Rhizomelic Chondrodysplasia Punctata Type I is one of the rare peroxisome disorders. We report the case of a newborn white male that developed seizures and skeletal dysmorphism. The baby had short humerus bones with s...Rhizomelic Chondrodysplasia Punctata Type I is one of the rare peroxisome disorders. We report the case of a newborn white male that developed seizures and skeletal dysmorphism. The baby had short humerus bones with stippled epiphy-ses, consistent with the disease. He had also delay in myelinization on brain MRI with bilateral subependymal cysts over the atria and frontal horns of the lateral ventricles. Usually, infants with this disorder do not live long. This unfor-tunate little patient died at 5 weeks age from pneumonia. We emphasize the importance of antenatal screening for these disorders especially when a family history of dysmorphism is positive.展开更多
目的对2021年1月陆军军医大学第二附属医院接诊的1例Schmid型干骺端软骨发育不全(Schmid type metaphyseal chondrodysplasia,SMCD)家系进行疾病表型与基因型分析,结合文献复习探讨其防治手段。方法对先证者进行家系调查及系谱分析,收...目的对2021年1月陆军军医大学第二附属医院接诊的1例Schmid型干骺端软骨发育不全(Schmid type metaphyseal chondrodysplasia,SMCD)家系进行疾病表型与基因型分析,结合文献复习探讨其防治手段。方法对先证者进行家系调查及系谱分析,收集先证者及家系成员的临床资料,采用全外显子组测序明确突变基因,并通过Sanger测序验证和家系共分离分析,同时结合ACMG指南进行生物信息学分析来评价变异的致病性。结果在家系患者中发现COL10A1基因存在新的杂合错义突变c.1843T>G(p.Tyr615Asp),该位点所在区域在不同物种之间高度保守,此突变可能通过影响X型胶原(α1)蛋白的三聚化及其与细胞外基质分子结合导致疾病发生。结论发现了1种SMCD的新突变,丰富了SMCD患者的突变谱,为SMCD的预防、诊断及治疗提供理论依据。展开更多
目的对2021年10月我院接诊的1例Schmid型干骺端软骨发育不全(Schmid type metaphyseal chondrodysplasia,SMCD)患儿的临床资料进行回顾性分析。方法收集先证者及其家系成员临床资料并分析其临床特点。对先证者父母、妹妹及其进行家系全...目的对2021年10月我院接诊的1例Schmid型干骺端软骨发育不全(Schmid type metaphyseal chondrodysplasia,SMCD)患儿的临床资料进行回顾性分析。方法收集先证者及其家系成员临床资料并分析其临床特点。对先证者父母、妹妹及其进行家系全外显子测序。结果先证者,男,14岁,因发现身材矮小7余年,来院就诊。双下肢全长X线片提示双侧髋臼变浅拉长,双侧股骨颈变短增粗,颈干角变小,大粗隆升高且增大,坐骨较细小,闭孔扁长;双膝关节各骨对位尚可,双侧股骨远端及胫腓骨近端干骺端骨质形态欠规则,密度欠均匀,多发硬化边;双踝关节各骨对位好,双侧胫腓骨远端干骺端骨质欠规整,密度自然,符合干骺端软骨发育不全。完善基因检测提示在COL10A1基因(OMIM编号:156500)外显子区域发现一处杂合突变c.53G>A(鸟嘌呤>腺嘌呤),导致氨基酸改变p.Gly18Glu(甘氨酸>谷氨酸),目前国内尚未见报道。结合患儿临床表现及检查结果,诊断为SMCD。结论该病例扩展了COL1OA1基因的突变位点,并提示临床医师对怀疑SMCD的患儿尽快完善X线片及基因检测,对遗传倾向的家族应完善遗传咨询。展开更多
文摘Rhizomelic Chondrodysplasia Punctata Type I is one of the rare peroxisome disorders. We report the case of a newborn white male that developed seizures and skeletal dysmorphism. The baby had short humerus bones with stippled epiphy-ses, consistent with the disease. He had also delay in myelinization on brain MRI with bilateral subependymal cysts over the atria and frontal horns of the lateral ventricles. Usually, infants with this disorder do not live long. This unfor-tunate little patient died at 5 weeks age from pneumonia. We emphasize the importance of antenatal screening for these disorders especially when a family history of dysmorphism is positive.
文摘目的对2021年1月陆军军医大学第二附属医院接诊的1例Schmid型干骺端软骨发育不全(Schmid type metaphyseal chondrodysplasia,SMCD)家系进行疾病表型与基因型分析,结合文献复习探讨其防治手段。方法对先证者进行家系调查及系谱分析,收集先证者及家系成员的临床资料,采用全外显子组测序明确突变基因,并通过Sanger测序验证和家系共分离分析,同时结合ACMG指南进行生物信息学分析来评价变异的致病性。结果在家系患者中发现COL10A1基因存在新的杂合错义突变c.1843T>G(p.Tyr615Asp),该位点所在区域在不同物种之间高度保守,此突变可能通过影响X型胶原(α1)蛋白的三聚化及其与细胞外基质分子结合导致疾病发生。结论发现了1种SMCD的新突变,丰富了SMCD患者的突变谱,为SMCD的预防、诊断及治疗提供理论依据。
文摘目的对2021年10月我院接诊的1例Schmid型干骺端软骨发育不全(Schmid type metaphyseal chondrodysplasia,SMCD)患儿的临床资料进行回顾性分析。方法收集先证者及其家系成员临床资料并分析其临床特点。对先证者父母、妹妹及其进行家系全外显子测序。结果先证者,男,14岁,因发现身材矮小7余年,来院就诊。双下肢全长X线片提示双侧髋臼变浅拉长,双侧股骨颈变短增粗,颈干角变小,大粗隆升高且增大,坐骨较细小,闭孔扁长;双膝关节各骨对位尚可,双侧股骨远端及胫腓骨近端干骺端骨质形态欠规则,密度欠均匀,多发硬化边;双踝关节各骨对位好,双侧胫腓骨远端干骺端骨质欠规整,密度自然,符合干骺端软骨发育不全。完善基因检测提示在COL10A1基因(OMIM编号:156500)外显子区域发现一处杂合突变c.53G>A(鸟嘌呤>腺嘌呤),导致氨基酸改变p.Gly18Glu(甘氨酸>谷氨酸),目前国内尚未见报道。结合患儿临床表现及检查结果,诊断为SMCD。结论该病例扩展了COL1OA1基因的突变位点,并提示临床医师对怀疑SMCD的患儿尽快完善X线片及基因检测,对遗传倾向的家族应完善遗传咨询。
