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1.
Reprod Biomed Online ; 49(3): 104100, 2024 May 03.
Artigo em Inglês | MEDLINE | ID: mdl-39008944

RESUMO

RESEARCH QUESTION: Do women with endometriosis undergoing oocyte retrieval for fertility preservation experience the same level of pain as women undergoing oocyte retrieval for IVF? DESIGN: This retrospective cohort study included 796 cycles in women with endometriosis undergoing oocyte retrieval for fertility preservation (n = 401) or IVF (n = 395) between January 2020 and October 2022. Post-operative pain assessments were compared between the two groups using a numeric rating scale (NRS). RESULTS: Women in the fertility preservation group were younger (32.1 ± 4.2 years versus 35.1 ± 4.1 years; P < 0.001), had a lower body mass index (22.8 ± 3.9 kg/m2 versus 24.6 ± 4.4 kg/m2; P < 0.001) and had a lower concentration of anti-Müllerian hormone (1.8 ± 1.5 ng/ml versus 2.15 ± 2.11 ng/ml; P = 0.026) in comparison with women in the IVF group. The oestrogen concentration on the day of ovulation trigger was higher in women in the fertility preservation group (2188 ± 1152 pg/ml versus 2081 ± 995 pg/ml; P = 0.004), and the prevalence rates of adenomyosis and digestive endometrial lesions were lower in women in the fertility preservation group (14% versus 29%, P < 0.001; 16% versus 25%, P = 0.003, respectively) compared with women in the IVF group. After oocyte puncture, more women in the fertility preservation group had an NRS pain score >3 (moderate to severe pain) compared with women in the IVF group (20% versus 14%; P = 0.018). The progestin-primed ovarian stimulation (PPOS) protocol was identified as an independent predictive factor of greater post-operative pain (adjusted OR 2.30, 95% CI 1.06-5.15; P = 0.039). CONCLUSION: Women with endometriosis undergoing fertility preservation reported more intense post-operative pain in the recovery room than women undergoing IVF. The PPOS protocol was an independent risk factor of intense pain (NRS pain score >3) in women with endometriosis, but further studies are needed to confirm this result.

2.
J Hum Genet ; 67(11): 669-673, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-35896821

RESUMO

Developmental brain malformations are rare but are increasingly reported features of BICD2-related disorders. Here, we report a 2-year old boy with microcephaly, profound delay and partial seizures. His brain MRI showed lissencephaly, hypogenesis of corpus callosum, dysplastic hipocampus and cerebellar hypoplasia. Whole-exome sequencing identified a novel homozygous likely pathogenic variant in the BICD2 gene, c.229 C > T p.(Gln77Ter). This is the first report of lissencephaly and cerebellar hypoplasia seen in a patient with homozygous loss-of-function variant in BICD2 that recapitulated the animal model. Our report supports that BICD2 should be considered in the differential diagnosis for patients with lissencephaly and cerebellar hypoplasia Additional clinical features of BICD2 are likely to emerge with the identification of additional patients.


Assuntos
Lisencefalia , Microcefalia , Malformações do Sistema Nervoso , Animais , Criança , Malformações do Sistema Nervoso/diagnóstico por imagem , Malformações do Sistema Nervoso/genética , Lisencefalia/diagnóstico por imagem , Lisencefalia/genética , Cerebelo/patologia , Deficiências do Desenvolvimento/genética , Microcefalia/diagnóstico por imagem , Microcefalia/genética , Microcefalia/patologia
3.
Cytogenet Genome Res ; 160(3): 124-133, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32187602

