1.Development of A Prognostic Prediction Model for Primary Membranous Nephropathy in the Elderly Based on Machine Learning
Yuzhu XU ; Shuqin LIU ; Dingding WANG ; Wei CHEN ; Xin WANG
Medical Journal of Peking Union Medical College Hospital 2026;17(2):370-381
Elderly patients with primary membranous nephropathy (PMN) exhibit significant prognostic heterogeneity and poor tolerance to immunotherapy. However, there is a lack of early prognostic prediction tools specifically for this population. This study aimed to develop a prognostic prediction model applicable to elderly PMN patients. This study retrospectively included elderly patients with PMN confirmed by renal biopsy. The primary endpoint was a adverse composite outcome including end-stage renal disease (ESRD), a ≥50% decline in estimated glomerular filtration rate (eGFR), or all-cause death. Patients were randomly divided into a training cohort and a validation cohort at a ratio of 7∶3. Key prognostic features were identified using least absolute shrinkage and selection operator (LASSO) regression combined with random survival forest, and a predictive model was constructed based on penalized Cox regression. Model performance was evaluated using the concordance index (C-index), time-dependent area under the receiver operating characteristic curve (AUROC), calibration curves, and decision curve analysis. The SurvSHAP (t) method was employed for interpretability analysis of the model. A total of 309 elderly patients with PMN were included in this study, with a median age of 65.00 years (IQR, 62.00-68.00) and a male predominance 61.2%(189/309).During a median follow-up of 47.00 months (IQR, 25.00-89.00), 38.2%(118/309) reached the endpoint event. The final model included nine key features, including eGFR, total protein (TP), glomerular capsular adhesion, urine glucose, segmental glomerulosclerosis proportion, fibrinogen, urea, age, and activated partial thromboplastin time (APTT). In the validation cohort, the model demonstrated good discrimination, with a C-index of 0.731(95% CI: 0.652-0.797). The time-dependent AUROCs for predicting adverse outcomes at 3, 5, and 10 years were 0.758(95% CI: 0.614-0.901), 0.781(95% CI: 0.646-0.916), and 0.866(95% CI: 0.740-0.993), respectively. Calibration curves demonstrated a high degree of concordance between predicted probabilities and actual event rates. Decision curve analysis confirmed the net clinical benefit of the model.SurvSHAP (t) analysis showed that eGFR, TP, glomerular capsular adhesion, urine glucose, and the proportion of segmental glomerular sclerosis were the top five variables contributing to the model. This prognostic model effectively predicts the risk of adverse outcomes in elderly patients with PMN in the internal validation cohort, offering a potential scientific basis for individualized risk stratification and treatment decision-making in this population.
2.Retrospective epidemiological analysis of fungal infection of a hospital from 2018 to 2024
Zhihao LIU ; Yali LIU ; Lina GUO ; Yao WANG ; Ying ZHAO ; Xiuli XIE ; Wenjing LIU ; Renyuan ZHU ; Hongli SUN ; Hongtao DOU ; Dingding LI ; Lingli LIU ; Shuying YU ; Menglan ZHOU ; Qiwen YANG ; Yingchun XU ; Li ZHANG
International Journal of Laboratory Medicine 2025;46(21):2588-2594
Objective To analyze the main epidemiological characteristics of fungal infection in this hospital in the past 7 years,and to provide reference for clinical treatment and prevention and control strategies of fun-gal infection.Methods The fungal data and clinical data of related patients isolated from clinical samples in Peking Union Medical College Hospital from early January 2018 to the end of May 2024 were selected,and the main epidemiological characteristics of fungal infection in this hospital were identified and described through multi-angle statistical analysis.Results A total of 4 479 patients with filamentous fungal infection were en-rolled.The proportion of male patients[57.5%(2 576/4 479)]was higher than that of female patients[42.5%(1 903/4 143)],mainly distributed in internal medicine,Intensive Care Unit(ICU)and emergency de-partment,among which internal medicine accounted for the highest proportion[50.0%(2 241/4 479)].About 90.0%of the specimens were from the lower respiratory tract,in addition to specimens from skin and soft tis-sue,tissue,ear and blood culture.In terms of seasonal distribution,there