journal
MENU ▼
Read by QxMD icon Read
search

Molecular Syndromology

journal
https://www.readbyqxmd.com/read/28588438/a-new-case-of-the-rare-10q22-3q23-2-microdeletion-flanked-by-low-copy-repeats-3-4
#1
Miriam Coelho Molck, Milena Simioni, Társis Paiva Vieira, Fabíola Paoli Monteiro, Vera L Gil-da-Silva-Lopes
Deletions in the 10q22.3q23.2 region are rare and mediated by 2 low-copy repeats (LCRs 3 and 4). These deletions have already been recognized as the 10q22q23 deletion syndrome. The phenotype associated with this condition is rather uncharacteristic, and most common features are craniofacial dysmorphisms and developmental delay. We describe a boy with craniofacial dysmorphic features, developmental delay, tetralogy of Fallot, hand/foot abnormalities, and recurrent respiratory tract infections. Chromosomal microarray analysis disclosed a 7...
May 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28588437/molecular-characterization-of-koolen-de-vries-syndrome-in-two-girls-with-idiopathic-intellectual-disability-from-central-brazil
#2
Gustavo R Nascimento, Irene P Pinto, Aldaires V de Melo, Damiana M da Cruz, Cristiano L Ribeiro, Claudio C da Silva, Aparecido D da Cruz, Lysa B Minasi
Koolen de Vries syndrome (KDVS; MIM 610443) is a genomic disorder caused by a recurrent microdeletion derived from nonallelic homologous recombination mediated by flanking segmental duplications. Clinical manifestations of this syndrome are characterized by intellectual disability, hypotonia, a friendly behavior, distinctive facial features, and epilepsy. Herein, we report a case of 2 girls who revealed global developmental delay, mild facial dysmorphisms, friendly behavior, and epileptic seizure with a de novo 17q21...
May 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28588436/novel-marfan-syndrome-associated-mutation-in-the-fbn1-gene-caused-by-parental-mosaicism-and-leading-to-abnormal-limb-patterning
#3
Efrén Martínez-Quintana, Noemí Caballero-Sánchez, Fayna Rodríguez-González, Paloma Garay-Sánchez, Antonio Tugores
Marfan syndrome is an autosomal dominant disorder of the connective tissue caused by mutations in the fibrillin-1 (FBN1) gene. Mutations affecting cysteine residues within the epidermal growith factor-like calcium-binding domains (EGF_CA) of FBN1 are associated with Marfan syndrome features and, especially, with ectopia lentis. We report a novel substitution, affecting the first cysteine of an EGF_CA-binding module encoded by exon 63 of FBN1 (C2571Y), in a patient presenting with typical Marfan syndrome features but without ectopia lentis...
May 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28588435/variable-penetrance-of-the-15q11-2-bp1-bp2-microduplication-in-a-family-with-cognitive-and-language-impairment
#4
Antonio Benítez-Burraco, Montserrat Barcos-Martínez, Isabel Espejo-Portero, Salud Jiménez-Romero
The 15q11.2 BP1-BP2 region is found duplicated or deleted in people with cognitive, language, and behavioral impairment. We report on a family (a father and 3 male twin siblings) that presents with a duplication of the 15q11.2 BP1-BP2 region and a variable phenotype: the father and the fraternal twin are normal carriers, whereas the monozygotic twins exhibit severe language and cognitive delay as well as behavioral disturbances. The genes located within the duplicated region are involved in brain development and function, and some of them are related to language processing...
May 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28588434/maternal-uniparental-disomy-14-temple-syndrome-as-a-result-of-a-robertsonian-translocation
#5
Veronica Bertini, Antonella Fogli, Rossella Bruno, Alessia Azzarà, Angela Michelucci, Teresa Mattina, Silvano Bertelloni, Angelo Valetto
Maternal uniparental disomy of chromosome 14 (upd(14)mat) or Temple syndrome is an imprinting disorder associated with a relatively mild phenotype. The absence of specific congenital malformations makes this condition underdiagnosed in clinical practice. A boy with a de novo robertsonian translocation 45,XY,rob(13;14)(q10;q10) is reported; a CGH/SNP array showed a loss of heterozygosity in 14q11.2q13.1. The final diagnosis of upd(14)mat was made by microsatellite analysis, which showed a combination of heterodisomy and isodisomy for different regions of chromosome 14...
May 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28588433/intragenic-cntnap2-deletions-a-bridge-too-far
#6
REVIEW
Martin Poot
Intragenic deletions of the contactin-associated protein-like 2 gene (CNTNAP2) have been found in patients with Gilles de la Tourette syndrome, intellectual disability (ID), obsessive compulsive disorder, cortical dysplasia-focal epilepsy syndrome, autism, schizophrenia, Pitt-Hopkins syndrome, stuttering, and attention deficit hyperactivity disorder. A variety of molecular mechanisms, such as loss of transcription factor binding sites and perturbation of penetrance and expressivity, have been proposed to account for the phenotypic variability resulting from CNTNAP2 mutations...
