Incidence, mortality and survival of childhood cancer in China during 2000–2010 period: A population-based study

Stability of Symptom Clusters in Children With Acute Lymphoblastic Leukemia Undergoing Chemotherapy

BACKGROUND

Children with acute lymphoblastic leukemia (ALL) experience multiple symptoms during chemotherapy. Assessing how symptoms cluster together and how these symptom clusters (SCs) change over time may lay a foundation for future research in SC management and the pathophysiological mechanisms of SCs.

OBJECTIVES

This study aimed to assess the stability of SCs in children with ALL during chemotherapy.

METHODS

A longitudinal investigation was carried out. The Chinese version of the Memorial Symptom Assessment Scale 10 to 18 was used to assess the occurrence, severity, and distress of symptoms in 134 children with ALL (8-16 years old) at the following 4 separate points: before chemotherapy (T1), start of post-induction therapy (T2), 4 months post-induction therapy (T3), and start of maintenance therapy (T4). Exploratory factor analyses were used to extract SCs.

RESULTS

Six SCs were identified. Emotional and somatic clusters were identified across all dimensions and time points. Gastrointestinal cluster was all identified except for occurrence at T1. Neurological cluster was identified at T2 and T3 for all dimensions and at T4 for severity and distress. Self-image disorder cluster was all identified except at T1. Skin mucosa cluster was identified at T2 and T3 for all dimensions. Emotional cluster exhibited common symptoms across dimensions and time points.

CONCLUSION

The number and types of SCs determined by scoring the occurrence, severity, and distress are different, but some SCs are relatively stable.

IMPLICATIONS FOR PRACTICE

Clinicians should not only focus on the common trajectory of symptoms and SCs, but also assess each child individually.

'I cannot accept it' distressing experiences in parents of children diagnosed with cancer: A qualitative study

AIMS

To explore the distressing experiences of Chinese parents of children with cancer from the perspective of psychological inflexibility.

DESIGN

A qualitative study using a descriptive qualitative approach based on the model of psychological inflexibility was adopted.

METHODS

Individual semi-structured interviews through synchronized online video were conducted with 21 Chinese parents of children with cancer from October 2020 to May 2021. Data were analysed using content analysis.

RESULTS

Four themes and 11 subthemes were identified: (i) immersion in struggling and suffering, (ii) avoidance and suppression, (iii) blaming and complaint and (iv) helplessness and worthlessness. Parents were unwilling to accept the diagnosis and witness their children's suffering, trapped in uncontrollable negative emotions and thoughts. Avoiding emotions and socializing, blaming themselves or complaining of injustice were common. They felt helpless towards life and valueless without the child.

CONCLUSION

The research findings provide additional perspectives in understanding the distressing experiences in parents of children with cancer. Overall, the emotional and coping styles indicated the lack of psychological flexibility of parents when facing childhood cancer, which is profoundly influenced by Chinese culture.

IMPLICATIONS FOR THE PROFESSION

Healthcare professionals are recommended to provide culturally sensitive strategies or interventions for building psychological flexibility in addressing parental psychological distress.

IMPACT

The study provides insights into exploring distressing experiences and reveals the inflexible psychological and behavioural patterns in parents of children with cancer, which could benefit healthcare providers in managing parental psychological distress and helping these parents build flexible coping strategies.

REPORTING METHOD

The COREQ guideline was followed.

PATIENT OR PUBLIC CONTRIBUTION

No patient or public involvement.

The mediating effect of positive expectations in the relationship between social support and post-traumatic stress disorder symptoms among parents of children with acute lymphoblastic leukemia

PURPOSE

Parents of children with cancer are exposed to risks of developing post-traumatic stress disorder (PTSD) symptoms, but few studies have explored PTSD symptoms of Chinese parents of children with acute lymphoblastic leukemia (ALL). Our study aimed to examine the association between social support and PTSD symptoms and to examine the mediating effect of positive expectations in this relationship among parents of children with ALL.

METHODS

A cross-sectional study was conducted of consecutive parents of children with ALL in the Shengjing Hospital of China Medical University. A total of 177 parents eligible for this study completed questionnaires on PTSD symptoms, perceived social support, optimism and general self-efficacy anonymously. Asymptotic and resampling strategies were used to examine how positive expectations mediated the association between perceived social support and PTSD symptoms.

RESULTS

Mean score of PTSD symptoms was 37.64 ± 14.44; 29.4% of the sample scored 44 and above, 19.8% scored 50 and above. After adjusting for covariates, perceived social support was negatively associated with the total score of PTSD symptoms (β = -0.209, p < 0.01). Positive expectations were found to mediate the relationship between perceived social support and PTSD symptoms, especially for the symptoms of avoidance and hyperarousal.

CONCLUSIONS

Optimism and general self-efficacy fully mediated the association between perceived social support and PTSD symptoms. Therefore, social support and positive expectations should be included in PTSD preventions and treatments targeting Chinese parents of children with ALL.

Symptom Clusters in Children With Leukemia Receiving Chemotherapy: A Scoping Review

BACKGROUND

Leukemia represents the most prevalent childhood malignancy. Understanding the symptom clusters (SCs) associated with leukemia may help develop an effective care plan for affected children.

OBJECTIVES

The aims of this study were to summarize the methods of identifying SCs; ascertain the types, attributes, and changing patterns of SCs during different chemotherapy phases; and provide a point of reference for the subsequent improvement of symptom management in pediatric leukemia.

METHODS

The methodological framework employed was the Joanna Briggs Institute Scoping Review Guide. A comprehensive search was conducted across various databases, including PubMed, EMBASE, CINAHL, Web of Science, MEDLINE, Scopus, and China National Knowledge Infrastructure from inception until July 15, 2023.

RESULTS

A total of 14 articles were included in this review, 6 in English and 8 in Chinese. The Memorial Symptom Assessment Scale 10-18 is the most commonly used instrument, whereas factor analysis is the most common statistical method for SC identification. The SCs were classified into 12 categories. The most severe SCs varied across different phases. Specifically, the emotional cluster dominated the prechemotherapy phase, the gastrointestinal cluster surfaced during postinduction therapy, and the consolidation and maintenance therapy phases revealed the self-image disorder cluster.

CONCLUSION

Various consistent and dynamic SCs manifest among pediatric patients with leukemia undergoing chemotherapy.

IMPLICATIONS FOR PRACTICE

Future research endeavors should formulate clear criteria to determine the stability and consistency of SCs, validate SC composition and characteristics, and devise precise symptom management protocols based on SC characteristics in the distinct chemotherapy phases.

Anticancer therapy-induced adverse drug reactions in children and preventive and control measures

In recent years, considerable achievements have been made in pediatric oncology with the innovation and development of antitumor drugs. However, compared to adults, children as a special group have not yet matured fully in terms of liver and kidney function. Moreover, pediatric patients are prone to more adverse drug reactions (ADRs) from the accumulation of antineoplastic drugs due to their smaller body size and larger body surface area. Chemotherapy-related ADRs have become a non-negligible factor that affects cancer remission. To date, studies on ADRs in pediatric cancer patients have emerged internationally, but few systematic summaries are available. Here, we reviewed the various systemic ADRs associated with antitumor drugs in children and adolescent patients, as well as the advances in strategies to cope with ADRs, which consisted of neurotoxicity, hematological toxicity, cardiotoxicity, ADRs of the respiratory system and gastrointestinal system and urinary system, ADRs of the skin and its adnexa, allergic reactions, and other ADRs. For clinicians and researchers, understanding the causes, symptoms, and coping strategies for ADRs caused by anticancer treatments will undoubtedly benefit more children.

Subjective Toxicity Profiles of Children With Cancer During Treatment: A Latent Class Analysis

BACKGROUND

Children and adolescents may experience a variety of subjective adverse events (AEs) caused by cancer treatment. The identification of distinct groups of patients is crucial for guiding symptomatic AE management interventions to prevent AEs from worsening.

OBJECTIVE

The aim of this study was to identify subgroups of children with cancer experiencing similar patterns of subjective toxicities and evaluate differences among these subgroups in demographic and clinical characteristics.

METHODS

A cross-sectional survey was conducted of 356 children in China with malignancies who received chemotherapy within the past 7 days using the pediatric Patient-Reported Outcomes version of the Common Terminology Criteria for Adverse Events. A latent class analysis (LCA) was conducted to identify subgroups of patients with distinct profiles of symptomatic AE occurrence.

RESULTS

Nausea (54.5%), anorexia (53.4%), and headache (39.3%) were the top 3 AEs children experienced. Nearly all participants (97.8%) experienced ≥1 core AEs, and 30.3% experienced ≥5 AEs. The LCA results identified 3 subgroups ("high gastrotoxicity and low neurotoxicity" [53.2%], "moderate gastrotoxicity and high neurotoxicity" [23.6%], and "high gastrotoxicity and high neurotoxicity" [22.8%]). The subgroups were differentiated by monthly family per-capita income, time since diagnosis, and Karnofsky Performance Status score.

CONCLUSIONS

Children experienced multiple subjective toxicities during chemotherapy, especially gastrotoxicity and neurotoxicity. Heterogeneity was found in the LCA in the patients' toxicities. The prevalence of toxicities could be distinguished by the children's characteristics.

IMPLICATIONS FOR PRACTICE

The results showing different subgroups in our study may assist clinical staff in focusing on patients with higher toxicities to provide effective interventions.