RESUMO

Trisomy 14 is incompatible with live, but there are several patients reported with mosaic trisomy 14. We aimed to study the pattern of X inactivation and its effect on a translocated autosome and to find out an explanation of the involvement of chromosome 14 in 2 different structural chromosomal abnormalities. We report on a girl with frontal bossing, hypertelorism, low-set ears, micrognathia, cleft palate, congenital heart disease, and abnormal skin pigmentations. The patient displayed iris, choroidal, and retinal coloboma and agenesis of the corpus callosum and cerebellar vermis hypoplasia. Cytogenetic analysis revealed a karyotype 45,X,der(X)t(X;14)(q24;q11)[85]/46,XX,rob(14;14)(q10;q10),+14[35]. Array-CGH for blood and buccal mucosa showed high mosaic trisomy 14 and an Xq deletion. MLPA detected trisomy 14 in blood and buccal mucosa and also showed normal methylation of the imprinting center. FISH analysis confirmed the cell line with trisomy 14 (30%) and demonstrated the mosaic deletion of the Xq subtelomere in both tissues. There was 100% skewed X inactivation for the t(X;14). SNP analysis of the patient showed no region of loss of heterozygosity on chromosome 14. Also, genotype call analysis of the patient and her parents showed heterozygous alleles of chromosome 14 with no evidence of uniparental disomy. Our patient had a severe form of mosaic trisomy 14. We suggest that this cytogenetic unique finding that involved 2 cell lines with structural abnormalities of chromosome 14 occurred in an early postzygotic division. These 2 events may have happened separately or maybe there is a kind of trisomy or monosomy rescue due to dynamic cytogenetic interaction between different cell lines to compensate for gene dosage.


Assuntos
Anormalidades Múltiplas/genética , Trissomia/genética , Inativação do Cromossomo X/genética , Anormalidades Múltiplas/fisiopatologia , Pré-Escolar , Cromossomos Humanos Par 14/genética , Feminino , Humanos , Hibridização in Situ Fluorescente , Cariótipo , Cariotipagem , Mosaicismo , Fenótipo , Translocação Genética/genética , Trissomia/fisiopatologia
4.
Am J Med Genet A ; 182(6): 1407-1420, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32267100

RESUMO

PCNT encodes a large coiled- protein localizing to pericentriolar material and is associated with microcephalic osteodysplastic primordial dwarfism type II syndrome (MOPD II). We report our experience of nine new patients from seven unrelated consanguineous Egyptian families with the distinctive clinical features of MOPD II in whom a customized NGS panel showed homozygous truncating variants of PCNT. The NGS panel results were validated thereafter using Sanger sequencing revealing three previously reported and three novel PCNT pathogenic variants. The core phenotype appeared homogeneous to what had been reported before although patients differed in the severity showing inter and intra familial variability. The orodental pattern showed atrophic alveolar ridge (five patients), rootless tooth (four patients), tooth agenesis (three patients), and malformed tooth (three patients). In addition, mesiodens was a novel finding found in one patient. The novel c.9394-1G>T variant was found in two sibs who had tooth agenesis. CNS anomalies with possible vascular sequelae were documented in two male patients (22.2%). Simplified gyral pattern with poor development of the frontal horns of lateral ventricles was seen in four patients and mild thinning of the corpus callosum in two patients. Unilateral coronal craniosynstosis was noted in one patient and thick but short corpus callosum was an unusual finding noted in another. The later has not been reported before. Our results refine the clinical, neuroradiological, and orodental features and expand the molecular spectrum of MOPD II.


Assuntos
Antígenos/genética , Nanismo/epidemiologia , Nanismo/genética , Retardo do Crescimento Fetal/epidemiologia , Retardo do Crescimento Fetal/genética , Predisposição Genética para Doença , Microcefalia/epidemiologia , Microcefalia/genética , Osteocondrodisplasias/epidemiologia , Osteocondrodisplasias/genética , Adolescente , Criança , Pré-Escolar , Consanguinidade , Nanismo/complicações , Nanismo/patologia , Egito/epidemiologia , Feminino , Retardo do Crescimento Fetal/patologia , Estudos de Associação Genética , Genótipo , Humanos , Lactente , Masculino , Microcefalia/complicações , Microcefalia/patologia , Mutação , Osteocondrodisplasias/complicações , Osteocondrodisplasias/patologia , Fenótipo , Irmãos
5.
Neuropediatrics ; 51(1): 76-82, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31634935

RESUMO

We report a new patient who presented with dysmorphic features and congenital heart disease. In addition, her brain magnetic resonance imaging revealed leukoencephalopathy, cavum septum pellucidum, perisylvian polymicrogyria, and focal occipital pachygyria. Her regular karyotype showed 46,XX add 6 (p25) due to malsegregation of a maternal balanced translocation 46,XX,t(6;7)(p25;q33) while the array-comparative genomic hybridization identified a 3.307 Mb heterozygous deletion at 6p25.3-p25.2 and 23.95 Mb duplication at 7q33-q36.3. A previous patient with the same developmental brain malformations and leukoencephalopathy with 6p25 deletion including TUBB2A and TUBB2B genes had been reported. Thus, confirming that these specific developmental brain malformations are due to TUBB2A and TUBB2B haploinsufficiency. Our report is the first to present the developmental brain malformations associated with whole gene deletions of the two tubulin genes and provide further insights into the etiology of developmental brain malformations and white matter abnormalities associated with 6p25 deletions.


