1.The value of whole exome sequencing in the etiological diagnosis and treatment of urolithiasis
Yongli ZHAO ; Changbao XU ; Xiaofu WANG ; Xinyu SHI ; Changwei LIU ; Wuxue LI ; Danhua LIU ; Hongen XU
Chinese Journal of Urology 2025;46(10):739-744
Objective:To evaluate the role of whole exome sequencing(WES)in the etiological diagnosis and precision medicine management of patients with urolithiasis.Methods:We conducted a retrospective review of 21 patients with urolithiasis and pathogenic gene mutations identified by WES at The Second Affiliated Hospital of Zhengzhou University between April 2019 and March 2025. The cohort included 13 males and 8 females,with a mean age of(18.9 ± 11.1)years;18 patients were under 25 years old. Clinical presentations included nephrocalcinosis(8 patients)and urinary tract calculi(13 patients),with five patients exhibiting extra-renal manifestations such as renal tubular acidosis and hyperaldosteronism. Stone composition analysis identified calcium oxalate(16 patients),cystine(4 patients),and carbonate apatite(1 patient). Metabolic abnormalities were prevalent,including hypocitraturia(11 patients),hyperoxaluria(8 patients),and hypercalciuria(7 patients),with eight patients presenting two or more concurrent disorders. All patients underwent WES and comprehensive metabolic evaluation. Sequencing was performed on an Illumina Hiseq4000 platform,achieving a mean depth of > 100× and coverage of > 98% in target regions. Variants were classified according to the American College of Medical Genetics and Genomics(ACMG)guidelines.Results:WES identified 12 distinct genes across autosomal recessive(9 genes: AGXT, GRHPR, ATP6V1B1, SLC12A1, KCNJ1, SLC3A1, SLC7A9, SLC34A3, WFS1),autosomal dominant(2 genes: CASR, ADCY10),and X-linked recessive(1 gene: CLCN5)inheritance patterns. Genotype-phenotype correlations revealed mutations associated with primary hyperoxaluria(8 patients),hypercalciuria(7 patients),and renal malformation due to a WFS1 mutation(1 patient). A positive genetic diagnosis was achieved in 100% of patients with either urinary oxalate > 1 000 μmol/24 h or cystine stones. 8 patients received a diagnosis of hereditary stone disease at their first presentation(non-delayed group),while 13 experienced a mean diagnostic delay of(9.6 ± 3.9)years. The delayed diagnosis group had a significantly older age at initial stone onset[(10.2 ± 5.3)years vs.(6.8 ± 3.1)years, P = 0.03]and a higher incidence of impaired renal function(6 patients vs. 1 patient, P = 0.04). Analysis of diagnostic delay by gene subgroup showed delays in 2/4 patients with cystinuria[ SLC3A1/ SLC7A9;(8.2 ± 3.5)years],5/8 with primary hyperoxaluria[ AGXT/ GRHPR;(10.5 ± 4.1)years],5/7 with hypercalciuria-related genes[ CASR/ ADCY10/ SLC12A1/ KCNJ1/ SLC34A3;(9.8 ± 3.8)years],and 1/2 with other genes[ ATP6V1B1/ WFS1/ CLCN5;(7.6 ± 2.2)years]. Among 32 mutation sites detected,21 were classified as pathogenic/likely pathogenic and 11 as variants of uncertain significance. Four novel mutations were identified: ATP6V1B1(presenting with renal tubular acidosis,nephrocalcinosis,and hypocitraturia), WFS1(presenting with renal malrotation,hydronephrosis,and stones without metabolic abnormalities), SLC12A1(presenting with Bartter syndrome type 1,chronic renal insufficiency,hypercalciuria,hypocitraturia,alkalosis,and hyperaldosteronism),and SLC3A1(presenting with bilateral renal stones and cystinuria). Conclusions:WES is crucial in identifying the underlying etiology of urolithiasis and can guide targeted treatment. We recommend early WES for patients with an initial stone presentation before age 25,those with nephrocalcinosis,or those with abnormal metabolic workups to facilitate precise diagnosis and preventive care.