are more patients in winter.The fun-gi were mainly composed of Aspergillus,Mucor,Cerdosporium,Fusarium and Penicillium,among which As-pergillus was the most abundant,accounting for 74.6%of the total.Aspergillus fumigatus was the most a-bundant Aspergillus,accounting for 42.5%of the total Aspergillus(1 418/3 340).Among the related infec-tions caused by mold,Aspergillus was the most common in the lower respiratory tract,accounting for 76.8%.Among them,Aspergillus fumigatus accounted for the highest proportion(33.6%).98.6%of the molds infected the ear were Aspergillus,of which Aspergillus niger and Aspergillus terreus were the most common.Skin infections are mainly caused by Sporothrix schenckii,Trichophyton rubrum,Microsporum ca-nis.The results of in vitro drug sensitivity test showed that the four common Aspergillus isolated in this hos-pital were sensitive to voriconazole,and amphotericin B had better antifungal activity against Mucorales in vitro.Conclusion Based on the main epidemiological characteristics of fungal infections in this hospital,it is recommended that special attention be paid to the admission of patients in the respiratory department during the peak infection period in autumn and winter.In the treatment of fungal infections in different regions and on different body parts,attention should be paid to the differences in the distribution of bacterial species.
3.Ancient data mining on drug characteristics of knee osteoarthritis
Zihan MENG ; Yueyue YU ; Xiaoyi SHI ; Xinyu MA ; Dingding WU ; Xu ZHANG ; Heyi LI ; Jingya WANG ; Liyuan ZHANG ; Heli ZHAO
China Modern Doctor 2025;63(12):1-4,48
Objective To analyze ancient prescriptions for knee osteoarthritis(KOA),and explore their application patterns,for providing clinical reference value.Methods Prescriptions were collected from ancient documents,and a database was created by using Excel 2016 for frequency analysis.Association rules and hidden structures were analyzed by using SPSS Modeler 18.0 and Lantern 5.0.Results A total of 373 prescriptions and 421 herbs were collected,with 3894 times of frequency of medication.Danggui was the most frequently used herb.Herbs primarily tonified deficiencies,relieved exterior symptoms,and expelled wind-dampness,with warm properties and pungent,sweet,or bitter tastes,mainly targeting the spleen and kidney meridians.Thirteen strong association rules were identified,including Chuanxiong+Niuxi-Danggui,and Bixie-Niuxi.Hidden structure analysis revealed 10 variables,leading to 4 clusters and 4 core prescriptions.Common syndromes included wind-damp,wind-cold-damp,wind-damp-heat,and qi-blood deficiency.Conclusion The treatment of KOA in ancient literature focuses on dispelling wind and removing dampness,taking into account both positive deficiency and evil excess,flexible use of tonifying spleen and kidney,clearing dampness-heat,tonifying Qi and blood and other drugs.
4.Ancient data mining on drug characteristics of knee osteoarthritis
Zihan MENG ; Yueyue YU ; Xiaoyi SHI ; Xinyu MA ; Dingding WU ; Xu ZHANG ; Heyi LI ; Jingya WANG ; Liyuan ZHANG ; Heli ZHAO
China Modern Doctor 2025;63(12):1-4,48
Objective To analyze ancient prescriptions for knee osteoarthritis(KOA),and explore their application patterns,for providing clinical reference value.Methods Prescriptions were collected from ancient documents,and a database was created by using Excel 2016 for frequency analysis.Association rules and hidden structures were analyzed by using SPSS Modeler 18.0 and Lantern 5.0.Results A total of 373 prescriptions and 421 herbs were collected,with 3894 times of frequency of medication.Danggui was the most frequently used herb.Herbs primarily tonified deficiencies,relieved exterior symptoms,and expelled wind-dampness,with warm properties and pungent,sweet,or bitter tastes,mainly targeting the spleen and kidney meridians.Thirteen strong association rules were identified,including Chuanxiong+Niuxi-Danggui,and Bixie-Niuxi.Hidden structure analysis revealed 10 variables,leading to 4 clusters and 4 core prescriptions.Common syndromes included wind-damp,wind-cold-damp,wind-damp-heat,and qi-blood deficiency.Conclusion The treatment of KOA in ancient literature focuses on dispelling wind and removing dampness,taking into account both positive deficiency and evil excess,flexible use of tonifying spleen and kidney,clearing dampness-heat,tonifying Qi and blood and other drugs.