May 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28588432/of-simple-and-complex-genome-rearrangements-chromothripsis-chromoanasynthesis-and-chromosome-chaos
#7
EDITORIAL
Martin Poot
No abstract text is available yet for this article.
May 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28611553/a-female-patient-with-fmr1-premutation-and-mosaic-x-chromosome-aneuploidy-and-two-sons-with-intellectual-disability
#8
Ekaterina M Galanina, Andrey A Tulupov, Natalya A Lemskaya, Aleksandra M Korostyshevskaya, Yuliya V Maksimova, Asia R Shorina, Andrey A Savelov, Irina G Sergeeva, Evgeniya R Isanova, Irina V Grishchenko, Dmitry V Yudkin
In this report, we describe a molecular cytogenetic study of a family burdened with intellectual disability (ID) and suicide. Our study revealed that the mother has a heterozygous premutation in the FMR1 gene and supernumerary X chromosomes as well as X-derived marker chromosomes. Both of her sons have ID and a normal chromosome number. One of the sons has fragile X syndrome, and the other has ID of an unclear nature.
March 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28611552/a-novel-mutation-in-pitx2-in-a-patient-with-axenfeld-rieger-syndrome
#9
Susan J Hassed, Shibo Li, Weihong Xu, Ashley C Taylor
Axenfeld-Rieger syndrome is a rare autosomal dominant condition. Anomalies include anterior segment dysgenesis of the eye, dental anomalies, maxillary hypoplasia, periumbilical anomalies, and congenital heart defects. We report a patient with Peters anomaly, dysmorphic features, congenital heart defect, umbilical hernia, short stature, and developmental delay. Diagnostic sequencing of 23 genes known to be causally related to the condition was performed on the patient, parents, and maternal grandparents. A variant of uncertain significance in PITX2 was identified...
March 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28611551/first-two-cases-of-bloom-syndrome-in-russia-lack-of-skin-manifestations-in-a-blm-c-1642c-t-p-q548x-homozygote-as-a-likely-cause-of-underdiagnosis
#10
Evgeny N Suspitsin, Farida I Sibgatullina, Lydia V Lyazina, Evgeny N Imyanitov
Bloom syndrome (BS) is an exceptionally rare hereditary disease. Typical manifestations of BS usually include growth deficiency, a characteristic facial appearance, skin hypersensitivity to ultraviolet irradiation, and a strong predisposition to early-onset cancers. We have previously described a recurrent BLM c.1642C>T (p.Q548X) mutation, which is present in heterozygous state in 0.2-0.6% of individuals of Slavic origin. Despite the high occurrence of this founder allele, BS has not yet been described in patients of Slavic ethnicity...
March 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28611550/familial-5q12-3-microdeletion-evidence-for-a-locus-associated-with-epilepsy
#11
Chiara Gnan, Alessandra Franzoni, Federica Baldan, Nadia Passon, Giuseppe Damante, Patrizia Dello Russo
The clinical use of array comparative genomic hybridization (array CGH) has allowed the identification of very rare deletion and duplication disorders, such as 5q12 deletion syndrome (OMIM 615668) described as a contiguous gene deletion syndrome of chromosome 5q12. Chromosome microdeletions including band 5q12 have rarely been reported and have been associated with different phenotypes showing postnatal growth restriction, intellectual disability, epileptic seizures, hyperactivity, and ocular abnormalities...
March 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28611549/mutation-c-943g-t-p-ala315ser-in-fgfr2-causing-a-mild-phenotype-of-crouzon-craniofacial-dysostosis-in-a-three-generation-family
#12
Luitgard M Graul-Neumann, Eva Klopocki, Nicolai Adolphs, Martin A Mensah, Wolfram Kress
Crouzon syndrome craniofacial dysostosis type I [OMIM 123500] is caused by mutations in the gene encoding fibroblast growth factor receptor-2 (FGFR2). An overlapping phenotype with Muenke and Crouzon syndrome with acanthosis nigricans (FGFR3 mutations) is known. The clinical diagnosis can be corroborated by molecular studies in about 80-90% of the cases. No clear genotype/phenotype correlation has been identified yet. Here, we describe a second family with a mild phenotype in which the FGFR2 mutation c.943G>T leading to the amino acid substitution p...
March 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28611548/hippocampal-characteristics-and-invariant-sequence-elements-distribution-of-glra2-and-glra3-c-to-u-editing
#13
Philipp Schaefermeier, Sarah Heinze
Glycine receptor α2 and α3 subunit (GLRA2/GLRA3) high-affinity variants, of which the subjacent amino acid substitutions issue from C-to-U RNA editing, are thought to influence tonic inhibition and pathophysiology. In light of the detection of GLRA3 NM_006529:r.1157C>U and GLRA2 NM_002063:r.1416C>U exchanges in hippocampus explants of temporal lobe epilepsy patients, we now examine the healthy situation and relate it to the epileptic situation by ascertaining controls in a legitimate reanalysis. The GLRA2 and GLRA3 editing events that would ultimately result in a glycine receptor with increased affinity occur in the postmortem nonepileptic hippocampus...
