1.Diagnostic and prognostic value of differential expression of Cyclin D1 and p53 in eyelid tumors
Minli MA ; Jingjing ZHANG ; Ying LIU ; Hongyan SONG ; Fang LIN ; Qi MA
International Eye Science 2026;26(3):511-517
AIM: To investigate the diagnostic and prognostic value of differential expression of Cyclin D1 and p53 in eyelid tumors.METHODS: This retrospective study enrolled patients who underwent surgical resection for eyelid tumors at our hospital between March 2018 and March 2023. Participants were categorized into benign and malignant groups based on tumor characteristics. Clinical data were collected. Genetic data for eyelid tumors were obtained from the GEO database, and differential gene analysis, including volcano plot visualization and KEGG pathway enrichment analysis, was performed using the Sangerbox 3.0 platform. Immunohistochemistry was used to detect the expression levels of Cyclin D1, p53, and BAX in tissue samples. Correlations with clinical features were analyzed using Spearman analysis, and prognostic factors were identified via Logistic regression analysis.RESULTS: This study included 69 patients with eyelid tumors(78 eyes), categorized into a benign group(37 patients, 41 eyes)and a malignant group(32 patients, 37 eyes)based on tumor characteristics. There were significant differences between the two groups in histological subtype, TNM staging, vascular invasion, differentiation status, and local infiltration(all P<0.05). Among benign tumors: pigmented nevi in 11 eyes(27%), hemangiomas in 9 eyes(22%), squamous cell papillomas in 5 eyes(12%), epidermoid cysts in 5 eyes(12%), seborrheic keratoses in 4 eyes(10%), neurofibromas in 3 eyes(7%), and both calcifying epithelioma and xanthelasma in 2 eyes each(5%); among malignant tumors: basal cell carcinoma in 18 eyes(49%), meibomian gland carcinoma in 8 eyes(22%), squamous cell carcinoma in 5 eyes(14%), sebaceous gland carcinoma in 4 eyes(11%), lymphoma and malignant melanoma each in 1 eye(3%). At the follow-up cutoff date of March 2025, the 2-year survival rate in the benign group(95%)was significantly higher than that in the malignant group(78%; P<0.05). Bioinformatics analysis identified 4 103 differentially expressed genes, including Cyclin D1, p53, and BAX, which were predominantly involved in pathways such as the p53 signaling pathway and calcium-related signaling. Spearman analysis revealed that local invasion(rs=0.71, P<0.05)and TNM stage(rs=0.73, P<0.05)correlated with Cyclin D1 expression; local invasion(rs=0.76, P<0.05)and histological subtype(rs=0.65, P<0.05)correlated with p53 expression. Logistic regression results indicated that Cyclin D1, p53, TNM staging, and local invasion were prognostic risk factors. ROC curve analysis demonstrated that the combined detection of these four indicators had the highest predictive value for prognosis(AUC=0.83).CONCLUSION: High expression of cyclin D1 and p53 serves as molecular markers for distinguishing benign from malignant eyelid tumors and assessing prognosis. Combined detection of these markers with TNM staging and local invasion demonstrates high predictive value for prognosis.
2.Analysis of postoperative lipid control status and influencing factors in patients undergoing coronary artery bypass grafting surgery
Xiaoyu XU ; Zehua ZHANG ; Tianyu JIA ; Bangrong SONG ; Ran DONG ; Yang LIN
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2026;33(04):605-610
Objective To understand the current status of low-density lipoprotein cholesterol (LDL-C) control in patients after coronary artery bypass grafting (CABG). Methods Clinical data of patients who underwent isolated CABG in Beijing Anzhen Hospital in 2023 were collected. All patients returned to our hospital approximately one year after surgery (10-13 months) for a lipid level recheck. We analyzed their LDL-C attainment status and influencing factors. Patients were categorized into two groups based on whether their LDL-C met the target: a LDL-C attainment group and a LDL-C non-attainment group. Results This study included 1456 patients who underwent CABG, including 320 females and 1136 males, with an average age of (61.41±9.12) years. One year post-surgery, 234 patients achieved the LDL-C target, with an attainment rate of 16.07%. The proportion of patients in the LDL-C attainment group who were ultra-high risk (77.35% vs. 