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1.
Genes (Basel) ; 15(4)2024 Apr 07.
Artigo em Inglês | MEDLINE | ID: mdl-38674397

RESUMO

The mosaic form of Edwards syndrome affects 5% of all children with Edwards syndrome. The clinical phenotype is highly variable, ranging from the full spectrum of trisomy 18 to the normal phenotype. The purpose of this publication was to present the therapeutic process in an 18-month-old girl with the mosaic form of Edwards syndrome and hepatoblastoma, against the background of other cases of simultaneous occurrence of this syndrome and hepatoblastoma described so far. It appears that this particular group of patients with hepatoblastoma and Edwards syndrome can have good outcomes, provided they do not have life-threatening cardiac or other severe defects. Due to the prematurity of our patient and the defects associated with Edwards syndrome, the child required constant multidisciplinary care, but Edwards syndrome itself was not a reason to discontinue therapy for a malignant neoplasm of the liver. Regular abdominal ultrasound examination, along with AFP testing, may be helpful in the early detection of liver tumors in children with Edwards syndrome.


Assuntos
Hepatoblastoma , Neoplasias Hepáticas , Síndrome da Trissomía do Cromossomo 18 , Humanos , Hepatoblastoma/genética , Hepatoblastoma/terapia , Feminino , Lactente , Neoplasias Hepáticas/genética , Neoplasias Hepáticas/patologia , Síndrome da Trissomía do Cromossomo 18/genética , Síndrome da Trissomía do Cromossomo 18/complicações , Mosaicismo , Trissomia/genética , Resultado do Tratamento , Cromossomos Humanos Par 18/genética
2.
Mol Genet Genomics ; 299(1): 40, 2024 Mar 28.
Artigo em Inglês | MEDLINE | ID: mdl-38546894

RESUMO

Genomic imprinting is an epigenetic regulation mechanism in mammals resulting in the parentally dependent monoallelic expression of genes. Imprinting disorders in humans are associated with several congenital syndromes and cancers and remain the focus of many medical studies. Cattle is a better model organism for investigating human embryo development than mice. Imprinted genes usually cluster on chromosomes and are regulated by different methylation regions (DMRs) located in imprinting control regions that control gene expression in cis. There is an imprinted locus on human chromosome 16q24.1 associated with congenital lethal developmental lung disease in newborns. However, genomic imprinting on bovine chromosome 18, which is homologous with human chromosome 16 has not been systematically studied. The aim of this study was to analyze the allelic expressions of eight genes (CDH13, ATP2C2, TLDC1, COTL1, CRISPLD2, ZDHHC7, KIAA0513, and GSE1) on bovine chromosome 18 and to search the DMRs associated gene allelic expression. Three transcript variants of the ZDHHC7 gene (X1, X2, and X5) showed maternal imprinting in bovine placentas. In addition, the monoallelic expression of X2 and X5 was tissue-specific. Five transcripts of the KIAA0513 gene showed tissue- and isoform-specific monoallelic expression. The CDH13, ATP2C2, and TLDC1 genes exhibited tissue-specific imprinting, however, COTL1, CRISLPLD2, and GSE1 escaped imprinting. Four DMRs, established after fertilization, were found in this region. Two DMRs were located between the ZDHHC7 and KIAA0513 genes, and two were in exon 1 of the CDH13 and ATP2C2 genes, respectively. The results from this study support future studies on the molecular mechanism to regulate the imprinting of candidate genes on bovine chromosome 18.


Assuntos
Metilação de DNA , Epigênese Genética , Recém-Nascido , Gravidez , Feminino , Humanos , Bovinos/genética , Animais , Camundongos , Metilação de DNA/genética , Cromossomos Humanos Par 18 , Impressão Genômica/genética , Cromossomos , Mamíferos/genética , Proteínas do Tecido Nervoso/genética
4.
J Pediatr ; 268: 113955, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38340889

