1.Material Basis of Anti-Inflammatory Efficacy and Mechanism of Action of Bushen Tongdu Prescription Based on UPLC-LTQ-Orbitrap-MS and Network Pharmacology
Yan RONG ; Lulu JING ; Hongping HOU ; Huijun WANG ; Lihua CHEN ; Yunxin CHEN ; Liang LI ; Li LIN ; Xiaoqin LUO ; Haiyu ZHAO ; Xiaolu WEI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):152-161
ObjectiveThis paper aims to investigate the material basis of the anti-inflammatory efficacy and mechanism of action of Bushen Tongdu prescription (BSTDP). MethodsThe chemical components of BSTDP and its blood-absorbed components in vivo were systematically identified by using ultra-performance liquid chromatography-linear ion trap-electrostatic field orbitrap high-resolution mass spectrometry (UPLC-LIT-Orbitrap-MS). Network pharmacology was employed to screen blood-absorbed bioactive components and potential targets of this formula. A protein-protein interaction (PPI) network of core targets was constructed to conduct enrichment analysis. Molecular docking was further utilized to verify the binding affinity between key components and targets. The inflammatory model was established and verified in vivo by using a transgenic zebrafish Tg (mpx: GFP). At three days post-fertilization (3 dpf), larvae of zebrafish were randomly assigned to blank group, model group, positive drug dexamethasone acetate group (75 μmol·L-1), and BSTDP groups with low, medium, and high doses (500, 1 000, and 2 000 mg·L-1). The distribution and quantity of neutrophils in the yolk sac region were observed under a fluorescence microscope. The mRNA expression levels of key genes in the toll-like receptor 4 (TLR4)/myeloid differentiation factor 88 (MyD88)/nuclear factor kappa-B (NF-κB) signaling pathway and inflammatory factors including interleukin (IL)-1β, IL-6, and tumor necrosis factor-α (TNF-α) were detected by Real-time quantitative polymerase chain reaction (Real-time PCR). ResultsA total of 120 chemical components were identified in BSTDP, among which 26 original components were confirmed by using serum pharmacochemical methods. A total of 227 common targets linking rheumatoid arthritis (RA) and the blood-absorbed components were screened by network pharmacology. It is suggested that pseudobrucine, vomicine, sinapine, rehmannioside, cinnamyl alcohol glycoside, and methylephedrine exert anti-inflammatory effects by acting on core targets including protein kinase B1 (Akt1), signal transducer and activator of transcription 3 (STAT3), tumor necrosis factor (TNF), TLR4, mitogen-activated protein kinase 14 (MAPK14), and phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit α (PIK3CA), thereby modulating multiple signaling pathways such as TLR4 and NF-κB. In vivo verification in zebrafish demonstrates that the maximum tolerable concentration of Bushen Tongdu Formula is 2 000 mg·L-1. Compared to those in the blank group, zebrafish in the model group showed a significantly higher number of neutrophils in the yolk sac region (P<0.01) and rising mRNA levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β (P<0.01). Compared to that in the model group, the number of neutrophils was significantly reduced in BSTDP groups with medium and high doses, as well as the dexamethasone acetate group (P<0.05, P<0.01). There was no statistically significant difference in the low dose group. The mRNA expression levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β were significantly down-regulated (P<0.05, P<0.01). ConclusionThis paper identifies the material basis of the efficacy of BSTDP, demonstrating that the formula can exert an anti-inflammatory effect through the TLR4/MyD88/NF-κB signaling pathway. The results provide scientific experimental evidence for its further clinical application.
