Parental concerns and vaccine hesitancy against COVID-19 vaccination for children in Greece: A cross-sectional survey

INTRODUCTION

Parental hesitancy against children's COVID-19 vaccination remains a challenge globally. Although many studies have explored parental hesitancy, less is known about parental intentions towards COVID-19 vaccination of 6-month to 4-year-old children who were the last age group that became eligible for vaccination and for older children throughout the Omicron predominance period.

METHODS

We conducted a nationwide cross-sectional survey from November to December 2022 in Greece. We aimed to explore parental COVID-19 vaccination intentions for their children, reasons against vaccination, and to estimate the association between parents' intentions and child and parental characteristics and parental attitudes towards COVID-19 vaccination.

RESULTS

Of 431 parents, 243 (56.4 %) had not or did not intend to vaccinate their children against COVID-19. Most parents were vaccinated against COVID-19 (64.7 % no booster; 14.2 % at least one booster). Among parents with children under the age of 5, 13.0 % intended to vaccinate their children against COVID-19, while 47.3 % of parents with children 5 years of age or older reported intention or had already completed vaccination. The most common reasons against COVID-19 vaccination were fear of side effects (32.9 %), perceived short length of clinical trials (29.2 %), and the child having previously contracted COVID-19 (12.0 %). The strongest factors associated with intention or already completed vaccination were parental own vaccination against COVID-19, using a pediatrician or a healthcare professional as the main source of vaccine-related information for their children, agreeing with their pediatrician regarding COVID-19 vaccination, and trusting official healthcare guidelines. Stratified analyses by the two children's age groups (<5 and 5 to 17) yielded similar estimates. Among parents who had not or did not intend to vaccinate their children, 11.9 % would do so if recommended by a pediatrician.

CONCLUSIONS

Our findings highlight the need to incentivize healthcare professionals and pediatricians to inform parents about vaccines, clarify misconceptions and address concerns.

KEAP1 mutation in lung adenocarcinoma promotes immune evasion and immunotherapy resistance

Lung cancer treatment has benefited greatly through advancements in immunotherapies. However, immunotherapy often fails in patients with specific mutations like KEAP1, which are frequently found in lung adenocarcinoma. We established an antigenic lung cancer model and used it to explore how Keap1 mutations remodel the tumor immune microenvironment. Using single-cell technology and depletion studies, we demonstrate that Keap1-mutant tumors diminish dendritic cell and T cell responses driving immunotherapy resistance. This observation was corroborated in patient samples. CRISPR-Cas9-mediated gene targeting revealed that hyperactivation of the NRF2 antioxidant pathway is responsible for diminished immune responses in Keap1-mutant tumors. Importantly, we demonstrate that combining glutaminase inhibition with immune checkpoint blockade can reverse immunosuppression, making Keap1-mutant tumors susceptible to immunotherapy. Our study provides new insight into the role of KEAP1 mutations in immune evasion, paving the way for novel immune-based therapeutic strategies for KEAP1-mutant cancers.

Impact of COVID-19 vaccination on parental and childhood stress levels in Greece

OBJECTIVE

The impact of COVID-19 vaccination on parental and childhood stress levels has not been thoroughly investigated. Our aim was to explore the above relationship and identify factors that may influence the dissemination of stress within the family during the pandemic.

SUBJECTS AND METHODS

A cross-sectional e-survey was conducted among a nationwide sample of parents in May 2021 in Greece. Parental stress was assessed using the Perceived Stress Scale (PSS) and the Revised Impact of Event Scale (IES-R) tools. Childhood mental well-being was evaluated with the Children's Revised Impact of Event 13 (CRIES 13) scale.

RESULTS

1,703 unique questionnaires were analyzed; 19.5% of responders were completely vaccinated, 23.7% were partially vaccinated, 38.3% were awaiting vaccination, and 18.5% were classified as vaccine-hesitant (15.2% would delay, and 3.3% refused the vaccination). Stress levels were significantly lower in completely or partially vaccinated parents than in vaccine-hesitant ones (p<0.001 for PSS/IES-R). Vaccination status emerged as a strong and independent predictor of PSS and IES-R. A significant decrease in PSS and IES-R scores was observed in 991 participants between March 2020 and May 2021 (p<0.001 for PSS/IES-R). Vaccine uptake was associated with lower PSS and IES-R scores, irrespective of the phase of the pandemic or other sociodemographic factors. The CRIES 13 score of the participant's children (n=2,969) was 19.4 ±14.9 and positively correlated with the PSS and IES-R scores. Children whose parents were vaccinated had lower stress levels than those of vaccine-hesitant parents (p<0.001).

