Abstract:
:Identifying a mutation in a heterogeneous disease such as inherited cardiomyopathy is a challenge because classical methods, like linkage analysis, can often not be applied as there are too few meioses between affected individuals. However, if affected individuals share the same causal mutation, they will also share a genomic region surrounding it. High-density genotyping arrays are able to identify such regions shared among affected individuals. We hypothesize that the longest shared haplotype is most likely to contain the disease-causing mutation. We applied this method to two pedigrees: one with arrhythmogenic right ventricular cardiomyopathy (ARVC) and one with dilated cardiomyopathy (DCM), using high-density genome-wide SNP arrays. In the ARVC pedigree, the largest haplotype was on chromosome 12 and contained a causative PKP2 mutation. In the DCM pedigree, a causative MYH7 mutation was present on a large shared haplotype on chromosome 14. We calculated that a pedigree containing at least seven meioses has a high chance of correctly detecting the mutation-containing haplotype as the largest. Our data show that haplotype sharing analysis can assist in identifying causative genes in families with low penetrance Mendelian diseases, in which standard tools cannot be used due to lack of sufficient pedigree information.
journal_name
Clin Genetjournal_title
Clinical geneticsauthors
van der Zwaag PA,van Tintelen JP,Gerbens F,Jongbloed JD,Boven LG,van der Smagt JJ,van der Roest WP,van Langen IM,Bikker H,Hauer RN,van den Berg MP,Hofstra RM,te Meerman GJdoi
10.1111/j.1399-0004.2010.01472.xsubject
Has Abstractpub_date
2011-05-01 00:00:00pages
459-67issue
5eissn
0009-9163issn
1399-0004pii
CGE1472journal_volume
79pub_type
杂志文章abstract::This report concerns two patients with clinical features typical for tetrasomy 18p syndrome. Chromosomal analysis revealed a male karyotype in both cases, with an additional small metacentric marker chromosome, putatively an i(18p). Fluorescent in situ hybridization with a chromosome 18-specific paint confirmed that t...
journal_title:Clinical genetics
pub_type: 杂志文章,评审
doi:10.1111/j.1399-0004.1994.tb04035.x
更新日期:1994-06-01 00:00:00
abstract::Over the past few years, we have conducted a systematic study of 230 cystic fibrosis (CF) chromosomes in the Saguenay Lac-Saint-Jean (SLSJ) population which has a high CF incidence (1/936 live births). We identified 11 mutations accounting for 100% of the CF chromosomes found in patients born in SLSJ. Our results indi...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1034/j.1399-0004.1998.531530108.x
更新日期:1998-01-01 00:00:00
abstract::The nitric oxide synthase (NOS) gene is thought to be associated with essential hypertension (EH), because NO is implicated in endothelium-mediated vasodilation. We investigated the possible association between the alleles of simple tandem repeat DNA polymorphism of the endothelial constitutive NOS (cNOS) gene and EH ...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.1997.tb02409.x
更新日期:1997-01-01 00:00:00
abstract::The presence of Y chromosome sequences in Turner syndrome (TS) patients may predispose them to gonadoblastoma formation with an estimated risk of 15-25%. The aim of this study was to determine the presence and the incidence of cryptic Y chromosome material in the genome of TS patients. The methodology involved a combi...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.1998.tb02691.x
更新日期:1998-04-01 00:00:00
abstract::We report a family in which a woman with the mosaic karyotype 45,X/46,X,del(X)(p21.2) transmitted the deleted X chromosome to two daughters. The nature of the deletion was confirmed by fluorescent in situ hybridization (FISH). All three family members showed somatic Ullrich-Turner syndrome features, but only one daugh...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.1997.tb02554.x
更新日期:1997-10-01 00:00:00
abstract::We identified the homozygous p.Arg12* variant in 5 patients with neurodevelopmental delay, but variation databases list many truncating heterozygous variants for this small 2-exon gene. As most of these affect the protein's C-terminus, loss-of-function mediated pathogenicity may be confined to bi-allelic truncating va...
