Journals / Gülhane Tıp Dergisi / 2007 / Cilt: 49 - Sayı: 3

de novo translocation in a newborn with multiple congenital anomalies: 46,xx,t(1;18)(q31;p11)

Multipl konjenital anomalili bir yenidoğanda de novo translokasyon: 46,xx,t(1;18)(q31;p11)

Pages
195–198
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Herein we report a case with growth retardation, congenital cardiac defects, semilobar holoprosencephaly and de novo translocation between chromosomes 1 and 18.

📌 3 Key Takeaways

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Objective & Hypothesis:Translocation generally refers to a change of chromosomal fragments between two non-homologous chromosomes.
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Key Findings & Data:However, de novo translocations may cause phenotypic findings in 7-10% of the cases.
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Conclusion & Impact:Herein we report a case with growth retardation, congenital cardiac defects, semilobar holoprosencephaly and de novo translocation between chromosomes 1 and 18.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Holoprosensefali · Süt çocuğu · yenidoğan

Abstract

Translocation generally refers to a change of chromosomal fragments between two non-homologous chromosomes. Translocations can simply be divided into three subgroups; reciprocal, Robertsonian and interstitial. Reciprocal translocations may be seen in a "familial" pattern or they may be de novo. In a familial type, phenotypic finding is not expected. However, de novo translocations may cause phenotypic findings in 7-10% of the cases. However, reciprocal translocations, if stable, do not generally give any phenotypic findings. Phenotypic affection can be seen in the chromosomes of the children of these subjects if partial monosomy or trisomy occurs at the related chromosome. Herein we report a case with growth retardation, congenital cardiac defects, semilobar holoprosencephaly and de novo translocation between chromosomes 1 and 18.

Özet

Translokasyon, genellikle homolog olmayan iki kromozom arasında kromozomal parçaların değişimini tanımlar. Translokasyonlar resiprokal, Robertsonian ve interstisiyel olmak üzere üç alt gruba ayrılmaktadır. Resiprokal translokasyonlar ya "familyal" olabilir, ya da "de novo" yani ilk kez o bireyde görülebilir. Familyal translokasyonlarda fenotipik etkilenme beklenmez. Ancak de novo translokasyonlar %7-10 oranında fenotipik etkiye yol açabilmektedir. Ayrıca resiprokal translokasyonlar, dengeli olması durumunda da çoğu kez fenotipik bulgu vermez. Ancak bu bireylerin çocuklarında ilgili kromozomlarda parsiyel monozomi ya da parsiyel trizomiye bağlı olarak fenotipik etkilenme görülebilir. Burada 1 ve 18 no.lu kromozomlar arasında oluşmuş de novo translokasyona sahip gelişme geriliği, konjenital kalp hastalığı ve semilobar holoprozensefalisi olan bir olgu tartışılmıştır.

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Cite This Article

TUNÇ, T., TORUN, D., KOZAN, S., KUL, M., SARICI, S. Ü., KOCAOĞLU, M., ÖZCAN, O. (2007). de novo translocation in a newborn with multiple congenital anomalies: 46,xx,t(1;18)(q31;p11). Gülhane Tıp Dergisi, Cilt: 49 - Sayı: 3, 195–198. https://ajindex.com/articles/225592

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