CONCLUSIONS

Parental vaccination against COVID-19 is a significant stress and anxiety predictor for both parents and their offspring. Parental and childhood stress levels were correlated, while the effect of vaccination was independent of the pandemic phase. The campaigns to promote vaccine uptake against COVID-19 should also highlight its potential benefit on the psychological well-being of the family.

KMT2D deficiency drives lung squamous cell carcinoma and hypersensitivity to RTK-RAS inhibition

Lung squamous cell carcinoma (LUSC) represents a major subtype of lung cancer with limited treatment options. KMT2D is one of the most frequently mutated genes in LUSC (>20%), and yet its role in LUSC oncogenesis remains unknown. Here, we identify KMT2D as a key regulator of LUSC tumorigenesis wherein Kmt2d deletion transforms lung basal cell organoids to LUSC. Kmt2d loss increases activation of receptor tyrosine kinases (RTKs), EGFR and ERBB2, partly through reprogramming the chromatin landscape to repress the expression of protein tyrosine phosphatases. These events provoke a robust elevation in the oncogenic RTK-RAS signaling. Combining SHP2 inhibitor SHP099 and pan-ERBB inhibitor afatinib inhibits lung tumor growth in Kmt2d-deficient LUSC murine models and in patient-derived xenografts (PDXs) harboring KMT2D mutations. Our study identifies KMT2D as a pivotal epigenetic modulator for LUSC oncogenesis and suggests that KMT2D loss renders LUSC therapeutically vulnerable to RTK-RAS inhibition.

Child abuse experience, training, knowledge, and attitude of healthcare professionals in sixty hospitals in Greece

OBJECTIVE

This study aims to record the overall perception of healthcare professionals on child abuse and identify potential affecting factors in a nationwide scale in Greece as well as to provide information that might be useful for future educational actions.

MATERIALS AND METHODS

A total of 1,185 healthcare professionals in 60 hospitals with pediatric departments across Greece participated in this cross-sectional study. Participants included pediatricians, pediatric surgeons, residents, nurses, psychiatrists, psychologists, and social workers. Sections under investigation involved experience and training in child abuse, knowledge of formal and judicial issues, clinical knowledge, and self-assessment.

RESULTS

Although more than half of the participants had confronted child abuse (n=712, 60.08%), only 273 (38.34% of them) submitted reports. One third of participants reported that they had received some training (n=440, 37.13%), mainly of postgraduate nature and based on personal initiative. Of those who reported child abuse, 175 (64.10%) had been trained. Each professional category was aware of topics regarding its own interest, without adequate knowledge of other disciplines. One third of psychiatrists, psychologists, and social workers felt confident in discussing with children and parents. Relevant scores were lower in the other categories. The lower scores were recorded among nurses and residents. The training deficit and reluctance to engage with judicial issues were the main causes of avoidance to deal with child abuse.

CONCLUSIONS

Focused and organized training in child abuse is crucial to create reliable professionals in the field. The internet is a considerably helpful tool. Professionalism must characterize knowledge and practice in child abuse at the same level as in other medical topics. Motivation to engage should be early inspired and developed during the graduate years.

Healthcare workers' hand hygiene knowledge and compliance evaluation, in a Greek university hospital

OBJECTIVE

Healthcare associated infections affect both patients and employees, in terms of morbidity, mortality, and financial costs. Routine hand hygiene is the most important factor against this pestilence. Hand hygiene knowledge and compliance of healthcare workers are considered poor worldwide. Herein, we aimed to measure knowledge and compliance with hand hygiene of the healthcare workers at a university hospital.

MATERIALS AND METHODS

The "WHO hand hygiene knowledge questionnaire for healthcare workers" was translated in the Greek language, and was validated linguistically, culturally, and psychometrically. Reliability, content, construct, and convergent validity were measured. A survey on hand hygiene knowledge, and compliance, based on this questionnaire, was conducted on 439 employees.