2.The value of whole exome sequencing in the etiological diagnosis and treatment of urolithiasis
Yongli ZHAO ; Changbao XU ; Xiaofu WANG ; Xinyu SHI ; Changwei LIU ; Wuxue LI ; Danhua LIU ; Hongen XU
Chinese Journal of Urology 2025;46(10):739-744
Objective:To evaluate the role of whole exome sequencing(WES)in the etiological diagnosis and precision medicine management of patients with urolithiasis.Methods:We conducted a retrospective review of 21 patients with urolithiasis and pathogenic gene mutations identified by WES at The Second Affiliated Hospital of Zhengzhou University between April 2019 and March 2025. The cohort included 13 males and 8 females,with a mean age of(18.9 ± 11.1)years;18 patients were under 25 years old. Clinical presentations included nephrocalcinosis(8 patients)and urinary tract calculi(13 patients),with five patients exhibiting extra-renal manifestations such as renal tubular acidosis and hyperaldosteronism. Stone composition analysis identified calcium oxalate(16 patients),cystine(4 patients),and carbonate apatite(1 patient). Metabolic abnormalities were prevalent,including hypocitraturia(11 patients),hyperoxaluria(8 patients),and hypercalciuria(7 patients),with eight patients presenting two or more concurrent disorders. All patients underwent WES and comprehensive metabolic evaluation. Sequencing was performed on an Illumina Hiseq4000 platform,achieving a mean depth of > 100× and coverage of > 98% in target regions. Variants were classified according to the American College of Medical Genetics and Genomics(ACMG)guidelines.Results:WES identified 12 distinct genes across autosomal recessive(9 genes: AGXT, GRHPR, ATP6V1B1, SLC12A1, KCNJ1, SLC3A1, SLC7A9, SLC34A3, WFS1),autosomal dominant(2 genes: CASR, ADCY10),and X-linked recessive(1 gene: CLCN5)inheritance patterns. Genotype-phenotype correlations revealed mutations associated with primary hyperoxaluria(8 patients),hypercalciuria(7 patients),and renal malformation due to a WFS1 mutation(1 patient). A positive genetic diagnosis was achieved in 100% of patients with either urinary oxalate > 1 000 μmol/24 h or cystine stones. 8 patients received a diagnosis of hereditary stone disease at their first presentation(non-delayed group),while 13 experienced a mean diagnostic delay of(9.6 ± 3.9)years. The delayed diagnosis group had a significantly older age at initial stone onset[(10.2 ± 5.3)years vs.(6.8 ± 3.1)years, P = 0.03]and a higher incidence of impaired renal function(6 patients vs. 1 patient, P = 0.04). Analysis of diagnostic delay by gene subgroup showed delays in 2/4 patients with cystinuria[ SLC3A1/ SLC7A9;(8.2 ± 3.5)years],5/8 with primary hyperoxaluria[ AGXT/ GRHPR;(10.5 ± 4.1)years],5/7 with hypercalciuria-related genes[ CASR/ ADCY10/ SLC12A1/ KCNJ1/ SLC34A3;(9.8 ± 3.8)years],and 1/2 with other genes[ ATP6V1B1/ WFS1/ CLCN5;(7.6 ± 2.2)years]. Among 32 mutation sites detected,21 were classified as pathogenic/likely pathogenic and 11 as variants of uncertain significance. Four novel mutations were identified: ATP6V1B1(presenting with renal tubular acidosis,nephrocalcinosis,and hypocitraturia), WFS1(presenting with renal malrotation,hydronephrosis,and stones without metabolic abnormalities), SLC12A1(presenting with Bartter syndrome type 1,chronic renal insufficiency,hypercalciuria,hypocitraturia,alkalosis,and hyperaldosteronism),and SLC3A1(presenting with bilateral renal stones and cystinuria). Conclusions:WES is crucial in identifying the underlying etiology of urolithiasis and can guide targeted treatment. We recommend early WES for patients with an initial stone presentation before age 25,those with nephrocalcinosis,or those with abnormal metabolic workups to facilitate precise diagnosis and preventive care.
