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Tassano E, Jagannathan V, Drögemüller C, Leoni M, Hytönen MK, Severino M, Gimelli S, Cuoco C, Di Rocco M, Sanio K, Groves AK, Leeb T, Gimelli G. Congenital aural atresia associated with agenesis of internal carotid artery in a girl with a FOXI3 deletion. Am J Med Genet A 2015; 167A:537-44. [PMID: 25655429 DOI: 10.1002/ajmg.a.36895] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 10/31/2014] [Indexed: 11/11/2022]
Abstract
We report on the molecular characterization of a microdeletion of approximately 2.5 Mb at 2p11.2 in a female baby with left congenital aural atresia, microtia, and ipsilateral internal carotid artery agenesis. The deletion was characterized by fluorescence in situ hybridization, array comparative genomic hybridization, and whole genome re-sequencing. Among the genes present in the deleted region, we focused our attention on the FOXI3 gene. Foxi3 is a member of the Foxi class of Forkhead transcription factors. In mouse, chicken and zebrafish Foxi3 homologues are expressed in the ectoderm and endoderm giving rise to elements of the jaw as well as external, middle and inner ear. Homozygous Foxi3-/- mice have recently been generated and show a complete absence of the inner, middle, and external ears as well as severe defects in the jaw and palate. Recently, a 7-bp duplication within exon 1 of FOXI3 that produces a frameshift and a premature stop codon was found in hairless dogs. Mild malformations of the outer auditory canal (closed ear canal) and ear lobe have also been noted in a fraction of FOXI3 heterozygote Peruvian hairless dogs. Based on the phenotypes of Foxi3 mutant animals, we propose that FOXI3 may be responsible for the phenotypic features of our patient. Further characterization of the genomic region and the analysis of similar patients may help to demonstrate this point.
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Tassano E, Alpigiani MG, Calcagno A, Salvati P, De Miglio L, Fiorio P, Cuoco C, Gimelli G. Clinical and molecular delineation of a 16p13.2p13.13 microduplication. Eur J Med Genet 2015; 58:194-8. [PMID: 25596524 DOI: 10.1016/j.ejmg.2014.12.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 12/23/2014] [Indexed: 12/14/2022]
Abstract
The 16p13.3p13.1 region has been reported as a "critical" hotspot region for recurrent microdeletions/duplications, which may contribute to epilepsy, learning difficulties and facial dysmorphisms. Cytogenetic and array-CGH analyses were performed because of the clinical characteristics of the patient. The girl showed de novo 16p13.3p13.13 duplication spanning a region of ∼5.3 Mb. She presented brain anomalies, intellectual disability, epilepsy, facial and vertebral dysmorphisms. To our knowledge, this is the first reported case of 16p13.3p13.13 duplication; only three patients with an overlapping deletion in 16p13.2p13.13 were previously described. The duplicated region contains 21 OMIM genes and, six of them (RBFOX1, TMEM114, ABAT, PMM2, GRIN2A and, LITAF) were found to be associated with known diseases. Although no duplication of these genes has been described in the literature, we discuss here if they had some role in determining phenotype of our patient.
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Gimelli S, Capra V, Di Rocco M, Leoni M, Mirabelli-Badenier M, Schiaffino MC, Fiorio P, Cuoco C, Gimelli G, Tassano E. Interstitial 7q31.1 copy number variations disrupting IMMP2L gene are associated with a wide spectrum of neurodevelopmental disorders. Mol Cytogenet 2014; 7:54. [PMID: 25478008 PMCID: PMC4255718 DOI: 10.1186/s13039-014-0054-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 07/25/2014] [Indexed: 01/14/2023] Open
Abstract
Background Since the introduction of the array-CGH technique in the diagnostic workup of mental retardation, new recurrent copy number variations and novel microdeletion/microduplication syndromes were identified. These findings suggest that some genomic disorders have high penetrance but a wide range of phenotypic severity. Results We present the clinical and molecular description of four unrelated patients affected by neurodevelopmental disorders and overlapping 7q31.1 microdeletion/microduplication, identified by array-CGH and involving only part of the IMMP2L gene. Conclusion IMMP2L encodes an inner mitochondrial membrane protease-like protein, which is required for processing of cytochromes inside mitochondria. Numerous studies reported that this gene is implicated in behavioural disorders such as autistic spectrum disorders, attention-deficit hyperactivity disorders, and Gilles de la Tourette syndrome. We discuss the functions of the gene suggesting that IMMP2L may act as risk factor for neurological disease.