Assuntos
Cromossomos Humanos Par 6/genética , Deleção de Genes , Cardiopatias Congênitas/genética , Leucoencefalopatias/genética , Lisencefalia/genética , Polimicrogiria/genética , Duplicação Cromossômica/genética , Cromossomos Humanos Par 7/genética , Feminino , Humanos , Lactente
6.
Prenat Diagn ; 40(5): 565-576, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-31955448

RESUMO

OBJECTIVE: The objective of this study is to evaluate the prenatal diagnosis, postnatal characteristics, and the spectrum of associated findings in fetuses with holoprosencephaly (HPE). METHODS: Fetal neurosonograms, postnatal assessment, and chromosomal analysis were performed in a cohort of 25 fetuses with HPE. RESULTS: The prevalence of HPE in high-risk pregnancies was 4.4:10 000. The alobar subtype was the most frequently encountered, with 17 cases (68%). Interestingly, among them, four cases (16%) presented with the rare agnathia-otocephaly complex. Chromosomal abnormalities were detected in 11 cases (44%), the most frequent being trisomy 13 in seven cases (five alobar, one semilobar, and one lobar HPE), followed by trisomy 18 in two cases with semilobar HPE. One case of alobar HPE had 45, XX, t(18;22) (q10;q10), -18p karyotyping, and one case of semilobar HPE was associated with triploidy. Facial malformations in HPE spectrum ranged from cyclopia, proboscis, and arrhinia that were associated with the alobar subtype to hypotelorism and median cleft that were frequent among the semilobar and lobar subtypes. Associated neural tube defects were identified in 12% of cases. CONCLUSION: Our study illustrates the clinical and genetic heterogeneity of HPE and describes different chromosomal abnormalities associated with HPE.


Assuntos
Transtornos Cromossômicos/epidemiologia , Anormalidades Craniofaciais/epidemiologia , Hérnia Umbilical/epidemiologia , Holoprosencefalia/epidemiologia , Defeitos do Tubo Neural/epidemiologia , Aborto Induzido , Adolescente , Adulto , Transtornos Cromossômicos/diagnóstico por imagem , Cromossomos Humanos Par 18 , Cromossomos Humanos Par 22 , Consanguinidade , Anormalidades Craniofaciais/diagnóstico por imagem , Egito/epidemiologia , Encefalocele/diagnóstico por imagem , Encefalocele/epidemiologia , Feminino , Morte Fetal , Hérnia Umbilical/diagnóstico por imagem , Holoprosencefalia/diagnóstico por imagem , Humanos , Masculino , Defeitos do Tubo Neural/diagnóstico por imagem , Gravidez , Gravidez em Diabéticas/epidemiologia , Prevalência , Translocação Genética , Triploidia , Síndrome da Trissomia do Cromossomo 13/diagnóstico , Síndrome da Trissomia do Cromossomo 13/epidemiologia , Síndrome da Trissomía do Cromossomo 18/diagnóstico , Síndrome da Trissomía do Cromossomo 18/epidemiologia , Ultrassonografia Pré-Natal , Adulto Jovem
7.
Cytogenet Genome Res ; 159(3): 130-136, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31715598

RESUMO

We report on a female patient who presented with severe intellectual disability and autistic behavior, dysmorphic features, orodental anomalies, and bilateral calcification of basal ganglia. Using a high-density oligonucleotide microarray, we have identified a de novo duplication of 11q13.1q22.1 involving the dosage sensitive genes FGF3 and FGF4, genes related to autosomal dominant disorders KMT5B, GAL, SPTBN2, and LRP5, susceptibility loci SCZD2, SLEH1, and SHANK2, mitochondrial genes NDUFV1, NDUFS8, and TMEM126B, and many loss of function genes, including PHOX2A, CLPB, MED17, B3GNT1, LIPT2, and CLPB. However, the duplication did not involve Ribonuclease H2, subunit C (RNASEH2C) which is considered to be located in the critical region for Aicardi-Goutières syndrome. In combination with the duplication at 11q13.1, a 1.849-Mb heterozygous duplication at 4q35.2 was also identified. Although this duplicated region does not contain causative genes related to brain calcification, the duplication at 4q35 was reported previously in a patient with basal ganglia calcification, coats' like retinopathy, and glomerulosclerosis. Our patient's presentation and genomic findings indicate that duplication of 4q35.2 could be a novel genetic cause of calcification of basal ganglia. Our report also underscores the clinical significance of rearrangements in 11q13.1q22.1 in the pathogenesis of basal ganglia calcification.