RESULTS

The translated questionnaire presented good reliability, with Guttman's Lambda-6 evaluation (0.7). Content Validity Ratio was 84.6%. Confirmatory and exploratory factor analysis showed moderate construct validity. Convergent validity showed low correlation between the questionnaire items. Regarding the answers received, it was found that only 55.3% of the respondents received formal training on hand hygiene during the last three years prior to the study. Furthermore, 74.0% of them used alcohol-based solutions routinely. Only 54.3% of the participants presented an acceptable level of hand hygiene knowledge.

CONCLUSIONS

The translation and validation of the WHO questionnaire resulted in an acceptable, reliable, and valid instrument. The survey showed that hand hygiene is rather a matter of habit, than of knowledge, and that there is great need of more organized training.

Prediction of complicated appendicitis risk in children

OBJECTIVE

We aimed to predict the risk of complicated appendicitis in children, constructing a risk-based prediction tool with the optimal combination of sensitivity and specificity outcomes.

PATIENTS AND METHODS

This is a prospective study on a random sample of children with acute appendicitis who underwent appendectomy. Clinical examination, history, routine laboratory tests, Alvarado and pediatric appendicitis scores, operative and histopathological findings were taken into consideration. The predictive ability of the outcome variables was assessed by the Receiver Operating Characteristics (ROC) analysis. The overall predictive ability and determination of the best cut-off value (the higher sum of sensitivity plus specificity) were calculated. A Classification and Regression Tree (CRT) was used to create a multi-level classification algorithm. The model was set to predict the outcome of complicated appendicitis, considering as potential predictors the demographic characteristics, the clinical findings, and the outcome parameters.

RESULTS

The various combinations of clinical and laboratory parameters did not improve their overall diagnostic ability. However, the CRT analysis resulted in a short classification algorithm based on the Pediatric appendicitis score, neutrophils percentage and the CRP. This model yielded a significantly better predictive ability than all the other combinations of the outcome parameters. The application of the model would predict complicated appendicitis with 90% sensitivity and 78.6% specificity.

CONCLUSIONS

The constructed predictive model may be a useful tool for daily practical use by the clinician, especially in areas where modern diagnostic imaging facilities are absent or not always available. Clinical evaluation and close follow-up remain the more accurate preoperative method to decide the performance and timing of appendectomy.

Rlf-Mycl Gene Fusion Drives Tumorigenesis and Metastasis in a Mouse Model of Small Cell Lung Cancer

Small cell lung cancer (SCLC) has limited therapeutic options and an exceptionally poor prognosis. Understanding the oncogenic drivers of SCLC may help define novel therapeutic targets. Recurrent genomic rearrangements have been identified in SCLC, most notably an in-frame gene fusion between RLF and MYCL found in up to 7% of the predominant ASCL1-expressing subtype. To explore the role of this fusion in oncogenesis and tumor progression, we used CRISPR/Cas9 somatic editing to generate a Rlf-Mycl-driven mouse model of SCLC. RLF-MYCL fusion accelerated transformation and proliferation of murine SCLC and increased metastatic dissemination and the diversity of metastatic sites. Tumors from the RLF-MYCL genetically engineered mouse model displayed gene expression similarities with human RLF-MYCL SCLC. Together, our studies support RLF-MYCL as the first demonstrated fusion oncogenic driver in SCLC and provide a new preclinical mouse model for the study of this subtype of SCLC.

SIGNIFICANCE

The biological and therapeutic implications of gene fusions in SCLC, an aggressive metastatic lung cancer, are unknown. Our study investigates the functional significance of the in-frame RLF-MYCL gene fusion by developing a Rlf-Mycl-driven genetically engineered mouse model and defining the impact on tumor growth and metastasis. This article is highlighted in the In This Issue feature, p. 2945.

Targeting the Atf7ip-Setdb1 Complex Augments Antitumor Immunity by Boosting Tumor Immunogenicity

