professional growth were commonly encountered challenges.

DISCUSSION

Establishment of an infrastructure that elevates benefits and mitigates challenges is necessary to effectively incorporate APNs in a research environment, build capacity, and advance nursing science.

Comparison of child self-report and parent proxy-report of symptoms: Results from a longitudinal symptom assessment study of children with advanced cancer

PURPOSE

This report represents a subanalysis of data from a primary study and addresses a gap in understanding the similarities and differences of symptom reporting between children with advanced cancer and their parents. The objectives of this subanalysis were to (1) compare reports of symptom prevalence, symptom burden, and symptom frequency, severity, and distress between groups of children and adolescents and their parents, and (2) describe concordance of symptom reports within individual child-parent dyads.

DESIGN AND METHODS

Forty-six children with relapsed, refractory, or progressive cancer and their parents from five pediatric cancer centers prospectively reported symptoms every 2 weeks for up to 61 weeks. The abbreviated Pediatric Quality of Life and Evaluation of Symptoms Technology-Memorial Symptom Assessment Scales were used to measure symptom prevalence, frequency, severity, and distress.

RESULTS

Children and parents reported pain, fatigue, nausea, and sleeping difficulties as the most frequently occurring symptoms. With the exception of shortness of breath, parents reported symptom prevalence more often than children. The differences in parent reports were statistically significant for fatigue, nausea, lack of appetite, feeling nervous, and sadness. Parents reported higher symptom burden scores compared to children for all individual symptoms except shortness of breath. Children reported higher scores for 19 of 32 possible symptom frequency, severity, and distress ratings. Children's scores were higher for frequency and severity, while parents' scores were higher for distress. Sleeping difficulties, pain, nausea, and diarrhea demonstrated the highest concordance, while feeling nervous, sadness, irritability, and fatigue yielded the lowest concordance between children's and parents' symptom reports.

PRACTICE IMPLICATIONS

Eliciting the symptom experience from the child, when appropriate, rather than a parent proxy is best practice given evidence supporting the overestimation of symptom prevalence by parents and underestimation of symptom frequency and severity for some symptoms. When proxy raters must be used, pediatric nurses should educate proxy raters regarding symptom assessment, and assess and tend to symptoms that may not exhibit visual cues. Pediatric nurses should conduct a comprehensive symptom assessment and evaluate beyond the presence of symptoms and include an assessment of frequency, severity, and distress for physical and psychological symptoms to optimize symptom management strategies.

Consensus Recommendations From the Children's Oncology Group Nursing Discipline's State of the Science Symposium: Symptom Assessment During Childhood Cancer Treatment

Background: Recognizing and addressing illness-related distress has long been a priority for pediatric oncology nurses and the Children's Oncology Group. Although symptoms are known to be highly prevalent during treatment for childhood cancer, there is currently no guidance for how often symptoms should be assessed, which symptoms should be prioritized for assessment, and how the data should be collected. Methods: The Nursing Discipline, within Children's Oncology Group, hosted a one-day Interprofessional seminar titled "Symptom Assessment During Childhood Cancer Treatment: State of the Science Symposium." Following the symposium, an expert panel was assembled to review all available evidence, including information presented and collected during the symposium. Consensus-building discussions were held to identify common themes and to produce recommendations for clinical practice. Results: Four recommendations emerged including (1) the identification of priority "core" symptoms for assessment; (2) inclusion of the child's voice through self-report, when possible; (3) consistent documentation and communication of symptom assessment results; and (4) implementation of patient/family education related to symptoms. Discussion: Symptom recognition, through appropriate assessment, is the first step in symptom management. The goal for developing and sharing these recommendations is to promote consistent and comparable clinical practice across institutions in regard to symptom assessment during childhood cancer therapy. Integration of these recommendations will set the stage for future studies related to the frequency of symptoms across disease groups, projection of anticipated symptom trajectories, development of evidence-based teaching tools for common symptoms, and evaluation of patient outcomes with enhanced symptom assessment and management.