Assuntos
Gânglios da Base/patologia , Calcinose/genética , Duplicação Cromossômica , Cromossomos Humanos Par 11 , Cromossomos Humanos Par 4 , Fenótipo , Criança , Bandeamento Cromossômico , Feminino , Humanos , Cariotipagem
8.
Am J Med Genet A ; 179(6): 1053-1057, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-30912300

RESUMO

We report two siblings with microcephaly, early infantile onset seizures, and cerebellar vermis hypoplasia, in whom whole exome sequencing revealed a novel homozygous missense (c.770T>C, p.[Leu257Pro]) variant in the hedgehog acyl-transferase gene (HHAT), encoding an enzyme required for the attachment of palmitoyl residues that are critical for multimerization and long and short range hedgehog signaling. There is a report of one family with Nivelon-Nivelon-Mabille syndrome in which HHAT was proposed as the likely candidate gene. The phenotypic overlap with the family we report herein provides further evidence implicating HHAT in cerebellar development and the pathogenesis of this rare spectrum.


Assuntos
Aciltransferases/genética , Alelos , Vermis Cerebelar/anormalidades , Microcefalia/diagnóstico , Microcefalia/genética , Mutação de Sentido Incorreto , Fenótipo , Criança , Pré-Escolar , Análise Mutacional de DNA , Fácies , Feminino , Estudos de Associação Genética , Predisposição Genética para Doença , Humanos , Recém-Nascido , Imageamento por Ressonância Magnética
9.
Am J Med Genet A ; 176(5): 1190-1194, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-29681084

RESUMO

We report two unrelated boys with frontonasal dysplasias type-2 (FND-2) who shared an identical novel homozygous ALX4 mutation c.291delG (p.Q98Sfs*83). Both patients presented with a large skull defect but one had bilateral parietal meningocele-like cysts that lie along with the bony defect and increased in size with age. Scalp alopecia, hypertelorism, and clefted alae nasi were also detected in both of them. Furthermore, impalpable gonads were noted, being unilateral in one and bilateral in the other. Neuroimaging showed small dysplastic occipital lobes with dysgyria and midline subarachnoid cyst. Additional dysplastic corpus callosum and small cerebellar vermis were observed in one patient. Parietal foramina were noted in the parents of one patient. Our findings highlight the dosage effect of ALX4 and underscore the challenges of prenatal genetic counseling. Further, the indirect role of ALX4 in the development of the occipital lobe and posterior fossa is discussed.


Assuntos
Anormalidades Craniofaciais/diagnóstico , Anormalidades Craniofaciais/genética , Proteínas de Ligação a DNA/genética , Face/anormalidades , Homozigoto , Mutação , Fenótipo , Fatores de Transcrição/genética , Encéfalo/anormalidades , Encéfalo/diagnóstico por imagem , Pré-Escolar , Análise Mutacional de DNA , Estudos de Associação Genética , Humanos , Lactente , Imageamento por Ressonância Magnética , Masculino , Reação em Cadeia da Polimerase
10.
Am J Med Genet A ; 170(10): 2662-70, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27264538

RESUMO

Coffin-Siris syndrome is a rare congenital malformation and intellectual disability syndrome. Mutations in at least seven genes have been identified. Here, we performed copy number analysis in 37 patients with features of CSS in whom no causative mutations were identified by exome sequencing. We identified a patient with a 9p24.3-p22.2 duplication and another patient with the chromosome der(6)t(6;9)(p25;p21)mat. Both patients share a duplicated 15.8-Mb region containing 46 protein coding genes, including SMARCA2. Dominant negative effects of SMARCA2 mutations may contribute to Nicolaides-Baraitser syndrome. We conclude that their features better resemble Coffin-Siris syndrome, rather than Nicolaides-Baraitser syndrome and that these features likely arise from SMARCA2 over-dosage. Pure 9p duplications (not caused by unbalanced translocations) are rare. Copy number analysis in patients with features that overlap with Coffin-Siris syndrome is recommended to further determine their genetic aspects. © 2016 Wiley Periodicals, Inc.


