BACKGROUND Congenital lymphangiectasia is a rare disease characterized by dilated interstitial lymphatic vessels and cystic expansion of the lymphatic vessels.Congenital lymphangiectasia can affect various organ syste...BACKGROUND Congenital lymphangiectasia is a rare disease characterized by dilated interstitial lymphatic vessels and cystic expansion of the lymphatic vessels.Congenital lymphangiectasia can affect various organ systems;however,it frequently occurs in the lungs accompanied with unexplained pleural effusion.Further,it might not be diagnosed during prenatal examination owing to the absence of pronounced abnormalities.However,after birth the newborn rapidly develops respiratory distress that quickly deteriorates.Genetic variations in proteins controlling the development of lymphatic vessels contribute to the pathophysiology of this disease.We report a rare case of heterozygous mutation of ADAMTS3 and FLT4 genes,which have not been reported previously.CASE SUMMARY We analysed the case of a neonate who had presented with only pleural effusion at a late gestational age and eventually died due to its inability to establish spontaneous breathing after birth.An autopsy revealed lymphangiectasia of the organ systems.Further,whole exome sequencing revealed heterozygous mutations of the lymphangiogenesis-controlling genes,ADAMTS3 and FLT4,and Sanger verification revealed similar lesions in the mother with no symptoms.CONCLUSION Considering the presented case,obstetricians should observe unexplained foetal pleural effusion,and perform pathology analysis and whole exome sequencing for a conclusive diagnosis and prompt treatment.展开更多
目的:探讨伴有FMS样酪氨酸激酶3-内部串联重复突变(FLT3-ITD)急性髓系白血病(AML)的临床特点和对治疗的反应。方法:回顾性分析从2014年1月到2017年7月初诊AML(除M3型)128例,分为FLT3-ITD突变和无FLT3-ITD突变组。FLT3-ITD和NPM1突变采用...目的:探讨伴有FMS样酪氨酸激酶3-内部串联重复突变(FLT3-ITD)急性髓系白血病(AML)的临床特点和对治疗的反应。方法:回顾性分析从2014年1月到2017年7月初诊AML(除M3型)128例,分为FLT3-ITD突变和无FLT3-ITD突变组。FLT3-ITD和NPM1突变采用PCR和基因测序法检测。采用标准3+7方案或CAG作为首次诱导化疗方案。4人接受索拉非尼治疗。总生存期(OS)定义为从确诊到死亡或最后随访之间的持续时间。统计采用SPSS 17.0软件,总体生存(overall survival,OS)采用Kaplan Meier方法计算。结果:有临床资料可评价97例,4例FLT3-TKD突变(占4.1%),19例FLT3-ITD突变(占19.59%)。中位白细胞计数(WBC)、外周血幼稚细胞比例和乳酸脱氢酶(LDH)值在FLT3-ITD组明显升高,在FLT3-ITD突变组和无突变组分别为64.65(1.07-587.92)×109/L vs 39.68(0.45-203.81)×109/L(P=0.00)、69.62(16-99)%vs 36.35(0-92)%(P=0.00)和LDH 526(124-2729)U/L vs 265(20-1977)U/L(P=0.029)。同时合并NPM1突变的比率在FLT3-ITD组和无FLT3-ITD组分别为36.8%(7/19)和6.8%(5/74)(P=0.002)。CR+PR在FLT3-ITD组低于无突变组[31.6%(6/19)vs 64.9%(48/74)](P=0.028)。OS时间在FLT3-ITD组较无突变组明显缩短,分别为5和18个月(P=0.027)。OS在FLT3-ITD和NPM1双阳性患者与FLT3-ITD单阳性患者间无差异,均为5个月(P=0.880)。接受索拉非尼治疗的患者中位OS时间为13个月。结论:FLT3-ITD是AM L中的常见突变,FLT3-ITD AM L更易并发NPM1基因突变,表现有更高的白细胞数和外周血原始细胞及LDH水平,其首次治疗后的CR率低,总体生存差。展开更多
基金The Wu Jieping Medical Foundation Clinical Research Special Grant Fund in China,No.320.6750.2022-15-9.
文摘BACKGROUND Congenital lymphangiectasia is a rare disease characterized by dilated interstitial lymphatic vessels and cystic expansion of the lymphatic vessels.Congenital lymphangiectasia can affect various organ systems;however,it frequently occurs in the lungs accompanied with unexplained pleural effusion.Further,it might not be diagnosed during prenatal examination owing to the absence of pronounced abnormalities.However,after birth the newborn rapidly develops respiratory distress that quickly deteriorates.Genetic variations in proteins controlling the development of lymphatic vessels contribute to the pathophysiology of this disease.We report a rare case of heterozygous mutation of ADAMTS3 and FLT4 genes,which have not been reported previously.CASE SUMMARY We analysed the case of a neonate who had presented with only pleural effusion at a late gestational age and eventually died due to its inability to establish spontaneous breathing after birth.An autopsy revealed lymphangiectasia of the organ systems.Further,whole exome sequencing revealed heterozygous mutations of the lymphangiogenesis-controlling genes,ADAMTS3 and FLT4,and Sanger verification revealed similar lesions in the mother with no symptoms.CONCLUSION Considering the presented case,obstetricians should observe unexplained foetal pleural effusion,and perform pathology analysis and whole exome sequencing for a conclusive diagnosis and prompt treatment.
文摘目的:探讨伴有FMS样酪氨酸激酶3-内部串联重复突变(FLT3-ITD)急性髓系白血病(AML)的临床特点和对治疗的反应。方法:回顾性分析从2014年1月到2017年7月初诊AML(除M3型)128例,分为FLT3-ITD突变和无FLT3-ITD突变组。FLT3-ITD和NPM1突变采用PCR和基因测序法检测。采用标准3+7方案或CAG作为首次诱导化疗方案。4人接受索拉非尼治疗。总生存期(OS)定义为从确诊到死亡或最后随访之间的持续时间。统计采用SPSS 17.0软件,总体生存(overall survival,OS)采用Kaplan Meier方法计算。结果:有临床资料可评价97例,4例FLT3-TKD突变(占4.1%),19例FLT3-ITD突变(占19.59%)。中位白细胞计数(WBC)、外周血幼稚细胞比例和乳酸脱氢酶(LDH)值在FLT3-ITD组明显升高,在FLT3-ITD突变组和无突变组分别为64.65(1.07-587.92)×109/L vs 39.68(0.45-203.81)×109/L(P=0.00)、69.62(16-99)%vs 36.35(0-92)%(P=0.00)和LDH 526(124-2729)U/L vs 265(20-1977)U/L(P=0.029)。同时合并NPM1突变的比率在FLT3-ITD组和无FLT3-ITD组分别为36.8%(7/19)和6.8%(5/74)(P=0.002)。CR+PR在FLT3-ITD组低于无突变组[31.6%(6/19)vs 64.9%(48/74)](P=0.028)。OS时间在FLT3-ITD组较无突变组明显缩短,分别为5和18个月(P=0.027)。OS在FLT3-ITD和NPM1双阳性患者与FLT3-ITD单阳性患者间无差异,均为5个月(P=0.880)。接受索拉非尼治疗的患者中位OS时间为13个月。结论:FLT3-ITD是AM L中的常见突变,FLT3-ITD AM L更易并发NPM1基因突变,表现有更高的白细胞数和外周血原始细胞及LDH水平,其首次治疗后的CR率低,总体生存差。
