[Genotype-phenotype correlation in a newborn with de novo 3p25 deletion syndrome].

Orv Hetil

1 Magyar Honvédség Egészségügyi Központ, Központi Laboratóriumi Diagnosztikai Osztály, Klinikai Genetikai Részleg Budapest, Podmaniczky utca 111., 1062 Magyarország.

Published: March 2022

Összefoglaló. A 3p25-deletiós szindróma nagyon ritka genetikai rendellenesség, a nemzetközi szakirodalom jelenleg kevesebb mint 60 esetet ír le. A kórképre általánosan jellemző a növekedési és pszichomotoros visszamaradottság, a microcephalia, a hypotonia, a veleszületett szívfejlődési rendellenesség, a ptosis és micrognathia, de nagyon ritkán előfordul klinikai tünetek nélküli megjelenése is. Általában újonnan kialakult rendellenesség, bár egyes esetekben előfordulhat familiáris formája. A kromoszomális töréspont változó helyen fordul elő. Közleményünkben egy 3p25-deletiós szindrómával született gyermek esetét mutatjuk be: a deletiót kariotipizálással és fluoreszcens in situ hibridizációval igazoltuk, majd microarray-komparatív genomhibridizálással meghatároztuk a pontos töréspontot és a hiányzó géneket. Az érintett régióban 43 OMIM-gént találtunk, melyek szerepet játszanak a megkésett pszichomotoros és növekedési elmaradásban, valamint az intellektuális zavarban. A genetikai háttér pontos karakterizálása hozzásegít a várható tünetek és a prognózis meghatározásához, egyben támpontot biztosíthat a jövőbeli terápia tervezéséhez és a személyre szabott fejlesztés kivitelezéséhez. Orv Hetil. 2022; 163(12): 478-483. Summary. The 3p25 deletion syndrome is a very rare genetic abnormality, characterized by growth and psychomotor retardation, microcephaly, hypotonia, congenital heart defects, ptosis and micrognathia. Less than 60 cases have been published in the literature so far. However, a few patients with normal or mild phenotype have also been described. The majority of the cases are de novo mutations, with variable chromosomal breakpoints. We present the case of a newborn infant with 3p25 deletion syndrome, whose genetic analysis was done by karyotyping, fluorescent in situ hybridization and array comparative genomic hybridization. The latter method enabled us to define the precise breakpoint and the genes involved in the deletion, thus we could provide information for further clinical management. We identified 43 OMIM genes in the deleted region, which may have a causative effect on the pscychomotor and developmental delay and also on the intellectual disability. Exact cytogenomic characterisation of a rare genetic syndrome may allow to employ personalised treatment. Orv Hetil. 2022; 163(12): 478-483.

Download full-text PDF

Source
http://dx.doi.org/10.1556/650.2022.32389DOI Listing

Publication Analysis

Top Keywords

3p25 deletion
12
orv hetil
8
hetil 2022
8
2022 16312
8
16312 478-483
8
deletion syndrome
8
rare genetic
8
és
7
[genotype-phenotype correlation
4
correlation newborn
4

Similar Publications

[Prenatal diagnosis of a fetus with mosaicism ring chromosome 2].

Zhonghua Yi Xue Yi Chuan Xue Za Zhi

November 2024

Central Laboratory for Birth Defects Prevention and Control, Women and Children's Hospital of Ningbo University, Ningbo, Zhejiang 315012, China.

Objective: To explore the genetic basis for a fetus with increased risk for Down syndrome and cardiac anomalies discovered by prenatal ultrasonography.

Methods: A pregnant woman presented at the Women and Children's Hospital of Ningbo University on August 21, 2023 were selected as the study subject. Clinical data were retrospectively analyzed.

View Article and Find Full Text PDF

Contribution of copy number variations to education, socioeconomic status and cognition from a genome-wide study of 305,401 subjects.

Mol Psychiatry

August 2024

Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China.

Educational attainment (EA), socioeconomic status (SES) and cognition are phenotypically and genetically linked to health outcomes. However, the role of copy number variations (CNVs) in influencing EA/SES/cognition remains unclear. Using a large-scale (n = 305,401) genome-wide CNV-level association analysis, we discovered 33 CNV loci significantly associated with EA/SES/cognition, 20 of which were novel (deletions at 2p22.

View Article and Find Full Text PDF

Objective: We present prenatal diagnosis of familial 3p26.3p25.3 deletion in a pregnancy associated with a favorable fetal outcome and asymptomatic carrier parent and family members in three generations.

View Article and Find Full Text PDF

[Prenatal diagnosis of a fetus with 1p36 deletion syndrome and 3p26.3p25.2 duplication].

Zhonghua Yi Xue Yi Chuan Xue Za Zhi

May 2024

Department of Gynaecology and Obstetrics, Linyi People's Hospital, Linyi, Shandong 2760033, China.

Objective: To explore the characteristics of a fetus with chromosome 1p36 deletion syndrome and 3p26.3p25.2 duplication.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!