I Arrieta, B Criado, B Martinez, M Telez, T Nuñez, O Peñagarikano, B Ortega, C M Lostao
{"title":"A survey of fragile X syndrome in a sample from Spanish Basque country.","authors":"I Arrieta, B Criado, B Martinez, M Telez, T Nuñez, O Peñagarikano, B Ortega, C M Lostao","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Fragile X syndrome is the most common inherited form of mental retardation. The syndrome is associated with a CGG repeat expansion in the 5'UTR of the first exon of the FMR1 gene. This gene maps to Xq27.3 and coincides with the cytogenetic fragile site (FRAXA). The present study deals with the prevalence of fragile X syndrome among individuals with mental retardation of unknown cause from institutions and special schools from the Spanish Basque Country. Results of cytogenetic and molecular studies, performed in a group of 134 unrelated individuals (92 males and 42 females) are presented. The cytogenetic marker at Xq27.3 was identified in 12 patients. Other chromosomal abnormalities were found in two cases that this and previous studies confirmed as Angelman and Prader-Willi syndromes. Two males, in whom the cytogenetic marker was identified, were found negative for FRAXA and FRAXE expansion at the molecular level. The present study shows that the frequency of the FRAXA full mutation in individuals of Spanish non-Basque origin is in the range of other Spanish populations. In the sample of Spanish Basque origin we have not found cytogenetic FRAXA site expression, and the CGG repeat size of FMR1 gene is in the normal range. The significance of these results are discussed.</p>","PeriodicalId":7908,"journal":{"name":"Annales de genetique","volume":"42 4","pages":"197-201"},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21527242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Pure partial trisomy 5q33-->5q35 resulting from the adjacent-1 segregation of a paternal (5;14)(q33;p12) translocation.","authors":"A Paoloni-Giacobino, A Bottani, S P Dahoun","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A 14-year-old male was referred for evaluation of mental retardation with short stature and dysmorphic features. His karyotype was 46,XY,der(14)t(5;14)(q33;p12)pat, resulting in a pure partial 5q33-q35 trisomy due to the adjacent-1 segregation of a paternal balanced translocation. Paternal blood karyotype revealed a balanced translocation t(5;14)(q33;p12) retaining Ag-Nors. To date, only two cases of pure partial 5q trisomies spanning this region have been reported. Analysis of these cases and the one we report does not allow the delineation of a specific phenotype.</p>","PeriodicalId":7908,"journal":{"name":"Annales de genetique","volume":"42 3","pages":"166-9"},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21388186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[A brief history of medical genetics].","authors":"J Frézal","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":7908,"journal":{"name":"Annales de genetique","volume":"42 2","pages":"122-8"},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21300032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J J Engelen, C E De Die-Smulders, P T Vos, L E Meers, J C Albrechts, A J Hamers
{"title":"Characterization of a partial trisomy 16q with FISH. Report of a patient and review of the literature.","authors":"J J Engelen, C E De Die-Smulders, P T Vos, L E Meers, J C Albrechts, A J Hamers","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Characterization of a partial trisomy 16 q with FISH: Report of a patient and literature review: We report on a 28-year-old male patient with severe growth and mental retardation, severe behavioural problems, especially automutilation, and a spastic quadriplegia. He showed no specific dysmorphism. The karyotype was 46, XY, dir dup(16) (q11.2-q13). The clinical and cytogenetical findings are compared with 3 previously reported cases with proximal duplication 16q.</p>","PeriodicalId":7908,"journal":{"name":"Annales de genetique","volume":"42 2","pages":"101-4"},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21300164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J H Gallo, L G Robson, N W Watson, P Sharma, A Smith
{"title":"Comparison of metaphase and interphase FISH monitoring of minimal residual disease with MLL gene probe: case study of AML with t(9;11).","authors":"J H Gallo, L G Robson, N W Watson, P Sharma, A Smith","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The place of FISH in the monitoring of minimal residual disease (MRD) is yet to be fully characterised. Routine bone marrow cytogenetics at diagnosis in a 22 year old patient with acute myeloid leukemia FAB type M5 detected a translocation t(9;11)(p22;q23). We report our investigations to assess residual levels of translocation using a FISH probe designed to detect a gene split by the translocation. We used MLL (Oncor), a probe which spans the MLL gene at 11q23, in both metaphase and interphase preparations. At diagnosis, metaphase FISH showed 3 distinct cell lines-normal with 2 signals, abnormal with 3 signals and abnormal with 2 signals, while interphase FISH showed only 2 cell lines, one with 2 signals (which could be normal or abnormal) and one with 3 signals (split MLL). Following treatment, with the patient in clinical remission, 7 further cytogenetic analyses and 2 further FISH analyses were compared. Our results suggest that monitoring of the t(9;11) by metaphase FISH is feasible and straightforward compared to cytogenetics but interphase FISH may be problematic.</p>","PeriodicalId":7908,"journal":{"name":"Annales de genetique","volume":"42 2","pages":"109-12"},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21300166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S Duthel, M Bost, E Ollagnon, C Vial, P Petiot, G Chazot, A Vandenberghe