5.Practical teaching of obstetric humanistic medicine based on narrative medicine:taking the"birth"theme practice of the"Warm Medicine"course as an example
Dingding XU ; Yuan FENG ; Lihong TIAN ; Yangyang YU
Chinese Medical Ethics 2024;37(11):1302-1307
Narrative medicine emphasizes the cultivation of narrative ability,providing an important pathway to promote clinical discipline teaching and guide the transformation of medical students into the role of doctors.Based on the theory of narrative medicine,the Warm Medicine course is designed with a two-layer advanced practical teaching system covering the entire life cycle of"birth,aging,illness,and death".It can train the ability of medical students to absorb,interpret,and respond to patients'stories and difficulties in actual medical scenarios.Taking the"birth"theme practice as an example,the paper presentes the specific implementation and development of the course.The practical teaching of the"birth"theme enhanced students'understanding of medical themes and their perception of the essence of life,as well as promoting the establishment of the subjectivity of doctor-patient relationships and the formation of medical students'holistic medical diagnosis and treatment thinking.
6.HBV infection among blood donors from 18 domestic blood stations of prefecture-level cities
Dingding WANG ; Youhua SHEN ; Jianling ZHONG ; Hui ZHANG ; Zhibin TIAN ; Lin BAO ; Huixia ZHAO ; Jian ZHANG ; Peng WANG ; Yanqin HE ; Wei ZHANG ; Li LI ; Hao LI ; Dexu CHU ; Ying WANG ; Xin ZHANG ; Shouguang XU ; Min HUANG ; Yan QIU
Chinese Journal of Blood Transfusion 2023;36(2):172-176
【Objective】 To analyze the hepatitis B virus (HBV) infection data of blood donors from 18 domestic blood stations, so as to investigate the HBV infection situation of blood donors. 【Methods】 The positive rate of HBV and its distribution characteristics of regions, the percentage of HBsAg+ ELISA in first-time vs repeated blood donors, and the percentage of HBsAg-/HBV DNA+ blood donors of 18 domestic blood stations during 2017 to 2020 were collected from the Working Platform for Practice Comparison of Blood Centers, and the HBV infection among blood donors were statistically analyzed. 【Results】 From 2017 to 2020, the positive rate of HBV in blood donors among 18 domestic blood stations was 13.48/10 000-144.02/10 000, with the average HBV positive rate in eastern, central and western region at 26.14/10 000, 51.98/10 000 and 41.00/10 000, respectively. The HBsAg+ rate by ELISA among first-time and repeated blood donors was 14.55/10 000-305.39/10 000 vs 1.04/10 000-87.43/10 000 The HBsAg-/HBV DNA+ yield was 1.80/10 000-35.31/10 000. 【Conclusion】 The distribution of HBV infection in blood donors has regional characteristics, and HBV prevalence was low in repeated blood donors. HBsAg ELISA combined with HBV DNA detection can better ensure blood safety.
7. Clinical significance of serum squamous cell carcinoma antigen in patients with early cervical squamous cell carcinoma
Dan LI ; Xiaoxian XU ; Dingding YAN ; Shuhui YUAN ; Hanmei LOU
Chinese Journal of Oncology 2019;41(5):357-362
Objective:
To explore the clinical significance of serum squamous cell carcinoma antigen (SCC-Ag) in early cervical squamous cell carcinoma.
Methods:
The clinicopathological data and follow-up information of 1435 patients with stage ⅠA2-ⅡA cervical squamous cell carcinoma were collected. The correlation between serum SCC-Ag level and clinicopathological feature and prognosis were analyzed. The best cut-off of serum SCC-Ag for predicting pelvic lymph node metastasis and survival of cervical squamous cell carcinoma patients were also identified.