RTEL1 gene polymorphisms and neuroblastoma risk in Chinese children

BACKGROUND

Neuroblastoma, a neuroendocrine tumor originating from the sympathetic ganglia, is one of the most common malignancies in childhood. RTEL1 is critical in many fundamental cellular processes, such as DNA replication, DNA damage repair, genomic integrity, and telomere stability. Single nucleotide polymorphisms (SNPs) in the RTEL1 gene have been reported to confer susceptibility to multiple cancers, but their contributing roles in neuroblastoma remain unclear.

METHODS

We conducted a study on 402 neuroblastoma cases and 473 controls to assess the association between four RTEL1 SNPs (rs3761124 T>C, rs3848672 T>C, rs3208008 A>C and rs2297441 G>A) and neuroblastoma susceptibility.

RESULTS

Our results show that rs3848672 T>C is significantly associated with an increased risk of neuroblastoma [CC vs. TT/TC: adjusted odds ratio (OR)=1.39, 95% confidence interval (CI)=1.02-1.90, P=0.038]. The stratified analysis further indicated that boy carriers of the rs3848672 CC genotype had a higher risk of neuroblastoma, and all carriers had an increased risk of developing neuroblastoma of mediastinum origin. Moreover, the rs2297441 AA genotype increased neuroblastoma risk in girls and predisposed children to neuroblastoma arising from retroperitoneal.

CONCLUSION

Our study indicated that the rs3848672 CC and rs2297441 AA genotypes of the RTEL1 gene are significantly associated with an increased risk of neuroblastoma in Chinese children in a gender- and site-specific manner.

A scoring system based on fusion genes to predict treatment outcomes of the non-acute promyelocytic leukemia pediatric acute myeloid leukemia

Background

Fusion genes are considered to be one of the major drivers behind cancer initiation and progression. Meanwhile, non-acute promyelocytic leukemia (APL) pediatric patients with acute myeloid leukemia (AML) in children had limited treatment efficacy. Hence, we developed and validated a simple clinical scoring system for predicting outcomes in non-APL pediatric patients with AML.

Method

A total of 184 non-APL pediatric patients with AML who were admitted to our hospital and an independent dataset (318 patients) from the TARGET database were included. Least absolute shrinkage and selection operation (LASSO) and Cox regression analysis were used to identify prognostic factors. Then, a nomogram score was developed to predict the 1, 3, and 5 years overall survival (OS) based on their clinical characteristics and fusion genes. The accuracy of the nomogram score was determined by calibration curves and receiver operating characteristic (ROC) curves. Additionally, an internal verification cohort was used to assess its applicability.

Results

Based on Cox and LASSO regression analyses, a nomogram score was constructed using clinical characteristics and OS-related fusion genes (CBFβ::MYH11, RUNX1::RUNX1T1, KMT2A::ELL, and KMT2A::MLLT10), yielded good calibration and concordance for predicting OS of non-APL pediatric patients with AML. Furthermore, patients with higher scores exhibited worse outcomes. The nomogram score also demonstrated good discrimination and calibration in the whole cohort and internal validation. Furthermore, artificial neural networks demonstrated that this nomogram score exhibits good predictive performance.

Conclusion

Our model based on the fusion gene is a prognostic biomarker for non-APL pediatric patients with AML. The nomogram score can provide personalized prognosis prediction, thereby benefiting clinical decision-making.

Real-world vaccination status of children with hematologic tumors before and after chemotherapy

BACKGROUND

There is a high incidence and mortality rate in children with hematologic tumors (CHT), who are more prone to various infectious diseases. This study aims to clarify the real-world National Immunization Program (NIP) vaccination status of CHT before and after chemotherapy.

METHODS

Medical records, NIP vaccination data, and the Adverse Event Following Immunization (AEFI) of CHT who were admitted to the Children's Hospital, Zhejiang University School of Medicine from January 1, 2011 to December 1, 2021 were completely collected.

RESULTS

Total of 2,874 CHT were included and 1975 (68.7%) had vaccination records. Among the enrolled patients, the vaccination rate of all NIP vaccines was lower than 90% before diagnosis. Only 24.29% of CHT (410/1688) resumed vaccination after chemotherapy, and 69.02% (283/410) resumed vaccination more than 12 months after chemotherapy. No uncommon or serious side effects were reported.

CONCLUSION

The vaccination rate of CHT after chemotherapy was lower than that before the disease was diagnosed. It is necessary to provide more evidence-based support and formulate specific regimens to perfect the vaccination procedure after chemotherapy, so as to improve the quality of life of CHT.

Efficacy and safety of transarterial chemoembolization plus sorafenib in patients with recurrent hepatocellular carcinoma after liver transplantation

Objectives

To explore the benefit and safety of transarterial chemoembolization (TACE) in combination with sorafenib in patients with recurrent hepatocellular carcinoma (HCC) after orthotopic liver transplantation (OLT).

Methods

In this multi-center retrospective study, 106 patients with recurrent HCC after OLT were included. Fifty-two patients were treated with TACE plus sorafenib (TS group) and 54 were treated with TACE alone (TC group). Primary and secondary endpoints including overall survival (OS) and progression-free survival (PFS), and safety were assessed.

Results

The median OS (17 vs 10 months, P=0.035) and PFS (12 vs 6 months, P=0.004) in the TS group were longer than those in the TC group. On multivariate analysis, BCLC stage (HR [hazard ratio]=0.73 [95% CI, 0.27-0.99], P=0.036) and sorafenib medication (HR=2.26 [95% CI, 1.35-3.69], P=0.01) were identified as independent prognostic risk factors for OS. No severe adverse events related to sorafenib were noted in the TS group. Four patients discontinued sorafenib due to intolerance.

Conclusion

TACE in combination with sorafenib is a feasible regimen to improve the survival with mild toxicity in patients with recurrent HCC after OLT.

Adaptation and psychometric evaluation of the Chinese version of the functional assessment of chronic illness therapy spiritual well-being scale among Chinese childhood cancer patients in China

Background

Spiritual well-being is a strength for childhood cancer patients to cope with cancer. The availability of a valid and reliable instrument for assessing spiritual well-being is crucial. This study translated and adapted the Functional Assessment of Chronic Illness Therapy Spiritual Well-being scale (FACIT-Sp) for Chinese childhood cancer patients and examined the psychometric properties and factor structure in this population.

Methods

This was a methodological study. The FACIT-Sp was translated into Chinese. Adaptation was based on our qualitative study. For psychometric evaluation, a convenience sample of 412 were recruited based on the suggested sample size for the exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). Childhood cancer patients were included if they aged 8-17 years, with parental consent to participate, able to communicate that they were being treated for cancer, and able to communicate and read Chinese. Participants answered the Chinese version of the adapted FACIT-Sp, the Center for Epidemiology Studies Depression Scale for Children (CES-DC), and the Pediatric Quality of Life Inventory 3.0 Cancer Module (PedsQL). Content validity, convergent validity, internal consistency and test-retest reliability were examined. Both EFA and CFA assessed the structural validity of the adapted FACIT-Sp.

Results

The content validity index values for items ranged 0.8-1.0 and that for the scale was 0.84, indicating appropriate content validity. The scale had good internal consistency, with a Cronbach's alpha of 0.815. The FACIT-Sp scores positively correlated with the CES-DC scores, and negatively correlated with PedsQL scores, suggesting that the Chinese version of the adapted FACIT-Sp had reasonable convergent validity. EFA yielded a four-factor (meaning, peace, faith, and connection with others) model. The CFA results revealed that the four-factor model achieved a better fit than the original three-factor model (Chi-Square Mean/Degree of Freedom = 2.240 vs. 3.557, Comparative Fit Index = 0.953 vs. 0.916, Goodness of Fit Index = 0.909 vs. 0.884, Root Mean Square Error of Approximation = 0.078 vs. 0.112).

Conclusion

The Chinese version of the adapted FACIT-Sp is a reliable and valid instrument for assessing spiritual well-being among Chinese childhood cancer patients. This instrument can be applied in clinical settings for routine assessment.

The Therapy-Related Symptom Checklist for Children as a Method for Monitoring Symptoms in Chinese Children With Cancer: Linguistic Validation and Cross-Cultural Adaptation

BACKGROUND

Children with cancer commonly experience severe symptoms. These may be managed by routine monitoring of their occurrence andseverity using a validated tool.

AIM

This study aimed to translate and culturally validate a simplified Chinese version of the Therapy-Related Symptom Checklist for Children (TRSC-C).

DESIGN

Qualitative method.

PARTICIPANTS AND SETTING

We recruited children with cancer from a pediatric department of a tertiary hospital in Guangzhou, China.

METHODS

We used forward and backward translation by bilingual translators and standardized cognitive interviewing for linguistic validation and to check cross-cultural adaptation. A panel of experts assessed content validity.

RESULTS

Agreement was reached on cultural applicability, suitability for intended purpose, and clarification of the pre-test version. The content validity was good (indices ranged from 0.80-0.90). Fifteen Chinese children with cancer (aged 8-18 years) were included in cognitive interviews. The cognitive debriefing showed that the instrument was easy to understand and appropriate for monitoring symptoms in children with cancer. Some words were adjusted following participants' comments.

CONCLUSIONS

The simplified Chinese version of the TRSC-C was semantically and conceptually equivalent to the original version. Children between 8-18 years old can use this instrument to report symptoms and share their experiences about their disease and treatment.