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Tassano E, Accogli A, Panigada S, Ronchetto P, Cuoco C, Gimelli G. Phenotypic and genetic characterization of a patient with a de novo interstitial 14q24.1q24.3 deletion. Mol Cytogenet 2014; 7:49. [PMID: 25076984 PMCID: PMC4115490 DOI: 10.1186/1755-8166-7-49] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 06/30/2014] [Indexed: 11/23/2022] Open
Abstract
Background Interstitial deletions of chromosome bands 14q24.1q24.3 are very rare with only three reported cases. Results We describe a 7-year-old boy with a 5.345 Mb de novo interstitial deletion at 14q24.1q24.3 band detected by array-CGH who had a complex phenotype characterized by seizures, congenital heart defects, dysmorphisms, psychomotor delay, and bronchopulmonary, skeletal, and brain anomalies. Conclusion The deleted region contains numerous genes, but we focused our attention on three of them (C14orf169, NUMB, and PSEN1), which could account, at least partially, for the phenotype of the boy. We therefore discuss the involvement of these genes and the observed phenotype compared to that of previously described patients.
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Vaccari CM, Romanini MV, Musante I, Tassano E, Gimelli S, Divizia MT, Torre M, Morovic CG, Lerone M, Ravazzolo R, Puliti A. De novo deletion of chromosome 11q12.3 in monozygotic twins affected by Poland Syndrome. BMC MEDICAL GENETICS 2014; 15:63. [PMID: 24885342 PMCID: PMC4051386 DOI: 10.1186/1471-2350-15-63] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Accepted: 05/23/2014] [Indexed: 12/22/2022]
Abstract
Background Poland Syndrome (PS) is a rare disorder characterized by hypoplasia/aplasia of the pectoralis major muscle, variably associated with thoracic and upper limb anomalies. Familial recurrence has been reported indicating that PS could have a genetic basis, though the genetic mechanisms underlying PS development are still unknown. Case presentation Here we describe a couple of monozygotic (MZ) twin girls, both presenting with Poland Syndrome. They carry a de novo heterozygous 126 Kbp deletion at chromosome 11q12.3 involving 5 genes, four of which, namely HRASLS5, RARRES3, HRASLS2, and PLA2G16, encode proteins that regulate cellular growth, differentiation, and apoptosis, mainly through Ras-mediated signaling pathways. Conclusions Phenotype concordance between the monozygotic twin probands provides evidence supporting the genetic control of PS. As genes controlling cell growth and differentiation may be related to morphological defects originating during development, we postulate that the observed chromosome deletion could be causative of the phenotype observed in the twin girls and the deleted genes could play a role in PS development.