journal_title:Clinical genetics
pub_type: 信件
doi:10.1111/cge.13386
更新日期:2018-10-01 00:00:00
abstract::Germline mutations of the STK11 gene mapped to chromosome 19p13.3 are responsible for Peutz Jeghers syndrome (PJS), a dominant disorder associated with characteristic gastrointestinal hamartomatous polyps and a predisposition to various cancers. We conducted a detailed investigation of germline STK11 alterations by pr...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1034/j.1399-0004.1999.560207.x
更新日期:1999-08-01 00:00:00
abstract::Type 1a glycogen storage disease (GSD) is an autosomal recessive metabolic disorder caused by a deficiency in glucose-6-phosphatase (G6Pase). Polymerase chain reaction (PCR) and nucleotide sequence analysis were used to identify the location and nature of mutations at the G6Pase locus in two siblings affected with typ...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.1996.tb02627.x
更新日期:1996-10-01 00:00:00
abstract::Twenty-five novel mutations including duplications in the ATP7A gene. Menkes disease (MD) and occipital horn syndrome (OHS) are allelic X-linked recessive copper deficiency disorders resulting from ATP7A gene mutations. MD is a severe condition leading to progressive neurological degeneration and death in early childh...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.2010.01461.x
更新日期:2011-03-01 00:00:00
abstract::Debate continues as to why executive function (EF) continues to show impairments in children with early and continuously treated phenylketonuria (ECT-PKU). Using a mixed model, we measured EF in 10 adolescent children with ECT-PKU and 6 sibling controls, and examined associations between EF and (1) phenylalanine (phe)...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.2008.01101.x
更新日期:2009-02-01 00:00:00
abstract::Mutations in PCDH19, which encodes protocadherin 19, have been identified in epilepsy, mainly in affected females. We summarized the clinical spectrum of female epilepsy patients with PCDH19 mutations in a Chinese population. We screened for PCDH19 mutations in 75 girls diagnosed with Dravet syndrome (DS) without a SC...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/cge.12846
更新日期:2017-01-01 00:00:00
abstract::Niemann-Pick diseases are hereditary neurovisceral lysosomal lipid storage disorders, of which the rare type C2 almost uniformly presents with respiratory distress in early infancy. In the patient presented here, the NPC2 exon 4 frameshift mutation c.408_409delAA caused reduced NPC2 protein levels in serum and lung la...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.2009.01325.x
更新日期:2010-02-01 00:00:00
abstract::A total of 206 patients with Marfan syndrome were ascertained throughout genetic clinics in Wales and Scotland during the period 1970-1990. There were 45 deaths representing 22% of the cohort. Mean age at death was 45.3+/-16.5 years. 50% median cumulative survival in the total cohort (n=206) was 53 years for males and...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.1998.tb03714.x
更新日期:1998-08-01 00:00:00
abstract::Apolipoprotein C3 (APOC3) mutations carriers typically display high plasma high-density lipoprotein cholesterol (HDL-C) and low triglycerides (TGs). We set out to investigate the prevalence and clinical consequences of APOC3 mutations in individuals with hyperalphalipoproteinemia. Two novel mutations (c.-13-2A>G and c...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/cge.12201
更新日期:2014-05-01 00:00:00
abstract::A boy with Prader-Willi syndrome was found to have an inversion of chromosome 15,[46,XY,inv(15)(p13q13)]. His unaffected father has an apparently identical inversion of chromosome 15 but in addition has a number 14 chromosome with double satellites. This report supports previous indications of a relationship between a...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.1983.tb00104.x
更新日期:1983-12-01 00:00:00
abstract::A linkage study was carried out in nine families with 24 males affected by X-linked recessive retinoschisis (RS), using three polymorphic DNA probes from the distal segment of Xp. Close linkage of the disease locus with markers DXS41 (probe p99-6) and DXS16 (pXUT23) was found, confirming the location of the RS gene on...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.1987.tb03353.x
更新日期:1987-09-01 00:00:00
abstract::Two hundred and thirty-five survivors of myocardial infarction (MI) were compared to 384 controls with respect to distribution of genotypes and gene frequencies in the A1166C polymorphism at the angiotensin II type 1 receptor (AT1R) locus. No differences in allele frequencies or genotype distribution were observed whe...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.1997.tb02521.x
更新日期:1997-08-01 00:00:00
abstract::Therapeutic abortions were performed in two cases of spina bifida which were diagnosed by determination of the lafa fetoprotein levels in the amniotic fluid and maternal serum. ...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.1975.tb00315.x
更新日期:1975-02-01 00:00:00