Substantial progress has been made in understanding how tumors escape immune surveillance. However, few measures to counteract tumor immune evasion have been developed. Suppression of tumor antigen expression is a common adaptive mechanism that cancers use to evade detection and destruction by the immune system. Epigenetic modifications play a critical role in various aspects of immune invasion, including the regulation of tumor antigen expression. To identify epigenetic regulators of tumor antigen expression, we established a transplantable syngeneic tumor model of immune escape with silenced antigen expression and used this system as a platform for a CRISPR-Cas9 suppressor screen for genes encoding epigenetic modifiers. We found that disruption of the genes encoding either of the chromatin modifiers activating transcription factor 7-interacting protein (Atf7ip) or its interacting partner SET domain bifurcated histone lysine methyltransferase 1 (Setdb1) in tumor cells restored tumor antigen expression. This resulted in augmented tumor immunogenicity concomitant with elevated endogenous retroviral (ERV) antigens and mRNA intron retention. ERV disinhibition was associated with a robust type I interferon response and increased T-cell infiltration, leading to rejection of cells lacking intact Atf7ip or Setdb1. ATF7IP or SETDB1 expression inversely correlated with antigen processing and presentation pathways, interferon signaling, and T-cell infiltration and cytotoxicity in human cancers. Our results provide a rationale for targeting Atf7ip or Setdb1 in cancer immunotherapy.

The prolonged effects of COVID-19. A new "threat"?

Coronavirus 'long-haulers" currently represent a significant public health concern. Recent reports suggest that persistent effects of COVID-19, such as fatigue, dyspnea, chest pain, anxiety, depression, arthralgia, may last for months and lead to a decline in quality of life. Risk factors for long COVID are still not very well understood. Survivors suffer from ongoing symptoms. This new entity highlights the need for a multidisciplinary approach that would enable closer monitoring of affected patients and implementation of measures that could reduce the impact of the pandemic on the overall patient wellbeing after the resolution of acute symptoms.

Anxiety and depression among parents of children with mild head injuries

OBJECTIVE

Parents who escort their children in hospital may present emotional disorders. Personnel pressure and reduced time availability often prevent their detection, reducing the efficacy of parental support. We aimed to identify the prevalence and assess the severity of anxiety and depression among parents of children with mild head injuries who were admitted for a 24-hour observation period in a pediatric hospital, and to detect possible determinants for the severe forms of the two emotional disorders.

PATIENTS AND METHODS

A cohort of 163 parents participated in our survey for anxiety and depression with the Hospital Anxiety and Depression Scale (HADS). Associations of the two disorders with factors of possible prognostic significance, such as gender, age, family status, residence, education, employment, and income were studied. Multinomial logistic regression analysis, with anxiety and depression of the parents as dependent variables, was performed.

RESULTS

More than half of parents presented clinical scores for both disorders. Female gender, distant residence, high school level education, unstable employment, and low income were determinants for severe anxiety. Depression in fathers was five times more likely to be severe than subclinical compared to mothers.

CONCLUSIONS

Psychological support and guidance of parents who escort their children with mild head injuries are mandatory. When accredited trauma support is not available, it is the hospital personnel who must identify and support these parents.

BRG1 Loss Predisposes Lung Cancers to Replicative Stress and ATR Dependency

Inactivation of SMARCA4/BRG1, the core ATPase subunit of mammalian SWI/SNF complexes, occurs at very high frequencies in non-small cell lung cancers (NSCLC). There are no targeted therapies for this subset of lung cancers, nor is it known how mutations in BRG1 contribute to lung cancer progression. Using a combination of gain- and loss-of-function approaches, we demonstrate that deletion of BRG1 in lung cancer leads to activation of replication stress responses. Single-molecule assessment of replication fork dynamics in BRG1-deficient cells revealed increased origin firing mediated by the prelicensing protein, CDC6. Quantitative mass spectrometry and coimmunoprecipitation assays showed that BRG1-containing SWI/SNF complexes interact with RPA complexes. Finally, BRG1-deficient lung cancers were sensitive to pharmacologic inhibition of ATR. These findings provide novel mechanistic insight into BRG1-mutant lung cancers and suggest that their dependency on ATR can be leveraged therapeutically and potentially expanded to BRG1-mutant cancers in other tissues. SIGNIFICANCE: These findings indicate that inhibition of ATR is a promising therapy for the 10% of non-small cell lung cancer patients harboring mutations in SMARCA4/BRG1. GRAPHICAL ABSTRACT: http://cancerres.aacrjournals.org/content/canres/80/18/3841/F1.large.jpg.