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Mascelli S, Severino M, Raso A, Nozza P, Tassano E, Morana G, De Marco P, Merello E, Milanaccio C, Pavanello M, Rossi A, Cama A, Garrè ML, Capra V. Constitutional chromosomal events at 22q11 and 15q26 in a child with a pilocytic astrocytoma of the spinal cord. Mol Cytogenet 2014; 7:31. [PMID: 24860619 PMCID: PMC4032172 DOI: 10.1186/1755-8166-7-31] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 04/28/2014] [Indexed: 12/28/2022] Open
Abstract
We report on a 9-years-old patient with mild intellectual disability, facial dimorphisms, bilateral semicircular canal dysplasia, periventricular nodular heterotopias, bilateral hippocampal malrotation and abnormal cerebellar foliation, who developed mild motor impairment and gait disorder due to a pilocytic astrocytoma of the spinal cord. Array-CGH analysis revealed two paternal inherited chromosomal events: a 484.3 Kb duplication on chromosome 15q26.3 and a 247 Kb deletion on 22q11.23. Further, a second de novo 1.5 Mb deletion on 22q11.21 occurred. Chromosome 22 at q11.2 and chromosome 15 at q24q26 are considered unstable regions subjected to copy number variations, i.e. structural alterations of genome, mediated by low copy repeat sequences or segmental duplications. The link between some structural CNVs, which compromise fundamental processes controlling DNA stability, and genomic disorders suggest a plausible scenario for cancer predisposition. Evaluation of the genes at the breakpoints cannot account simultaneously for the phenotype and tumour development in this patient. The two paternal inherited CNVs arguably are not pathogenic and do not contribute to the clinical manifestations. Similarly, although the de novo large deletion at 22q11.21 overlaps with the Di George (DGS) critical region and results in haploinsufficiency of genes compromising critical processes for DNA stability, this case lacks several hallmarks of DGS.
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Gimelli S, Stathaki E, Béna F, Leoni M, Di Rocco M, Cuoco C, Tassano E. Recurrent microdeletion 2q21.1: report on a new patient with neurological disorders. Am J Med Genet A 2013; 164A:801-5. [PMID: 24591035 DOI: 10.1002/ajmg.a.36357] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 10/09/2013] [Indexed: 11/07/2022]
Abstract
Whole genome profiling such as array comparative genomic hybridization has identified novel genomic imbalances. Copy number studies led to an explosion of the discoveries of new segmental duplication-mediated deletions and duplications. These rearrangements are mostly the result of non-allelic homologous recombination (NAHR) between low-copy repeats or segmental duplications. We have identified an individual with a small, rare deletion on chromosome 2q21.1 with psychomotor delay, hyperactivity, and aggressive behavior. The rearranged region is flanked by large complex low-copy repeats and includes only five genes: GPR148, FAM123C (AMER3), ARHGEF4, FAM168B, and PLEKHB2. The comparison between our patient and the cases previously reported in the literature contributes to a better definition of genotype-phenotype correlation of 2q21.1 microdeletions.
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Capra V, Severino M, Rossi A, Nozza P, Doneda C, Perri K, Pavanello M, Fiorio P, Gimelli G, Tassano E, Di Battista E. Pituitary deficiency and congenital infiltrating lipomatosis of the face in a girl with deletion of chromosome 1q24.3q31.1. Am J Med Genet A 2013; 164A:495-9. [DOI: 10.1002/ajmg.a.36283] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 09/14/2013] [Indexed: 01/19/2023]
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Celle ME, Cuoco C, Porta S, Gimelli G, Tassano E. Interstitial 2q24.3 deletion including SCN2A and SCN3A genes in a patient with autistic features, psychomotor delay, microcephaly and no history of seizures. Gene 2013; 532:294-6. [DOI: 10.1016/j.gene.2013.09.073] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 09/16/2013] [Accepted: 09/19/2013] [Indexed: 10/26/2022]