Socioeconomic inequalities in cancer incidence and access to health services among children and adolescents in China: a cross-sectional study

BACKGROUND

Despite the substantial burden caused by childhood cancer globally, childhood cancer incidence obtained in a nationwide childhood cancer registry and the accessibility of relevant health services are still unknown in China. We comprehensively assessed the most up-to-date cancer incidence in Chinese children and adolescents, nationally, regionally, and in specific population subgroups, and also examined the association between cancer incidence and socioeconomic inequality in access to health services.

METHODS

In this national cross-sectional study, we used data from the National Center for Pediatric Cancer Surveillance, the nationwide Hospital Quality Monitoring System, and public databases to cover 31 provinces, autonomous regions, and municipalities in mainland China. We estimated the incidence of cancer among children (aged 0-14 years) and adolescents (aged 15-19 years) in China through stratified proportional estimation. We classified regions by socioeconomic status using the human development index (HDI). Incidence rates of 12 main groups, 47 subgroups, and 81 subtypes of cancer were reported and compared by sex, age, and socioeconomic status, according to the third edition of the International Classification of Childhood Cancer. We also quantified the geographical and population density of paediatric oncologists, pathology workforce, diagnoses and treatment institutions of paediatric cancer, and paediatric beds. We used the Gini coefficient to assess equality in access to these four health service indicators. We also calculated the proportions of cross-regional patients among new cases in our surveillance system.

FINDINGS

We estimated the incidence of cancer among children (aged 0-14 years) and adolescents (aged 15-19 years) in China from Jan 1, 2018, to Dec 31, 2020. An estimated 121 145 cancer cases were diagnosed among children and adolescents in China between 2018 and 2020, with world standard age-standardised incidence rates of 122·86 (95% CI 121·70-124·02) per million for children and 137·64 (136·08-139·20) per million for adolescents. Boys had a higher incidence rate of childhood cancer (133·18 for boys vs 111·21 for girls per million) but a lower incidence of adolescent cancer (133·92 for boys vs 141·79 for girls per million) than girls. Leukaemias (42·33 per million) were the most common cancer group in children, whereas malignant epithelial tumours and melanomas (30·39 per million) surpassed leukaemias (30·08 per million) in adolescents as the cancer with the highest incidence. The overall incidence rates ranged from 101·60 (100·67-102·51) per million in very low HDI regions to 138·21 (137·14-139·29) per million in high HDI regions, indicating a significant positive association between the incidence of childhood and adolescent cancer and regional socioeconomic status (p<0·0001). The incidence in girls showed larger variation (48·45% from the lowest to the highest) than boys (36·71% from lowest to highest) in different socioeconomic regions. The population and geographical densities of most health services also showed a significant positive correlation with HDI levels. In particular, the geographical density distribution (Gini coefficients of 0·32-0·47) had higher inequalities than population density distribution (Gini coefficients of 0·05-0·19). The overall proportion of cross-regional patients of childhood and adolescent cancer was 22·16%, and the highest proportion occurred in retinoblastoma (56·54%) and in low HDI regions (35·14%).

INTERPRETATION

Our study showed that the burden of cancer in children and adolescents in China is much higher than previously nationally reported from 2000 to 2015. The distribution of the accessibility of health services, as a social determinant of health, might have a notable role in the socioeconomic inequalities in cancer incidence among Chinese children and adolescents. With regards to achieving the Sustainable Development Goals, policy approaches should prioritise increasing the accessibility of health services for early diagnosis to improve outcomes and subsequently reduce disease burdens, as well as narrowing the socioeconomic inequalities of childhood and adolescent cancer.

FUNDING

National Major Science and Technology Projects of China, National Natural Science Foundation of China, Chinese Academy of Engineering Consulting Research Project, Wu Jieping Medical Foundation, Beijing Municipal Administration of Hospitals Incubating Program.

The systematic analysis and 10-year prediction on disease burden of childhood cancer in China

Background

There is a lack of in-depth analysis regarding the disease burden of childhood cancer in China. Indeed, this is the first time the topic has been addressed in detail. Drawing on population-based data for the past 30 years, this study systematically analyzes the composition and long-term trend of this disease burden in China.

Methods

GBD 2019 contained population-based data from 1990 to 2019 and was prepared using Microsoft Excel 2016. We used AAPC and ARIMA models for trend analysis and prediction formulation.

Results

In 2019, there were 45,601 new cases, 9,156 cancer deaths, and 782,530 DALYs in China. From 1990 to 2019, leukemia, together with brain and CNS cancer, invariably ranked highest in terms of new cases, cancer deaths, and DALYs. Leukemia accounted for more than 50%, but decreased over time. By contrast, the proportions for brain and CNS cancer increased. There were significant decreases in the overall incidence, mortality, and DALY rates in China, but these were still higher than the corresponding global average levels. Considering all types of childhood cancer, the incidence rate of testicular cancer showed the biggest increase, and the mortality and DALY rates of leukemia showed the largest decrease. In terms of different age groups, the overall incidence rate of childhood cancers increased in 0 to 4 age group, but it decreased in 5 to 14 age groups. The overall mortality and DALY rates of childhood cancers decreased in all four age groups. Over the next 10 years, the overall incidence rate of childhood cancer will increase, but the overall mortality and DALY rates will decrease. The increase in malignant skin melanoma will comprise the largest rise in the incidence, while the decrease for leukemia will be the largest fall in the incidence, cancer deaths, and DALYs.

Conclusion

The disease burden of all childhood cancers in China remains highly serious, especially for certain types of cancer and certain age groups. China should focus more emphatically on the incidence of childhood cancer in future, and it must consistently strengthen investment in the relevant research and medical resources to reduce the disease burden in this field.

Association of Ethnicity, Sex, and Age With Cancer Diagnoses and Health Care Utilization Among Children in Inner Mongolia, China

IMPORTANCE

China is experiencing a sustained increase in childhood cancer. However, whether differences exist in disease burden by ethnicity remains unclear.

OBJECTIVE

To compare differences in cancer diagnoses and health care utilization in Inner Mongolia among children subgrouped by ethnicity (Han vs Mongolian), sex, and age.

DESIGN, SETTING, AND PARTICIPANTS

This retrospective cohort study in Inner Mongolia, China, used data on children aged 0 to 14 years with cancer from the Inner Mongolia Regional Health Information Platform, which comprises the National Basic Medical Insurance database and the Inner Mongolia cause-of-death reporting system, from January 1, 2013, to December 31, 2019. Ethnicities analyzed included Han and Mongolian; patients of other ethnicities were not included in the analysis because of the small sample size. Cancer was broadly defined as a primary malignant tumor or hematologic cancer; benign central nervous system tumors were also included. A 2-year washout period was used to exclude prevalent cases. After diagnosis, the patients were followed up until the date of death or the end of the insured status, whichever came first.

EXPOSURES

Ethnicity (Han vs Mongolian), sex (male vs female), and age (0-4, 5-9, and 10-14 years).

MAIN OUTCOMES AND MEASURES

Crude incidence, 5-year prevalence, and survival rates at 1 year and 3 years after diagnosis; health care utilization, represented by medical costs during the first year and first 3 years after diagnosis; and hospital attendance with level (tertiary vs secondary and lower-level hospitals) and location of each unique visit.

RESULTS

From 2013 to 2019, 1 106 684 (2013), 1 330 242 (2014), 1 763 746 (2015), 2 400 343 (2016), 2 245 963 (2017), 2 901 088 (2018), and 2 996 580 (2019) children aged 0 to 14 years were registered in the NBMI database. Among the 2 996 580 children enrolled in 2019, the mean (SD) age was 6.8 (4.3) years, of whom 1 572 096 (52.5%) were male, 2 572 091 (85.8%) were Han, and 369 400 (12.3%) were Mongolian. A total of 1910 patients with cancer were identified (1048 were male [54.9%]; 1559 were Han [81.6%], and 300 were Mongolian [15.7%]). There were 764 hematologic cancers (40.0%) and 1146 solid tumors (60.0%). The overall crude incidence of cancer from 2015 to 2019 was 129.85 per million children (95% CI, 123.63-136.06), with a higher incidence among Mongolian than among Han children (155.12 [95% CI, 136.81-173.43] vs 134.39 [95% CI, 127.46-141.32]). The 5-year prevalence was 428.97 per million (95% CI, 405.52-452.42) in 2020, with a higher prevalence among Mongolian than among Han children (568.49 [95% CI, 91.62-645.36] vs 404.34 [95% CI, 379.77-428.91]). The combined 1-year (2015-2019) and 3-year (2015-2017) survival rates were 72.5% (95% CI, 67.5%-77.5%) and 66.8% (95% CI, 61.6%-71.9%), respectively. The 1-year (median [IQR], $1991 [$912-$10 181] vs $3991 [$1171-$15 425]) and 3-year (median [IQR], $2704 [$954-$13 909] vs $5375 [$1283-$22 466]) postdiagnosis costs were lower among Mongolian than among Han children. A higher proportion of Mongolian patients attended low-level hospitals (45.9% vs 17.4%).

CONCLUSIONS AND RELEVANCE

In this cohort study, Mongolian children had a higher incidence and prevalence of cancer but a lower demand for medical care, suggesting that further investigations are needed to identify mechanisms underlying ethnic disparities and ensure that care is equitable.

Lived experiences with unmet supportive care needs in pediatric cancer: Perspective of Chinese children and their parents

Objective

Unmet supportive care needs(SCNs) impact pediatric cancer patients and their parents. This study aimed to explore the unmet SCNs from the perspective of Chinese children with cancer and their parents through lived experiences.