92.06%, P<0.001), female (16.24% vs. 23.08%, P=0.021), and those with comorbid hypertension (55.98% vs. 63.18%, P=0.038) was significantly lower than those in the LDL-C non-attainment group. Additionally, the baseline body mass index (BMI) [(25.37±3.24) kg/m2 vs. (26.03±3.56) kg/m2, P=0.017], total cholesterol levels [(3.30±0.84) mmol/L vs. (4.01±1.03) mmol/L, P<0.001], LDL-C [(1.62±0.63) mmol/L vs. (2.25±0.85) mmol/L, P<0.001], and high-density lipoprotein cholesterol [(0.98±0.26) mmol/L vs. (1.02±0.24) mmol/L, P=0.049] upon admission in the attainment group were all lower than those in the non-attainment group. Moreover, the lipid-lowering drug usage rate in the attainment group (100.00% vs. 96.24%, P=0.003) and the proportion using two types of drugs together (25.21% vs. 10.72%, P<0.001) were both higher than those in the non-attainment group, while the statin monotherapy rate was lower than that in the non-attainment group (74.79% vs. 85.19%, P<0.001). Logistic regression analysis showed that baseline BMI (OR=0.928, P=0.012) and baseline LDL-C levels (OR=0.207, P<0.001), patient cardiovascular risk stratification (OR=0.155, P<0.001) and lipid-lowering drug treatment regimen (OR=3.758, P<0.001) are significant factors affecting the LDL-C control status. Conclusion The LDL-C compliance rate of patients undergoing CABG is at a relatively low level 1 year after surgery. Patients with very high risk of atherosclerotic cardiovascular disease, high baseline LDL-C levels, and overweight or obesity should be strengthened lipid management. For these patients, the intensity of lipid-lowering drug use or combination medication should be increased upon discharge.
3.Molecular subtype-driven surgical concepts and clinical application in gliomas
Haihui JIANG ; Shouzan ZHANG ; Song LIN
Chinese Journal of Surgery 2026;64(1):70-78
Objective:To compare the prognostic impact of different extents of resection among patients with molecularly defined glioma subtypes.Methods:This retrospective cohort study included 1191 glioma patients who underwent surgical treatment at Beijing Tiantan Hospital, Capital Medical University, between January 2011 and January 2021. The cohort comprised 692 males and 499 females, with an age of (44.5±11.9) years (range: 18 to 75 years). Tumors were classified according to the 2021 WHO Classification of Tumors of the Central Nervous System (5th edition), and the extent of resection was assessed using postoperative MRI. Kaplan-Meier survival analyses and log-rank tests were used to evaluate the effects of resection extent on progression-free survival (PFS) and overall survival (OS) within each molecular subtype. Cox proportional hazards models were applied to identify independent prognostic factors for PFS and OS. Follow-up was completed in January 2024.Results:Among the 1 191 patients, 291 (24.43%) had isocitrate dehydrogenase( IDH)-mutant, 1p/19q-codeleted oligodendroglioma (OG), 338 (28.37%) had IDH-mutant astrocytoma, and 562 (47.19%) had IDH-wild-type glioblastoma (GBM). Patients with IDH-mutant, 1p/19q-codeleted OG had the best prognosis, with median PFS and OS not reached. In IDH-wild type GBM, the median PFS and OS were 12.0 and 24.0 months, respectively; in IDH-mutant astrocytoma, the median PFS and OS were 61.0 and 102.0 months. Differences in PFS and OS among the three groups were statistically significant ( P<0.01). In patients with IDH-wild type GBM, supratotal resection yielded better PFS and OS than gross total resection ( P<0.05). In IDH-mutant astrocytoma, PFS and OS did not differ between supratotal and gross total resection ( P>0.05), while gross total resection was superior to subtotal resection ( P<0.05). In IDH-mutant, 1p/19q-codeleted OG, PFS and OS did not differ significantly across resection categories ( P>0.05). Multivariate analyses identified age, Karnofsky Performance Status, extent of resection, tumor grade, and O 6-methylguanine-DNA methyltransferase promoter methylation status as independent predictors of both PFS and OS ( P<0.05). Conclusions:For IDH-wild type GBM, maximal efforts should be made to achieve supratotal resection. For IDH-mutant astrocytoma, maximal safe resection is recommended with preservation of neurological function. For IDH-mutant, 1p/19q-codeleted oligodendroglioma, a relatively conservative approach may be appropriate to protect neurological function.