2.Material Basis of Anti-Inflammatory Efficacy and Mechanism of Action of Bushen Tongdu Prescription Based on UPLC-LTQ-Orbitrap-MS and Network Pharmacology
Yan RONG ; Lulu JING ; Hongping HOU ; Huijun WANG ; Lihua CHEN ; Yunxin CHEN ; Liang LI ; Li LIN ; Xiaoqin LUO ; Haiyu ZHAO ; Xiaolu WEI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):152-161
ObjectiveThis paper aims to investigate the material basis of the anti-inflammatory efficacy and mechanism of action of Bushen Tongdu prescription (BSTDP). MethodsThe chemical components of BSTDP and its blood-absorbed components in vivo were systematically identified by using ultra-performance liquid chromatography-linear ion trap-electrostatic field orbitrap high-resolution mass spectrometry (UPLC-LIT-Orbitrap-MS). Network pharmacology was employed to screen blood-absorbed bioactive components and potential targets of this formula. A protein-protein interaction (PPI) network of core targets was constructed to conduct enrichment analysis. Molecular docking was further utilized to verify the binding affinity between key components and targets. The inflammatory model was established and verified in vivo by using a transgenic zebrafish Tg (mpx: GFP). At three days post-fertilization (3 dpf), larvae of zebrafish were randomly assigned to blank group, model group, positive drug dexamethasone acetate group (75 μmol·L-1), and BSTDP groups with low, medium, and high doses (500, 1 000, and 2 000 mg·L-1). The distribution and quantity of neutrophils in the yolk sac region were observed under a fluorescence microscope. The mRNA expression levels of key genes in the toll-like receptor 4 (TLR4)/myeloid differentiation factor 88 (MyD88)/nuclear factor kappa-B (NF-κB) signaling pathway and inflammatory factors including interleukin (IL)-1β, IL-6, and tumor necrosis factor-α (TNF-α) were detected by Real-time quantitative polymerase chain reaction (Real-time PCR). ResultsA total of 120 chemical components were identified in BSTDP, among which 26 original components were confirmed by using serum pharmacochemical methods. A total of 227 common targets linking rheumatoid arthritis (RA) and the blood-absorbed components were screened by network pharmacology. It is suggested that pseudobrucine, vomicine, sinapine, rehmannioside, cinnamyl alcohol glycoside, and methylephedrine exert anti-inflammatory effects by acting on core targets including protein kinase B1 (Akt1), signal transducer and activator of transcription 3 (STAT3), tumor necrosis factor (TNF), TLR4, mitogen-activated protein kinase 14 (MAPK14), and phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit α (PIK3CA), thereby modulating multiple signaling pathways such as TLR4 and NF-κB. In vivo verification in zebrafish demonstrates that the maximum tolerable concentration of Bushen Tongdu Formula is 2 000 mg·L-1. Compared to those in the blank group, zebrafish in the model group showed a significantly higher number of neutrophils in the yolk sac region (P<0.01) and rising mRNA levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β (P<0.01). Compared to that in the model group, the number of neutrophils was significantly reduced in BSTDP groups with medium and high doses, as well as the dexamethasone acetate group (P<0.05, P<0.01). There was no statistically significant difference in the low dose group. The mRNA expression levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β were significantly down-regulated (P<0.05, P<0.01). ConclusionThis paper identifies the material basis of the efficacy of BSTDP, demonstrating that the formula can exert an anti-inflammatory effect through the TLR4/MyD88/NF-κB signaling pathway. The results provide scientific experimental evidence for its further clinical application.
3.A fetus with Neurodevelopmental disorders with deformed facial features and distal skeletal abnormalities due to a rare variant of ZMIZ1 gene and literature review.
Jinghui ZOU ; Haibo LI ; Lulu YAN
Chinese Journal of Medical Genetics 2026;43(4):295-300
OBJECTIVE:
To investigate the clinical manifestations and genetic etiology of a fetus with Neurodevelopmental disorders with deformed facial features and distal skeletal abnormalities (NEDDFSA).
METHODS:
Clinical data of a NEDDFSA fetus diagnosed at the Affiliated Women and Children's Hospital Affiliated to Ningbo University in March 2025 was selected as the study subject. Whole-exome sequencing (WES) was carried out on the amniotic fluid and parental peripheral blood samples, and candidate variants was verified by Sanger sequencing. The pathogenicity of candidate variant was rated based on guidelines from the American College of Medical Genetics and Genomics (ACMG). This study was approved by the Medical Ethics Committee of the hospital (Ethics No.: EC2023-094).
RESULTS:
At 30 weeks of gestation, the fetus was found to have microcephaly, short femur and intrauterine growth restriction. WES revealed that the fetus harbored a de novo heterozygous frameshift variant c.2633dup (p.Gly879ArgfsTer22) of the ZMIZ1 gene, which was rated as pathogenic (PM2_Supporting+PS2_Supporting+PVS1). Combined with 25 cases from the literature, the main manifestations of patients have included intellectual disability, growth retardation and cranio-limb skeletal dysplasia, albeit without clear genotype-phenotype correlation.