Methods

The data of this study was collected using face-to-face semi-structured interviews. The participants were recruited from the oncology units of three children’s hospitals in China’s cities (Shanghai, Guangzhou, and Hefei) from October 2020 to December 2021. Data were analyzed using Colaizzi’s seven-step phenomenological analysis method.

Results

Eight pediatric cancer patients and twenty-four parents were enrolled in the study. Four main themes and eight subthemes (both children’s and parent’s perspectives) were generated: 1) meeting the ongoing needs along the cancer trajectory (can you tell me what comes next; our needs are growing); 2) communicating with a family focus (they only talk to my parents; let each family member have a voice); 3) providing care beyond the treatment (I am bigger than my body [the children’s needs for emotional consolidation and information about their prognosis]; there are things beyond treatment); 4) getting support from the community (I am not a monster [the children were unhappy about being treated differently]; we want to connect with the resources near us).

Conclusion

This study revealed multiple unmet SCNs from the perspective of Chinese children with cancer and their parents. The findings call for comprehensive and in-depth supportive care beyond treatment, integration of the family member voice in pediatric cancer care, and a coordinated pediatric cancer support mechanism in the Chinese healthcare system.

Consensus on Quality Indicators for Pediatric Oncology Nursing Care in Mainland China: A Delphi Method and Analytic Hierarchy Process

Background: Because routine nursing quality indicators are not suitable to evaluate pediatric oncology nursing care, this study aimed to identify a set of quality indicators for pediatric oncology nursing care in mainland China. Method: This prospective investigation utilized a modified Delphi technique and an analytic hierarchy process. A survey questionnaire was developed using a literature review and semi-structured interviews. Fifteen invited experts evaluated the importance of potential indicators through three rounds of Delphi survey by email in 2018. The importance weight of each indicator was identified through analytic hierarchy process. Results: In the Delphi survey, the average authoritative coefficient was 0.93-0.96 for each round of the inquiry. After three rounds of survey, 29 quality indicators were identified as important nursing outcomes for assessing the quality of pediatric oncology nursing care in mainland China. The importance rating mean score of indicators ranged between 4.67 and 5.00 on a 5-point scale, and the variation coefficient ranged between 0 and 0.19. Expert-assigned indicator importance weight varied between 0.0040 and 0.0870. Conclusion: This study identified an indicator system with 29 nursing-sensitive quality indicators that may represent potential indicator candidates for quality assessment of pediatric oncology nursing practice in mainland China.

Factors Affecting Family Management Among Chinese Parents of Children With Leukemia: A Multisite Study

BACKGROUND

Effective family management can improve the ability of children's families to cope with the disease. However, the family management styles of children with leukemia are unknown.

OBJECTIVE

This study used a family management style framework and structural equation model to determine the direct and indirect predictors of family management of children with leukemia.

METHODS

A total of 496 parents of children with leukemia completed the Family Management Measure, the Feetham Family Functioning Survey, the Social Support Rating Scale, and a demographic family information form. We used structural equation modeling to explore the direct and indirect effects of the study variables on family management styles.

RESULTS

Family functioning, family income, parental education level, and geographic location affect family management directly, among which family functioning has the most significant coefficient in the model (0.53). Siblings and social support can affect family management through the mediating effect of family functioning. Employment change can directly affect family management (-0.27) and indirectly affect family functioning (-0.08).

CONCLUSIONS

Our results support the family management style framework. Individual and family factors such as family income, parental education level, geographic location, employment change, siblings, and social support contribute to the ease or difficulty of family management. In addition, family functioning can also mediate between contextual influences and family management styles.

IMPLICATIONS FOR PRACTICE

Family functioning plays a vital role in relationships between contextual influences and family management. We can construct family management interventions according to family management influencing factors.

Translation and linguistic validation of the DISABKIDS chronic generic module into simplified Chinese (DCGM-37) for use among children with cancer

PURPOSE

To develop a simplified Chinese version of the DISABKIDS chronic generic module-37 (DCGM-37), and to test the translated measures in children with cancer by employing a cognitive interviewing technique.

DESIGN AND METHODS

The English version of DCGM-37 was translated forward and backward into simplified Chinese by bilingual translators, following the guidelines from its copyright holders, which also involved a cultural adaptation component. Twelve Chinese children aged 8-18 years and eight parents were cognitively interviewed.

RESULTS

The findings support the relevance, comprehensibility, and efficacy of the Chinese version. Consideration was given, and improvements were made, to the language, cultural concerns, and content, which improved functionality and increased validation. The patients/caregivers understood the instructions, questions, and answer choices. Some revisions, however, were made to address patient/caregiver feedback obtained through cognitive interviews. Conceptually and semantically, the simplified Chinese version of the DCGM-37 version was identical to the original. Conclusions The simplified Chinese version of the DCGM-37 was semantically and conceptually equivalent to the English version. Chinese children aged 8 to 18 years were able to comprehend this instrument.

CONCLUSIONS

The simplified Chinese version of the DCGM-37 was semantically and conceptually equivalent to the English version. Chinese children aged 8 to 18 years were able to comprehend this instrument and express their experiences and feelings about their life.

PRACTICE IMPLICATIONS

The simplified Chinese version of the DCGM-37 was translated, and cross-cultural adaptation and validation were performed. Chinese children found the tool easy to use and were able to express their experiences and feelings about their health-related quality of life.

International patterns and trends of childhood and adolescent cancer, 1978-2012

Background

This study aimed to provide a detailed analysis of the temporal trends of cancer incidence rates for individuals aged 0-19 years in selected regions globally from 1978 to 2012.

Methods

Data were obtained from Volumes V-XI of Cancer Incidence in Five Continents (CI5), published by the International Agency for Research on Cancer. A total of 53 registries in 23 regions from the Americas, Asia, Europe, and Oceania that contained information on cancer incidence throughout 1978-2012 (35 years) were included in this study. Joinpoint regression was used for the analysis of trends.

Results

Most regions showed increasing trends in overall childhood cancer among children (aged 0-14 years) and adolescents (aged 15-19 years). Nearly all regions showed rising trends in childhood and adolescent leukemia incidence rates, whereas the incidence of lymphoma among children generally decreased. Only France, Australia, and New Zealand showed decreasing trends for malignant central nervous system (CNS) tumors among adolescents. Kidney cancer and bone cancer incidence rates remained stable for most regions. The incidence of thyroid cancer among adolescents increased in most regions and that of testicular cancer decreased in approximately one-half of the regions studied.

Conclusion

The international temporal trends of cancer incidents among children and adolescents are varied by region, cancer type, age group, and gender, and have changed over time.

Childhood cancer survivorship in China: An overview of the past two decades

Across countries in the world, China has the largest population of childhood cancer survivors. Research and care for the childhood cancer survivor population in China is fragmented. We searched studies published in English or Chinese language between January 1, 2000 and June 30, 2021, which examined various aspects of childhood cancer survivorship in China. The existing China-focused studies were largely based on a single institution, convenient samplings with relatively small sample sizes, restricted geographic areas, cross-sectional design, and focused on young survivors in their childhood or adolescence. These studies primarily focused on the physical late effects of cancer and its treatment, as well as the inferior psychological wellbeing among childhood cancer survivors, with few studies examining financial hardship, health promotion, and disease prevention, or healthcare delivery in survivorship. Our findings highlight the urgent need for research and evidence-based survivorship care to serve the childhood cancer survivor population in China.

Psychometric validation of the simplified Chinese version of the therapy-related symptom checklist in children with cancer

PURPOSE

To validate a simplified Chinese version of the therapy-related symptom checklist for children (TRSC-C) in children with cancer.

METHODS

Reliability was assessed by internal consistency and test-retest coefficients. Dimensionality and construct validity were clarified using exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). Pearson's correlation coefficient was calculated between the TRSC-C and the PedsQL 3.0 cancer model (PedsQL 3.0) and the Lansky Play Performance Scale (LPPS) to test concurrent validity. A Student's t-test was used to compare the scores of the simplified Chinese version of the TRSC-C subscales by gender, age groups, and functional status to test sensitivity of the TRSC-C.

RESULTS

A sample of 170 children with cancer was recruited (11.27 ± 2.31 years). Cronbach's alpha (0.89) and interclass correlation coefficient (0.98) were acceptable. Seven factors with eigenvalues >1 explained 56.86% of the total variances. CFA demonstrated an acceptable model (CFI = 0.93, RMSE = 0.04). Concurrent validity was supported by moderate to high correlations between the TRSC-C and both the PedsQL 3.0 (r = -0.71) and LPPS (r = -0.43). The TRSC-C scores significantly differed by age groups and functional status (effect size 0.40-0.93), indicating adequate sensitivity.

CONCLUSION

The simplified Chinese version of the TRSC-C demonstrated acceptable reliability, validity, and sensitivity to support its use in clinical practice and future studies.