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Gimelli S, Leoni M, Di Rocco M, Caridi G, Porta S, Cuoco C, Gimelli G, Tassano E. A rare 3q13.31 microdeletion including GAP43 and LSAMP genes. Mol Cytogenet 2013; 6:52. [PMID: 24279697 PMCID: PMC3906914 DOI: 10.1186/1755-8166-6-52] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Accepted: 10/28/2013] [Indexed: 11/26/2022] Open
Abstract
Background Interstitial deletions affecting the proximal long arm of chromosome 3 have been rarely reported in the literature. The deleted segments vary in localization and size with different breakpoints making genotype-phenotype correlation very difficult. Until now, a girl with a 1.9-Mb interstitial deletion of 3q13.2q13.31 and 14 novel patients with deletions in 3q11q23 have been reported. Results Here we report on a 7-year-old girl with neuropsychiatric disorders and renal, vascular and skeletal anomalies. Array-CGH analysis revealed a small rare inherited 3q13.31 deletion containing only two genes, GAP43 and LSAMP. The mutation analysis of the two genes was negative on the other non-deleted chromosome. GAP43 is considered a crucial component for an effective regenerative response in the nervous system and its mRNA is localized exclusively to nerve tissue where the protein is linked to the synaptosomal membrane. LSAMP is a 64- to 68-kD neuronal surface glycoprotein found in cortical and subcortical regions of the limbic system that acts as an adhesion molecule and guides the development of specific patterns of neuronal connection. The deleted region is adjacent to a “desert gene” region extending 2.099 Mb. Conclusions We discuss the effects of GAP43 and LSAMP haploinsufficiency, proposing that their deletion may be responsible for the main phenotype. Further cases with similar microdeletion are expected to be diagnosed and will help to better characterize the clinical spectrum of phenotypes associated with 3q13.31 microdeletion.
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Tassano E, Buttgereit J, Bader M, Lerone M, Divizia MT, Bocciardi R, Napoli F, Pala G, Sloan-Béna F, Gimelli S, Gimelli G. Genotype-Phenotype Correlation of 2q37 Deletions Including NPPC Gene Associated with Skeletal Malformations. PLoS One 2013; 8:e66048. [PMID: 23805197 PMCID: PMC3689787 DOI: 10.1371/journal.pone.0066048] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Accepted: 04/30/2013] [Indexed: 01/10/2023] Open
Abstract
Coordinated bone growth is controlled by numerous mechanisms which are only partially understood because of the involvement of many hormones and local regulators. The C-type Natriuretic Peptide (CNP), encoded by NPPC gene located on chromosome 2q37.1, is a molecule that regulates endochondral ossification of the cartilaginous growth plate and influences longitudinal bone growth. Two independent studies have described three patients with a Marfan-like phenotype presenting a de novo balanced translocation involving the same chromosomal region 2q37.1 and overexpression of NPPC. We report on two partially overlapping interstitial 2q37 deletions identified by array CGH. The two patients showed opposite phenotypes characterized by short stature and skeletal overgrowth, respectively. The patient with short stature presented a 2q37 deletion causing the loss of one copy of the NPPC gene and the truncation of the DIS3L2 gene with normal CNP plasma concentration. The deletion identified in the patient with a Marfan-like phenotype interrupted the DIS3L2 gene without involving the NPPC gene. In addition, a strongly elevated CNP plasma concentration was found in this patient. A possible role of NPPC as causative of the two opposite phenotypes is discussed in this study.