CONCLUSION
The de novo variant c.2633dup (p.Gly879ArgfsTer22) of the ZMIZ1 gene probably underlay the NEDDFSA in this fetus. Genetic testing has enabled accurate prenatal diagnosis and provided evidence for genetic counseling and reproductive guidance of this family.
Humans
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Female
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Pregnancy
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Neurodevelopmental Disorders/genetics*
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Transcription Factors/genetics*
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Fetus/abnormalities*
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Exome Sequencing
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Prenatal Diagnosis
4.Dosimetric and execution efficiency comparison of flattening filter-free VMAT plans for post-mastectomy radiotherapy in breast cancer based on halcyon and VitalBeam
Lulu LI ; Chengjun SHAO ; Zhongkai JIANG ; Daohong WANG ; Juan YAN ; Rui XU
Chinese Journal of Radiological Health 2026;35(3):362-369
Objective To compare the dosimetric differences, plan complexity, verification pass rate, and execution efficiency of volumetric modulated arc therapy (VMAT) plans designed for post-mastectomy radiotherapy of breast cancer using Halcyon 2.0 and VitalBeam accelerators in flattening filter-free mode. Methods A retrospective analysis was conducted on imaging data from 87 female breast cancer patients aged 29 to 75 (49.9 ± 9.9) years who underwent modified radical mastectomy followed by radiotherapy. VMAT plans were designed using both VitalBeam and Halcyon accelerators in flattening filter-free mode. The dosimetric parameters, plan complexity, verification pass rate, and execution efficiency were compared between the plans designed for both accelerators, with a significance level of P<0.05. Results In terms of target volume parameters, Halcyon 2.0 plans demonstrated superior homogeneity index and conformity index. For organs at risk, the Halcyon 2.0 plans showed lower doses for the lungs (D20% and Dmean) and heart (Dmean) compared to the VitalBeam plans (all P<0.05). Regarding plan complexity, Halcyon 2.0 plans exhibited better median average aperture area variation (0.35 ± 0.02), smaller aperture score, and larger median plan aperture area than VitalBeam plans (all P<0.05). However, VitalBeam plans had a superior median modulation complexity score (0.28 ± 0.01) compared to Halcyon 2.0 plans (P<0.05). Patient plans were assessed using the ArcCHECK phantom, revealing higher pass rates and significantly shorter execution time for Halcyon plans compared to VitalBeam plans (P<0.05). Conclusion Both Halcyon 2.0 and VitalBeam accelerators can provide high-quality VMAT plans for postoperative radiotherapy of breast cancer, with excellent verification pass rates ensuring treatment accuracy and efficacy. However, Halcyon 2.0 offers lower plan complexity, simplifies the treatment planning process, and reduces execution time, thereby achieving higher treatment efficiency and demonstrating greater advantages in clinical applications.
5.Mechanism of Mingshi Prescription in Regulating Opn4-dopamine Axis to Inhibit Endoplasmic Reticulum Stress and Delay Myopia Progression
Baohua LI ; Zefeng KANG ; Lulu WANG ; Xin YAN ; Jianquan WANG ; Xinyue HOU ; Bobiao NING ; Shanshan YE ; Mengyu LIU ; Yipeng SHI ; Danyu LI
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(18):58-67
ObjectiveTo investigate the mechanism by which Mingshi prescription regulates the retinal melanopsin-dopamine (Opn4-DA) axis in myopic mice to inhibit endoplasmic reticulum (ER) stress in the retina and sclera, thereby delaying axial elongation associated with myopia. MethodsSixty 4-week-old male SPF-grade C57BL/6J mice were randomly divided into a normal group, a form-deprived myopia group (FDM group), an intrinsically photosensitive retinal ganglion cells ablation group (ipRGCs group), a Mingshi Prescription group (MSF group, 5.2 g·kg-1), and an ipRGCs + MSF group (5.2 g·kg-1). Except for the normal group, all other groups underwent FDM modeling. Additionally, the