Assuntos
Anormalidades Múltiplas/diagnóstico , Anormalidades Múltiplas/genética , Face/anormalidades , Duplicação Gênica , Estudos de Associação Genética , Deformidades Congênitas da Mão/diagnóstico , Deformidades Congênitas da Mão/genética , Deficiência Intelectual/diagnóstico , Deficiência Intelectual/genética , Micrognatismo/diagnóstico , Micrognatismo/genética , Pescoço/anormalidades , Fenótipo , Fatores de Transcrição/genética , Alelos , Pré-Escolar , Cromossomos Humanos Par 9 , Hibridização Genômica Comparativa , Variações do Número de Cópias de DNA , Exoma , Fácies , Feminino , Haplótipos , Sequenciamento de Nucleotídeos em Larga Escala , Humanos , Hibridização in Situ Fluorescente , Lactente , Linhagem
11.
Pediatr Dermatol ; 33(2): e109-13, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26871653

RESUMO

A 13-year-old Egyptian girl with generalized hypertrichosis, gingival hyperplasia, coarse facial appearance, no cardiovascular or skeletal anomalies, keloid formation, and multiple labial frenula was referred to our clinic for counseling. Molecular analysis of the ABCC9 gene showed a de novo missense mutation located in exon 27, which has been described previously with Cantu syndrome. An overlap between Cantu syndrome, acromegaloid facial syndrome, and hypertrichosis acromegaloid facial features disorder is apparent at the phenotypic and molecular levels. The patient reported here gives further evidence that these syndromes are an expression of the ABCC9-related disorders, ranging from hypertrichosis and acromegaloid facies to the severe end of Cantu syndrome.


Assuntos
Acromegalia/genética , Cardiomegalia/genética , Hipertricose/genética , Deformidades Congênitas dos Membros/genética , Mutação de Sentido Incorreto , Osteocondrodisplasias/genética , Receptores de Sulfonilureias/genética , Adolescente , Cardiomegalia/diagnóstico , Diagnóstico Diferencial , Face/anormalidades , Fácies , Feminino , Humanos , Hipertricose/diagnóstico , Osteocondrodisplasias/diagnóstico
12.
Am J Med Genet A ; 167A(10): 2418-24, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26033841

RESUMO

Generalized hypertrichosis is a feature of several genetic disorders, and the nosology of these entities is still provisional. Recent studies have implicated chromosome 17q24.2-q24.3 microdeletion and the reciprocal microduplication in a very rare form of congenital generalized hypertrichosis terminalis (CGHT) with or without gingival hyperplasia. Here, we report on a 5-year-old Egyptian girl born to consanguineous parents. The girl presented with CGHT and gingival hyperplasia for whom we performed detailed clinical, pathological, and molecular studies. The girl had coarse facies characterized by bilateral epicanthic folds, thick and abundant eyelashes, a broad nose, full cheeks, and lips that constituted the distinctive facial features for this syndrome. Biopsy of the gingiva showed epithelial marked acanthosis and hyperkeratosis with hyperplastic thick collagen bundles and dense fibrosis in the underlying tissues. Array analysis indicated a 17q24.2-q24.3 chromosomal microdeletion. We validated this microdeletion by real-time quantitative PCR and confirmed a perfect co-segregation of the disease phenotype within the family. In summary, this study indicates that 17q24.2-q24.3 microdeletion caused CGHT with gingival hyperplasia and distinctive facies, which should be differentiated from the autosomal recessive type that lacks the distinctive facies.