Tumor Suppressive Role of MUC6 in Wilms Tumor via Autophagy-Dependent β-Catenin Degradation

Wilms tumor is the most common renal malignancy in children. Known gene mutations account for about 40% of all wilms tumor cases, but the full map of genetic mutations in wilms tumor is far from clear. Whole genome sequencing and RNA sequencing were performed in 5 pairs of wilms tumor tissues and adjacent normal tissues to figure out important genetic mutations. Gene knock-down, CRISPR-induced mutations were used to investigate their potential effects in cell lines and in-vivo xenografted model. Mutations in seven novel genes (MUC6, GOLGA6L2, GPRIN2, MDN1, MUC4, OR4L1 and PDE4DIP) occurred in more than one patient. The most prevalent mutation was found in MUC6, which had 7 somatic exonic variants in 4 patients. In addition, TaqMan assay and immunoblot confirmed that MUC6 expression was reduced in WT tissues when compared with control tissues. Moreover, the results of MUC6 knock-down assay and CRISPR-induced MUC6 mutations showed that MUC6 inhibited tumor aggression via autophagy-dependent β-catenin degradation while its mutations attenuated tumor-suppressive effects of MUC6. Seven novel mutated genes (MUC6, GOLGA6L2, GPRIN2, MDN1, MUC4, OR4L1 and PDE4DIP) were found in WT, among which MUC6 was the most prevalent one. MUC6 acted as a tumor suppressive gene through autophagy dependent β-catenin pathway.

p53 oligomerization status as an indicator of sensitivity of p53-wildtype neuroblastomas to the combination of DNA damaging agent and Chk1 inhibitor

Neuroblastomas are one of the most common types of solid tumors in infants and children and are responsible for approximately 15% of childhood cancer deaths. Neuroblastomas rarely have mutations in p53, with less than 2% of NB containing mutations in p53, compared to up to 60% for other tumor classes. Previous studies on the therapeutic combination of a DNA damaging agent and checkpoint kinase 1 (Chk1) inhibitor have shown that DNA damage-induced cell cycle arrest can be specifically abrogated in p53-defective tumors. However, some p53-wildtype tumors have also been shown to be sensitive to this therapeutic combination, suggesting that these cells have other defects in the p53 response that can be exploited for therapeutic purposes. In the current study, we investigated the response to the combination of a DNA damaging agent (SN38) and a Chk1 inhibitor (UCN-01) of four p53-wildtype neuroblastoma cell lines: SK-N-SH, SH-SY5Y, SK-N-AS, and Lan-5. When the cells were treated with concentrations of SN38 ranging from 0–30 ng/ml, all four cell lines accumulated p53 which was phosphorylated on serines 15 and 20. However, only the SK-N-SH were found to activate p21^waf1 and repress cyclin B. In order to assess sensitivity to UCN-01-mediated abrogation of cell cycle arrest, cell were treated with 10 ng/ml SN38 for 24 h, followed by 25 nM UCN-01 for 6 and 24 h. The SK-N-SH showed no sensitivity to UCN-01 treatment whereas the SH-SY5Y, SK-N-AS, and Lan-5 abrogated G₂ arrest within 24 h. Our recent studies revealed that cells that are sensitive to checkpoint abrogation lack p53 dimers and tetramers, so we analyzed the oligomerization status of p53 in all four cell lines using glutaraldehyde crosslinking. The SK-N-SH cells possessed levels of p53 dimers and tetramers similar to what has previously been reported in p53-wildtype MCF10A cells. The SH-SY5Y, SK-N-AS, and Lan-5 however, had extremely low to undetectable levels of dimers and tetramers. Our study also showed no cytoplasmic accumulation of p53 in these cells contrary to some previous reports. The results of this study suggest that oligomerization status may serve as an indicator of sensitivity of p53-wildtype tumors to the therapeutic combination of DNA damaging agent and Chk1 inhibitor.

Posttraumatic stress symptoms in Chinese children with ongoing cancer treatment and their parents: Are they elevated relative to healthy comparisons?

OBJECTIVE

The objective of this work is to compare posttraumatic stress symptoms (PTSS) between families of children on cancer treatment and families of healthy children in China and to analyse the association among child PTSS, parent PTSS, and depression in the cancer group.

METHODS

Participants were children on cancer treatment (n = 91) and their parents (n = 91), and healthy children (n = 114) and their parents (n = 96). The children were asked to self-report PTSS, and the parents completed self-reported measures of PTSS and depression.

RESULTS

Although the prevalence of probable PTSD in children on cancer treatment was higher than that in comparisons (8.79% vs. 0.88%, P < 0.01), no statistic differences in PTSS levels were found between the two groups (P > 0.05). However, significant differences in PTSS levels and the prevalence of severe PTSS (21.98% vs. 1.04%) between parents of children with cancer and comparisons were observed (P < 0.001). Parent PTSS and depression were positively associated with child PTSS in the cancer group (P < 0.01).

CONCLUSION

The prevalence of probable PTSD in Chinese children with cancer was low, but PTSS was remarkably prevalent in their parents. Greater parent PTSS and depression were related to greater child PTSS. Results underline the importance to provide supportive psychological care for Chinese parents of children undergoing cancer treatment.

Investigation of Bioaccumulation and Human Health Risk Assessment of Heavy Metals in Crayfish (Procambarus clarkii) Farming with a Rice-Crayfish-Based Coculture Breeding Modes

Due to the rapid development of the crayfish (Procambarus clarkii) industry in Chinese catering, people are paying more attention to the bioaccumulation of heavy metals in crayfish. To evaluate the health risks associated with the consumption of crayfish, nine types of heavy metals in both crayfish and abdominal muscles of crayfish were investigated. Crayfish samples were collected from rice-crayfish-based coculture breeding modes from different areas located in the middle and lower reaches of the Yangtze River. The average concentrations of heavy metals in the whole crayfish were much higher than the abdominal muscle of crayfish. The estimated daily intake (EDI) of heavy metals in the abdomen of crayfish was calculated to assess the noncarcinogenic risk and the overall noncarcinogenic risk including the target hazard quotient (THQ), the hazard index (HI) and carcinogenic risk (CR). The results of the present study showed that the consumption of crayfish may not present an obvious health risk to human associated with heavy metals. However, the THQ values of As in the abdominal muscles of crayfish for adults in EnShi (ES) and children in JiaYu (JY) should be of concern due to the higher contribution to the potential health risks of crayfish compared to other metals. Through X-ray photoelectron spectroscopy (XPS) detection of heavy metal As, it is found that As in crayfish culture environment mainly exists in the form of As3+.Therefore, the quality and quantity of crayfish consumption should be moderated to prevent the bioaccumulation of As. The results indicate that crayfish cultured in different areas may have similar pollution levels and/or emissions from the same pollution sources.

Suspected Adverse Drug Reactions in Pediatric Cancer Patients in China: An Analysis of Henan Province Spontaneous Reporting System Database

Introduction

Adverse drug reactions (ADRs) in pediatric cancer patients have not yet received due attention in the world. Antineoplastic drugs are frequently related to ADRs. Few studies focus on the ADR and the intervention measures in pediatric cancer patients.

Methods

ADR reports submitted to Henan Adverse Drug Reaction Monitoring Center from 2016 to 2020 for individuals aged from birth to 17 years (including 17 years) were included. Data were analyzed with respect to gender, age, disease types, past history of ADR, occurrence time of ADR, polypharmacy, route of administration, off-label drug use, name of suspected drugs per ADR report, and severity of ADR reports.

Results

A total of 431 ADR reports related to antineoplastic drugs in pediatric patients were collected, 31.55% were serious ADRs (SADRs). The median age of patients was six years (inter quartile range, IQR: 3-11), the age groups with higher reporting rates were concentrated in 1-3-year-olds (130). Past history of ADR, occurrence time of ADR and polypharmacy were statistically associated with SADR. Myelosuppression was the most frequent ADR (15.55%), cytarabine was the most frequent drug (26.22%). The signal mining method produced 14 signals, three signals were off-label ADRs.

Conclusions

This study described the characteristics of ADRs in pediatric cancer patients. By conducting signal mining method, three off-label ADRs need further study. We should pay more attention to these ADRs and develop relative management strategies. More researches are needed to achieve a better understanding of the characteristics of ADRs in pediatric cancer patients of China.

Effectiveness of a Mobile Device-Based Resilience Training Program in Reducing Depressive Symptoms and Enhancing Resilience and Quality of Life in Parents of Children With Cancer: Randomized Controlled Trial

BACKGROUND

Caring for children with cancer can be a stressful experience for parents and may have negative effects on their physical and psychological well-being. Although evidence has shown that resilience is associated with positive psychological well-being, few interventions have been specifically designed to enhance the resilience of parents of children with cancer.

OBJECTIVE

The aim of this study is to examine the effectiveness of a mobile device-based resilience training program in reducing depressive symptoms and enhancing resilience and quality of life (QoL) in parents of children with cancer.

METHODS

Parents of children diagnosed with cancer were recruited from the pediatric oncology wards of 3 tertiary hospitals in China. The participants were randomly assigned to either the experimental group (52/103, 50.5%) to undergo an 8-week mobile device-based resilience training program or to the control group (51/103, 49.5%) to receive an 8-week program of placebo information. The study outcomes included resilience, depressive symptoms, and QoL, as measured by the Connor-Davidson Resilience Scale, the Self-Rating Depression Scale, and the Short Form of the 6-Dimension Health Survey, respectively. All data were collected at baseline and at 2 and 6 months of follow-up. The data analysis followed the intention-to-treat principle. A generalized estimating equation was used to examine the effects of the intervention.

RESULTS

The participants were mostly female (72/103, 69.9%), and their mean age was 33.6 (SD 5.2) years. The participants in the experimental group showed significantly higher levels of resilience (mean 67.96, SD 15.8 vs mean 58.27, SD 19.0; P<.001) and lower levels of depressive symptoms (mean 40.17, SD 9.9 vs mean 46.04, SD 10.9; P<.001) than those in the control group at 6 months of follow-up. The intervention showed statistically significant effects in improving resilience (β=6.082; P=.01) and decreasing depressive symptoms (β=-2.772; P=.04) relative to the control group. The QoL score in the experimental group was higher than that in the control group at 6 months of follow-up (mean 0.79, SD 0.2 vs mean 0.76, SD 0.3; P=.07); however, no statistically significant intervention effect was detected (β=.020; P=.38).