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Gimelli S, Cuoco C, Ronchetto P, Gimelli G, Tassano E. Interstitial deletion 14q31.1q31.3 transmitted from a mother to her daughter, both with features of hemifacial microsomia. J Appl Genet 2013; 54:361-5. [PMID: 23645319 DOI: 10.1007/s13353-013-0150-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 04/08/2013] [Accepted: 04/16/2013] [Indexed: 12/13/2022]
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Occella C, Bleidl D, Nozza P, Mascelli S, Raso A, Gimelli G, Gimelli S, Tassano E. Identification of an interstitial 18p11.32-p11.31 duplication including the EMILIN2 gene in a family with porokeratosis of Mibelli. PLoS One 2013; 8:e61311. [PMID: 23593459 PMCID: PMC3622678 DOI: 10.1371/journal.pone.0061311] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 03/07/2013] [Indexed: 12/31/2022] Open
Abstract
Porokeratosis is a rare disease of epidermal keratinization characterized by the histopathological feature of the cornoid lamella, a column of tightly fitted parakeratocytic cells, whose etiology is still unclear. Porokeratosis of Mibelli is a subtype of porokeratosis presenting a single plaque or a small number of plaques of variable size located unilaterally on limbs. It frequently appears in childhood and occurs with a higher incidence in males. Cytogenetic analyses were performed in all members of the family on lesioned and uninvolved skin. An array-CGH analysis was also performed utilizing the Human Genome CGH Microarray Kit G3 400 with 5.3 KB overall median probe spacing. Gene expression was performed on skin fibroblasts. In this study, we describe a Caucasian healthy 4-year-old child and his father showing features of porokeratosis of Mibelli. Array-CGH analysis revealed an interstitial 429.5 Kb duplication of chromosome 18p11.32-p11.3 containing four genes, namely: SMCHD1, EMILIN2, LPIN2, and MYOM1 both in patient and his father. EMILIN2 resulted overexpressed on skin fibroblasts. Also other members of this family, without evident signs of porokeratosis, carried the same duplication. Among these genes, we focused our attention on elastin microfibril interfacer 2 (EMILIN2) gene. Apoptosis plays a fundamental role in maintaining epidermal homeostasis, balancing keratinocytes proliferation, and forming the stratum corneum. EMILIN2 is known to trigger the apoptosis of different cell lines negatively affecting cell survival. It is expressed in the skin. We could speculate that the duplication and overexpression of EMILIN2 cause an abnormal apoptosis of epidermal keratinocytes and alter the process of keratinization, even if other epigenetic and genetic factors could also be involved. Our results could contribute to a better understanding of the pathogenesis of porokeratosis of Mibelli.
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Tassano E, Di Rocco M, Signa S, Gimelli G. De novo 13q31.1-q32.1 interstitial deletion encompassing the miR-17-92 cluster in a patient with Feingold syndrome-2. Am J Med Genet A 2013; 161A:894-6. [PMID: 23495052 DOI: 10.1002/ajmg.a.35781] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 10/24/2012] [Indexed: 11/08/2022]
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Capra V, Mirabelli-Badenier M, Stagnaro M, Rossi A, Tassano E, Gimelli S, Gimelli G. Identification of a rare 17p13.3 duplication including the BHLHA9 and YWHAE genes in a family with developmental delay and behavioural problems. BMC MEDICAL GENETICS 2012; 13:93. [PMID: 23035971 PMCID: PMC3495055 DOI: 10.1186/1471-2350-13-93] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Accepted: 10/01/2012] [Indexed: 11/10/2022]
Abstract
BACKGROUND Deletions and duplications of the PAFAH1B1 and YWHAE genes in 17p13.3 are associated with different clinical phenotypes. In particular, deletion of PAFAH1B1 causes isolated lissencephaly while deletions involving both PAFAH1B1 and YWHAE cause Miller-Dieker syndrome. Isolated duplications of PAFAH1B1 have been associated with mild developmental delay and hypotonia, while isolated duplications of YWHAE have been associated with autism. In particular, different dysmorphic features associated with PAFAH1B1 or YWHAE duplication have suggested the need to classify the patient clinical features in two groups according to which gene is involved in the chromosomal duplication. METHODS We analyze the proband and his family by classical cytogenetic and array-CGH analyses. The putative rearrangement was confirmed by fluorescence in situ hybridization. RESULTS We have identified a family segregating a 17p13.3 duplication extending 329.5 kilobases by FISH and array-CGH involving the YWHAE gene, but not PAFAH1B1, affected by a mild dysmorphic phenotype with associated autism and mental retardation. We propose that BHLHA9, YWHAE, and CRK genes contribute to the phenotype of our patient. The small chromosomal duplication was inherited from his mother who was affected by a bipolar and borderline disorder and was alcohol addicted. CONCLUSIONS We report an additional familial case of small 17p13.3 chromosomal duplication including only BHLHA9, YWHAE, and CRK genes. Our observation and further cases with similar microduplications are expected to be diagnosed, and will help better characterise the clinical spectrum of phenotypes associated with 17p13.3 microduplications.