3.A prospective cohort study on blood pressure control and risk of ischemic stroke in patients with hypertension
Changyi WANG ; Liming CAO ; Jing SHI ; Xue LI ; Fulan HU ; Jianping MA ; Bo LI ; Shan XU ; Xiaolin PENG ; Hongen CHEN ; Shuhong DAI ; Yao FANG ; Jiaxing CHEN ; Xiaofeng LIANG
Chinese Journal of Preventive Medicine 2020;54(7):737-741
Objective:To explore the association between blood pressure control and risk of ischemic stroke (IS) in patients with hypertension.Methods:A total of 5 488 patients with hypertension from 60 communities were randomly selected from 101 communities in 8 streets of Nanshan District in Shenzhen City by using two-stage sampling method. The social demographic characteristics, behavior and life style, coronary heart disease and diabetes were collected and the physical condition, blood pressure and blood biochemical indexes were measured. From April 1, 2010 to August 31, 2017 as the follow-up period, the incidence of IS was annually collected by using telephone survey. Cox proportional hazard regression model was used to analyze the relationship between blood pressure control, systolic blood pressure (SBP), diastolic blood pressure (DBP) and the risk of IS.Results:The age of all patients was (58.50±12.14) years old, including 2 712 males (49.42%) and 3 112 patients with well-controlled blood pressure (56.71%). During the follow-up period, 358 new cases of IS were confirmed, and the incidence density was 1 346.27/100 000 person-years. Cox proportional hazard regression model analysis showed after adjusting for confounding factors, unstable blood pressure control, SBP≥150 mmHg (1 mmHg=0.133 kPa; compared with SBP<120 mmHg), and DBP≥95 mmHg (compared with DBP<80 mmHg) were associated with risk of IS. The HR (95% CI) was 1.29 (1.04, 1.59), 2.00 (1.26, 3.17) and 1.52 (1.01, 2.64), respectively. Subgroup analyses showed these associations only existed in female patients with hypertension. The HR (95% CI) was 1.39 (1.05, 1.85), 2.53 (1.41, 4.56) and 1.73 (1.00, 3.36), respectively. Conclusion:Unstable blood pressure control increases the risk of IS in female patients with hypertension.
4.A prospective cohort study on blood pressure control and risk of ischemic stroke in patients with hypertension
Changyi WANG ; Liming CAO ; Jing SHI ; Xue LI ; Fulan HU ; Jianping MA ; Bo LI ; Shan XU ; Xiaolin PENG ; Hongen CHEN ; Shuhong DAI ; Yao FANG ; Jiaxing CHEN ; Xiaofeng LIANG
Chinese Journal of Preventive Medicine 2020;54(7):737-741
Objective:To explore the association between blood pressure control and risk of ischemic stroke (IS) in patients with hypertension.Methods:A total of 5 488 patients with hypertension from 60 communities were randomly selected from 101 communities in 8 streets of Nanshan District in Shenzhen City by using two-stage sampling method. The social demographic characteristics, behavior and life style, coronary heart disease and diabetes were collected and the physical condition, blood pressure and blood biochemical indexes were measured. From April 1, 2010 to August 31, 2017 as the follow-up period, the incidence of IS was annually collected by using telephone survey. Cox proportional hazard regression model was used to analyze the relationship between blood pressure control, systolic blood pressure (SBP), diastolic blood pressure (DBP) and the risk of IS.Results:The age of all patients was (58.50±12.14) years old, including 2 712 males (49.42%) and 3 112 patients with well-controlled blood pressure (56.71%). During the follow-up period, 358 new cases of IS were confirmed, and the incidence density was 1 346.27/100 000 person-years. Cox proportional hazard regression model analysis showed after adjusting for confounding factors, unstable blood pressure control, SBP≥150 mmHg (1 mmHg=0.133 kPa; compared with SBP<120 mmHg), and DBP≥95 mmHg (compared with DBP<80 mmHg) were associated with risk of IS. The HR (95% CI) was 1.29 (1.04, 1.59), 2.00 (1.26, 3.17) and 1.52 (1.01, 2.64), respectively. Subgroup analyses showed these associations only existed in female patients with hypertension. The HR (95% CI) was 1.39 (1.05, 1.85), 2.53 (1.41, 4.56) and 1.73 (1.00, 3.36), respectively. Conclusion:Unstable blood pressure control increases the risk of IS in female patients with hypertension.
5.Construction and management practice of morphologic experimental center in medical university
Yi ZHOU ; Xinying HE ; Runqi ZHANG ; Shanwei WANG ; Gengli WU ; Hongen SHI ; Gaoyu BAI ; Yang LEI ; Jinghui ZHANG
Chinese Journal of Medical Education Research 2017;16(7):684-687
Based on the construction and management practice of the morphologic experimental center in Xi'an Medical University, the achievements in laboratory daily operation and institutional man-agement were summarized in the area of lab rules and regulations, instrument and equipment, experiment teaching, lab environment and safety, lab staff administration and so on. The management work has been refined using the practice model of resource sharing, system administration, individual responsibility, and unified staff supervision. The lab rules and responsibilities were also effectively implemented on specific person. Taking the opportunity in teaching evaluation at the experimental center, the lab connotation con-struction was further strengthened. The evaluation system was thoroughly examined in order to look for gaps and promote the lab construction. Further work could be carried out on the laboratory software and hard-ware, such as instrument and equipment update, experimental teaching system reformation in morphology, promotion on multidisciplinary integration and unified management of lab staff.

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