4.Expert consensus on neoadjuvant PD-1 inhibitors for locally advanced oral squamous cell carcinoma (2026)
LI Jinsong ; LIAO Guiqing ; LI Longjiang ; ZHANG Chenping ; SHANG Chenping ; ZHANG Jie ; ZHONG Laiping ; LIU Bing ; CHEN Gang ; WEI Jianhua ; JI Tong ; LI Chunjie ; LIN Lisong ; REN Guoxin ; LI Yi ; SHANG Wei ; HAN Bing ; JIANG Canhua ; ZHANG Sheng ; SONG Ming ; LIU Xuekui ; WANG Anxun ; LIU Shuguang ; CHEN Zhanhong ; WANG Youyuan ; LIN Zhaoyu ; LI Haigang ; DUAN Xiaohui ; YE Ling ; ZHENG Jun ; WANG Jun ; LV Xiaozhi ; ZHU Lijun ; CAO Haotian
Journal of Prevention and Treatment for Stomatological Diseases 2026;34(2):105-118
Oral squamous cell carcinoma (OSCC) is a common head and neck malignancy. Approximately 50% to 60% of patients with OSCC are diagnosed at a locally advanced stage (clinical staging III-IVa). Even with comprehensive and sequential treatment primarily based on surgery, the 5-year overall survival rate remains below 50%, and patients often suffer from postoperative functional impairments such as difficulties with speaking and swallowing. Programmed death receptor-1 (PD-1) inhibitors are increasingly used in the neoadjuvant treatment of locally advanced OSCC and have shown encouraging efficacy. However, clinical practice still faces key challenges, including the definition of indications, optimization of combination regimens, and standards for efficacy evaluation. Based on the latest research advances worldwide and the clinical experience of the expert group, this expert consensus systematically evaluates the application of PD-1 inhibitors in the neoadjuvant treatment of locally advanced OSCC, covering combination strategies, treatment cycles and surgical timing, efficacy assessment, use of biomarkers, management of special populations and immune related adverse events, principles for immunotherapy rechallenge, and function preservation strategies. After multiple rounds of panel discussion and through anonymous voting using the Delphi method, the following consensus statements have been formulated: 1) Neoadjuvant therapy with PD-1 inhibitors can be used preoperatively in patients with locally advanced OSCC. The preferred regimen is a PD-1 inhibitor combined with platinum based chemotherapy, administered for 2-3 cycles. 2) During the efficacy evaluation of neoadjuvant therapy, radiographic assessment should follow the dual criteria of Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 and immune RECIST (iRECIST). After surgery, systematic pathological evaluation of both the primary lesion and regional lymph nodes is required. For combination chemotherapy regimens, PD-L1 expression and combined positive score need not be used as mandatory inclusion or exclusion criteria. 3) For special populations such as the elderly (≥ 70 years), individuals with stable HIV viral load, and carriers of chronic HBV/HCV, PD-1 inhibitors may be used cautiously under the guidance of a multidisciplinary team (MDT), with close monitoring for adverse events. 4) For patients with a poor response to neoadjuvant therapy, continuation of the original treatment regimen is not recommended; the subsequent treatment plan should be adjusted promptly after MDT assessment. Organ transplant recipients and patients with active autoimmune diseases are not recommended to receive neoadjuvant PD-1 inhibitor therapy due to the high risk of immune related activation. Rechallenge is generally not advised for patients who have experienced high risk immune related adverse events such as immune mediated myocarditis, neurotoxicity, or pneumonitis. 5) For patients with a good pathological response, individualized de escalation surgery and function preservation strategies can be explored. This consensus aims to promote the standardized, safe, and precise application of neoadjuvant PD-1 inhibitor strategies in the management of locally advanced OSCC patients.