RESUMO

OBJECTIVE: To assess rates of cardiac surgery and the clinical and demographic features that influence surgical vs nonsurgical treatment of congenital heart disease (CHD) in patients with trisomy 13 (T13) and trisomy 18 (T18) in the United States. STUDY DESIGN: A retrospective study was performed using the Pediatric Health Information System. All hospital admissions of children (<18 years of age) with T13 and T18 in the United States were identified from 2003 through 2022. International Classifications of Disease (ICD) codes were used to identify presence of CHD, extracardiac comorbidities/malformations, and performance of cardiac surgery. RESULTS: Seven thousand one hundred thirteen patients were identified. CHD was present in 62% (1625/2610) of patients with T13 and 73% (3288/4503) of patients with T18. The most common CHD morphologies were isolated atrial/ventricular septal defects (T13 40%, T18 42%) and aortic hypoplasia/coarctation (T13 21%, T18 23%). Single-ventricle morphologies comprised 6% (100/1625) of the T13 and 5% (167/3288) of the T18 CHD cohorts. Surgery was performed in 12% of patients with T13 plus CHD and 17% of patients with T18 plus CHD. For all cardiac diagnoses, <50% of patients received surgery. Nonsurgical patients were more likely to be born prematurely (P < .05 for T13 and T18). The number of extracardiac comorbidities was similar between surgical/nonsurgical patients with T13 (median 2 vs 2, P = .215) and greater in surgical vs nonsurgical patients with T18 (median 3 vs 2, P < .001). Hospital mortality was <10% for both surgical cohorts. CONCLUSIONS: Patients with T13 or T18 and CHD receive surgical palliation, but at a low prevalence (≤17%) nationally. Given operative mortality <10%, opportunity exists perhaps for quality improvement in the performance of cardiac surgery for these vulnerable patient populations.


Assuntos
Procedimentos Cirúrgicos Cardíacos , Cardiopatias Congênitas , Síndrome da Trissomia do Cromossomo 13 , Síndrome da Trissomía do Cromossomo 18 , Humanos , Estudos Retrospectivos , Estados Unidos/epidemiologia , Feminino , Masculino , Cardiopatias Congênitas/cirurgia , Cardiopatias Congênitas/epidemiologia , Procedimentos Cirúrgicos Cardíacos/métodos , Síndrome da Trissomía do Cromossomo 18/cirurgia , Lactente , Pré-Escolar , Recém-Nascido , Criança , Adolescente , Hospitalização/estatística & dados numéricos , Cromossomos Humanos Par 18 , Trissomia , Transtornos Cromossômicos/epidemiologia
5.
Neuroendocrinology ; 113(9): 915-923, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36907174

RESUMO

INTRODUCTION: Small intestinal neuroendocrine tumours (siNETs) are rare neoplasms which present with low mutational burden and can be subtyped based on copy number variation (CNV). Currently, siNETs can be molecularly classified as having chromosome 18 loss of heterozygosity (18LOH), multiple CNVs (MultiCNV), or no CNVs. 18LOH tumours have better progression-free survival when compared to MultiCNV and NoCNV tumours, however, the mechanism underlying this is unknown, and clinical practice does not currently consider CNV status. METHODS: Here, we use genome-wide tumour DNA methylation (n = 54) and gene expression (n = 20 matched to DNA methylation) to better understand how gene regulation varies by 18LOH status. We then use multiple cell deconvolution methods to analyse how cell composition varies between 18LOH status and determine potential associations with progression-free survival. RESULTS: We identified 27,464 differentially methylated CpG sites and 12 differentially expressed genes between 18LOH and non-18LOH (MultiCNV + NoCNV) siNETs. Although few differentially expressed genes were identified, these genes were highly enriched with the differentially methylated CpG sites compared to the rest of the genome. We identified differences in tumour microenvironment between 18LOH and non-18LOH tumours, including CD14+ infiltration in a subset of non-18LOH tumours which had the poorest clinical outcomes. CONCLUSIONS: We identify a small number of genes which appear to be linked to the 18LOH status of siNETs, and find evidence of potential epigenetic dysregulation of these genes. We also find a potential prognostic marker for worse progression-free outcomes in the form of higher CD14 infiltration in non-18LOH siNETs.


Assuntos
Neoplasias Intestinais , Tumores Neuroendócrinos , Humanos , Tumores Neuroendócrinos/genética , Tumores Neuroendócrinos/patologia , Multiômica , Variações do Número de Cópias de DNA/genética , Cromossomos Humanos Par 18 , Neoplasias Intestinais/genética , Metilação de DNA/genética , Perda de Heterozigosidade/genética , Microambiente Tumoral
6.
BMC Med Genomics ; 15(1): 199, 2022 09 19.
Artigo em Inglês | MEDLINE | ID: mdl-36123715

RESUMO

OBJECTIVE: To analyze the genotypes and phenotypes of a child with developmental dysplasia of the hip (DDH), developmental delays, recurrent fever, hypothyroidism and cleft palate. METHODS: G-banding karyotyping analysis and next-generation sequencing (NGS) were performed for the patient. The genotypes of the parents of the patient were verified by copy number variation analysis and Sanger sequencing to determine the source of variations. RESULTS: The karyotype of the patient was 46, XX. A 10.44 Mb deletion (chr18:67562936-78005270del) at 18q22.2q23 was found by NGS. We identified 2 HSPG2 mutations (chr1: 22206699, c.2244C > A, exon 17, p.H748Q; chr1: 22157321-22157321, c.11671 + 154insA, intron). One mutation was inherited from the father, and the other was inherited from the mother. CONCLUSION: This is the first 18q deletion syndrome case accompanied by DDH. Most phenotypes of this patient, such as developmental delays and cleft palate, may be related to the 18q22.2q23 deletion, but no variants in genes related to DDH were found in this deletion region. DDH may be related to mutations of HSPG2.