CONCLUSIONS

The mobile device-based resilience training program effectively enhanced resilience and alleviated depressive symptoms in parents of children with cancer. It is highly recommended that health care professionals incorporate this resilience training program when providing psychological care to parents of children with cancer.

TRIAL REGISTRATION

Clinical.Trials.gov NCT04038242; http://clinicaltrials.gov/ct2/show/NCT04038242.

Translation and Validation of TRANSITION-Q for Chinese Pediatric Cancer Survivors

PURPOSE

Cancer survivorship starts at diagnosis. Transition readiness is an important indicator for pediatric cancer survivors to move from pediatric to adult medical care. Appropriate measurement of transition readiness can facilitate better cancer survivorship. This study aimed to translate and validate of the English version of the TRANSITION-Q into Chinese.

DESIGN AND METHODS

The translation followed the International Society for Pharmacoeconomics and Outcomes Research (ISPOR) best-practice guidelines for the translation and cultural adaptation of patient-reported outcome measures (PROM). A cross- psychometric testing on reliability and validity were conducted from a convenient sample of Chinese adolescent cancer survivors aged 10-19 years.

RESULTS

Two hundred seventy-one pediatric cancer patients were recruited for the psychometric validation. The 14-item Chinese TRANSITION-Q demonstrated adequate reliability. In exploratory factorial analyses and confirmatory factor analysis, a two-factor structure emerged with a variance of 54.78%, demonstrating construct validity. Convergent validity test showed TRANSITION-Q score was significantly positively correlated with self-efficacy (r = -0.84, p = 0.002). The known-group validity demonstrated the older group (age ≥14 years) had a significantly higher mean TRANSITION-Q score than the younger group (age < 14 years) (p = 0.04).

CONCLUSION

The Chinese version of the TRANSITION-Q is reliable and valid and can be used in Chinese research and clinical settings.

IMPLICATIONS FOR PRACTICE

This scale can be used in Chinese clinical and research settings to investigate understanding of transition readiness in Chinese pediatric cancer survivors.

Childhood cancer drugs in China: An overview and comparison of regulatory approvals in China and the United States

Different from less developed countries, 80% of children with cancers in the United States are cured. Traditional chemotherapy drugs are the mainstay of therapies; new targeted medications have become available recently. Using publicly available data, we created a database of cancer drugs with paediatric malignancy indications approved by 31 October 2020 in China and the United States. We compared numbers, type, indications and listing on the World Health Organization Model List of Essential Medicines for Children (WHO EMLc) between the two countries, assessed the correlation between paediatric indications and cancer incidences, and described evidence supporting approvals of targeted medications in the two settings. Our study showed that by 31 October 2020, 31 and 39 cancer drugs available in China and the United States were approved for use in children, corresponding to 137 and 102 paediatric cancer indications, respectively. About half of these drugs (17 in China and 18 in the United States) were listed on the WHO EMLc. The correlation between indications and burden of disease was higher in the United States (r = 0.68) than China (r = 0.59). More traditional chemotherapy drugs were approved in China (n = 27) than the United States (n = 19). Of 20 targeted childhood anticancer medicines approved in the United States, mainly on the basis of single arm trials (27/32 indications, 84.4%), only four were approved for paediatric indications in China, at a median of 2.8 years after US Food and Drug Administration approval. A harmonised, evidence-based regulatory framework is needed to ensure approvals of needed, safe and efficacious childhood cancer drugs across the world.

The Experiences of Chinese Children 5- to 7-year-old during cancer Treatment Reflected Through Interviews and Drawings

Background: For children with cancer, the experience during treatment can be challenging. There is a limited number of studies on self-reported treatment experiences of younger Chinese children with cancer using qualitative methods. Objectives: This study aimed at exploring the experience of Chinese children aged 5 to 7 years during cancer treatment reflected through interviews and drawings. Methods: This study used a descriptive qualitative design with the technique of "draw-and-tell." Participants were enrolled from the pediatric oncology inpatient department of one national children's medical center in China. They were asked to draw a picture of "your feelings in the hospital." An inductive content analysis approach was used. Results: Twelve participants were enrolled (8 male, mean age 5.7 years). Four themes were established: (1) suffering from adverse treatment effects; (2) perceiving changed relationships; (3) being thankful for others; and (4) trying out coping strategies. Conclusion: Chinese children aged 5 to 7 years expressed multiple cancer treatment impacts. They appreciated others' support and had their own way to cope with treatment demands. The authors also extended the dynamic nature of using the "draw-and-tell" methodology. Study findings highlight the importance of inviting and hearing the voice of young children during their cancer treatment, with particular consideration of the influence of disease, treatment, child development, family dynamics, and culture.

Treatment Decision Making and Regret in Parents of Children With Incurable Cancer

BACKGROUND

The treatment-related decision-making process is a highly emotional time for parents of children with incurable cancer, and they tend to continue the cancer-directed treatment even when they realize that there is no cure for their child.

OBJECTIVE

To evaluate whether parents involved in different treatment decisions regretted their treatment decision after their child's death.

METHODS

We collected prospective data from 418 parents of children who died of incurable cancer after receiving cancer care at 1 of 4 hospitals. We assessed parent decisional regret and its association with the type of treatment decision made (non-cancer-directed vs cancer-directed). Propensity score-matched analysis (at a ratio of 1:1) was performed.

RESULTS

One hundred forty-eight parents (35.4%) reported heightened regret. Two isonumerical arms with 103 (non-cancer-directed) and 103 (cancer-directed) resulted after propensity score matching. Parents with a cancer-directed treatment decision (relative risk, 1.53; 95% confidence interval, 1.24-1.90; P = .002) were more likely to report decisional regret compared with those with a non-cancer-directed decision.

CONCLUSION

Bereaved parents with a cancer-directed treatment decision are more likely to experience increased regret for their decision than bereaved parents involved in a non-cancer-directed treatment decision.

IMPLICATIONS

Shared-decision aids should be prepared for young parents with low education to improve disease-related knowledge, accurate risk perceptions, and options congruent with parents' values.

Identification of a nomogram based on an 8-lncRNA signature as a novel diagnostic biomarker for childhood acute lymphoblastic leukemia

Childhood acute lymphoblastic leukemia (cALL) still represents a major cause of disease-related death in children. This study aimed to explore the prognostic value of long non-coding RNAs (lncRNAs) in cALL. We downloaded lncRNA expression profiles from the TARGET and GEO databases. Univariate, least absolute shrinkage and selection operator (LASSO) and multivariate Cox regression analyses were applied to identify lncRNA-based signatures. We identified an eight-lncRNA signature (LINC00630, HDAC2-AS2, LINC01278, AL356599.1, AC114490.1, AL132639.3, FUT8.AS1, and TTC28.AS1), which separated the patients into two groups with significantly different overall survival rates. A nomogram based on the signature, BCR ABL1 status and white blood cell count at diagnosis was developed and showed good accuracy for predicting the 3-, 5- and 7-year survival probability of cALL patients. The C-index values of the nomogram in the training and internal validation set reached 0.8 (95% CI, 0.757 to 0.843) and 0.806 (95% CI, 0.728 to 0.884), respectively. The nomogram proposed in this study objectively and accurately predicted the prognosis of cALL. In vitro experiments suggested that LINC01278 promoted the proliferation of leukemic cells and inhibited leukemic cell apoptosis by targeting the inhibition of miR-500b-3p in cALL, and LINC01278 may be a biological target for the treatment of cALL in the future.

Patterns and trends of cancer incidence in children and adolescents in China, 2011-2015: A population-based cancer registry study

Background

Cancer is a major concern for children and adolescents worldwide. This study aims to report on cancer incidence patterns at age 0–19 years in 2011–2015 and their trends in 2000–2015.

Methods

We collected data on malignancies in population of 0–19 years submitted by high‐quality population‐based cancer registries in China. Age‐standardized rates by world standard population (WSR) and annual percent change (APC) were calculated.

Results

In total, 215 cancer registries from 30 provinces contributed datasets during 2011–2015. Twenty‐two registries provided continuous data for trend analysis from 2000 to 2015. In total 16,954 malignancies occurred in 177,416,582 person‐years. WSRs were 93.32 and 96.03 per million person‐years in children aged 0–14 and 0–19 years. Incidence rates were higher in boys than in girls and were higher in urban area than in rural area. In children aged 0–14 years, the top three common diagnostic groups were leukemia, central nervous system (CNS) tumors, and lymphomas in both sexes. In adolescents aged 15–19 years, the top three common diagnostic groups were leukemia, epithelial tumors and melanoma, and CNS tumors in boys and epithelial tumors and melanoma, leukemia, and germ cell and gonadal tumors in girls. WSRs for cancers in 0–19 years of age increased significantly in boys from 2000 to 2005 (APC = 5.3%, 95% CI: 2.3%–8.3%) and in girls from 2000 to 2015 (APC = 1.2%, 95% CI: 0.1%–2.4%).

Conclusions

Cancer incidence in children and adolescents is on the rise in China. The observed age, sex, and geographical variations in cancer incidence should be used to inform targeted prevention and control policies.

Pain Reported by Chinese Children During Cancer Treatment: Prevalence, Intensity, Interference, and Management

BACKGROUND

Pain is a frequently reported and distressing symptoms during cancer treatment. However, there is limited evidence on pain reported by Chinese children with cancer.