abstract::It is well known that founder mutations associated with cancer risk have useful implications for molecular diagnostics. We report the presence of a founder mutation in EPCAM involved in the etiology of Lynch syndrome (LS). The mutation extends nearly 8.7 kb (c.858 + 2478_*4507del) and is shared by 8 Polish families. F...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/cge.13026
更新日期:2017-12-01 00:00:00
abstract::Genetic diseases in the Tunisian population represent a real problem of public health as their spectrum encompasses more than 400 disorders. Their frequency and distribution in the country have been influenced by demographic, economic and social features especially consanguinity. In this article, we report on genetic ...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/cge.12616
更新日期:2016-03-01 00:00:00
abstract::This qualitative study explored the impact of genetic risk information from BRCA1/2 testing on individuals' subjective understandings of self and self-identity. In-depth interviews were conducted with 39 participants (34 women and 5 men) who had received test results from BRCA1/2 testing. Themes emerging from qualitat...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.2006.00720.x
更新日期:2006-12-01 00:00:00
abstract::A report is made on a rare isodicentric chromosome 18 in an abnormal male infant whose karyotype was 46,XY,idic(18)(p11.31----qter), confirmed by in situ hybridization using non-radioactive biotin-labelled 18 probe. His clinical features were similar to 18 trisomy syndrome. The literature concerning isochromosome 18 i...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:
更新日期:1992-05-01 00:00:00
abstract::Kallmann syndrome is defined by the association of hypogonadotropic hypogonadism and anosmia. A previously unreported association of Kallmann syndrome and choanal atresia in a family is reported. The mechanism of the embryopathic association of hypogonadotropic hypogonadism, anosmia, and choanal atresia is though to b...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.1987.tb02800.x
更新日期:1987-04-01 00:00:00
abstract::A third case of an interstitial deletion of the long arm of chromosome 6 with clinical features mimicking Prader-Willi syndrome (PWS) is presented. Although preliminary clinical evaluation in each case suggested PWS, further review revealed that the features in all three cases are not completely compatible with the ch...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.1996.tb03794.x
更新日期:1996-06-01 00:00:00
abstract::In this report, a case with corpus callosum dysgenesis, infantile spasm, microcephaly, psychomotor retardation, exophthalmos, cleft lip-palate and abnormal EEG findings is presented. His parents are first-degree relatives. We could not fully match the findings of our patient with the criteria of any syndrome published...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.1996.tb03291.x
更新日期:1996-04-01 00:00:00
abstract::The increasing use of array-comparative genomic hybridization (array-CGH) to identify copy number variations (CNVs) in patients with developmental delay (DD), mental retardation and/or dysmorphic features has allowed the recent recognition of numerous genomic imbalances, including the 15q13.3 microdeletion. Patients w...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.2010.01374.x
更新日期:2010-08-01 00:00:00
abstract::Missense MECP2 variants can have various phenotypic effects ranging from a normal phenotype to typical Rett syndrome (RTT). In females, the phenotype can also be influenced by the X-inactivation pattern. In this study, we present detailed clinical descriptions of six patients with a rare base-pair substitution affecti...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/cge.12769
更新日期:2016-06-01 00:00:00
abstract::Branched chain alpha-ketoacid dehydrogenase (BCKAD) deficiency, or maple syrup urine disease (MSUD), can be categorized as classical, intermediate, intermittent or thiamine responsive, based on generally concordant in vitro BCKAD activity and severity of phenotype. We present clinical and enzymatic data on a boy with ...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1111/j.1399-0004.1985.tb00203.x
更新日期:1985-02-01 00:00:00
abstract::Fabry disease is an X-linked disorder caused by a deficiency of the lysosomal alpha-galactosidase A [EC 3.2.1.22]. The molecular diagnosis of Fabry disease is important for genotype/phenotype correlation, pre-natal or early diagnosis, and detection of carrier status. Although more than 200 genotypes of the alpha-galac...
journal_title:Clinical genetics
pub_type: 杂志文章
doi:10.1034/j.1399-0004.2003.00050.x
更新日期:2003-03-01 00:00:00
abstract::Split-hand/foot malformation (SHFM) is caused by mutations in TP63, DLX5, DLX6, FGF8, FGFR1, WNT10B, and BHLHA9. The clinical features of SHFM caused by mutations of these genes are not distinguishable. This implies that in normal situations these SHFM-associated genes share an underlying regulatory pathway that is in...
journal_title:Clinical genetics
pub_type: 杂志文章,评审
doi:10.1111/cge.13434
更新日期:2019-01-01 00:00:00