نتایج جستجو برای: linked mental retardation

تعداد نتایج: 498290  

Journal: :Journal of medical genetics 2003
I Longo S G M Frints J-P Fryns I Meloni C Pescucci F Ariani M Borghgraef M Raynaud P Marynen C Schwartz A Renieri G Froyen

BACKGROUND The gene encoding fatty acid CoA ligase 4 (FACL4) is mutated in families with non-specific X linked mental retardation (MRX) and is responsible for cognitive impairment in the contiguous gene syndrome ATS-MR (Alport syndrome and mental retardation), mapped to Xq22.3. This finding makes this gene a good candidate for other mental retardation disorders mapping in this region. METHODS...

2017
Ganna Leonenko Alexander L Richards James T Walters Andrew Pocklington Kimberly Chambert Mariam M Al Eissa Sally I Sharp Niamh L O'Brien David Curtis Nicholas J Bass Andrew McQuillin Christina Hultman Jennifer L Moran Steven A McCarroll Pamela Sklar Benjamin M Neale Peter A Holmans Michael J Owen Patrick F Sullivan Michael C O'Donovan

Risk of schizophrenia is conferred by alleles occurring across the full spectrum of frequencies from common SNPs of weak effect through to ultra rare alleles, some of which may be moderately to highly penetrant. Previous studies have suggested that some of the risk of schizophrenia is attributable to uncommon alleles represented on Illumina exome arrays. Here, we present the largest study of ex...

Journal: :Structure 2007
Roberto Valverde Irina Pozdnyakova Tommi Kajander Janani Venkatraman Lynne Regan

Fragile X syndrome is the most common form of inherited mental retardation in humans, with an estimated prevalence of about 1 in 4000 males. Although several observations indicate that the absence of functional Fragile X Mental Retardation Protein (FMRP) is the underlying basis of Fragile X syndrome, the structure and function of FMRP are currently unknown. Here, we present an X-ray crystal str...

Journal: :Human molecular genetics 1998
T Bienvenu V des Portes A Saint Martin N McDonell P Billuart A Carrié M C Vinet P Couvert D Toniolo H H Ropers C Moraine H van Bokhoven J P Fryns A Kahn C Beldjord J Chelly

Non-specific X-linked mental retardation (MRX) is a very common disorder which affects approximately 1 in 600 males. Despite this high frequency, little is known about the molecular defects underlying this disorder, mainly because of the clinical and genetic heterogeneity which is evident from linkage studies. Recently, a collaborative study using the candidate gene approach demonstrated the pr...

Journal: :Human molecular genetics 2001
P Couvert T Bienvenu C Aquaviva K Poirier C Moraine C Gendrot A Verloes C Andrès A C Le Fevre I Souville J Steffann V des Portes H H Ropers H G Yntema J P Fryns S Briault J Chelly B Cherif

Following the recent discovery that the methyl-CpG binding protein 2 (MECP2) gene located on Xq28 is involved in Rett syndrome (RTT), a wild spectrum of phenotypes, including mental handicap, has been shown to be associated with mutations in MECP2. These findings, with the compelling genetic evidence suggesting the presence in Xq28 of additional genes besides RabGDI1 and FMR2 involved in non-sp...

Journal: :Clinical chemistry 2010
Yiping Shen Bai-Lin Wu James F Gusella

Severe intellectual disability (ID), commonly referred to as mental retardation (MR), comprises a large collection of clinical conditions whose associated phenotypes include substantially below-average intelligence test scores and limited abilities in socially adaptive behaviors, such as communication, self-care, social interaction, and school functioning. ID/MR affects 1%–3% of the worldwide p...

Journal: :AJNR. American journal of neuroradiology 2013
T Wada H Ban M Matsufuji N Okamoto K Enomoto K Kurosawa N Aida

BACKGROUND AND PURPOSE X-linked α-thalassemia/mental retardation syndrome (Mendelian Inheritance in Man, 301040) is one of the X-linked intellectual disability syndromes caused by mutations of the ATRX gene and characterized by male predominance, central hypotonic facies, severe cognitive dysfunction, hemoglobin H disease (α-thalassemia), genital and skeletal abnormalities, and autistic and pec...

Journal: :Journal of medical genetics 1975
G Turner C Eastman J Casey A McLeay P Procopis B Turner

Two families are described with an X-linked form of mental retardation in whom the affected males were found to have bilateral enlargement of the testes. No conclusive evidence of any endocrinological disturbance was found.

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