ipRGCs and ipRGCs + MSF groups received retinal ipRGC ablation. Three weeks after modeling, the MSF and ipRGCs + MSF groups were administered Mingshi prescription via continuous gavage for six weeks. After refraction and axial length were measured in all mice, eyeballs were collected along with retinal and scleral tissues. Pathological and morphological changes in the retina, choroid, and sclera were observed using periodic acid-Schiff (PAS) staining. Western blot was employed to detect the relative protein expression levels of dopamine D1 receptor (DRD1), C/EBP homologous protein (CHOP), and glucose-regulated protein 78 (GRP78) in the retina, and CHOP and GRP78 in the sclera. Real-time PCR was used to detect the relative mRNA expression of Opn4, CHOP, and GRP78 in the retina, and CHOP and GRP78 in the sclera. Immunofluorescence staining (IF) was performed to detect the expression of Opn4 and DRD1 in retinal tissues. ResultsCompared with the normal group, the FDM group showed a significant myopic shift in refraction (P<0.05) and a significant increase in axial length (P<0.05). The retinal layers were thinner, the number of ganglion cells was reduced, and collagen fibers in the sclera were loosely arranged with evident gaps. Opn4 and DRD1 protein and mRNA expression in the retina were significantly decreased (P<0.05), while CHOP and GRP78 protein and mRNA expression in both retinal and scleral tissues were significantly increased (P<0.05). Compared with the FDM group, the ipRGCs group exhibited further increases in myopic refraction and axial length (P<0.05), more pronounced thinning and looseness in the retinal, choroidal, and scleral layers, lower expression of Opn4 and DRD1 protein and mRNA in the retina (P<0.05), and higher expression of CHOP and GRP78 protein and mRNA in the retina and sclera (P<0.05). Compared with the FDM group, the MSF group showed significantly reduced refractive error and axial length (P<0.05), with improved cellular number, arrangement, and thickness in ocular tissues, increased Opn4 and DRD1 protein and mRNA expression in the retina (P<0.05), and reduced CHOP and GRP78 protein and mRNA expression in both retina and sclera (P<0.05). Similarly, the ipRGCs + MSF group showed significant improvements in terms of the above items compared with the ipRGCs group (P<0.05). ConclusionMingshi Prescription delays myopic axial elongation and refractive progression by regulating the Opn4-DA axis in the retina of myopic mice, thereby inhibiting ER stress in the retina and sclera. This intervention promotes Qi and blood nourishment of the eyes, softens the fascia, and restores ocular rhythm.
6.Effect of growth parameters and analysis of glucose and lipid metabolism in children with GHD treated with rhGH for 2 years
Lulu XIA ; Jie YAN ; Wenli YANG ; Wenli ZHAO
Clinical Medicine of China 2025;41(1):50-59
Objective:To observe the changes of growth parameters and glucose and lipid metabolism indexes in GHD children treated with rhGH for 2 years, and analyze the influence of sex and age on these indexes.Methods:Clinical data of children with 80 cases GHD admitted to the Endocrine and Nutrition Clinic of the Beijing Children's Hospital affiliated to the Capital Medical University from July 2016 to December 2022 were analyzed retrospectively. All patients were treated with rhGH. The growth parameters, growth factors, glucose metabolism and lipid metabolism indexes were collected and calculated before treatment and at 3, 6, 12, 18 and 24 months after treatment, the influence of sex and age on these indexes and the correlations between these indicators and height growth rate were analyzed. Independent-sample t-test was used to compare two groups with normal distribution, one-way ANOVA was used to compare multiple groups, and repeated measures ANOVA was used to compare the mean of each time point within groups. The nonparametric rank sum test was used for the comparison of non-normal distribution measurement data. Pearson correlation analysis was used to analyze the correlation between HGV and each index.Results:A total of 80 children were enrolled, 39 boys and 