Proton therapy and limited surgery for paediatric and adolescent patients with craniopharyngioma (RT2CR): a single-arm, phase 2 study.

BACKGROUND: Compared with photon therapy, proton therapy reduces exposure of normal brain tissue in patients with craniopharyngioma, which might reduce cognitive deficits associated with radiotherapy. Because there are known physical differences between the two methods of radiotherapy, we aimed to estimate progression-free survival and overall survival distributions for paediatric and adolescent patients with craniopharyngioma treated with limited surgery and proton therapy, while monitoring for excessive CNS toxicity. METHODS: In this single-arm, phase 2 study, patients with craniopharyngioma at St Jude Children's Research Hospital (Memphis TN, USA) and University of Florida Health Proton Therapy Institute (Jacksonville, FL, USA) were recruited. Patients were eligible if they were aged 0-21 years at the time of enrolment and had not been treated with previous radiotherapeutic or intracystic therapies. Eligible patients were treated using passively scattered proton beams, 54 Gy (relative biological effect), and a 0·5 cm clinical target volume margin. Surgical treatment was individualised before proton therapy and included no surgery, single procedures with catheter and Ommaya reservoir placement through a burr hole or craniotomy, endoscopic resection, trans-sphenoidal resection, craniotomy, or multiple procedure types. After completing treatment, patients were evaluated clinically and by neuroimaging for tumour progression and evidence of necrosis, vasculopathy, permanent neurological deficits, vision loss, and endocrinopathy. Neurocognitive tests were administered at baseline and once a year for 5 years. Outcomes were compared with a historical cohort treated with surgery and photon therapy. The coprimary endpoints were progression-free survival and overall survival. Progression was defined as an increase in tumour dimensions on successive imaging evaluations more than 2 years after treatment. Survival and safety were also assessed in all patients who received photon therapy and limited surgery. This study is registered with ClinicalTrials.gov, NCT01419067. FINDINGS: Between Aug 22, 2011, and Jan 19, 2016, 94 patients were enrolled and treated with surgery and proton therapy, of whom 49 (52%) were female, 45 (48%) were male, 62 (66%) were White, 16 (17%) were Black, two (2%) were Asian, and 14 (15%) were other races, and median age was 9·39 years (IQR 6·39-13·38) at the time of radiotherapy. As of data cutoff (Feb 2, 2022), median follow-up was 7·52 years (IQR 6·28-8·53) for patients who did not have progression and 7·62 years (IQR 6·48-8·54) for the full cohort of 94 patients. 3-year progression-free survival was 96·8% (95% CI 90·4-99·0; p=0·89), with progression occurring in three of 94 patients. No deaths occurred at 3 years, such that overall survival was 100%. At 5 years, necrosis had occurred in two (2%) of 94 patients, severe vasculopathy in four (4%), and permanent neurological conditions in three (3%); decline in vision from normal to abnormal occurred in four (7%) of 54 patients with normal vision at baseline. The most common grade 3-4 adverse events were headache (six [6%] of 94 patients), seizure (five [5%]), and vascular disorders (six [6%]). No deaths occurred as of data cutoff. INTERPRETATION: Proton therapy did not improve survival outcomes in paediatric and adolescent patients with craniopharyngioma compared with a historical cohort, and severe complication rates were similar. However, cognitive outcomes with proton therapy were improved over photon therapy. Children and adolescents treated for craniopharyngioma using limited surgery and post-operative proton therapy have a high rate of tumour control and low rate of severe complications. The outcomes achieved with this treatment represent a new benchmark to which other regimens can be compared. FUNDING: American Lebanese Syrian Associated Charities, American Cancer Society, the US National Cancer Institute, and Research to Prevent Blindness.

Factors that distinguish symptoms of most concern to parents from other symptoms of dying children.

In a previous study, we conducted telephone interviews with parents 6 to 10 months after their child's death from cancer, using open-ended questions to identify the type and frequency of cancer-related symptoms that most concerned them during the last week of their child's life. Because the parents identified many clinically striking symptoms (n=109) that were not of most concern to them, we conducted a secondary analysis of these interviews (48 mothers and four fathers of 52 patients) to identify descriptive factors associated with the parents' level of concern. Six descriptive factors were associated with symptoms of most concern and 10 factors with symptoms not of most concern. Ten of these 16 factors occurred in both categories, indicating that clinicians should directly query parents to identify the symptoms that concern parents the most. Six factors differed between the two categories, and only one (the continuous distress caused by a symptom that is unrelieved) was unique to the category of symptoms of most concern. Five factors (symptom present for at least one week, symptom not seen as remarkable by the parent or causing no distress to the child, symptom well managed, symptom improved, and symptoms for which the parent felt adequately prepared) were unique to the category of symptoms not of most concern. By inquiring about symptoms of most concern and factors that influence parental concern, clinicians may be better able to direct care efforts to reduce patients' and parents' distress and support parents during the difficult end-of-life period.

