Abstract:
BACKGROUND:Posterior polar cataract is a clinically distinctive opacity located at the back of the lens. It is commonly acquired in age related cataract, and may infrequently occur in pedigrees with congenital cataract. To date, five loci for autosomal dominant congenital posterior polar cataract have been identified. These include two genes, CRYAB and PITX3, on chromosomes 11q and 10q respectively, and three loci with as yet unknown genes on chromosomes 1p, 16q and 20p. PURPOSE:To find the chromosomal location of a gene causing autosomal dominant congenital posterior polar cataract in three Moroccan Jewish families. METHODS:A whole genome scan was performed using microsatellite markers spaced at approximately 10 cM intervals. For fine mapping, five additional microsatellite markers were genotyped. Two-point lod scores were calculated using MLINK software, from the LINKAGE program package. After linkage was established, several positional candidate genes were assessed by PCR based DNA sequencing. RESULTS:The new cataract locus was mapped to an 11.3 cM interval between D14S980 and D14S1069 on chromosome 14q22-23. A maximum two point lod score of 5.19 at theta = 0 was obtained with the markersD14S274. The positional and functional candidate genes SIX1, SIX4, SIX6, OTX2, and ARHJ were excluded as the cause of cataract in these families. CONCLUSION:An as yet unidentified gene associated with posterior polar cataract maps to the long arm of chromosome 14q22-23.
journal_name
J Med Genetjournal_title
Journal of medical geneticsauthors
Pras E,Mahler O,Kumar V,Frydman M,Gefen N,Pras E,Hejtmancik JFdoi
10.1136/jmg.2005.034876subject
Has Abstractpub_date
2006-10-01 00:00:00pages
e50issue
10eissn
0022-2593issn
1468-6244pii
43/10/e50journal_volume
43pub_type
信件abstract:CONTEXT:In hereditary cancer syndrome families with an identified cancer associated mutation, mutation testing changes the carrier risk status of the tested person and may change the carrier risk status of relatives. OBJECTIVE:This study aimed to describe the change in the distribution of carrier risk status resulting...
journal_title:Journal of medical genetics
pub_type: 杂志文章,多中心研究
doi:10.1136/jmg.40.8.591
更新日期:2003-08-01 00:00:00
abstract::Results of genealogical, DNA, and clinical findings in 41 families with 235 patients affected with myotonic dystrophy (DM) led to the following observations. (1) The relative proportion of affected patients among blacks is apparently lower than among whites or orientals. (2) A significant excess of males was observed....
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.32.1.14
更新日期:1995-01-01 00:00:00
abstract::The structure of the locus encoding the major cartilage collagen gene (COL2A1) was studied in a total of 19 cases of achondroplasia. No gross rearrangements were seen. The segregation of COL2A1 was examined in three affected kindreds using restriction site and length variants as genetic markers. In two kindreds discor...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.23.1.19
更新日期:1986-02-01 00:00:00
abstract::This report describes a retarded girl with strabismus, high arched palate, antimongoloid slant, low set ears, hearing loss, micrognathia, short neck, and an anteriorly displaced anus. She was found to have a de novo partial trisomy of the proximal part of the long arm of chromosome 15. ...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.25.4.260
更新日期:1988-04-01 00:00:00
abstract:BACKGROUND:Members of two seemingly unrelated kindreds of Arab Moslem origin presented with pronounced early onset spastic paraparesis of upper and lower limbs, mild intellectual disability, kyphosis, pectus carinatum and hypertrichosis. METHODS:The authors performed neurological and developmental examinations on the ...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmedgenet-2012-100742
更新日期:2012-07-01 00:00:00
abstract::A family with the EEC syndrome is reported. Two sibs have the classical form of the condition with ectrodactyly, ectodermal dysplasia, and clefting. Their mother, however, has only minimal evidence, with preaxial polydactyly of the right hand and duplication of the terminal phalanx of the second toe of the left foot w...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.27.12.752
更新日期:1990-12-01 00:00:00
abstract::Trehalase activity was determined in serum, liver, and kidney in alloxan treated Swiss mice and in homozygous (Ob/Ob, Db/Db) and heterozygous (Ob/+, Db/m+) diabetic mice. Both alloxan and genetic diabetic mice exhibited a large increase in serum and liver trehalase activity with no change in kidney trehalase activity....
