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• W4214874771 abstract "Objective: To analyze the clinical manifestations and molecular pathogenesis of 18 patients with inherited protein S (PS) deficiency. Methods: Eighteen patients with inherited PS deficiency who were admitted to the Institute of Hematology & Blood Diseases Hospital from June 2016 to February 2019 were analyzed: activity of protein C (PC) and antithrombin (AT) , PS activity were measured for phenotype diagnosis; high throughput sequencing (HTS) was used for screening of coagulation disease-related genes; Sanger sequencing was used to confirm candidate variants; Swiss-model was used for three-dimensional structure analysis. Results: The PS:C of 18 patients ranged from 12.5 to 48.2 U/dL. Among them, 16 cases developed deep vein thrombosis, including 2 cases each with mesenteric vein thrombosis and cerebral infarction, and 1 case each with pulmonary embolism and deep vein thrombosis during pregnancy. A total of 16 PROS1 gene mutations were detected, and 5 nonsense mutations (c.134_162del/p.Leu45*, c.847G>T/p.Glu283*, c.995_996delAT/p.Tyr332*, c.1359G> A/p.Trp453*, c.1474C>T/p.Gln492*) , 2 frameshift mutations (c.1460delG/p.Gla487Valfs*9 and c.1747_1750delAATC/p.Asn583Wfs*9) and 1 large fragment deletion (exon9 deletion) were reported for the first time. In addition, the PS:C of the deep vein thrombosis during pregnancy case was 55.2 U/dL carrying PROC gene c.565C>T/p.Arg189Trp mutation. Conclusion: The newly discovered gene mutations enriched the PROS1 gene mutation spectrum which associated with inherited PS deficiency.目的： 分析18例遗传性蛋白S（PS）缺乏症患者的临床表现及分子致病机制。 方法： 对2016年7月至2019年2月就诊于中国医学科学院血液病医院的18例PS缺乏症患者进行回顾性分析，应用凝固法测定PS活性、应用发色底物法测定蛋白C（PC）和抗凝血酶（AT）活性并进行初步诊断，使用高通量测序（HTS）筛查凝血疾病相关基因变异并进行Sanger测序验证；使用Swiss-model软件进行三维结构分析。 结果： 18例患者中男15例，女3例，中位年龄37（14~62）岁。均有深静脉血栓栓塞病史，PS活性为12.5~48.2 U/dl。所有患者均检出PROS1基因变异，其中5个无义突变（c.134_162del/p.Leu45*、c.847G>T/p.Glu283*、c.995_996delAT/p.Tyr332*、c.1359G>A/p.Trp453*、c.1474C>T/p.Gln492*）、2个移码突变（c.1460delG/p.Gla487Valfs*9、c.1747_1750delAATC/p.Asn583Wfs*9）和1个大片段缺失（外显子9缺失）为首次报道。此外，1例妊娠期深静脉血栓形成女性患者的PS活性为55.2 U/dl，并且检出PROC基因c.565C>T/p.Arg189Trp突变。 结论： 该研究新发现的基因突变丰富了与遗传性PS缺乏症相关的PROS1基因突变谱。." @default.
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• W4214874771 date "2022-01-14" @default.
• W4214874771 modified "2023-09-27" @default.
• W4214874771 title "[Clinical manifestations and gene analysis of 18 cases of hereditary protein S deficiency]." @default.
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• W4214874771 doi "https://doi.org/10.3760/cma.j.issn.0253-2727.2022.01.010" @default.
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