Epigenetic CRISPR Screens Identify Npm1 as a Therapeutic Vulnerability in Non-Small Cell Lung Cancer

Despite advancements in treatment options, the overall cure and survival rates for non-small cell lung cancers (NSCLC) remain low. While small-molecule inhibitors of epigenetic regulators have recently emerged as promising cancer therapeutics, their application in patients with NSCLC is limited. To exploit epigenetic regulators as novel therapeutic targets in NSCLC, we performed pooled epigenome-wide CRISPR knockout screens in vitro and in vivo and identified the histone chaperone nucleophosmin 1 (Npm1) as a potential therapeutic target. Genetic ablation of Npm1 significantly attenuated tumor progression in vitro and in vivo. Furthermore, KRAS-mutant cancer cells were more addicted to NPM1 expression. Genetic ablation of Npm1 rewired the balance of metabolism in cancer cells from predominant aerobic glycolysis to oxidative phosphorylation and reduced the population of tumor-propagating cells. Overall, our results support NPM1 as a therapeutic vulnerability in NSCLC. SIGNIFICANCE: Epigenome-wide CRISPR knockout screens identify NPM1 as a novel metabolic vulnerability and demonstrate that targeting NPM1 is a new therapeutic opportunity for patients with NSCLC.

Pilot trial of albuterol in spinal muscular atrophy

The aim of this pilot study was to evaluate the effect of albuterol in children with spinal muscular atrophy (SMA). Thirteen patients (five with SMA II and eight with SMA III) were given oral albuterol for 6 months. There was a significant increase in myometry, forced vital capacity, and lean body mass between the baseline and the 6-month assessments (p < 0.05). Albuterol may have a beneficial effect in patients with SMA without causing any significant adverse effects. Larger randomized, placebo-controlled trials are needed to confirm this observation.

Prevalence of asthma among schoolchildren in Patras, Greece: three surveys over 20 years

BACKGROUND

The aim of the present study was to compare the prevalence of asthma among schoolchildren in 1978, 1991, and 1998 in Patras, Greece.

METHODS

The study populations of the three comparable cross sectional surveys comprised third and fourth grade public school children in Patras, Greece. Sample sizes in 1978, 1991, and 1998 were 3735, 2952 and 3397 children and response rates were 80.4%, 81.9%, and 90.6%, respectively. Prevalence of current, non-current, and lifetime asthma or recurrent wheezing was determined by parental questionnaire. Personal communication with the parents of asthmatic children in 1991 and 1998 provided data on lost schooldays.

RESULTS

Prevalence rates of current asthma or wheezing in 1978, 1991, and 1998 were 1.5%, 4.6%, and 6.0%, respectively (1978–91: p=0.01, 1991–98: p=0.02, 1978–98: p=0.03). Lifetime prevalences of asthma or wheezing in 1991 and 1998 were 8.0% and 9.6%, respectively (p=0.03). Current diagnosed asthma increased proportionally to diagnosed wheezing during 1991–98. The number of schooldays lost in the previous 2 years because of asthma did not change (p>0.1) between 1991 (0.31 per child) and 1998 (0.34 per child).

CONCLUSIONS

Our results support a true increase in the prevalence of current and lifetime asthma in the last 20 years among pre-adolescent children in Patras, Greece.

Prevalence of asthma among schoolchildren in Patras, Greece: three surveys over 20 years

BACKGROUND

The aim of the present study was to compare the prevalence of asthma among schoolchildren in 1978, 1991, and 1998 in Patras, Greece.

METHODS

The study populations of the three comparable cross sectional surveys comprised third and fourth grade public school children in Patras, Greece. Sample sizes in 1978, 1991, and 1998 were 3735, 2952 and 3397 children and response rates were 80.4%, 81.9%, and 90.6%, respectively. Prevalence of current, non-current, and lifetime asthma or recurrent wheezing was determined by parental questionnaire. Personal communication with the parents of asthmatic children in 1991 and 1998 provided data on lost schooldays.

RESULTS

Prevalence rates of current asthma or wheezing in 1978, 1991, and 1998 were 1.5%, 4.6%, and 6.0%, respectively (1978-91: p=0.01, 1991-98: p=0.02, 1978-98: p=0.03). Lifetime prevalences of asthma or wheezing in 1991 and 1998 were 8.0% and 9.6%, respectively (p=0.03). Current diagnosed asthma increased proportionally to diagnosed wheezing during 1991-98. The number of schooldays lost in the previous 2 years because of asthma did not change (p>0.1) between 1991 (0.31 per child) and 1998 (0.34 per child).

CONCLUSIONS

Our results support a true increase in the prevalence of current and lifetime asthma in the last 20 years among pre-adolescent children in Patras, Greece.