Results:
The result of univariate analysis showed that The International Federation of Gynecology and Obstetrics (FIGO) staging, tumor size, depth of cervical stromal invasion, lymphovascular space involvement, pelvic lymph node metastasis, common iliac lymph node metastasis and para-aortic lymph node metastasis were significantly related with serum SCC-Ag level (all
8.Clinical significance of serum squamous cell carcinoma antigen in patients with early cervical squamous cell carcinoma
Dan LI ; Xiaoxian XU ; Dingding YAN ; Shuhui YUAN ; Hanmei LOU
Chinese Journal of Oncology 2019;41(5):357-362
Objective To explore the clinical significance of serum squamous cell carcinoma antigen (SCC?Ag) in early cervical squamous cell carcinoma. Methods The clinicopathological data and follow?up information of 1435 patients with stageⅠA2?ⅡA cervical squamous cell carcinoma were collected. The correlation between serum SCC?Ag level and clinicopathological feature and prognosis were analyzed.The best cut?off of serum SCC?Ag for predicting pelvic lymph node metastasis and survival of cervical squamous cell carcinoma patients were also identified. Results The result of univariate analysis showed that The International Federation of Gynecology and Obstetrics (FIGO) staging, tumor size, depth of cervical stromal invasion, lymphovascular space involvement, pelvic lymph node metastasis, common iliac lymph node metastasis and para?aortic lymph node metastasis were significantly related with serum SCC?Ag level (all P<0.05). The result of multivariate logistic regression analysis showed that tumor size, depth of cervical stromal invasion, pelvic lymph node metastasis and common iliac lymph node metastasis were the independent risk factors of preoperative serum SCC?Ag>2.65 ng/ml ( all P<0.001). Multivariate Cox regression analysis showed that lymphovascular space involvement, SCC?Ag>3.15 ng/ml, common iliac lymph node metastasis and tumor size >4 cm were the independent prognostic risk factors ( all P<0.05). The univariate analysis showed that, the tumor size, FIGO stage, depth of cervical stromal invasion and SCC?Ag level were significantly related with the recurrence of 1 096 patients without postoperative high risk factors ( all P<0.05). Multivariate logistic regression analysis showed that FIGO stage (OR=1.671) and SCC?Ag>2.65 ng/ml (OR=4.490) were the independent risk factors for recurrence (both P<0.05). The best cut off of SCC?Ag for predicting early postoperative cervical lymph node metastasis of cervical squamous cell carcinoma was 2.65 ng/ml, the sensitivity was 60.8%,the specificity was 71.8%. The best cut off of SCC?Ag for predicting prognosis of cervical squamous cell carcinoma was 3.15 ng/ml, the sensitivity was 53.5%, the specificity was 71.1%.Conclusions Preoperative serum squamous cell carcinoma antigen is an independent prognostic risk factor of survival of patients with early cervical squamous cell carcinoma, and is significantly related with recurrence of patients without postoperative high?risk factors. It can be used as a reference factor for postoperative adjuvant radiotherapy.