41 girls. Grouped by age, there were 20 in the 3.00-5.99 age group, 41 in the 6.00-9.99 age group, and 19 in the ≥10.00 age group. All patients after 24 months of treatment had a higher height ((135.13±13.17) cm), HtSDS (-0.73 (-1.04, -0.41)), body weight (29.25 (23.13, 35.00) kg), weight standard deviation score (WtSDS) (-0.44 (-1.03, 0.03)), and body mass index (BMI) (15.99 (14.90,16.92) kg/m 2) compared to before treatment ((115.44±12.87) cm, -2.11 (-2.57, -2.03), 20.00 (16.00,25.00) kg, -1.48 (-2.12, -0.89) and 15.30 (14.45, 16.21) kg/m 2) all increased, and the differences were statistically significant (all P<0.05). The increase in HtSDS in the group aged 3.00-5.99 (1.74±0.29) was higher than that in the group aged 6.00-9.99 (1.57±0.33) and ≥10.00 (1.39±0.45), and the difference was statistically significant ( F=4.84, P=0.010). All patients showed an increase in insulin-like growth factor 1 (IGF-1) (329.50 (268.00, 417.25) μg/L) and insulin-like growth factor binding globulin 3 (IGFBP-3) (6.27 (5.50,6.95) mg/L) after 24 months of treatment compared to before treatment (131.50 (96.48,177.25) μg/L, 4.07 (3.60,4.88) mg/L), with statistical significance (all P<0.05). After treatment for 3 months, 6 months, 12 months, 18 months, and 24 months, children aged ≥ 10.00 years old with IGF-1 (353.00 (221.00, 493.00), (414.84±147.91), 441.00 (287.00, 578.00), (421.68±138.30), 376.00 (290.00, 581.00) μg/L) were higher than these in 3.00-5.99 years old group (181.00 (151.25, 237.75), (216.30±68.48), 239.50 (216.75, 325.00), (284.30±89.12), 293.00 (245.25, 343.75)) μg/L and 6.00-9.99 age group (253.00 (193.50, 345.50), (294.59±90.37), 284.00 (217.50, 377.50), (325.76±90.04), 345.00 (265.00, 431.00) μg/L, the difference was statistically significant (all P<0.05). At 3 months, 6 months, 12 months, and 18 months of treatment, IGFBP-3 levels were observed in children aged ≥ 10.00 years old (6.15 (5.52, 6.46), (6.56±1.26), (6.78±1.33), (6.78±1.38) mg/L) higher than 3.00-5.99 years old group (4.69 (4.43,5.11), (5.18±0.63), (5.61±0.84), (6.08±1.00) mg/L) and 6.00-9.99 age group (5.51 (4.76, 6.35), (5.61±0.81), (5.72±0.78), (6.03±0.80) mg/L, the difference was statistically significant (all P<0.05). All children with HbA1C (5.40 (5.20, 5.58)%), fasting blood glucose (5.06 (4.76, 5.24) mmol/L), triglycerides (0.67 (0.53, 1.02) mmol/L), TyG index (2.24±0.48), and triglyceride/HDL-C ratio (1.05 (0.73, 1.50)) after 24 months of treatment compared to before treatment (5.10 (5.00, 5.28)%, 4.78 (4.51, 5.09) mmol/L, 0.57 (0.47, 0.72) mmol/L, (1.92±0.36), 0.86 (0.65, 1.08). The level of cholesterol increased, and the total cholesterol (3.74 (3.39, 4.31) mmol/L) decreased compared to before treatment (3.95(3.64, 4.54) mmol/L), with statistical significance (all P<0.05). Female patients had higher levels of triglycerides (0.79 (0.59, 1.09) mmol/L) and TyG index (2.31±0.49) than male patients (0.66 (0.53,0.89) mmol/L, (2.16±0.46)) after 18 months of treatment. The triglyceride/HDL-C at 12 months (1.10(0.67, 1.93)), 18 months (1.16(0.83, 1.68)), and 24 months (1.26 (0.79, 1.81)) of treatment ratio was also higher than male patients (0.76 (0.61, 1.09), 0.90 (0.72, 1.08), 0.98 (0.66, 1.30)). Female HDL-C levels at 18 months (1.52 (1.29,1.75) mmol/L) and 24 months (1.45(1.29,1.76) mmol/L) of treatment were significantly lower in males (1.72 (1.45, 1.84), 1.59 (1.43, 1.92) mmol/L) with statistical significance (all P<0.05). HGV was positively correlated with IGF-1 at 12 months ( r=0.243, P=0.030) , 18 months ( r=0.277, P=0.013) and 24 months ( r=0.289, P=0.009), and it was positively correlated with IGFBP-3 at 18 months ( r=0.242, P=0.030) and 24 months ( r=0.236, P=0.035), but it was negatively correlated with HDL-C at 18 months ( r=-0.331, P=0.003) and 24 months ( r=-0.281, P=0.012). Conclusions:RhGH can obviously improve HtSDS and WtSDS in GHD children. Growth factors, glucose metabolism and lipid metabolism should be monitored during the treatment. Especially for female patients (≥10.00 years old), we should closely monitor the indexes of glucose and lipid metabolism in order to avoid metabolic diseases.