5.Molecular subtype-driven surgical concepts and clinical application in gliomas
Haihui JIANG ; Shouzan ZHANG ; Song LIN
Chinese Journal of Surgery 2026;64(1):70-78
Objective:To compare the prognostic impact of different extents of resection among patients with molecularly defined glioma subtypes.Methods:This retrospective cohort study included 1191 glioma patients who underwent surgical treatment at Beijing Tiantan Hospital, Capital Medical University, between January 2011 and January 2021. The cohort comprised 692 males and 499 females, with an age of (44.5±11.9) years (range: 18 to 75 years). Tumors were classified according to the 2021 WHO Classification of Tumors of the Central Nervous System (5th edition), and the extent of resection was assessed using postoperative MRI. Kaplan-Meier survival analyses and log-rank tests were used to evaluate the effects of resection extent on progression-free survival (PFS) and overall survival (OS) within each molecular subtype. Cox proportional hazards models were applied to identify independent prognostic factors for PFS and OS. Follow-up was completed in January 2024.Results:Among the 1 191 patients, 291 (24.43%) had isocitrate dehydrogenase( IDH)-mutant, 1p/19q-codeleted oligodendroglioma (OG), 338 (28.37%) had IDH-mutant astrocytoma, and 562 (47.19%) had IDH-wild-type glioblastoma (GBM). Patients with IDH-mutant, 1p/19q-codeleted OG had the best prognosis, with median PFS and OS not reached. In IDH-wild type GBM, the median PFS and OS were 12.0 and 24.0 months, respectively; in IDH-mutant astrocytoma, the median PFS and OS were 61.0 and 102.0 months. Differences in PFS and OS among the three groups were statistically significant ( P<0.01). In patients with IDH-wild type GBM, supratotal resection yielded better PFS and OS than gross total resection ( P<0.05). In IDH-mutant astrocytoma, PFS and OS did not differ between supratotal and gross total resection ( P>0.05), while gross total resection was superior to subtotal resection ( P<0.05). In IDH-mutant, 1p/19q-codeleted OG, PFS and OS did not differ significantly across resection categories ( P>0.05). Multivariate analyses identified age, Karnofsky Performance Status, extent of resection, tumor grade, and O 6-methylguanine-DNA methyltransferase promoter methylation status as independent predictors of both PFS and OS ( P<0.05). Conclusions:For IDH-wild type GBM, maximal efforts should be made to achieve supratotal resection. For IDH-mutant astrocytoma, maximal safe resection is recommended with preservation of neurological function. For IDH-mutant, 1p/19q-codeleted oligodendroglioma, a relatively conservative approach may be appropriate to protect neurological function.
6.Mosquito monitoring and influence of meteorological factors on mosquito density around Beijing Capital International Airport, 2016-2022
Ran FENG ; Tie-zheng MA ; Si-jie ZHU ; Bo TIAN ; Fei QUAN ; Zhi-lin WU ; Xiao-tao LIU ; Fu-yuan ZHANG ; Song-jian ZHANG
Acta Parasitologica et Medica Entomologica Sinica 2026;33(1):40-48
Objective To understand mosquito density, species composition, and seasonal variations around the Beijing Capital International Airport(BCIA)and provide scientific evidence for mosquito-borne disease prevention and control. Methods Meteorological data were collected from 2016 to 2022, and mosquito density was monitored at seven surveillance sites around the BCIA from May to October each year using CO2-baited mosquito traps to analyze the relationship between mosquito density and meteorological factors. Results In total,68 518 female mosquitoes were captured, with a mosquito density of 10.20 per light · hour. The dominant species was Culex pipiens pallens(73.90%), followed by Aedes albopictus(9.71%)and Ae. vexans(9.29%);the mosquito density was highest in 2016(14.8 per light·hour)and lowest in 2022(4.46 per light·hour). Significant statistical differences were observed in mosquito density among different species(F=18.118, P<0.05). The density of Cx. pipiens pallens and other mosquito species showed a mutually exclusive trend; the peak of mosquito density varied based on years and habitats, with significant statistical differences in mosquito density among different habitats(F=8.504, P<0.05). The highest mosquito density was observed near the Wenyu River(21.50 per light·hour), whereas the lowest was recorded at the BCIA construction site(2.44 per light· hour). The monthly average temperature(r=0.595), monthly average highest temperature(r=0.575), and monthly average lowest temperature(r=0.624)showed moderate positive correlations, whereas the monthly average air pressure(r=-0.484)showed a moderate negative correlation. The monthly average minimum temperature was included in the regression model(F=25.575, P<0.000), and the equation Y=1.029X4-8.181 was used. The monthly average air pressure 2 months prior(b=-2.418, β=-1.619, P<0.05)and the monthly average relative humidity(b=-0.739, β=-1.201, P<0.05)significantly negatively predicted the mosquito density. Notably, the regression equation used was y=2526.170+(-2.418)X9+(-0.739)X13. The exposure-response analysis revealed that the density of mosquitoes was not linearly related to the average monthly air pressure, rainfall, and duration of sunshine. Conclusions The dominant mosquito species around the BCIA was Cx. pipiens pallens, Ae. albopictus, and Ae. vexans. During the control of Cx. pipiens pallens, the impact on other mosquito species must also be considered. Environmental management, breeding sites, and scientific use of pesticides should be prioritized based on the activity periods of mosquitoes. Further studies on mosquitoes and meteorological factors should be conducted to provide references and novel avenues for mosquito control.
