Abstract
We provide a detailed clinical and molecular characterization of an 11-year-old female patient presenting with neurodevelopmental delay (NDD), intellectual disability (ID), seizures, stereotypies and dysmorphic features. Chromosomal microarrays analysis (CMA) detected a small, rare de novo deletion on chromosome 12q24.31 encompassing 31 protein-coding RefSeq genes and a microRNA. Phenotypic comparison with molecularly well-defined cases previously reported in the literature harboring an overlapping 12q24.31 microdeletion indicate that these patients shared common clinical features including neurodevelopmental delay, intellectual disability and behavioral problems. Also, seizures and dysmorphic features are frequent and a consistent pattern was recognized. Since there are remarkable resemblance between the patient described here and at least another one previously reported, our report is provides supportive evidence for the existence of an emerging syndrome caused by a microdeletion in 12q24.31. We propose a minimal region shared among patients contributing to the etiology of the common clinical features observed suggesting as candidate, for the first time, the gene SETD1B which is a component of a histone methyltransferase complex. In addition, we speculate on the possible contributive role of the MIR4304 to some clinical features observed in our patient. Evaluation of more patients with well-characterized deletions within 12q24.31, as well as careful clinical assessment of them, is needed to corroborate our hypothesis, to perform a more detailed genotype-phenotype correlation and, finally, to fully delineate this emerging icrodeletion syndrome.
| Original language | English |
|---|---|
| Pages (from-to) | 438-444 |
| Number of pages | 7 |
| Journal | American Journal of Medical Genetics, Part A |
| Volume | 167 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 1 2015 |
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Keywords
- 12q24.31 microdeletion
- Chromosomal microarrays analysis
- Genotype-phenotype correlation
ASJC Scopus subject areas
- Genetics(clinical)
- Genetics
- Medicine(all)
Cite this
Microdeletion of 12q24.31 : Report of a girl with intellectual disability, stereotypies, seizures and facial dysmorphisms. / Palumbo, Orazio; Palumbo, Pietro; Delvecchio, Maurizio; Palladino, Teresa; Stallone, Raffaella; Crisetti, Matteo; Zelante, Leopoldo; Carella, Massimo.
In: American Journal of Medical Genetics, Part A, Vol. 167, No. 2, 01.02.2015, p. 438-444.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Microdeletion of 12q24.31
T2 - Report of a girl with intellectual disability, stereotypies, seizures and facial dysmorphisms
AU - Palumbo, Orazio
AU - Palumbo, Pietro
AU - Delvecchio, Maurizio
AU - Palladino, Teresa
AU - Stallone, Raffaella
AU - Crisetti, Matteo
AU - Zelante, Leopoldo
AU - Carella, Massimo
PY - 2015/2/1
Y1 - 2015/2/1
N2 - We provide a detailed clinical and molecular characterization of an 11-year-old female patient presenting with neurodevelopmental delay (NDD), intellectual disability (ID), seizures, stereotypies and dysmorphic features. Chromosomal microarrays analysis (CMA) detected a small, rare de novo deletion on chromosome 12q24.31 encompassing 31 protein-coding RefSeq genes and a microRNA. Phenotypic comparison with molecularly well-defined cases previously reported in the literature harboring an overlapping 12q24.31 microdeletion indicate that these patients shared common clinical features including neurodevelopmental delay, intellectual disability and behavioral problems. Also, seizures and dysmorphic features are frequent and a consistent pattern was recognized. Since there are remarkable resemblance between the patient described here and at least another one previously reported, our report is provides supportive evidence for the existence of an emerging syndrome caused by a microdeletion in 12q24.31. We propose a minimal region shared among patients contributing to the etiology of the common clinical features observed suggesting as candidate, for the first time, the gene SETD1B which is a component of a histone methyltransferase complex. In addition, we speculate on the possible contributive role of the MIR4304 to some clinical features observed in our patient. Evaluation of more patients with well-characterized deletions within 12q24.31, as well as careful clinical assessment of them, is needed to corroborate our hypothesis, to perform a more detailed genotype-phenotype correlation and, finally, to fully delineate this emerging icrodeletion syndrome.
AB - We provide a detailed clinical and molecular characterization of an 11-year-old female patient presenting with neurodevelopmental delay (NDD), intellectual disability (ID), seizures, stereotypies and dysmorphic features. Chromosomal microarrays analysis (CMA) detected a small, rare de novo deletion on chromosome 12q24.31 encompassing 31 protein-coding RefSeq genes and a microRNA. Phenotypic comparison with molecularly well-defined cases previously reported in the literature harboring an overlapping 12q24.31 microdeletion indicate that these patients shared common clinical features including neurodevelopmental delay, intellectual disability and behavioral problems. Also, seizures and dysmorphic features are frequent and a consistent pattern was recognized. Since there are remarkable resemblance between the patient described here and at least another one previously reported, our report is provides supportive evidence for the existence of an emerging syndrome caused by a microdeletion in 12q24.31. We propose a minimal region shared among patients contributing to the etiology of the common clinical features observed suggesting as candidate, for the first time, the gene SETD1B which is a component of a histone methyltransferase complex. In addition, we speculate on the possible contributive role of the MIR4304 to some clinical features observed in our patient. Evaluation of more patients with well-characterized deletions within 12q24.31, as well as careful clinical assessment of them, is needed to corroborate our hypothesis, to perform a more detailed genotype-phenotype correlation and, finally, to fully delineate this emerging icrodeletion syndrome.
KW - 12q24.31 microdeletion
KW - Chromosomal microarrays analysis
KW - Genotype-phenotype correlation
UR - http://www.scopus.com/inward/record.url?scp=84921385996&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84921385996&partnerID=8YFLogxK
U2 - 10.1002/ajmg.a.36872
DO - 10.1002/ajmg.a.36872
M3 - Article
C2 - 25428890
AN - SCOPUS:84921385996
VL - 167
SP - 438
EP - 444
JO - American Journal of Medical Genetics, Part A
JF - American Journal of Medical Genetics, Part A
SN - 1552-4825
IS - 2
ER -