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Tassano E, Alpigiani MG, Salvati P, Gimelli S, Lorini R, Gimelli G. Molecular cytogenetic characterization of the first reported case of an inv dup (4p)(p15.1-pter) with a concomitant 4q35.1-qter deletion and normal parents. Gene 2012; 511:338-40. [PMID: 23031810 DOI: 10.1016/j.gene.2012.09.083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 07/30/2012] [Accepted: 09/12/2012] [Indexed: 12/01/2022]
Abstract
Inverted duplications associated with terminal deletions are complex anomalies described in an increasing of chromosome ends. We report on the cytogenetic characterization of the first de novo inv dup del(4) with partial 4p duplication and 4q deletion in a girl with clinical signs consistent with "recombinant 4 syndrome". This abnormality was suspected by banding, but high-resolution molecular cytogenetic investigations allowed us to define the breakpoints of the rearrangement. The terminal duplicated region extending from 4p15.1 to the telomere was estimated to be 29.27 Mb, while the size of the terminal deletion was 3.114 Mb in the 4q35.1 region. Until now, 10 patients with duplicated 4p14-p15 and deleted 4q35 chromosome 4 have been described. In all cases the abnormal chromosome 4 was derived from a pericentric inversion inherited from one of the parents. In conclusion, we have identified the first case of inv dup del(4) with normal parents suggesting that, often, terminal duplications or terminal deletions mask complex rearrangements.
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Tassano E, Tavella E, Valli R, Micalizzi C, Cuoco C, Maserati E, Pasquali F, Morerio C. New recurrent chromosome change in pediatric therapy-related myelodysplastic syndrome: unbalanced translocation 1/6 with cryptic duplication of short arm of chromosome 6. Leuk Lymphoma 2012; 53:2434-8. [PMID: 22616618 DOI: 10.3109/10428194.2012.695778] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The incidence of therapy-related myelodysplastic syndrome (t-MDS) in pediatric patients is increasing in parallel with the more successful management of the primary tumor, but scant information is available on clinical and cytogenetic characteristics. We report here two children affected by t-MDS after chemo/radiotherapy for a primary solid tumor, both with an unbalanced translocation 1/6 in their bone marrow. Characterization by array comparative genomic hybridization of the imbalances showed an almost identical pattern: almost complete trisomy of the long arm of chromosome 1, and a terminal deletion and interstitial duplication of the short arm of chromosome 6. The gain of chromosome 6 short arm encompasses regions already highlighted as possibly relevant for t-MDS in adults, and we suggest that the unbalanced translocation reported here be considered a new recurrent, non-random chromosomal abnormality in pediatric patients with t-MDS.
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Tassano E, Tavella E, Micalizzi C, Scuderi F, Cuoco C, Morerio C. Monosomal complex karyotype in pediatric mixed phenotype acute leukemia. Cancer Genet 2011; 204:507-11. [DOI: 10.1016/j.cancergen.2011.08.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 07/21/2011] [Accepted: 08/16/2011] [Indexed: 10/16/2022]
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Tassano E, Sementa AR, Tavella E, Garaventa A, Panarello C, Morerio C. Trisomy 17 in congenital plexiform (multinodular) cellular schwannoma. ACTA ACUST UNITED AC 2011; 203:313-5. [PMID: 21156251 DOI: 10.1016/j.cancergencyto.2010.08.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2010] [Revised: 07/23/2010] [Accepted: 08/01/2010] [Indexed: 11/19/2022]
Abstract
Plexiform (multinodular) cellular schwannomas are rare tumors, not associated with neurofibromatosis type 1, that occur more often in children and can be congenital. Their biology is benign and is characterized by the tendency to recur locally without being metastatic. Cytogenetic studies in adult cases of schwannoma indicate a complete or partial loss of chromosome 22 as the most common abnormality. Only two cytogenetic studies describe cases in children, one of which concerned a congenital cellular plexiform schwannoma. Here, we report the cytogenetic analysis of a second case in an 8-month-old boy with recurrence of trisomy 17.