Assuntos
Fácies , Fibromatose Gengival/diagnóstico , Fibromatose Gengival/genética , Hipertricose/diagnóstico , Hipertricose/genética , Sequência de Bases , Pré-Escolar , Deleção Cromossômica , Cromossomos Humanos Par 17/genética , Consanguinidade , Análise Mutacional de DNA , Feminino , Fibromatose Gengival/patologia , Genótipo , Humanos , Hipertricose/patologia , Dados de Sequência Molecular , Fenótipo
14.
J Genet Eng Biotechnol ; 21(1): 111, 2023 Nov 10.
Artigo em Inglês | MEDLINE | ID: mdl-37947911

RESUMO

BACKGROUND: The deletions of azoospermic factor regions (AZF) are considered risk factor of spermatogenic failure. AZF duplications or complex copy number variants (CNVs) were rarely studied because STS-PCR could not always detect these changes. The application of multiplex ligation-dependent probe amplification (MLPA) as a valuable test for detection of the deletion and or duplication was introduced to investigate the AZF sub-region CNVs. The MLPA technique is still not applied on a large scale, and the publications in this area of research are limited. The aim of this work was to evaluate the efficacy of MLPA assay to detect AZF-linked CNVs in idiopathic spermatogenic failure patients and to evaluate its importance as a prognostic marker in the reproduction outcome. RESULTS: Forty infertile men (37 with azoospermia and 3 with severe oligozoospermia) and 20 normal fertile men were subjected to thorough clinical, pathological, and laboratory assessment, chromosomal study, MLPA, STS-PCR assays, histopathology study, and testicular sperm retrieval (TESE). Out of the 40 patients, 7 patients have shown CNV in the AZFc region, 6 patients have partial deletion, and one patient has partial duplication. Only one of the normal control has AZFc duplication. STS-PCR was able to detect the deletion in only 4 out of the 7 positive patients and none of the control. CONCLUSION: We concluded that MLPA should be applied on a larger scale for the detection of Y chromosome microdeletion as a rapid, efficient, and cheap test.

15.
J Genet Eng Biotechnol ; 21(1): 149, 2023 Nov 29.
Artigo em Inglês | MEDLINE | ID: mdl-38017244

RESUMO

BACKGROUND: Aplastic anemia (AA) is a bone marrow disorder characterized by peripheral pancytopenia and marrow hypoplasia which can lead to life-threatening complications. Our objective was to study the telomerase genes (TERT and TERC) variants, explore their relationship to telomere shortening and TERT gene expression, and to identify variants in the MPL gene within Egyptian AA patients. METHODS: Forty AA patients and 40 sex- and age-matched healthy individuals as the control group were studied through sequencing of TERT, TERC, and MPL genes. Quantitative real-time PCR (qRT-PCR) was used for measuring TERT gene expression. Telomere length (TL) was measured using the Quantitative Fluorescence In Situ Hybridization (Q-FISH) technique. In silico analysis was performed for the prediction of the pathogenicity of resultant variants. RESULTS: Sequencing of MPL, TERT, and TERC genes identified 26 variants. Eleven variants were identified in the MPL gene. Three of them are pathogenic: two missense [c.305 G>A, c.1589 C>T] and one splice site [g.9130T>G]. TERT gene sequencing showed thirteen variants, among them, four novel [c.484G>A, c.499G>A, c.512G>A, c.3164C>G] and two previously reported [c.835G>A, c.2031C>T] were predicted to be pathogenic. Two variants were characterized within the TERC gene; n.514A>G and n.463 C>T. TERT gene expression was downregulated in 70% of studied patients and the Q-FISH technique detected telomere shortening in 82.5% of patients. CONCLUSIONS: Twenty-six pathogenic and benign variants within the TERC, TERT, and MPL genes were identified among the studied AA patients that were in several cases associated with shortened telomeres and/or lower TERT gene expression. Genotype/phenotype correlation in AA patients is of great importance in explaining the disease severity and guiding therapeutic decisions.

16.
JCI Insight ; 8(22)2023 Nov 22.
Artigo em Inglês | MEDLINE | ID: mdl-37796616

RESUMO

MAD2L1BP-encoded p31comet mediates Trip13-dependent disassembly of Mad2- and Rev7-containing complexes and, through this antagonism, promotes timely spindle assembly checkpoint (SAC) silencing, faithful chromosome segregation, insulin signaling, and homology-directed repair (HDR) of DNA double-strand breaks. We identified a homozygous MAD2L1BP nonsense variant, R253*, in 2 siblings with microcephaly, epileptic encephalopathy, and juvenile granulosa cell tumors of ovary and testis. Patient-derived cells exhibited high-grade mosaic variegated aneuploidy, slowed-down proliferation, and instability of truncated p31comet mRNA and protein. Corresponding recombinant p31comet was defective in Trip13, Mad2, and Rev7 binding and unable to support SAC silencing or HDR. Furthermore, C-terminal truncation abrogated an identified interaction of p31comet with tp53. Another homozygous truncation, R227*, detected in an early-deceased patient with low-level aneuploidy, severe epileptic encephalopathy, and frequent blood glucose elevations, likely corresponds to complete loss of function, as in Mad2l1bp-/- mice. Thus, human mutations of p31comet are linked to aneuploidy and tumor predisposition.