7.Genetic analysis of a fetus with Farber lipogranulomatosis caused by ASAH1 gene variant
Yingwen LIU ; Lulu YAN ; Yuxin ZHANG ; Chunxiao HAN ; Haibo LI
Chinese Journal of Medical Genetics 2025;42(2):232-237
Objective:To explore the clinical characteristics and gene variant of a fetus with Farber lipogranulomatosis caused by ASAH1 gene variant. Methods:A fetus with Farber lipogranulomatosis caused by ASAH1 gene variant diagnosed at Women and Children′s Hospital of Ningbo University in August 2024 was selected as the subject. Clinical data and abortion tissue samples of the fetus and peripheral blood samples of its parents were collected for whole exome sequencing (WES). Sanger sequencing validation and bioinformatics analysis were performed on candidate variants. This study was approved by Women and Children′s Hospital of Ningbo University (Ethics No. EC2020-048). Results:Generalized skin oedema, pericardial effusion, right pleural effusion and increased bowel echogenicity of the fetus were founded by prenatal ultrasound. WES revealed that the fetus has harbored a homozygous c. 101C>A(p.Ser34Ter) variation in exon 2 of the ASAH1 gene. Sanger sequencing confirmed that both parents carry the heterozygous nonsense variation c. 101C>A (p.Ser34Ter) in ASAH1 gene, which has not been included in databases such as HGMD, ClinVar, 1000 Genomes, ExAC, dbSNP, and gnomAD. Based on the Standards and Guidelines for the Interpretation of Sequence Variants of the American College of Medical Genetics and Genomics (ACMG), the variant was predicted to be pathogenic (PM2_Supporting+ PVS1+ PM3_Supporting). The AlphaFold3 model protein structure prediction reveals that the c. 101C>A variant caused the premature appearance of a termination codon, resulting in only a small partial α-helix structure in the N-terminal of the encoded ASAH1 protein, with the complete loss of the α-helix structure in the core domain, which might lead to the loss of function of this protein. Conclusion:The c. 101C>A(p.Ser34Ter) variant of the ASAH1 gene probably underlay the Farber lipogranulomatosis with hydrops fetalis in this fetus. The newly discovered c. 101C>A(p.Ser34Ter) variant has enriched the mutational spectrum of Farber lipogranulomatosis.
8.Clinical phenotype and genetic analysis of a fetus with a novel mutation of OTX2 gene
Ying ZHOU ; Yuxin ZHANG ; Lulu YAN ; Changshui CHEN ; Haibo LI
Chinese Journal of Medical Genetics 2025;42(8):1011-1015
Objective:To investigate the clinical characteristics and genetic etiology of a fetus with bilateral ear malformation and microphthalmia.Methods:A fetus diagnosed with Syndromic Microphthalmia 5 (MCOPS5) on January 29, 2024 at Ningbo Women and Children′s Hospital was selected as the study subject. A retrospective study was conducted to collect clinical data. Peripheral blood samples (3 mL) were collected from the parents, and amniotic fluid (10 mL) was obtained from the fetus. Genomic DNA was extracted and subjected to whole-exome sequencing (WES). Candidate variants were validated by Sanger sequencing of the family members. The pathogenicity of the candidate variant was classified according to the guidelines from the American College of Medical Genetics and Genomics (ACMG). This study was approved by the Ethics Committee of Ningbo Women and Children′s Hospital (Ethics No.: EC2023-094).Results:The gestational age of the fetus was 23 + 2 weeks. Prenatal magnetic resonance imaging (MRI) revealed hypoplastic left external ear, bilateral reduced eyeball volume, and abnormal brain parenchyma development. WES has identified a heterozygous frameshift variant in the OTX2 gene (NM_021728.4: c. 706_725del, p. Thr236ProfsTer17). Sanger sequencing confirmed that neither parent has carried the same variant, indicating a de novo origin. According to the ACMG guidelines, this variant was classified as likely pathogenic (PVS1_Strong+ PM2_Supporting+ PS2_Supporting). Conclusion:The heterozygous frameshift variant (NM_021728.4: c. 706_725del) of the OTX2 gene probably underlay the pathogenesis of this fetus. Above finding has expanded the mutational spectrum of OTX2 gene and may contribute to the understanding of syndromic microphthalmia.