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Tassano E, Nozza P, Tavella E, Garaventa A, Panarello C, Morerio C. Cytogenetic characterization of a fibrous hamartoma of infancy with complex translocations. ACTA ACUST UNITED AC 2010; 201:66-9. [DOI: 10.1016/j.cancergencyto.2010.05.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Revised: 05/05/2010] [Accepted: 05/12/2010] [Indexed: 10/19/2022]
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Tassano E, Tavella E, Micalizzi C, Panarello C, Morerio C. Refractory cytopenia of childhood with monosomy 7 presenting as isolated neutropenia in a patient with fragile site at 16q22. ACTA ACUST UNITED AC 2010; 201:70-1. [PMID: 20633774 DOI: 10.1016/j.cancergencyto.2010.04.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2010] [Revised: 04/19/2010] [Accepted: 04/21/2010] [Indexed: 11/18/2022]
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Tassano E, Acquila M, Tavella E, Micalizzi C, Panarello C, Morerio C. MicroRNA-125b-1 and BLID upregulation resulting from a novel IGH translocation in childhood B-Cell precursor acute lymphoblastic leukemia. Genes Chromosomes Cancer 2010; 49:682-7. [DOI: 10.1002/gcc.20776] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Morerio C, Nozza P, Tassano E, Rosanda C, Granata C, Conte M, Panarello C. Differential diagnosis of lipoma-like lipoblastoma. Pediatr Blood Cancer 2009; 52:132-4. [PMID: 18798558 DOI: 10.1002/pbc.21747] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Lipoblastomas are rare benign tumors of white fatty tissue that occur primarily in young children. Occasionally, heterogeneity of morphological appearance and histological overlap with other lipogenic tumors are described. In such cases fluorescence in situ hybridization (FISH) analysis of PLAG1, a gene specifically rearranged in lipoblastoma, is necessary to prevent misdiagnosis. We present a case of lipoblastoma arising in an atypical site with histological features characteristic of lipoma. The correct diagnosis was made possible on cytogenetic grounds through the identification of the characteristic PLAG1-HAS2 fusion gene, thus allowing an appropriate clinical approach.
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Maserati E, Panarello C, Morerio C, Valli R, Pressato B, Patitucci F, Tassano E, Di Cesare-Merlone A, Cugno C, Balduini CL, Lo Curto F, Dufour C, Locatelli F, Pasquali F. Clonal chromosome anomalies and propensity to myeloid malignancies in congenital amegakaryocytic thrombocytopenia (OMIM 604498). Haematologica 2008; 93:1271-3. [PMID: 18519517 DOI: 10.3324/haematol.12748] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Morerio C, Acquila M, Rapella A, Tassano E, Rosanda C, Panarello C. Inversion (11)(p15q22) with NUP98–DDX10 fusion gene in pediatric acute myeloid leukemia. ACTA ACUST UNITED AC 2006; 171:122-5. [PMID: 17116492 DOI: 10.1016/j.cancergencyto.2006.07.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2006] [Revised: 06/30/2006] [Accepted: 07/03/2006] [Indexed: 02/07/2023]
Abstract
The inv(11)(p15q22), a rare but recurrent chromosome abnormality that creates a NUP98-DDX10 fusion gene, is associated with de novo or secondary myeloid malignancies. We report a case of acute monocytic leukemia presenting this rearrangement, studied using fluorescence in situ hybridization (FISH) and reverse transcriptase-PCR (RT-PCR). We also review the cases of inv(11) associated with NUP98-DDX10 reported in the literature.
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