Assuntos
Encefalopatias , Tumor de Células da Granulosa , Neoplasias Ovarianas , Feminino , Humanos , Animais , Camundongos , Proteínas Mad2/genética , Proteínas Mad2/metabolismo , Tumor de Células da Granulosa/genética , Mutação , Aneuploidia
17.
Rev Prat ; 72(7): 747-749, 2022 Sep.
Artigo em Francês | MEDLINE | ID: mdl-36511962

RESUMO

CONSERVATIVE TREATMENTS FOR ENDOMETRIAL CANCER Treatment for early endometrial cancer remains based on hysterectomy. However, in patients of reproductive age with a pregnancy desire, conservative alternative may be considered in case of atypical hyperplasia or endometrial endometrial adenocarcinoma without myometrial invasion. The conservative treatment consists in proposing a protocol preserving the uterus, based on an antigonadotropic treatment (oral or intrauterine progestin, GnRH agonist) allowing a regression of the endometrial lesion. The pre-therapeutic assessment includes at least a review of initial histological slides, a fertility evaluation and a pelvic MRI. To check the remission and the absence of recurrence, hysteroscopy guided biopsies are performed every 3-4 months. Pregnancy is allowed after at least 3 months of treatment if the remission of lesions is proven histologically. In this circumstance, there is no contraindication to ovulation stimulation. Hysterectomy is finally indicated in case of progression of tumor lesions, non-remission of lesions at 12 months and if pregnancy project is abandoned.


TRAITEMENTS CONSERVATEURS EN CAS DE CANCER DE L'ENDOMÈTRE Le traitement du cancer de l'endomètre au stade précoce demeure fondé sur l'hystérectomie. Toutefois, chez les patientes en âge de procréer ayant un désir de grossesse, l'alternative conservatrice peut être envisagée en cas d'hyperplasie atypique ou d'un adénocarcinome endométrial de type endométrioïde sans envahissement myométrial. Le traitement conservateur consiste à proposer un protocole conservant l'utérus, fondé sur un traitement antigonadotrope (progestatif oral ou intra-utérin, agoniste de la GnRH) permettant une régression de la lésion endométriale. Le bilan préthérapeutique inclut au minimum une relecture des lames histologiques ayant fait le diagnostic de lésion endométriale, un bilan de fertilité et une IRM pelvienne. Pour vérifier la rémission et l'absence de récidive, des biopsies guidées par hystéroscopie tous les trois à quatre mois sont effectuées. La grossesse est autorisée après au moins trois mois de traitement si la rémission des lésions est prouvée histologiquement. Dans cette circonstance, il n'existe pas de contre-indication à une stimulation de l'ovulation. L'hystérectomie est finalement indiquée en cas de progression des lésions tumorales, de non-rémission des lésions à douze mois et en cas de succès ou abandon du projet de grossesse.


Assuntos
Hiperplasia Endometrial , Neoplasias do Endométrio , Preservação da Fertilidade , Gravidez , Feminino , Humanos , Hiperplasia Endometrial/tratamento farmacológico , Hiperplasia Endometrial/patologia , Tratamento Conservador , Preservação da Fertilidade/métodos , Antineoplásicos Hormonais/uso terapêutico , Neoplasias do Endométrio/tratamento farmacológico , Neoplasias do Endométrio/patologia , Estudos Retrospectivos
18.
J Genet Eng Biotechnol ; 20(1): 112, 2022 Jul 28.
Artigo em Inglês | MEDLINE | ID: mdl-35900681

RESUMO

BACKGROUND: The prenatal diagnosis of syndromes caused by chromosomal abnormality is a long-established part of obstetric care. Several DNA-based molecular approaches have provided rapid prenatal diagnosis of of cytogenomic abnormalities. MLPA has become available for rapid aneuploidy detection of the most common chromosome abnormalities. OBJECTIVES: The aim of this study is to introduce the MLPA technique as a method for the prenatal detection of aneuploidy in Egypt by its validation compared to the FISH technique. METHODS: Fifty AF samples were collected for this study and were subjected to MLPA and FISH assays to detect the most common prenatal chromosomal abnormality. RESULTS AND CONCLUSIONS: Our study confirmed previous reports that MLPA is analogous to FISH for detecting common aneuploidies and could be a quick and dependable tool for prenatal diagnosis. Therefore, initial prompt testing of AF samples for the copy number of the most common occurring aneuploidies is recommended.