Assuntos
Transtornos Cromossômicos , Fissura Palatina , Displasia do Desenvolvimento do Quadril , Deleção Cromossômica , Cromossomos Humanos Par 18 , Variações do Número de Cópias de DNA , Humanos
7.
Epileptic Disord ; 24(3): 577-582, 2022 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-35770758

RESUMO

We report the association, not previously described, between trisomy 20/ monosomy 18 and congenital bilateral perisylvian syndrome (CBPS), a condition featuring intellectual disability, epilepsy, oro-motor dysfunction and bilateral perisylvian polymicrogyria (BPP) in a 29-year-old individual. Detailed clinical evaluation, long-term EEG and EEG analysis by means of electrical source imaging (ESI), 3T MRI and array-CGH were performed. Clinical examination showed moderate/severe intellectual disability, dysmorphic features, oro-motor dysfunction, short stature, abnormal hands and feet, bradykinesia and abnormal posture. The patient had suffered from drug-resistant epilepsy since infancy. Brain MRI showed that BPP was consistent with CBPS. Additional imaging features revealed corpus callosum and cerebellar hypoplasia and fusion of the C1-C2 vertebrae. Ictal EEG and ESI documented tonic seizures originating from the right polymicrogyric cortex. Facial gestalt included dysmorphic features reported in patients with 18- and 20+ chromosomal rearrangements. Array-CGH showed an unbalanced translocation, arr(18p)x1(20p)x3. In conclusion, we provide a detailed electro-clinical and MRI description of a novel condition characterized by the association between trisomy 20p/monosomy 18p and CBPS, also illustrating its clinical evolution into adulthood. This information may help paediatricians, neurologists and geneticists to better counsel families about the developmental prognosis of this rare unbalanced chromosomal rearrangement.


Assuntos
Anormalidades Múltiplas , Transtornos Cromossômicos , Epilepsia , Deficiência Intelectual , Malformações do Desenvolvimento Cortical , Anormalidades Múltiplas/diagnóstico , Anormalidades Múltiplas/genética , Adulto , Deleção Cromossômica , Cromossomos Humanos Par 18 , Cromossomos Humanos Par 20 , Epilepsia/diagnóstico , Humanos , Deficiência Intelectual/diagnóstico , Deficiência Intelectual/genética , Malformações do Desenvolvimento Cortical/diagnóstico , Malformações do Desenvolvimento Cortical/genética , Monossomia , Trissomia
8.
Am J Case Rep ; 23: e936142, 2022 Jun 24.
Artigo em Inglês | MEDLINE | ID: mdl-35746851

RESUMO

BACKGROUND Long arm (q) deletion syndrome of chromosome 18 is a congenital chromosomal disorder. The specialist dental management of patients with 18q deletion is a challenge, as these individuals fall into the category of patients with special needs. The aim of this work was to describe the surgical and dental management in hospital of a patient with long arm deletion syndrome of chromosome 18 (18q). CASE REPORT An 8-year-old patient with deletion syndrome of chromosome 18 (18q) was referred to the Department of Dentistry and Oral Surgery. The patient presented dental pain and difficult feeding. The examination of the oral cavity revealed a destructive carious lesion of the lower right second deciduous molar and the need to perform a frenectomy due to the short lingual frenulum, which limited the movements of the tongue. Given the complex management of the patient, it was necessary to carry out surgical procedures in the operating room. Frenectomies of the lower labial and lingual frenulum were carried out with the aid of an electric scalpel with an ultra-sharp microdissection needle. At 2-month follow-up, the patient presented with good extraction site healing and satisfactory lingual mobility, along with improvements of speech and feeding. CONCLUSIONS Dental involvement in patients with deletion syndrome of the long arm of chromosome 18 is poorly documented in the literature. The hospital regimen appears to be the criterion standard for the management of the patient with long arm deletion syndrome of chromosome 18.


