Abstract:
BACKGROUND:Pure interstitial duplications of chromosome band 4p16.3 represent an infrequent chromosomal finding with, to the best of our knowledge, only two patients to date reported. CASE PRESENTATION:We report on a 13-year-old boy showing a set of dysmorphic facial features, attention deficit hyperactivity disorders, learning difficulties, speech and cognitive delays, overgrowth and musculoskeletal anomalies in whom an interstitial duplication of about 400 kb in 4p16.3 was detected by SNP-array analysis. The duplication includes the complete coding sequence of FAM53A, SLBP, TMEM129 and TACC3 genes and the first exon of the FGFR3 gene. Phenotypic comparison with previously described patients harboring a microduplication of similar size and position contributes to better define the clinical correlation of 4p16.3 microduplications, suggesting the existence of a novel distinct and phenotypically recognizable syndrome. In addition, being the duplication identified in our case the smallest so far reported, it allowed us to refine the smallest region of overlap among patients to 222 kb, enabling a more accurate genotype-phenotype correlation for 4p16.3 microduplications. CONCLUSIONS:Our case report provide clinical and molecular evidences supporting the existence of a novel 4p16.3 microduplication syndrome. The genes FAM53A, TACC3 and FGFR3 seems to play a key role in the etiology of the clinical phenotype. Interestingly, our patient is the oldest described so far and for this reason useful to delineate the long-term prognosis of these patients.
journal_name
Mol Cytogenetjournal_title
Molecular cytogeneticsauthors
Palumbo O,Palumbo P,Ferri E,Riviello FN,Cloroformio L,Carella M,Di Giacomo MCdoi
10.1186/s13039-015-0119-6subject
Has Abstractpub_date
2015-02-28 00:00:00pages
15issn
1755-8166pii
119journal_volume
8pub_type
abstract:BACKGROUND:Copy number variations (CNVs) having no (obvious) clinical effects were rediscovered as major part of human genome in 2004. However, for every cytogeneticist microscopically visible harmless CNVs (CG-CNVs) are well known since decades. Harmless CG-CNVs can be present as heterochromatic or even as euchromatic...
journal_title:Molecular cytogenetics
pub_type: 杂志文章,评审
doi:10.1186/s13039-016-0216-1
更新日期:2016-01-22 00:00:00
abstract:BACKGROUND:Myelodysplastic syndromes (MDS) are a heterogeneous group of clonal hematological malignancies. In MDS patients with a fibrotic bone marrow the aspiration of cells often fails (dry-tap), which hampers standard karyotyping. Obtaining genetic data from these fibrotic marrows is therefore challenging, and up ti...
journal_title:Molecular cytogenetics
pub_type: 杂志文章
doi:10.1186/s13039-015-0136-5
更新日期:2015-05-28 00:00:00
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journal_title:Molecular cytogenetics
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doi:10.1186/s13039-020-00479-1
更新日期:2020-04-10 00:00:00
abstract:BACKGROUND:Microarray-based comparative genomic hybridization (aCGH) is a powerful diagnostic tool for the detection of DNA copy number gains and losses associated with chromosome abnormalities, many of which are below the resolution of conventional chromosome analysis. It has been presumed that whole-genome oligonucle...
journal_title:Molecular cytogenetics
pub_type: 杂志文章
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journal_title:Molecular cytogenetics
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journal_title:Molecular cytogenetics
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journal_title:Molecular cytogenetics
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journal_title:Molecular cytogenetics
pub_type: 杂志文章
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journal_title:Molecular cytogenetics
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更新日期:2013-09-08 00:00:00
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journal_title:Molecular cytogenetics
pub_type: 杂志文章
doi:10.1186/1755-8166-2-18
更新日期:2009-09-26 00:00:00
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journal_title:Molecular cytogenetics
pub_type: 杂志文章
doi:10.1186/s13039-015-0212-x
更新日期:2016-01-06 00:00:00
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journal_title:Molecular cytogenetics
pub_type: 杂志文章
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更新日期:2013-10-16 00:00:00
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journal_title:Molecular cytogenetics
pub_type:
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journal_title:Molecular cytogenetics
pub_type: 杂志文章
doi:10.1186/1755-8166-1-17
更新日期:2008-08-07 00:00:00
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pub_type: 杂志文章
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更新日期:2018-10-19 00:00:00
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journal_title:Molecular cytogenetics
pub_type: 杂志文章
doi:10.1186/s13039-015-0114-y
更新日期:2015-02-03 00:00:00
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pub_type:
doi:10.1186/s13039-018-0357-5
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journal_title:Molecular cytogenetics
pub_type:
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journal_title:Molecular cytogenetics
pub_type: 杂志文章
doi:10.1186/s13039-018-0369-1
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pub_type: 杂志文章
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更新日期:2012-11-15 00:00:00
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journal_title:Molecular cytogenetics
pub_type: 杂志文章
doi:10.1186/s13039-015-0210-z
更新日期:2016-01-26 00:00:00
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journal_title:Molecular cytogenetics
pub_type: 杂志文章
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更新日期:2014-08-22 00:00:00
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journal_title:Molecular cytogenetics
pub_type: 杂志文章
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journal_title:Molecular cytogenetics
pub_type: 杂志文章
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更新日期:2009-05-29 00:00:00
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更新日期:2016-02-25 00:00:00
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journal_title:Molecular cytogenetics
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journal_title:Molecular cytogenetics
pub_type: 杂志文章
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更新日期:2011-09-08 00:00:00
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journal_title:Molecular cytogenetics
pub_type:
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更新日期:2016-07-25 00:00:00