9.Clinical significance of serum squamous cell carcinoma antigen in patients with early cervical squamous cell carcinoma
Dan LI ; Xiaoxian XU ; Dingding YAN ; Shuhui YUAN ; Hanmei LOU
Chinese Journal of Oncology 2019;41(5):357-362
Objective To explore the clinical significance of serum squamous cell carcinoma antigen (SCC?Ag) in early cervical squamous cell carcinoma. Methods The clinicopathological data and follow?up information of 1435 patients with stageⅠA2?ⅡA cervical squamous cell carcinoma were collected. The correlation between serum SCC?Ag level and clinicopathological feature and prognosis were analyzed.The best cut?off of serum SCC?Ag for predicting pelvic lymph node metastasis and survival of cervical squamous cell carcinoma patients were also identified. Results The result of univariate analysis showed that The International Federation of Gynecology and Obstetrics (FIGO) staging, tumor size, depth of cervical stromal invasion, lymphovascular space involvement, pelvic lymph node metastasis, common iliac lymph node metastasis and para?aortic lymph node metastasis were significantly related with serum SCC?Ag level (all P<0.05). The result of multivariate logistic regression analysis showed that tumor size, depth of cervical stromal invasion, pelvic lymph node metastasis and common iliac lymph node metastasis were the independent risk factors of preoperative serum SCC?Ag>2.65 ng/ml ( all P<0.001). Multivariate Cox regression analysis showed that lymphovascular space involvement, SCC?Ag>3.15 ng/ml, common iliac lymph node metastasis and tumor size >4 cm were the independent prognostic risk factors ( all P<0.05). The univariate analysis showed that, the tumor size, FIGO stage, depth of cervical stromal invasion and SCC?Ag level were significantly related with the recurrence of 1 096 patients without postoperative high risk factors ( all P<0.05). Multivariate logistic regression analysis showed that FIGO stage (OR=1.671) and SCC?Ag>2.65 ng/ml (OR=4.490) were the independent risk factors for recurrence (both P<0.05). The best cut off of SCC?Ag for predicting early postoperative cervical lymph node metastasis of cervical squamous cell carcinoma was 2.65 ng/ml, the sensitivity was 60.8%,the specificity was 71.8%. The best cut off of SCC?Ag for predicting prognosis of cervical squamous cell carcinoma was 3.15 ng/ml, the sensitivity was 53.5%, the specificity was 71.1%.Conclusions Preoperative serum squamous cell carcinoma antigen is an independent prognostic risk factor of survival of patients with early cervical squamous cell carcinoma, and is significantly related with recurrence of patients without postoperative high?risk factors. It can be used as a reference factor for postoperative adjuvant radiotherapy.
10.Clinical and prognostic analysis of elderly patients with cervical cancer
Dan LI ; Xiaoxian XU ; Dingding YAN ; Hanmei LOU
Chinese Journal of Geriatrics 2018;37(12):1390-1394
Objective To explore the prognosis and risk factors for cervical cancer in elderly patients. Methods Clinical data of 337 elderly patients (≥ 65 years old )admitted into Zhejiang Cancer Hospital from June 2008 to June 2013 were retrospectively analyzed.Clinical data and the follow-up information were collected. The correlation of prognosis with age ,performance status score , International Federation of Gynecology and Obstetrics (FIGO )staging ,tumor size ,pathological type , treatment and comorbidities were analyzed. Results Among 337 elderly patients ,the 5-year overall survival(OS )rates for patients with stage Ⅰ,Ⅱ,Ⅲ,Ⅳ were 81.8% ,62.3% ,53.5% and 0.0% , respectively (χ2=63.414 ,P=0.000) ;local recurrence rate was 33.5% ;the 5-year OS rate of patients with and without comorbidities were 54.0% and 70.0% ,respectively(χ2=8.907 ,P=0.003).Among 119 cervical cancer patients with stage ⅠA-ⅡA ,5-year OS for surgery group and radiotherapy group were 83.5% and 55.0% ,respectively(χ2=13.161 ,P=0.000).Among 218 advanced cervical cancer patients ,the 5 year OS for chemoradiotherapy and radiotherapy groups were 69.7% and 51.9% , respectively(χ2=4.030 ,P=0.045). The acute toxicity reactions of radiotherapy and chemoradiotherapy groups were as follows. The incidences of acute grades 3-4 hematological toxicity were 9.7% and 42.4% in radiotherapy group and chemoradiotherapy groups respectively (χ2=21.362 ,P=0.000) ,and the incidences of acute grade 3 gastrointestinal toxicity were 5.9% and 9.1% (χ2=0.086 ,P=0.769)in radiotherapy group and chemoradiotherapy group ,respectively.No grade 4 gastrointestinal toxicity was found.Multivariate Cox regression analysis showed that age ,PS score , FIGO staging ,pathological type ,treatment and comorbidities were influencing factors for prognosis in elderly patients with cervical cancer (P<0.05). Conclusions Elderly cervical cancer patients have a good tolerance to treatment. The comorbidity is one of negatively influencing factors for prognosis. The efficacy of definitive radiotherapy is inferior to surgery in elderly patients with early stage cervical cancer due to the high proportion of comorbidities.Concurrent chemoradiotherapy can improve the prognosis of middle and advanced cervical cancer in elderly patients.

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