Assuntos
Transtornos Cromossômicos , Doenças da Língua , Criança , Deleção Cromossômica , Transtornos Cromossômicos/diagnóstico , Transtornos Cromossômicos/genética , Cromossomos Humanos Par 18/genética , Humanos , Síndrome
9.
Mol Biol Rep ; 49(2): 1085-1088, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34775554

RESUMO

BACKGROUND: Ring Chromosome 18 is a rare chromosomal disorder caused by missing pieces of one or both ends of chromosome 18. The clinical phenotype of the Ring 18 syndrome depended on the rate and the locality of genetic material lost. Here, we report a 27 years old girl with symptoms including microcephaly, mental and motor retardation, hypotonia, and autoimmune diseases consist of Rheumatoid arthritis, Systemic Lupus Erythematosus, and Crohn's disease. This research contributes to a better understanding of disease and can lead to improvement in diagnosis and treatment. METHOD AND RESULT: The Chromosomal analysis was performed based on the GTG banding technique on peripheral blood lymphocytes. Karyotype analysis indicated the existence of a Ring chromosome 18 with deletions at 18p11.32 and18q22-2. Following that, the parental karyotype of the affected girl confirmed that Ring 18 was caused by a de novo mistake very early in embryonic development. CONCLUSION: Ring chromosome 18 is a rare chromosomal disorder that is generally caused by de novo errors very early in the development of the embryo. Previously studies have reported a relationship between autoimmune diseases and Ring 18. Our patient has disclosed specific types of autoimmune diseases, including Systemic Lupus Erythematosus, and Crohn's disease.


Assuntos
Doença de Crohn/genética , Lúpus Eritematoso Sistêmico/genética , Adulto , Doenças Autoimunes , Transtornos Cromossômicos/genética , Cromossomos Humanos Par 18/genética , Doença de Crohn/complicações , Feminino , Humanos , Cariotipagem , Lúpus Eritematoso Sistêmico/complicações , Microcefalia , Fenótipo , Cromossomos em Anel
10.
Arch. argent. pediatr ; 119(6): e636-e638, dic. 2021. ilus
Artigo em Espanhol | LILACS, BINACIS | ID: biblio-1353058

RESUMO

El uleritema ofriógenes es un trastorno cutáneo benigno y poco frecuente que se presenta habitualmente en la infancia. Se caracteriza por pápulas foliculares eritematosas y queratósicas en el lateral de las cejas, que con el tiempo suelen evolucionar a alopecia cicatricial. Dicha entidad puede aparecer como manifestación clínica aislada o asociada a varios síndromes congénitos (18p-, Cornelia de Lange, Noonan y Rubinstein- Taybi, entre otros). Presentamos el caso de un paciente de 13 años con síndrome 18p- que consultó por lesiones puntiformes rugosas al tacto y pérdida de pelo en ambas cejas (uleritema ofriógenes), así como por hiperqueratosis pilar en brazos. Esta tríada, conocida como síndrome de Zouboulis, ha sido poco descrita en la literatura. Se considera que el reconocimiento del uleritema ofriógenes es de crucial importancia ya que, ante su presencia, debería realizarse una anamnesis y una exploración física exhaustivas en búsqueda de otras alteraciones que pudieran orientar a la existencia de un trastorno genético subyacente.


Ulerythema ophryogenes is a benign and rare skin disorder commonly presenting in childhood. It is characterized by erythematous and keratotic follicular papules located on the side of the eyebrows, and which over time tends to evolve into scarred alopecia. This entity may appear as an isolated clinical manifestation or associated with several congenital syndromes (18p-, Cornelia de Lange, Noonan, Rubinstein-Taybi, among others). We present a 13-year-old male with 18p- syndrome who consults for rough lesions and hair loss in both eyebrows (ulerythema ophryogenes), as well as for hyperkeatosis pilaris in both arms. This triad, known as Zouboulis syndrome, has been rarely reported in the literature. We consider that the recognition of ulerythema ophryogenes is of crucial importance since, in view of its presence, comprehensive anamnesis and physical examination should be performed in search of other alterations that could guide the existence of an underlying genetic disord


Assuntos
Humanos , Masculino , Adolescente , Transtornos Cromossômicos , Doença de Darier , Anormalidades Múltiplas , Cromossomos Humanos Par 18 , Deleção Cromossômica , Sobrancelhas/anormalidades
11.
Arch Argent Pediatr ; 119(6): e636-e638, 2021 12.
Artigo em Espanhol | MEDLINE | ID: mdl-34813246

RESUMO

Ulerythema ophryogenes is a benign and rare skin disorder commonly presenting in childhood. It is characterized by erythematous and keratotic follicular papules located on the side of the eyebrows, and which over time tends to evolve into scarred alopecia. This entity may appear as an isolated clinical manifestation or associated with several congenital syndromes (18p-, Cornelia de Lange, Noonan, Rubinstein- Taybi, among others). Uleritema ofriógenes como entidad asociada al síndrome 18pen un paciente pediátrico Ulerythema ophryogenes as an entity associated with 18p- syndrome in a pediatric patient We present a 13-year-old male with 18p- syndrome who consults for rough lesions and hair loss in both eyebrows (ulerythema ophryogenes), as well as for hyperkeatosis pilaris in both arms. This triad, known as Zouboulis syndrome, has been rarely reported in the literature. We consider that the recognition of ulerythema ophryogenes is of crucial importance since, in view of its presence, comprehensive anamnesis and physical examination should be performed in search of other alterations that could guide the existence of an underlying genetic disorder.