7.Intravesical instillation of urokinase plus heparin sodium for bladder clot irrigation:preliminary experience with 3 cases
Qi'ao JING ; Shengtong YE ; Jiaying SONG ; Tongjingzhi LIN ; Qi ZHANG ; Zicheng LI ; Yang SU ; Zhihui ZOU ; Chaozhao LIANG
Journal of Modern Urology 2026;31(1):57-59
Objective To evaluate the feasibility of intravesical instillation of urokinase and heparin sodium in the treatment of bladder clot irrigation.Methods This report discusses the diagnosis and treatment of three patients with bladder blood clot tamponade confirmed by abdominal and pelvic computed tomography(CT)scans enrolled from our hospital during Jun. to Sep. 2024, and discuss the relevant literature.Results A solution containing urokinase(20 000 IU)and heparin sodium(125 000 U)was instilled through a three-way catheter and retained for 30 minutes before drainage. Complete clot dissolution was achieved in all cases, with immediate relief of hypogastric distension and pain. Post-procedural CT showed restored bladder lumen patency. Hemoglobin levels decreased by 2-5 g/L without complications.Conclusion This preliminary trial demonstrated that intravesical instillation of urokinase-heparin provides a safe and effective minimally invasive alternative for bladder clot in irrigation cases.
8.Diagnostic value of cardiac color Doppler ultrasound for left ventricular hypertrophy complicated left heart failure
Qun-xing LYU ; Song-mei ZHANG ; Peng-sheng LIN ; Tan-shou CHEN
Chinese Journal of cardiovascular Rehabilitation Medicine 2025;34(2):184-189
Objective:To explore the diagnostic value of cardiac color Doppler ultrasonography for left ventricular hypertrophy(LVH)complicated left heart failure(LHF).Methods:A total of 117 LVH patients complicated LHF admitted in Ningde City Hospital Affiliated to Ningde Normal College between January 2019 and January 2023(heart failure group)and 100 healthy people(control group)who underwent general physical examination in our hospital simultaneously were selected for the study.Left ventricular ejection fraction(LVEF),left atrial diameter(LAD),left ventricular end-diastolic diameter(LVEDd),early diastolic peak flow velocity/late diastolic peak flow velocity(E/A)were measured by cardiac color Doppler ultrasound in two groups.Receiver operating charac-teristic(ROC)curve was used to analyze the diagnostic value of cardiac color Doppler ultrasound indexes for LVH complicated LHF.In addition,the 117 patients with LVH and LHF were divided into mild group(n=54)and moderate to severe group(n=63)according to cardiac function class.Spearman correlation analysis was used to an-alyze the associationof cardiac color ultrasound parameters with cardiac function class.Results:Compared with par-ticipants in control group,those in heart failure group had significant lower LVEF[(47.88±4.75)% vs.(69.81±5.64)%],and significant higher LAD[(44.03±4.88)mm vs.(27.56±2.76)mm vs.],LVEDd[(55.68±5.04)mm vs.(42.19±1.38)mm],E/A[(13.04±3.58)vs.(6.60±1.67)](P<0.001 all).ROC analysis indicated that the area under the curve(AUC)of the combination of various parameters of cardiac ultrasound for diagnosing LVH with LHF was significantly higher than those of the single tests(Combined detection:AUC=0.901,95%CI 0.853~0.937 vs LVEF:AUC=0.644,95%CI 0.577~0.708,LAD:AUC=0.703,95%CI 0.637~0.763,LVEDd:AUC=0.633,95%CI 0.565~0.697,E/A:AUC=0.748,95%CI 0.685~0.804,Z=7.062,5.764,7.292,4.864,P<0.001 all).Compared with patients in mild group,those in moderate to severe group had signifi-cant lower LVEF[(45.67±3.37)% vs.(50.47±4.86)%],and significant higher LAD[(46.31±4.42)mm vs.(41.36±3.98)mm],LVEDd[(60.09±1.75)mm vs.(50.53±1.41)mm]and E/A[(13.99±2.96)vs.(11.93±3.92)](P<0.01 all).Spearman correlation analysis indicated that LVEF was negatively correlated with cardiac function class(r=-0.474),while LAD(r=0.511),LVEDd(r=0.863),E/A(r=0.269)were positively corre-lated with cardiac function class(P<0.01 all).Conclusion:Cardiac color Doppler ultrasound could better diagnose LVH complicated LHF,and also could effectively predict the cardiac function of patients with LVH and LHF.