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.18.6.418
更新日期:1981-12-01 00:00:00
abstract::The phenotypic and quantitative relationship of red cell acid phosphatase with haemoglobin, haptoglobin, and G6PD phenotypes was investigated in three populations in the Sudan and one population in Nilgiris, India. No significant consistent association of red cell acid phosphatase phenotypes was observed with these po...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.18.4.271
更新日期:1981-08-01 00:00:00
abstract::Four cases of unilateral giant breasts from two unrelated families are described. Three of the patients were managed surgically. It is speculated from a review of available published reports that this condition may be genetic with an autosomal dominant mode of inheritance. ...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.21.2.114
更新日期:1984-04-01 00:00:00
abstract:BACKGROUND:Congenital deletions affecting 3q11q23 have rarely been reported and only five cases have been molecularly characterised. Genotype-phenotype correlation has been hampered by the variable sizes and breakpoints of the deletions. In this study, 14 novel patients with deletions in 3q11q23 were investigated and c...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmedgenet-2011-100534
更新日期:2012-02-01 00:00:00
abstract:BACKGROUND:Intellectual disability (ID) is a highly heterogeneous condition affecting 2% of the population worldwide. In a field study conducted in a highly inbred area of Northeastern Brazil, we investigated a consanguineous family in which seven adults presented syndromic ID. METHODS:Genome-Wide Human SNP Array 6.0 ...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmedgenet-2014-102793
更新日期:2015-02-01 00:00:00
abstract::Four studies reported an increasing incidence of pyloric stenosis during the late 1970s from geographically diverse areas of the United Kingdom. It was suggested that the increased incidence might be related to changes in infant feeding practices. We used data from the Metropolitan Atlanta Congenital Defects Program, ...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.24.8.482
更新日期:1987-08-01 00:00:00
abstract::We report on a sex reversed Japanese child with a 46,X,Yp+ karyotype, minor dysmorphic features, and no testicular development. The Yp+ chromosome was derived by translocation of an Xp fragment (Xp21-Xp22.3) to Yp11.3. This has resulted in deletion of distal part of the Y chromosome pseudoautosomal region (DXYS15-telo...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.29.4.226
更新日期:1992-04-01 00:00:00
abstract::Fucosidosis is a rare, autosomal recessive, lysosomal storage disease, resulting from a deficiency of the enzyme alpha-fucosidase (EC 3.2.1.51). It is characterised clinically by progressive mental and motor deterioration, growth retardation, coarse facies, and often recurrent infections, but the course of the disease...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.30.3.218
更新日期:1993-03-01 00:00:00
abstract::Molecular genetic investigation of a female infant with Beckwith-Wiedemann syndrome (BWS) showed loss of IGF2 imprinting but no evidence of uniparental disomy. In addition, a deletion of chromosome 18q22.1 was identified in this infant without clinical features of 18q-syndrome (microcephaly, short stature, hypotonia)....
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.35.2.162
更新日期:1998-02-01 00:00:00
abstract::Evidence is presented to support the recent suggestion that human neural tube closure is similar to that observed in mice, and comprises several regionally distinct closure sites rather than being a simple zipping up process. Seven subjects, each with more than one neural tube defect (NTD), are described. Comparative ...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.32.3.205
更新日期:1995-03-01 00:00:00
abstract:BACKGROUND:Consensus clinical diagnostic criteria for neurofibromatosis type I (NF1) include café-au-lait macules and skinfold freckling. The former are frequently the earliest manifestation of NF1, and as such are of particular significance when assessing young children at risk of the condition. A phenotype of predomi...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmedgenet-2013-101648
更新日期:2013-09-01 00:00:00
abstract::The macrophage resistance gene NRAMP1 regulates priming/activation of macrophages for enhanced TNF alpha, IL 1 beta, and MHC class II expression. Since all of these functions are of potential importance in the induction or maintenance or both of autoimmune disease, samples from the Arthritis and Rheumatism Council's r...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.33.8.672
更新日期:1996-08-01 00:00:00
abstract::Recent studies have shown that the G-allele of MDM2 SNP309 (T/G) in the p53 tumour suppressor pathway can accelerate tumorigenesis and alter the risk of various cancers in women and not in men. In this report, data are presented from two independent groups of patients that suggest that the G-allele of SNP309 accelerat...