El uleritema ofriógenes es un trastorno cutáneo benigno y poco frecuente que se presenta habitualmente en la infancia. Se caracteriza por pápulas foliculares eritematosas y queratósicas en el lateral de las cejas, que con el tiempo suelen evolucionar a alopecia cicatricial. Dicha entidad puede aparecer como manifestación clínica aislada o asociada a varios síndromes congénitos (18p-, Cornelia de Lange, Noonan y Rubinstein- Taybi, entre otros). Presentamos el caso de un paciente de 13 años con síndrome 18p- que consultó por lesiones puntiformes rugosas al tacto y pérdida de pelo en ambas cejas (uleritema ofriógenes), así como por hiperqueratosis pilar en brazos. Esta tríada, conocida como síndrome de Zouboulis, ha sido poco descrita en la literatura. Se considera que el reconocimiento del uleritema ofriógenes es de crucial importancia ya que, ante su presencia, debería realizarse una anamnesis y una exploración física exhaustivas en búsqueda de otras alteraciones que pudieran orientar a la existencia de un trastorno genético subyacente.


Assuntos
Transtornos Cromossômicos , Doença de Darier , Anormalidades Múltiplas , Adolescente , Criança , Deleção Cromossômica , Cromossomos Humanos Par 18 , Sobrancelhas/anormalidades , Humanos , Masculino
12.
Sci Rep ; 11(1): 21145, 2021 10 27.
Artigo em Inglês | MEDLINE | ID: mdl-34707142

RESUMO

Haematopoietic malignancies are frequently characterized by karyotypic abnormalities. The development of targeted drugs has been pioneered with compounds against gene products of fusion genes caused by chromosomal translocations. While polysomies are equally frequent as translocations, for many of them we are lacking therapeutic approaches aimed at synthetic lethality. Here, we report two new cell lines, named MBU-7 and MBU-8, that differ in complete trisomy of chromosome18, a partial trisomy of chromosome 7 and a tetrasomy of the p-arm of chromosome 8, but otherwise share the same mutational pattern and complex karyotype. Both cell lines are divergent clones of U-937 cells and have the morphology and immunoprofile of monocytic cells. The distinct karyotypic differences between MBU-7 and MBU-8 are associated with a difference in the specific response to nucleoside analogues. Taken together, we propose the MBU-7 and MBU-8 cell lines described here as suitable in vitro models for screening and testing vulnerabilities that are associated with the disease-relevant polysomies of chromosome 7, 8 and 18.


Assuntos
Biomarcadores Tumorais/genética , Cromossomos Humanos Par 18/genética , Cromossomos Humanos Par 7/genética , Cromossomos Humanos Par 8/genética , Leucemia Mieloide Aguda/genética , Linhagem Celular Tumoral , Humanos , Leucemia Mieloide Aguda/patologia , Tetrassomia , Trissomia
13.
Probl Endokrinol (Mosk) ; 67(4): 57-67, 2021 07 13.
Artigo em Russo | MEDLINE | ID: mdl-34533014

RESUMO

Congenital hypopituitarism is a rare disease. It can be caused by isolated inborn defects of the pituitary, gene mutations (PROP1, PIT1), and chromosomal abnormalities.Deletions of chromosome 18 (De Grouchy syndrome types 1 and 2) are a group of rare genetic diseases with a frequency of 1:50,000. Hypopituitarism in these syndromes is detected in from 13 to 56% of cases and depends on the size and location of the deleted segment.We have described a series of clinical cases of patients with congenital hypopituitarism due to deletions in chromosome 18. All children had a characteristic dysmorphic features and delayed mental and speech development. Within first months of life, patients developed muscular hypotension, dysphagia, and respiratory disorders. The patients had various congenital malformations in combination with hypopituitarism (isolated growth hormone deficiency and multiple pituitaryhormone deficiencies). In the neonatal period, there were the presence of hypoglycemia in combination with cholestasis.Hormone replacement therapy led to rapid relief of symptoms.Сhromosomal microarray analysis in 2 patients allowed us to identify exact location of deleted area and deleted genes and optimize further management for them.