March 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28611547/a-novel-heterozygous-intragenic-sequence-variant-in-dlx6-probably-underlies-first-case-of-autosomal-dominant-split-hand-foot-malformation-type-1
#14
Asmat Ullah, Anam Hammid, Muhammad Umair, Wasim Ahmad
Split-hand and foot malformation (SHFM; MIM 183600) is a rare human genetic limb malformation. It is characterized by missing digital rays in the hands and feet. SHFMs vary in severity from mild abnormalities affecting a single limb to acute malformations involving all 4 limbs. It is inherited, as part of both a syndromic and nonsyndromic disorder, in an autosomal recessive, autosomal dominant, and X-linked patterns. So far, 9 loci of hand and foot malformation have been mapped on human chromosomes. The present study describes a family with 2 affected individuals segregating SHFM in an autosomal dominant fashion...
March 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28611546/inherited-congenital-cataract-a-guide-to-suspect-the-genetic-etiology-in-the-cataract-genesis
#15
REVIEW
Olga Messina-Baas, Sergio A Cuevas-Covarrubias
Cataracts are the principal cause of treatable blindness worldwide. Inherited congenital cataract (CC) shows all types of inheritance patterns in a syndromic and nonsyndromic form. There are more than 100 genes associated with cataract with a predominance of autosomal dominant inheritance. A cataract is defined as an opacity of the lens producing a variation of the refractive index of the lens. This variation derives from modifications in the lens structure resulting in light scattering, frequently a consequence of a significant concentration of high-molecular-weight protein aggregates...
March 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28611545/retrotransposing-gremlins-may-disrupt-our-brain-s-genomes
#16
EDITORIAL
Martin Poot
No abstract text is available yet for this article.
March 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28232784/williams-syndrome-and-15q-duplication-coincidence-versus-association
#17
Aditi Khokhar, Swashti Agarwal, Sheila Perez-Colon
Williams syndrome is a multisystem disorder caused by contiguous gene deletion in 7q11.23, commonly associated with distinctive facial features, supravalvular aortic stenosis, short stature, idiopathic hypercalcemia, developmental delay, joint laxity, and a friendly personality. The clinical features of 15q11q13 duplication syndrome include autism, mental retardation, ataxia, seizures, developmental delay, and behavioral problems. We report a rare case of a girl with genetically confirmed Williams syndrome and coexisting 15q duplication syndrome...
January 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28232783/complex-mosaic-ring-chromosome-11-associated-with-hemizygous-loss-of-8-6-mb-of-11q24-2qter-in-atypical-jacobsen-syndrome
#18
Alexandra Galvão Gomes, Carlos H Paiva Grangeiro, Luiz R Silva, Flávia G Oliveira-Gennaro, Ciro S Pereira, Tatiana M Joaquim, Rodrigo A Panepucci, Jeremy A Squire, Lucia Martelli
Jacobsen syndrome (JBS) is a contiguous gene deletion syndrome involving terminal chromosome 11q. The haploinsufficiency of multiple genes contributes to the overall clinical phenotype, which can include the variant Paris-Trousseau syndrome, a transient thrombocytopenia related to FLI1 hemizygous deletion. We investigated a boy with features of JBS using classic cytogenetic methods, FISH and high-resolution array CGH. The proband was found to have a mosaic ring chromosome 11 resulting in a hemizygous 11q terminal deletion of 8...
January 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28232782/an-11-4-mb-interstitial-deletion-in-a-fetus-with-no-apparent-phenotypic-alterations
#19
Paolo Guanciali-Franchi, Claudio Celentano, Melissa Alfonsi, Chiara Palka, Giulietta Di Pasqua, Barbara Matarrelli, Giandomenico Palka
A prenatal case of a de novo interstitial deletion distal to 8q24 was reported. Ultrasound examination and postmortem evaluation demonstrated no apparent phenotypic alterations. Array CGH showed an 11.4-Mb loss in chromosome 8 ranging from 8q24.13 to 8q24.23. This case partially overlaps the 2 cases previously described in the literature.
January 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28232781/17p13-3-microdeletion-insights-on-genotype-phenotype-correlation
#20
Marshall I Barros Fontes, Ana P Dos Santos, Fábio Rossi Torres, Iscia Lopes-Cendes, Fernando Cendes, Simone Appenzeller, Tânia Kawasaki de Araujo, Isabella Lopes Monlleó, Vera L Gil-da-Silva-Lopes
Microdeletions in the chromosomal region 17p13.3 are associated with neuronal migration disorders, and PAFAB1H1 is the main gene involved. The largest genomic imbalances, including the YWHAE and CRK genes, cause more severe structural abnormalities of the brain and other associated dysmorphic features. Here, we describe a 3-year-old boy with a microdeletion in 17p13.3 presenting with minor facial dysmorphisms, a cleft palate, neurodevelopmental delay, and behavioral disorder with no structural malformation of the brain...
January 2017: Molecular Syndromology
journal
journal
42894
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"