19.
Am J Med Genet A ; 155A(1): 207-14, 2011 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-21204234

RESUMO

We describe a 2-year-old boy born to healthy, consanguineous parents. He had craniofacial asymmetry with left frontal bossing, midface hypoplasia, proptosis, and low-set ears. In addition, he had curly, light hair, and oval hypomelanotic patches in the abdomen, lower limbs and back and one hyperpigmented patch in the groin without acanthosis nigricans. Cranial three-dimensional CT scan showed right-coronal, sagittal, and lambdoid suture synostoses. His cranial MRI at 2-months of age showed left hemimegalencephaly, hypoplasia of corpus callosum, and an abnormal configuration of hippocampus. In spite of these cranial findings, he had mild developmental delay and his neurological examination showed symmetric strength, tone and reflexes. Apart from febrile seizures, there was no history of epilepsy. The proband developed asymmetric hydrocephalus at the age of 18 months that required third ventriculostomy. Post-operative cranial MRI showed Chiari I- like malformation and asymmetry of cerebral hemispheres but less dysplastic cerebral cortex. Mutation analysis of FGFR3 showed a c.749C > G, p.Pro250Arg substitution. To the best of our knowledge, these manifestations have not been reported in patients with Muenke syndrome.


Assuntos
Encéfalo/patologia , Malformações do Desenvolvimento Cortical/patologia , Transtornos da Pigmentação/patologia , Receptor Tipo 3 de Fator de Crescimento de Fibroblastos/genética , Pré-Escolar , Craniossinostoses/genética , Craniossinostoses/patologia , Análise Mutacional de DNA , Humanos , Imageamento por Ressonância Magnética , Masculino , Malformações do Desenvolvimento Cortical/genética , Mutação de Sentido Incorreto/genética , Transtornos da Pigmentação/genética
20.
Am J Med Genet A ; 155A(11): 2885-96, 2011 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-21990275

RESUMO

The designation microcephalic osteodysplastic primordial dwarfism (MOPD) refers to a group of autosomal recessive disorders, comprising microcephaly, growth retardation, and a skeletal dysplasia. The different types of MOPD have been delineated on the basis of clinical, radiological, and genetic criteria. We describe two brothers, born to healthy, consanguineous parents, with intrauterine and postnatal growth retardation, microcephaly with abnormal gyral pattern and partial agenesis of corpus callosum, and skeletal anomalies reminiscent of those described in MOPD type I. This was confirmed by the identification of the homozygous g.55G > A mutation of RNU4ATAC encoding U4atac snRNA. The sibs had yellowish-gray hair, fair skin, and deficient retinal pigmentation. Skin biopsy showed abnormal melanin function but OCA genes were normal. The older sib had an intracranial hemorrhage at 1 week after birth, the younger developed chilblains-like lesions at the age 2½ years old but analysis of the SAMHD1 and TREX1 genes did not show any mutations. To the best of our knowledge, vasculopathy and pigmentary disorders have not been reported in MOPD I.


Assuntos
Nanismo/genética , Retardo do Crescimento Fetal/genética , Microcefalia/genética , Mutação , Osteocondrodisplasias/genética , Transtornos da Pigmentação/genética , Adolescente , Agenesia do Corpo Caloso/genética , Agenesia do Corpo Caloso/patologia , Pré-Escolar , Consanguinidade , Deficiências do Desenvolvimento/genética , Deficiências do Desenvolvimento/patologia , Nanismo/patologia , Feminino , Retardo do Crescimento Fetal/patologia , Genótipo , Humanos , Lactente , Recém-Nascido , Masculino , Microcefalia/patologia , Osteocondrodisplasias/patologia , Linhagem , Exame Físico , Transtornos da Pigmentação/patologia , Gravidez , Terceiro Trimestre da Gravidez , RNA Nuclear Pequeno/análise , Irmãos
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