Assuntos
Cromossomos Humanos Par 18 , Hipopituitarismo , Criança , Cromossomos Humanos Par 18/genética , Terapia de Reposição Hormonal , Humanos , Hipopituitarismo/genética , Recém-Nascido , Monossomia/genética , Hipófise
14.
Int J Mol Sci ; 22(11)2021 May 26.
Artigo em Inglês | MEDLINE | ID: mdl-34073228

RESUMO

The presence of thousands of repetitive sequences makes the centromere a fragile region subject to breakage. In this study we collected 31 cases of rearrangements of chromosome 18, of which 16 involved an acrocentric chromosome, during genetic screening done in three centers. We noticed a significant enrichment of reciprocal translocations between the centromere of chromosome 18 and the centromeric or pericentromeric regions of the acrocentrics. We describe five cases with translocation between chromosome 18 and an acrocentric chromosome, and one case involving the common telomere regions of chromosomes 18p and 22p. In addition, we bring evidence to support the hypothesis that chromosome 18 preferentially recombines with acrocentrics: (i) the presence on 18p11.21 of segmental duplications highly homologous to acrocentrics, that can justify a NAHR mechanism; (ii) the observation by 2D-FISH of the behavior of the centromeric regions of 18 respect to the centromeric regions of acrocentrics in the nuclei of normal subjects; (iii) the contact analysis among these regions on published Hi-C data from the human lymphoblastoid cell line (GM12878).


Assuntos
Cromossomos Humanos Par 18/genética , Translocação Genética , Adulto , Linhagem Celular Tumoral , Feminino , Humanos , Lactente , Masculino , Gravidez
15.
Br J Haematol ; 195(1): 15-24, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-33704790

RESUMO

Grade 3B follicular lymphoma (G3B FL) is rare, accounting for only 5-10% of FLs. Not only has it been routinely excluded from clinical trials, but data published on diagnosis, outcomes, choice of therapies and role of imaging are conflicting. With the advent of increasingly diverse treatment options for low-grade (G1-3A) FL, and the molecular subcategorisation of high-grade B-cell lymphomas, characterisation and treatment of G3B FL is ever more important as extrapolation of data becomes more difficult. New data have emerged exploring unique genetic characteristics, specific features on positron emission tomography imaging, choice of therapy, and outcomes of G3B FL in the current era. The present review will summarise and appraise these new data, and offer recommendations based on current evidence.


Assuntos
Linfoma Folicular/patologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Biomarcadores Tumorais/análise , Aberrações Cromossômicas , Cromossomos Humanos Par 14/ultraestrutura , Cromossomos Humanos Par 18/ultraestrutura , Feminino , Regulação Neoplásica da Expressão Gênica , Heterogeneidade Genética , Centro Germinativo/patologia , Humanos , Linfoma Folicular/química , Linfoma Folicular/diagnóstico por imagem , Linfoma Folicular/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Gradação de Tumores , Patologia Molecular , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Prognóstico , Biossíntese de Proteínas , Rituximab/uso terapêutico , Adulto Jovem
16.
Am J Med Genet A ; 185(4): 1294-1303, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33527722

RESUMO

Trisomy 18 is the second most common aneuploidy syndromes in live born infants. It is associated with high mortality rates, estimated to be 75%-95% in the first year of life, as well as significant morbidity in survivors. The low survival is largely due to the high prevalence of severe congenital anomalies in infants with this diagnosis. However, interventions to repair or palliate those life-threatening anomalies are being performed at a higher rate for these infants, resulting in increased rates of survival beyond the first year of life. While it is well documented that trisomy 18 is associated with several cardiac malformations, these patients also have respiratory, neurological, neoplastic, genitourinary, abdominal, otolaryngologic, and orthopedic complications that can impact their quality of life. The goal of this review is to present a comprehensive description of complications in children with trisomy 18 to aid in the development of monitoring and treatment guidelines for the increasing number of providers who will be caring for these patients throughout their lives. Where the evidence is available, this review presents screening recommendations to allow for more rapid detection and documentation of these complications.


Assuntos
Cardiopatias Congênitas/genética , Diagnóstico Pré-Natal , Síndrome da Trissomía do Cromossomo 18/genética , Aneuploidia , Criança , Cromossomos Humanos Par 18/genética , Feminino , Cardiopatias Congênitas/diagnóstico , Cardiopatias Congênitas/patologia , Humanos , Lactente , Recém-Nascido , Masculino , Qualidade de Vida , Síndrome da Trissomía do Cromossomo 18/diagnóstico , Síndrome da Trissomía do Cromossomo 18/patologia
17.
J Cutan Pathol ; 48(2): 263-268, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32996614