journal_title:Journal of medical genetics
pub_type: 信件
doi:10.1136/jmg.2006.043539
更新日期:2006-12-01 00:00:00
abstract::The features of a child with osteogenesis imperfecta type III (OI III) resulting from the heterozygous substitution of glycine 1006 by alanine in the pro alpha 2(I) chain of type I procollagen were studied. He was born at term with the clinical features of severe OI, including deep grey-blue sclerae. He had severe ost...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.33.3.193
更新日期:1996-03-01 00:00:00
abstract::A common missense mutation in the methylenetetrahydrofolate reductase (MTHFR) gene, a C to T substitution at nucleotide 677, is responsible for reduced MTHFR activity and associated with modestly increased plasma homocysteine concentrations. Since underlying maternal vascular disease increases the risk of pre-eclampsi...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.34.6.525
更新日期:1997-06-01 00:00:00
abstract::A family of male limited gonadotrophin independent precocious puberty was examined for activating mutation of the LH receptor. A transition of A to G in nucleotide 1733 of the human LH receptor gene was identified in all affected males and in an unaffected carrier female. The mutation was shown by identifying a new re...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.32.7.553
更新日期:1995-07-01 00:00:00
abstract::Abnormalities of dystrophin, the sarcoglycans, and laminin alpha2 are responsible for a subset of the muscular dystrophies. In this study we aim to characterise the nature and frequency of abnormalities of these proteins in an Australian population and to formulate an investigative algorithm to aid in approaching the ...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.35.5.379
更新日期:1998-05-01 00:00:00
abstract::Parkinson's disease (PD) is a complex and heterogeneous neurological condition characterised mainly by bradykinesia, resting tremor, rigidity and postural instability, symptoms that together comprise the parkinsonian syndrome. Non-motor symptoms preceding and following clinical onset are also helpful diagnostic marker...
journal_title:Journal of medical genetics
pub_type: 杂志文章,评审
doi:10.1136/jmedgenet-2017-105047
更新日期:2018-02-01 00:00:00
abstract::Adult polycystic kidney disease (APKD) is a common genetic disorder that is inherited as an autosomal dominant trait. Recent reports show that, in some families, the APKD gene shows close genetic linkage to two chromosome 16 specific genetic markers. We have been conducting a genetic linkage study using 29 polymorphic...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.24.8.457
更新日期:1987-08-01 00:00:00
abstract::In an attempt to relate the age at onset of Huntington's disease to parental factors, the effects of parental onset-age (Po) and the age of the transmitting parent at the birth of a subsequently affected child (Pc) have been examined in a sample of cases ascertained from Victorian kindreds. There was a significant pos...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.12.1.64
更新日期:1975-03-01 00:00:00
abstract::Costovertebral dysplasia comprises multiple malformations of the vertebrae and ribs, with a characteristic clinical picture of short trunk dwarfism, short neck, scoliosis, and rib cage deformity. We describe two sibs with the syndrome who are presumed to represent the autosomal recessive form of the disorder. One sib ...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmg.20.6.441
更新日期:1983-12-01 00:00:00
abstract:BACKGROUND:Craniosynostosis (CRS) is a premature closure of calvarial sutures caused by gene mutation or environmental factors or interaction between the two. Only a small proportion of non-syndromic CRS (NSC) patients have a known genetic cause, and thus, it would be meaningful to search for a causative gene disruptio...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:10.1136/jmedgenet-2015-103001
更新日期:2015-10-01 00:00:00
abstract::Cleidocranial dysplasia (CCD) (MIM 119600) is an autosomal dominant skeletal dysplasia characterised by abnormal clavicles, patent sutures and fontanelles, supernumerary teeth, short stature, and a variety of other skeletal changes. The disease gene has been mapped to chromosome 6p21 within a region containing CBFA1, ...
journal_title:Journal of medical genetics
pub_type: 杂志文章,评审
doi:
更新日期:1999-03-01 00:00:00
abstract::Spinocerebellar ataxia type 2 (SCA2) is caused by the expansion of an unstable CAG repeat encoding a polyglutamine tract. Repeats with 32 to 200 CAGs are associated with the disease, whereas normal chromosomes contain 13 to 33 repeats. We tested 220 families of different geographical origins for the SCA2 mutation. Thi...
journal_title:Journal of medical genetics
pub_type: 杂志文章
doi:
更新日期:1999-05-01 00:00:00