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Journal Article
Molecular cytogenetic characterization of Jacobsen syndrome (11q23.3-q25 deletion) in a fetus associated with double outlet right ventricle, hypoplastic left heart syndrome and ductus venosus agenesis on prenatal ultrasound.
Taiwanese Journal of Obstetrics & Gynecology 2017 Februrary
OBJECTIVE: We present molecular cytogenetic characterization of Jacobsen syndrome (11q23.3-q25 deletion) in a fetus associated with double outlet right ventricle (DORV), hypoplastic left heart syndrome (HLHS), and ductus venosus (DV) agenesis on prenatal ultrasound.
CASE REPORT: A 26-year-old woman underwent prenatal ultrasound examination at 22 weeks of gestation, which revealed intrauterine growth restriction, short femurs, DORV, HLHS, DV agenesis, single umbilical artery, and curly fourth toe of the left foot. The parents elected to terminate the pregnancy, and a 500-g female fetus was delivered at 23 weeks of gestation with facial dysmorphism, bilateral camptodactyly, and hammertoes. The parental karyotypes were normal. Cytogenetic analysis of the cord blood and umbilical cord revealed a karyotype of 46,XX,del(11)(q23). Array comparative genomic hybridization analysis of the DNA extracted from the umbilical cord revealed a 14.38-Mb deletion of 11q23.3-q25 encompassing BSX, ETS1, FLI1, and ARHGAP32. Metaphase fluorescence in situ hybridization analysis using the probes RP11-209L12 (11q25) and RP11-25M7 (11q11) showed a distal 11q deletion in the aberrant chromosome 11 in 17/17 cells examined.
CONCLUSION: Prenatal diagnosis of DORV, HLHS, DV agenesis associated with intrauterine growth restriction and short limbs should include a differential diagnosis of Jacobsen syndrome.
CASE REPORT: A 26-year-old woman underwent prenatal ultrasound examination at 22 weeks of gestation, which revealed intrauterine growth restriction, short femurs, DORV, HLHS, DV agenesis, single umbilical artery, and curly fourth toe of the left foot. The parents elected to terminate the pregnancy, and a 500-g female fetus was delivered at 23 weeks of gestation with facial dysmorphism, bilateral camptodactyly, and hammertoes. The parental karyotypes were normal. Cytogenetic analysis of the cord blood and umbilical cord revealed a karyotype of 46,XX,del(11)(q23). Array comparative genomic hybridization analysis of the DNA extracted from the umbilical cord revealed a 14.38-Mb deletion of 11q23.3-q25 encompassing BSX, ETS1, FLI1, and ARHGAP32. Metaphase fluorescence in situ hybridization analysis using the probes RP11-209L12 (11q25) and RP11-25M7 (11q11) showed a distal 11q deletion in the aberrant chromosome 11 in 17/17 cells examined.
CONCLUSION: Prenatal diagnosis of DORV, HLHS, DV agenesis associated with intrauterine growth restriction and short limbs should include a differential diagnosis of Jacobsen syndrome.
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