Race does not influence do-not-resuscitate status or the number or timing of end-of-life care discussions at a pediatric oncology referral center.

BACKGROUND: End-of-life care (EOLC) discussions and decisions are common in pediatric oncology. Interracial differences have been identified in adult EOLC preferences, but the relation of race to EOLC in pediatric oncology has not been reported. We assessed whether race (white, black) was associated with the frequency of do-not-resuscitate (DNR) orders, the number and timing of EOLC discussions, or the timing of EOLC decisions among patients treated at our institution who died. METHODS: We reviewed the records of 380 patients who died between July 1, 2001 and February 28, 2005. Chi(2) and Wilcoxon rank-sum tests were used to test the association of race with the number and timing of EOLC discussions, the number of DNR changes, the timing of EOLC decisions (i.e., DNR order, hospice referral), and the presence of a DNR order at the time of death. These analyses were limited to the 345 patients who self-identified as black or white. RESULTS: We found no association between race and DNR status at the time of death (p = 0.57), the proportion of patients with DNR order changes (p = 0.82), the median time from DNR order to death (p = 0.51), the time from first EOLC discussion to DNR order (p = 0.12), the time from first EOLC discussion to death (p = 0.33), the proportion of patients who enrolled in hospice (p = 0.64), the time from hospice enrollment to death (p = 0.2) or the number of EOLC discussions before a DNR decision (p = 0.48). CONCLUSION: When equal access to specialized pediatric cancer care is provided, race is not a significant factor in the presence or timing of a DNR order, enrollment in or timing of enrollment in hospice, or the number or timing of EOLC discussions before death.

Conducting end-of-life studies in pediatric oncology.

Improving our ability to prevent or diminish suffering in dying children and adolescents and their families is dependent on the completion of high-quality pediatric end-of-life studies. The purpose of this article is to provide useful evidence-based strategies that have been used to implement and complete clinically useful pediatric end-of-life studies in oncology. The article describes specific peer-review and methodological challenges and links those to evidence-based solutions. The challenges and solutions described in this article are from eight end-of-life studies involving pediatric oncology patients. It is hoped that the solutions described here will benefit others in their efforts to implement pediatric end-of-life studies so that clinically useful findings will result and will improve the care of dying children and adolescents.

The Health Utilities Index 3 invalidated when completed by nurses for pediatric oncology patients.

When health-related quality of life instruments developed for and validated in 1 respondent group are completed by a different respondent group, findings could be invalid. The purpose of this study was to summarize the instrument outcomes when a widely used health-related quality of life instrument (the Health Utilities Index 3 [HUI3]) created from a population-based strategy was completed by pediatric oncology nurses for their patients during cancer treatment. Fifty-four nurses completed the HUI3 a total of 261 times at 1 to 3 sequential data points (106, 94, and 61, respectively) for pediatric patients who were enrolled on a frontline therapeutic clinical trial for acute lymphoblastic leukemia. Data were collected at 2 children's hospitals. HUI3 scores could not be calculated for 52% to 61% of the nurse reports at each of the 3 data points because of nurses' use of the "do not know" response option. Missing data of this proportion indicate that the nurse serving as a proxy rater independent of directly soliciting responses from the patient will not be able to rate certain attributes of the HUI3 more than half of the time despite having ongoing familiarity with the patient. Because of this, use of the HUI3 by nurse proxies for patients with pediatric acute lymphoblastic leukemia is not recommended.

Advances in defining, conceptualizing, and measuring quality of life in pediatric patients with cancer.

PURPOSE/OBJECTIVES: To describe the notable advances in defining, conceptualizing, and measuring quality of life (QOL) in pediatric patients with cancer since the 1995 Oncology Nursing Society's State-of-the-Knowledge Conference on QOL. DATA SOURCES: Published research, clinical papers, and hospital policies. DATA SYNTHESIS: QOL ratings from children and adolescents are being solicited increasingly in research and clinical assessments during treatment and survivorship using various methods but are not solicited from terminally ill patients; qualitatively induced models of pediatric cancer-related QOL now are being tested using quantitative methods. CONCLUSIONS: Children aged five years and older are able to report their cancer-related QOL; reliable and valid QOL instruments exist for all phases of treatment except end of life. IMPLICATIONS FOR NURSING: Nurses can involve children and adolescents in rating their QOL for research and clinical purposes and can apply theory-based QOL models to direct care.