OBJECTIVES

This study aimed to investigate the prevalence, intensity, interference, and management of pain reported by Chinese children during cancer treatment and explore the predictors of pain interference.

METHODS

We conducted a cross-sectional survey to investigate the pain intensity, pain interference, co-occurring symptoms (anger, anxiety, depression, fatigue), and pain management strategies reported by children 8 years and older undergoing active cancer treatment in 4 Chinese hospitals.

RESULTS

Data were analyzed for 187 children. The prevalence of moderate to severe pain (≥4/10) was 38.50%, with an average pain interference score of 52.97 out of 100. Approximately 24% of children were prescribed pain medicine. Pain interference and pain intensity were marginally correlated (r = 0.047, P < .01) and were both positively correlated with pain duration and co-occurring symptoms and negatively correlated with perceived pain alleviation (all P < .01). Multiple regression analyses suggested that severe pain intensity (B = 2.028, P = .003) and fatigue (B = 0.440, P < .001) significantly predicted higher levels of pain interference (R2 = 0.547, F = 23.102, P < .001).

CONCLUSION

Chinese children with cancer reported a low pain intensity score but a relatively high level of pain interference. According to the children's reports, pain has not been sufficiently addressed through Chinese pediatric oncology supportive care.

IMPLICATIONS FOR PRACTICE

There is an urgent requirement for comprehensive pain assessment and standardized, targeted interventions in Chinese pediatric oncology pain management.

The development and initial evaluation of referral flowchart for suspected neuroblastoma for pediatricians in nononcology clinics in China

BACKGROUND

The delayed diagnosis of neuroblastoma (NB) is common in China, which results in the prognosis of NB in China lagging behind that in developed countries.

METHODS

A referral flowchart for suspected NB was implemented in nononcology clinics at Beijing Children's Hospital (BCH). Patients with symptoms of suspected NB were referred from nononcology clinics in BCH to oncology clinics and confirmed NB cases were regarded as referral group. The control group comprised patients initially diagnosed with NB who came directly to oncology clinics in BCH from other regions nationwide. The age at NB diagnosis was compared as primary outcome, and the 5-year overall survival (OS) and event-free survival (EFS) were compared via the Kaplan-Meier method and log-rank tests.

RESULTS

In total, 3337 children with suspected NB were screened consecutively from 687 070 pediatric patients. Through examination of urine vanillylmandelic acid and homovanillic acid, or B-ultrasound, 102 of 3337 patients were referred to oncologists for comprehensive evaluations. Eventually, 29 referred patients were diagnosed as NB and the hospital-based diagnosis rate of NB was 4.2 per 100 000 visits. The median age at diagnosis in the referral group was 21.0 months, which was 9 months earlier than that of the control group (30.0 months, P = .026). The 5-year OS rate was 72.4% in the referral group, which was higher than that of the control group (66.7%) but without statistical significance (P = .664).

CONCLUSION

Delayed NB detection could be avoided by training pediatricians in nononcology clinics to detect suspected NB and refer these patients to oncologists.

Global pediatric radiation therapy in resource-limited settings

This report provides a summary of the global burden of childhood cancer morbidity and mortality, which disproportionately affects low- and middle-income countries as well as low- and middle-income communities within high-income countries. We review past successes and current challenges to improving clinical pediatric radiotherapy, education, and research in these regions. The Pediatric Radiation Oncology Society Taskforce in Low- and Middle-Income Countries recently outlined specific aims: (a) to increase access and quality of radiotherapy for children and adolescents afflicted with cancer; (b) to enumerate, engage, and educate a global community of providers of childhood and adolescent radiotherapy; and (c) to create evidence establishing the outcomes of setting-specific treatment standards of care when first-world standards are not achievable. This report will improve awareness of these disparities and promote attempts to correct them.

Assessing health-related quality of life in Chinese children and adolescents with cancer: validation of the DISABKIDS chronic generic module (DCGM-37)

Background

With increasing cancer incidence and decreasing cancer mortality, there is a growing need for a valid and culturally adapted tool to measure health-related quality of life in children with cancer. This study validated the DISABKIDS Chronic Generic Module (DCGM-37) in Chinese children and adolescents with cancer.

Methods

The DCGM-37 was translated and adapted for use in China following the guidelines from its copyright holders. In total, 140 children and adolescents with cancer and their guardians were included in this cross-sectional study. Internal consistency and test-retest reliability were evaluated. Convergent validity was examined using Pearson correlation between the DCGM-37 and the PedsQL 4.0 Generic Core Scale. Dimensionality was clarified using exploratory factor analysis. Discriminant validity was evaluated by comparing DCGM-37 scores by sex, age, family income, and clinical characteristics.

Results

Internal consistency (Cronbach’s alpha 0.91) and test–retest reliability were good (intraclass correlation coefficient 0.87, 95% confidence interval 0.73–0.94). Strong correlations between the DCGM-37 and the PedsQL 4.0 (r = 0.83) suggest good convergent validity. Six factors explained 51.94% of the total variance. Children with leukemia scored higher than those with sarcoma in all subscales (effect size ranged from 0.39 to 0.83), especially the “social exclusion” subscales (effect size 0.83). Small to moderate differences (effect size ranged from 0.38 to 0.58) were observed by sex, age, and family income. Neither floor nor ceiling effects were observed.

Conclusion

The DCGM-37 is reliable and valid for measuring health-related quality of life in Chinese children and adolescents with cancer.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12885-021-07910-9.

Analysis of the Spectrum and Characteristics of Pediatric Cancer Based on Hospital Information Systems in China

Purpose

The purpose of this study was to use the hospital information system to analyze the cancer profile and compare demographics, hospitalization, status of surgery and treatment cost of various cancer categories based on the electronic health record (EHR) of outpatient children with tumors in Shanghai, China.

Patients and Methods

Information was collected from 3834 inpatients aged 0-18 who were diagnosed with malignant tumors in all 17 hospitals with pediatric wards in the Pudong New District of Shanghai from 2011 to 2016. All patients were classified according to the International Classification of Childhood Cancer-3 (ICCC-3). The chi-squared test was used to compare demographics, hospitalization information, status of surgery and treatment cost according to inpatients' cancer category.

Results

In both the malignant non-solid tumor and solid tumor groups, males and those aged 0-4 years were the dominant groups. Lymphocytic leukemia was the most common cancer in all inpatients (n=994, 25.93%), and the acute myeloid leukemia had the longest length of stay of inpatients (median=26.00 days). In both the non-solid and solid tumor groups, patients who received only one type of surgery had an advantage. The highest proportion of patients who had undergone surgery was found in non-Hodgkin lymphoma patients. In terms of total cost, surgical cost and medicine cost, the expenditure of central nervous system tumor patients was the highest. Astrocytoma had the highest total cost.

Conclusion

Leukemia is common in children with cancer in Pudong and should be given attention. Because the highest financial burden falls on patients with central nervous system tumors and acute myeloid leukemias, the government should take immediate and targeted measures for these cancers in particular.

Identifying Priorities for Harmonizing Guidelines for the Long-Term Surveillance of Childhood Cancer Survivors in the Chinese Children Cancer Group (CCCG)

PURPOSE

Survivors of childhood cancer often experience treatment-related chronic health conditions. Given its vast population, China shares a large proportion of the global childhood cancer burden. Yet, screening and treatment of late effects in survivors of childhood cancer remain underaddressed in most regions of China. This study aimed to identify high-priority late effects for harmonizing screening guidelines within the Chinese Children's Cancer Group (CCCG), as well as barriers and enablers of the implementation of surveillance recommendations in local practice.

METHODS

To establish clinical consensus, 12 expert panelists who represent major institutions within the CCCG completed a Delphi survey and participated in a focus group discussion. The survey solicited ratings of the prevalence, severity, and priority for screening of 45 late effects. Major themes identified from the focus group were analyzed using thematic analysis.

RESULTS

The Delphi survey identified eight high-priority late effects for harmonization within CCCG: osteonecrosis, osteoporosis, left ventricular dysfunction, secondary brain tumors, treatment-related myeloid leukemia, gonadal dysfunction, growth hormone deficiency, and neurocognitive deficits. The common barriers to implementing survivorship programs include lack of support and resources for clinicians to provide follow-up care. Patients were also concerned about privacy issues and lacked awareness of late effects. Many institutions also lacked rehabilitation expertise and referral pathways.

CONCLUSION

By identifying obstacles related to the professional setting, patient behavior, and organization of care, our study identified resources and a framework for establishing collaborative strategies to facilitate follow-up care of childhood cancer survivors in China.

Relationships between resilience and quality of life in parents of children with cancer

CLINICALTRIALS.GOV ID

NCT03631485.

Acute kidney injury among hospitalized children with cancer

BACKGROUND

Few studies to date have analyzed the epidemiology of acute kidney injury (AKI) in children with cancer in developing countries. The aim of this study was to assess the incidence, risk profile and outcomes of AKI in Chinese children hospitalized with cancer.

METHODS

This multi-center study analyzed Chinese children hospitalized with cancer in 2013-2015. Electronic hospital and laboratory databases were screened to select pediatric patients with malignancy who had at least two Scr results within any 7-day window during their first 30 days of hospitalization. AKI events were identified and staged according to Kidney Disease Improving Global Outcomes (KDIGO) criteria. The incidence of and risk factors for AKI were analyzed, as were mortality rate, incidence of kidney recovery, and length of hospital stay.