9.Influencing factors and latent profile analysis of innovative behavior among male nurses in Anhui Province
Ying ZHANG ; Guiqi SONG ; Wenfeng LIN ; Guowen ZHANG ; Xiaohong ZHANG ; Hui DING ; Yuling XU
Chinese Journal of Practical Nursing 2025;41(29):2286-2292
Objective:To investigate the current status of innovative behavior among male nurses in the Anhui Province, conduct potential profile analysis and explore its influencing factors, providing reference for formulating intervention stratigies to enhance innovative behavior among male nurses.Methods:From January to February 2022, a stratified convenience sampling method was used to select clinical male nurses as the participants from five tertiary and first-class comprehensive hospitals in Anhui Province. A cross-sectional survey was conducted using the general demoraphic questionnaire, Nurse Innovation Behavior Scale, Authentic Leadership Scale, and Psychological Capital Questionnaire. Potential profile analysis was conducted on the innovative behavior characteristics of male nurses, and single factor analysis and Logistic regression analysis were used to test the differences in male nurses' innovative behavior characteristics.Results:Among the 220 male nurses, 107 (48.64%) were under the age of 30, accounting for the largest proportion. The innovative behavior score of participants was (38.83 ± 7.80) points, which could be divided into three categories: low-level silent type (27.3%, 60/220), medium-level conservative type (44.5%, 98/220), and high-level active type (28.2%, 62/220). Compared to the low-level silent type, male nurses with higher levels of perceived authentic leadership were more likely to belong to the medium-level conservative type ( OR = 1.055, 95% CI 1.019 - 1.093, P<0.05) and the high-level active type ( OR = 1.124, 95% CI 1.066 - 1.184, P<0.01). The higher the level of psychological capital, the greater the probability that male nurses belong to the medium-level conservative type ( OR = 1.088, 95% CI 1.050 - 1.128, P<0.01) and the high-level active type ( OR = 1.273, 95% CI 1.196 - 1.355, P<0.01). Conclusions:The innovative behavior of male nurses in Anhui Province was at a medium level and had obvious classification characteristics. Nursing managers should focus on low-level silent type and medium-level conservative type male nurses, and adopt targeted interventions and support based on different category characteristics to improve their innovation behavior capacities in clinical settings.
10.Efficacy and safety of nirsevimab for preventing respiratory syncytial virus infection in infants: a meta-analysis
Lin XU ; Min MIAO ; Yanlan ZHANG ; Rui SONG ; Caiying WANG
Adverse Drug Reactions Journal 2025;27(9):537-544
Objective:To systematically evaluate the efficacy and safety of nirsevimab in preventing respiratory syncytial virus (RSV) infection in infants.Methods:Randomized controlled trials (RCTs) of nirsevimab in the prevention of RSV infection in newborns and infants (≤ 2 years old) were collected by searching relevant databases at home and abroad (up to February 12, 2025). Subjects in the trial group received a single dose injection of nirsevimab, while those in the control group received placebo or no interventions, with an observation period of ≥150 days. The efficacy outcome indicators included the incidence of acute lower respiratory tract infections (LRTI), RSV-associated hospital visits, RSV-associated hospitalization, and severe RSV infection events. The safety outcome indicators were the occurrence of adverse events (AEs) after injection of nirsevimab. Quality of methodology was evaluated using bias risk assessment tool of Cochrane collaboration networks. Meta-analysis was performed using RevMan 5.4 software. The effect sizes were relative risk ( RR) and its 95% confidence interval ( CI). Results:A total of 4 RCTs and 11 051 subjects were entered in the analysis, including 6 032 subjects in the trial group and 5 019 in the control group. The results of meta-analysis showed that compared with the control group, the incidences of acute LRTI [4.94% (298/6 032) vs. 5.70% (286/5 019), RR=0.57, 95% CI: 0.41-0.81], RSV-associated hospital visits [1.85% (37/1 995) vs. 7.11% (71/998), RR=0.26, 95% CI: 0.18-0.38], RSV-associated hospitalization [0.31% (19/6 032) vs. 1.75% (88/5 019), RR=0.17, 95% CI: 0.07-0.43], and severe RSV infection events [0.10% (5/5 038) vs. 1.52% (69/4 523), RR=0.07, 95% CI: 0.03-0.17] in the trial group were significantly lower, and the differences were statistically significant (all P<0.001). The differences in incidences of AEs, grade ≥3 AEs, AEs of great concern, and death events in the 2 groups during the observation period were not significant (all P>0.05), and no nirsevimab-related death events occurred. Conclusion:Nirsevimab is effective in preventing RSV infection in infants and has a good safety profile.


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