RESUMO

BACKGROUND AND AIMS: Synovial sarcoma (SS) is a spindled cell sarcoma demonstrating varying degrees of epithelial differentiation and characterized by a pathognomonic t(X;18) translocation. SS most frequently involves deep soft tissue of the extremities in young adults. Superficial SS involving dermis and/or subcutaneous tissue is exceedingly rare. METHODS AND RESULTS: We identified eight cases of primary superficial synovial sarcomas across three tertiary institutions. All cases were confined to the dermis/subcutis based on imaging or gross and microscopic examination. The average patient age was 36 years (range 14-50). The average tumor size was 2.4 cm (range 0.9-3.9 cm) and lesions showed classic monophasic (n = 4) or biphasic (n = 4) morphology. All tumors expressed keratin AE1/AE3 and/or epithelial membrane antigen (EMA), but were negative for CD34. The diagnosis for each case was confirmed by molecular detection of t(X;18). Six of the eight cases were treated with curative excision while the other two received additional radiotherapy. Follow-up was available for six patients (mean 68 months, range 2-108 months) and no patient experienced recurrence or metastatic disease. CONCLUSIONS: We present the largest series to date of primary superficial SS with molecular confirmation for all cases. SS should be considered when evaluating a cutaneous monomorphic spindle cell neoplasm.


Assuntos
Biomarcadores Tumorais , Cromossomos Humanos Par 18 , Cromossomos Humanos X , Proteínas de Neoplasias , Sarcoma Sinovial , Neoplasias Cutâneas , Translocação Genética , Adolescente , Adulto , Biomarcadores Tumorais/biossíntese , Biomarcadores Tumorais/genética , Cromossomos Humanos Par 18/genética , Cromossomos Humanos Par 18/metabolismo , Cromossomos Humanos X/genética , Cromossomos Humanos X/metabolismo , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Proteínas de Neoplasias/biossíntese , Proteínas de Neoplasias/genética , Sarcoma Sinovial/genética , Sarcoma Sinovial/metabolismo , Sarcoma Sinovial/patologia , Sarcoma Sinovial/radioterapia , Neoplasias Cutâneas/genética , Neoplasias Cutâneas/metabolismo , Neoplasias Cutâneas/patologia , Neoplasias Cutâneas/radioterapia
18.
J Matern Fetal Neonatal Med ; 34(6): 889-897, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31113245

RESUMO

OBJECTIVE: The purpose of this study was to quantify the possible additional risk of a fetus with an isolated choroid plexus cyst (ICPC) for Trisomy 21 by combining a large controlled cohort study with data from existent studies. METHODS: We searched our prenatal database between 2000 and 2014 for all singleton pregnancies between 18 + 0 and 26 + 6 gestational weeks with either an isolated choroid plexus cyst (study group) or no abnormality found in the detailed ultrasound scan (control group). We assessed all prenatal karyotyping results if invasive testing was performed and attempted to collect the postnatal outcome reports of all patients. The prevalence of Down syndrome was calculated. By using previous studies that met our inclusion criteria, a meta-analysis following the Bayesian Independent Model was created. From this meta-analysis, we computed the posterior predictive distribution of the probability (Trisomy 21 | ICPC) = P1 including posterior means, standard deviations, quantiles (2.5, 50, and 97.5%). By calculating the posterior of the difference (Δ) between the probability (Trisomy 21 | ICPC) and the probability (Trisomy 21 | Normal Ultrasound) = P2, we investigated the additional risk of an ICPC (ΔB = P1-P2). RESULTS: Overall, we detected 1220 fetuses with an isolated plexus cyst at 19-27 weeks of gestational age (GA). In our study group, the prevalence of Trisomy 21 was 2/1220 (0.16, 95% CI: 0.1-0.6%). The median of the pooled probability of Trisomy 21 given isolated PC across the studies included in the meta-analysis was 0.2% (CI: 0.1-0.4%). In the given periods (GA and time), 66,606 (74.8%) out of 89,056 investigated fetuses met the inclusion criteria and had a normal ultrasound result without any abnormality. The Δ between our study group and the control group was 0.08% (CIΔA: 0-0.5%). Including the meta-analysis, the median of the posterior distribution of Δ between P1 and P2 was 0.08% (CIΔB: 0-0.4%) (ΔB = P1-P2). CONCLUSION: The posterior distribution of Δ between P1 and P2 including the meta-analysis corresponds to showing no difference between the cases and controls (95% CIΔB: 0-0.4%). The additional risk of a fetus with an ICPC for Trisomy 21 is 97.5% likely to be lower than 0.4% (about 1/250). However, in our collective, the positive predictive value of ICPC for Down syndrome was 0.16% (about 1/625). In prenatal counseling, the additional risk should be added to the individual risk (based on maternal age, earlier screening test results, and sonographic markers) and the diagnostic options including fetal DNA and diagnostic procedures should be discussed according to the posterior individual risk.