9.Clinical features and analysis of a case with Brain small vessel disease 1 with ocular anomalies due to variant of COL4A1 gene
Chunxiao HAN ; Lulu YAN ; Yuxin ZHANG ; Haibo LI
Chinese Journal of Medical Genetics 2025;42(4):495-499
Objective:To explore the genetic etiology of a child with brain small vessel disease 1 with ocular anomalies.Methods:A child who was adwstted to Ningbo Women and Children′s Hospital on May 28, 2022, was selected for the study. Clinical data were collected, and peripheral blood samples from the child and her parents were obtained for genomic DNA extraction. Whole exome sequencing (WES) was performed to screen for pathogenic variants. Candidate variants were validated via Sanger sequencing and subjected to bioinformatic analysis. This study was approved by the Medical Ethics Committee of Ningbo Women and Children′s Hospital (Ethics No. EC2020-048).Results:① The child was a 7-year-old female with a diagnosis of epilepsy. ② WES revealed that she has carried a heterozygous missense variant in the COL4A1 gene: c. 1792G>A (p.Gly598Ser). Sanger sequencing confirmed that her parents both had the wild-type genotype for this variant. Based on American College of Medical Genetics and Genomics (ACMG) Standards and Guidelines for the Interpretation of Sequence Variants, the variant were predicted to be a likely pathogenic (PS2+ PM1+ PM2_Supporting+ PP3). ③ Bioinformatics predicted that amino acid 598 was highly conserved in different species, formed hydrogen bond with Asp599 after becoming Ser598. Conclusion:The heterozygous missense variant of the COL4A1 gene c. 1792G>A (p.G598S) could be the pathogenic cause of this child with Brain small vessel disease 1 with ocular anomalies.
10.Genetic analysis for a pedigree with Structural heart defects and renal anomalies syndrome caused by variants of TMEM260 gene and a literature review
Lulu YAN ; Jinghui ZOU ; Juan CAO ; Jinxiang ZHANG ; Yuxin ZHANG ; Chunxiao HAN ; Yingwen LIU ; Haibo LI
Chinese Journal of Medical Genetics 2025;42(4):460-468
Objective:To explore the genetic characteristics of a fetus affected with Structural heart defects and renal anomalies syndrome (SHDRA).Methods:A pedigree with SHDRA (fetus and the parents) who had visited the Affiliated Women and Children′s Hospital of Ningbo University in April 2023 was selected as the study subject. Clinical data of the family were collected. A total of 10 mL of amniotic fluid cells from the fetus and 5 mL of peripheral blood samples from the parents were collected for genomic DNA extraction. Trio whole-exome sequencing (Trio-WES) was performed, and Sanger sequencing was used to validate candidate variants in the family. The identified variants were classified according to the Standards and Guidelines for the Interpretation of Sequence Variants established by the American College of Medical Genetics and Genomics (ACMG) (hereinafter referred to as the " ACMG Guidelines). Relevant research literature on SHDRA in domestic and international databases were searched for literature review. This study was approved by the Affiliated Women and Children′s Hospital of Ningbo University (Ethics No. EC2023-094).Results:①In this family, prenatal ultrasound at 18 weeks of gestation revealed left renal multicystic dysplasia in the fetus. After birth, the infant exhibited an ostium secundum atrial septal defect, patent ductus arteriosus, and left renal multicystic dysplasia. Trio-WES revealed that the fetus had carried c. 344dup(p.L116Afs*32) and c. 90_104dup(p.Ala31_Ala35dup) compound heterozygous variants in the TMEM260 gene, which were respectively inherited from its father and mother. According to the ACMG guidelines, the c. 344dup(p.L116Afs*32) and c. 90_104dup (p.Ala31_Ala35dup) variants were classified as pathogenic (PM2_Supporting+ PVS1+ PP4) and likely pathogenic (PM2_Supporting+ PM4+ PM3+ PP4), respectively. ②According to the literature search strategy set for this study, a total of 6 literature was retrieved, involving 25 SHDRA patients from 20 families. Together with the patients in this study, there were 14 TMEM260 gene variants, most of which were frameshift variants (7 types) and had located in exons 3, 11 and 13. The main clinical features of SHDRA were congenital heart malformation, renal abnormality and neurodevelopmental abnormality, and there was a lack of genotype-phenotype correlation. Conclusion:The c. 344dup(p.L116Afs*32) and c. 90_104dup(p.Ala31_Ala35dup) variants of the TMEM260 gene probably underlay the SHDRA in this family. Above finding has provided a basis for clinical diagnosis and genetic counseling for the family.

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