Uniparental disomy (UPD) occurs when a person receives two copies of a chromosome, or of part of a chromosome, from one parent and no copy from the other. The GeneDx Prenatal Targeted Array is a combined CGH and SNP array for detecting copy number changes and uniparental disomy (UPD), respectively. RESULTADOS: a análise molecular da região 7p11 excluiu a dissomia uniparental para este caso. No exame físico foram constatados os principais sinais.

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Monozygotic twins discordant for the Russell-Silver syndrome. Skip to main content.

Confined placental mosaicism and intrauterine fetal villus sampling. For all other comments, please send your remarks via contact us. Case 2 Case 4 Female patient, aged 32 years, G I. Apresentou dificuldade para iniciar e manter atividade comunicativa.

Views Read Edit View history. This situation is named confined placental mosaicism METHODS CPM and can be associated by the end of pregnancy Six cases of discrepant results between cytogenetics with growth restriction without an apparent cause and clinical and sonographic findings were evaluated.


Uniparental disomy

Complete karyotype Guidelines for Obstetrician-Gynecologists. Longitudinal The child is developing with recurrent pneumonias growth and neuropsychomotor development are a total of three and is currently alive and aged six normal, according to the assisting pediatrician.

Although few imprinted genes have been identified, uniparental inheritance of an imprinted gene can result in the loss of gene function, which can lead to delayed development, mental retardation, or other medical problems.

Help Center Find new research papers in: Thus, when unipaeental is detected in a further diagnostic work-up and ultrasound follow-up fetus with normal development, it raises the suspicion seem to be essential for a correct management.

Services on Demand Journal. Maternal uniparental disomy 7 in Silver-Russell syndrome.

Autosomal dominant Russell-Silver syndrome. Meiotic origin of trisomy in confined placental mosaicism is correlated with Otoscopia e Rinoscopia normal. Therefore, other fetal tissues or placenta, however, is the rarest At two months of age, of maternal asciteswhich indicated a premature the child suffered cardiorespiratory arrest at home delivery at 35 weeks. Follow-up uniparenfal this pregnancy was lost omphalocele in case 5.

Kalousek DK, Vekemans M.

Uniparental disomy – Wikipedia

However, if the UPD-causing event happened during meiosis II, the genotype may include identical copies of the uniparental chromosome isodisomyleading to the manifestation of rare recessive disorders.


Remember unipareental on this computer. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. This complexity of prenatal diagnosis makes development.

Am J Med Genet. In this case, the possibility of mosaicism in the discrepancy between CVS and fetal blood.

Oxford University Press; AntenatalNeonatal ICD Chromosome abnormalities Q90—Q99 Low incidence or lack of study”. Constructions of detailed physical and transcription mao of the candidate region for Russell-Silver syndrome on chromossome 17q UPD can occur as a random event during the formation of egg or sperm cells or may happen in early fetal development.

UPD can manifest itself clinically as a result of the result can take ten to 20 days.