RESULTS

Of the 9828 children with cancer, 1657 (16.9%) experienced AKI events, including 549 (5.6%) community-acquired (CA-AKI) and 1108 (11.3%) hospital-acquired AKI (HA-AKI) events. The three types of cancer with the highest incidence of AKI were urinary system cancer (25.8%), hepatic cancer (19.4%), and retroperitoneal malignancies (19.1%). The risk factor profiles of CA-AKI and HA-AKI events differed, with many HA-AKI events due to treatment with nephrotoxic agents. In-hospital death rates were 5.4% (90 of 1657) in children with and 0.9% (74 of 8171) in children without AKI events. AKI events were also associated with longer hospitalization and higher daily costs.

CONCLUSIONS

AKI events are common among Chinese children hospitalized for cancer and are associated with adverse in-hospital outcomes.

Basic research in childhood cancer: Progress and future directions in China

Childhood cancer is a leading cause of death in children. Some childhood cancers have a particularly high mortality rate. Following the World Health Organization's emphasis on child health, most governments worldwide have taken measures to facilitate childhood cancer research. Thus, the scientific community is showing increasing interest in this area. Chinese government has prominence in building a system for the diagnosis and treatment of childhood cancer, thereby promoting the development of childhood cancer research. This review summarizes the research progress, challenges, and perspectives in childhood cancer, and the increasing contributions of National Natural Science Foundation of China (NSFC) in the past decade (2008-2018).

Neurocognitive impairment in Asian childhood cancer survivors: a systematic review

Childhood cancer survivors are at higher risk of developing neurocognitive deficits due to the intensive treatment they received at an early age. Most studies on childhood cancer survivorship have so far focused on the Western populations. Due to the ethnic, genetic, environmental, and cultural differences, clinical data of the Western populations may not be representative of Asian countries. This scoping review systematically summarized the existing clinical evidence of the neurocognitive impairment of Asian childhood cancer survivors. We searched the Embase and Medline databases for studies assessing the neurocognitive functions of survivors in Asia, who were diagnosed with cancer before the age of 19 and completed active treatment. The literature search identified 13 studies involving 2212 participants from five Asian countries: South Korea (n = 4, 30.8%), Taiwan (n = 3, 23.1%), Japan (n = 3, 23.1%), Hong Kong (n = 2, 15.4%), and Thailand (n = 1, 7.7%). The included studies focused on CNS tumors (n = 10, 76.9%), hematological malignancies (n = 7, 53.8%), or heterogeneous cancer diagnoses (n = 3, 23.1%). Collectively, mild-to-moderate impairment in intelligence was observed in 10.0 to 42.8% of survivors, which seemed higher than the reported rate in Western survivors. We speculate that the ethnic and genetic variations in drug responses and susceptibility to adverse chronic toxicities may have contributed to the differences in the prevalence and severity of neurocognitive impairment between these two populations. To better understand the effects of culturally relevant and region-specific environmental risk factors on the post-treatment neurocognitive development in cancer survivors, a holistic approach that addresses the complex interactions between biological, physical, and psychosocial factors is needed. This will aid the development of effective intervention strategies to improve the functional and psychosocial outcomes of cancer survivors in Asian societies.

Childhood Cancer Survival in Brunei Darussalam

Background:

This study aims to determine the survival rates for children and adolescents aged 0-19 years diagnosed with childhood cancer and to evaluate the associated factors for childhood cancer survival in Brunei Darussalam.

Methods:

The analysis was based on de-identified data of 263 childhood cancer for the period 2002 to 2017 retrieved from a population-based cancer registry. Overall survival was estimated using the Kaplan-Meier method. Univariate analysis, using the log-rank test, was used to examine the differences in survival between groups. Multivariate analysis, using the Cox Proportional Hazard (PH) regression model, was used to estimate the hazard ratios (HRs) and select the significant associated factors for childhood cancer patients’ survival.

Results:

The overall 1-, 5- and 10-year survival rates for all childhood cancers combined were 79.4%, 70.0% and 68.8% respectively. The most common types of cancer were leukemias, malignant epithelial neoplasms, lymphomas and tumours of the central nervous system (CNS). The 5-year survival estimates were highest for malignant epithelial neoplasms (84.2%) while the lowest was tumours of the CNS (44.1%). Log rank tests showed significant differences in childhood cancer patients’ survival between tumour types and period of diagnosis. In the Cox PH analysis, the presence of lymphomas, gonodal and germ cell neoplasms, and malignant epithelial neoplasms compared to leukemia; children aged 1-4 and 5-9 years compared to adolescents aged 15-19 years; and periods of diagnosis in 2002-2006 and 2007-2011 compared to 2012-2017 were significantly associated with lower hazard of death in this study.

Conclusion:

This study provides a baseline measurement of childhood cancer survival for monitoring and evaluation of cancer control programmes, to allow planning of cancer control program strategies such as surveillance, screening, and treatment to improve childhood survival rates in Brunei Darussalam.

Childhood cancers in a section of the South African private health sector: Analysis of medicines claims data

Background

Although childhood cancers are rare, increases in incidence have been observed in recent times. There is a paucity of data on the current incidence of childhood cancers in South Africa.

Aim

This study described the epidemiology of childhood cancers in a section of the private health sector of South Africa, using medicines claims data.

Setting

This study was designed on a nationally representative medicine claims database.

Method

A longitudinal open-cohort study employing children younger than 19 years and diagnosed with cancers between 2008 and 2017 was conducted using medicine claims data from a South African Pharmaceutical Benefit Management company. Cases were identified using International Classification of Diseases, Tenth Revision (ICD-10) diagnostic codes C00 to C97, together with a medicine claim reimbursed from oncology benefits. Crude incidence rates were calculated per million persons younger than 19 years on the database and standardised using the Segi 1960 world population. Temporal trends in incidence rates, analysed using the joinpoint regression, were reported as annual percentage changes (APCs).

Results

Overall, 173 new cases of childhood cancers were identified in the database, translating into an age-standardised incidence rate (ASR) of 82.3 per million. Annual incidence of cancer decreased from 76.7 per million in 2008 to 58.2 per million in 2017. More incident cases were identified in males (68.8%). The highest proportion of incident cases was recorded for leukaemias (39.9%), the 5–9 year age group (34.1%) and the Gauteng Province (49.7%).

Conclusion

The incidence of childhood cancers decreased over time in the section of the private health sector studied. Leukaemias were the major drivers of childhood cancer incidence.

Targeting the p53-MDM2 pathway for neuroblastoma therapy: Rays of hope

Despite being the subject of extensive research and clinical trials, neuroblastoma remains a major therapeutic challenge in pediatric oncology. The p53 protein is a central safeguard that protects cells against genome instability and malignant transformation. Mutated TP53 (the gene encoding p53) is implicated in many human cancers, but the majority of neuroblastomas have wild type p53 with intact transcriptional function. In fact, the TP53 mutation rate does not exceed 1-2% in neuroblastomas. However, overexpression of the murine double minute 2 (MDM2) gene in neuroblastoma is relatively common, and leads to inhibition of p53. It is also associated with other non-canonical p53-independent functions, including drug resistance and increased translation of MYCN and VEGF mRNA. The p53-MDM2 pathway in neuroblastoma is also modulated at several different molecular levels, including via interactions with other proteins (MYCN, p14^ARF). In addition, the overexpression of MDM2 in tumors is linked to a poorer prognosis for cancer patients. Thus, restoring p53 function by inhibiting its interaction with MDM2 is a potential therapeutic strategy for neuroblastoma. A number of p53-MDM2 antagonists have been designed and studied for this purpose. This review summarizes the current understanding of p53 biology and the p53-dependent and -independent oncogenic functions of MDM2 in neuroblastoma, and also the regulation of the p53-MDM2 axis in neuroblastoma. This review also highlights the use of MDM2 as a molecular target for the disease, and describes the MDM2 inhibitors currently being investigated in preclinical and clinical studies. We also briefly explain the various strategies that have been used and future directions to take in the development of effective MDM2 inhibitors for neuroblastoma.

Characteristics and trends of childhood cancer in Pudong, China, 2002-2015

Background

With the growing threat of cancer to children’s health, it is necessary to analyze characteristics and trends of childhood cancer to formulate better cancer prevention strategies.

Methods

Data on the 430 children with cancer during 2002–2015 were collected from the Pudong Cancer Registry, diagnosed with the International Classification of Diseases for Oncology and categorized according to the International Classification of Childhood Cancer. The incidence rate, trends over time, and survival of patients grouped by sex, age, and region were explored using the Kaplan-Meier, Cox regression, and Joinpoint Regression models.

Results

The crude childhood cancer incidence and world age-standardized incidence rate (ASR) were 115.1/1,000,000 and 116.3/1,000,000 person-years. The two most frequent cancers were leukemia (136/430, 31.63%, ASR, 37.8/1,000,000 person-years) and central nervous system (CNS) tumors (86/430, 20.00%, ASR, 22.9/1,000,000 person-years). Our findings indicate that the survival rate for children between 10 and 15 years of age was higher than that for 5–10; and the survival rate for children who had leukemia was higher than that of children with CNS tumors. However, the overall incidence of childhood cancer, and leukemia, CNS tumors remained relatively stable in Pudong between 2002 and 2015.

Conclusions

The incidence and survival rate for childhood cancer patients varied by age and cancer type. The overall trends of childhood cancer incidence remained relatively stable in Pudong from 2002 to 2015 even though socioeconomic development has been unprecedentedly fast in this region.