Assuntos
Encefalopatias , Cistos , Síndrome de Down , Teorema de Bayes , Plexo Corióideo/diagnóstico por imagem , Cromossomos Humanos Par 18 , Estudos de Coortes , Cistos/diagnóstico por imagem , Cistos/epidemiologia , Síndrome de Down/diagnóstico por imagem , Feminino , Humanos , Gravidez , Medição de Risco , Trissomia , Ultrassonografia Pré-Natal
19.
Am J Med Genet A ; 185(3): 966-977, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33381915

RESUMO

Children with trisomy 13 and 18 (previously deemed "incompatible with life") are living longer, warranting a comprehensive overview of their unique comorbidities and complex care needs. This Review Article provides a summation of the recent literature, informed by the study team's Interdisciplinary Trisomy Translational Program consisting of representatives from: cardiology, cardiothoracic surgery, neonatology, otolaryngology, intensive care, neurology, social work, chaplaincy, nursing, and palliative care. Medical interventions are discussed in the context of decisional-paradigms and whole-family considerations. The communication format, educational endeavors, and lessons learned from the study team's interdisciplinary care processes are shared with recognition of the potential for replication and implementation in other care settings.


Assuntos
Cromossomos Humanos Par 18 , Cuidados Paliativos/organização & administração , Equipe de Assistência ao Paciente , Síndrome da Trissomia do Cromossomo 13 , Trissomia , Defesa da Criança e do Adolescente , Tomada de Decisão Clínica , Deficiências do Desenvolvimento/genética , Deficiências do Desenvolvimento/terapia , Nutrição Enteral , Feminino , Monitorização Fetal , Cardiopatias Congênitas/genética , Cardiopatias Congênitas/terapia , Humanos , Alimentos Infantis , Transtornos da Nutrição do Lactente/prevenção & controle , Recém-Nascido , Terapia Intensiva Neonatal/métodos , Comunicação Interdisciplinar , Expectativa de Vida , Masculino , Hipotonia Muscular/genética , Hipotonia Muscular/terapia , Neoplasias/complicações , Diagnóstico Pré-Natal , Relações Profissional-Família , Síndrome da Trissomia do Cromossomo 13/diagnóstico , Síndrome da Trissomia do Cromossomo 13/embriologia , Síndrome da Trissomia do Cromossomo 13/terapia
20.
Int J Mol Sci ; 22(1)2020 Dec 24.
Artigo em Inglês | MEDLINE | ID: mdl-33374459

RESUMO

Colorectal cancer (CRC), the third most common type of cancer, is the second leading cause of cancer-related mortality rates worldwide. Although modern research was able to shed light on the pathogenesis of CRC and provide enhanced screening strategies, the prevalence of CRC is still on the rise. Studies showed several cellular signaling pathways dysregulated in CRC, leading to the onset of malignant phenotypes. Therefore, analyzing signaling pathways involved in CRC metastasis is necessary to elucidate the underlying mechanism of CRC progression and pharmacotherapy. This review focused on target genes as well as various cellular signaling pathways including Wnt/ß-catenin, p53, TGF-ß/SMAD, NF-κB, Notch, VEGF, and JAKs/STAT3, which are associated with CRC progression and metastasis. Additionally, alternations in methylation patterns in relation with signaling pathways involved in regulating various cellular mechanisms such as cell cycle, transcription, apoptosis, and angiogenesis as well as invasion and metastasis were also reviewed. To date, understanding the genomic and epigenomic instability has identified candidate biomarkers that are validated for routine clinical use in CRC management. Nevertheless, better understanding of the onset and progression of CRC can aid in the development of early detection molecular markers and risk stratification methods to improve the clinical care of CRC patients.


Assuntos
Neoplasias Colorretais/metabolismo , Neoplasias Colorretais/patologia , Progressão da Doença , Regulação Neoplásica da Expressão Gênica , Metástase Neoplásica , Proteína da Polipose Adenomatosa do Colo/genética , Animais , Movimento Celular/fisiologia , Instabilidade Cromossômica , Cromossomos Humanos Par 18 , Colo/patologia , Ilhas de CpG , Receptores ErbB/metabolismo , Perfilação da Expressão Gênica , Humanos , Perda de Heterozigosidade , Repetições de Microssatélites , Fenótipo , Proteínas Proto-Oncogênicas B-raf/metabolismo , Proteínas Proto-Oncogênicas p21(ras)/metabolismo , Risco , Transdução de Sinais , Proteína Supressora de Tumor p53/metabolismo , Proteínas Wnt/metabolismo , Via de Sinalização Wnt/fisiologia , beta Catenina/metabolismo
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