{"title":"CTG instability in myotonic dystrophy: molecular genetic analysis of families from south-eastern France with characteristics of intergenerational variation in CGT repeat numbers.","authors":"S Duthel, M Bost, E Ollagnon, C Vial, P Petiot, G Chazot, A Vandenberghe","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>We report clinical, genetical and genealogical findings in 149 French families from the Rhône-Alpes area studied over a 5-year period. There was a significant excess of DM females compared to DM males with (CTG) repeat sizes between 1-2 kb. The mean maternal (CTG) repeat size was higher than paternal repeat size. Anticipation phenomenom was significantly higher after maternal than after paternal transmission. A significant correlation between parental (CTG) repeat size and intergenerational variation both in paternal and maternal transmissions was observed. The anticipation phenomenom was more important for sons than daughters particularly after maternal transmission. The mean (CTG) repeat size in mothers of CDM cases was about twice that of mothers of NCDM children. The risk of giving birth to a CDM child increased considerably when the number of maternal (CTG) repeats was over 300 (CTG). A significant excess of DM females was observed. They had on average 24% fewer children than male patients. Paternal transmission (63.6%) of DM occurred more frequently than maternal transmission (52.7%).</p>","PeriodicalId":7908,"journal":{"name":"Annales de genetique","volume":"42 3","pages":"151-9"},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21388184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I Luquet, B Favre, N Nadal, N Madinier, P Khau Van Kien, F Huet, A Nivelon-Chevallier, F Mugneret
{"title":"Two cases of terminal deletion of chromosome 13: clinical features, conventional and molecular cytogenetic analysis.","authors":"I Luquet, B Favre, N Nadal, N Madinier, P Khau Van Kien, F Huet, A Nivelon-Chevallier, F Mugneret","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>We report the cases of two unrelated patients with psychomotor retardation and craniofacial abnormalities, in whom cytogenetic studies have revealed a terminal deletion of chromosome 13 confirmed by fluorescence in situ hybridization (FISH). This del(13)(q33.2) is the smallest terminal deletion of the 13q reported so far. Interestingly enough, the serum level of coagulation factors VII and X, whose genes are located in 13q34, were reduced in both patients. These cases illustrate the difficulties in identifying precisely chromosome deletions and demonstrate that FISH techniques allow to obtain a more precise correlation between clinical phenotype and cytogenetic abnormalities.</p>","PeriodicalId":7908,"journal":{"name":"Annales de genetique","volume":"42 1","pages":"33-9"},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21084884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G M Azar, R A Conte, S M Kleyman, A Z Logush, R S Verma
{"title":"Probing the human genome in search for a new 3q syndrome.","authors":"G M Azar, R A Conte, S M Kleyman, A Z Logush, R S Verma","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>We report a case of partial trisomy 3q syndrome which could not be clinically identified as a distinct entity. The major clinical findings include: psychomotor delay with behavioral problems, coarse facial features, frontal bossing, bushy eyebrows, prominent ears, a small upturned nose and a history of repaired inguinal hernia. There was an additional material on chromosome 4, which could easily be matched with bands 18q21.2-q22; 2p24-p25; 16p21-p23; 10p12-p14; 20q12-q13.2; 15q25-q26.2; 8p23-p24.2 and 6p22.3-p24 and a new syndrome could apparently be suggested based on GTG techniques alone. Nevertheless, by FISH technique, the extra segment was identified as a part of 3q26.3-qter. We provide an extensive review of trisomy 3q syndrome and present a caveat of the consequences of description of new syndromes based on routine banding techniques especially in situations where the origin of chromosomal abnormalities is de novo or parents are not available for cytogenetic evaluation.</p>","PeriodicalId":7908,"journal":{"name":"Annales de genetique","volume":"42 2","pages":"95-100"},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21300163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Familial coarctation of the aorta in three generations.","authors":"C Stoll, Y Alembik, B Dott","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Four members in three generations of a family were affected by a coarctation of the aorta (CoA) which was mild or severe, either isolated or in association with other cardiac defects. This family suggests that a rare form of CoA could be the result of an autosomal dominant mutation with incomplete penetrance and variable expressivity rather than polygenic inheritance.</p>","PeriodicalId":7908,"journal":{"name":"Annales de genetique","volume":"42 3","pages":"174-6"},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21388188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A syndrome of congenital ichthyosis, hypogonadism, small stature, facial dysmorphism, scoliosis and myogenic dystrophy.","authors":"C Stoll, D Eyer","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Rud syndrome formerly was considered as a genetically heterogeneous but distinct clinical entity with the manifestations of ichtyosis, hypogonadism, small stature, mental retardation, epilepsy and, infrequently, retinitis pigmentosa. The existence of such a syndrome has recently been dismissed based on a new understanding of the ichthyoses. We report on the clinical history of a 14-year-old boy with congenital ichthyosis, small stature, hypogonadism, facial dysmorphism, nystagmus, kypho-scoliosis and myogenic dystrophy. He was diagnosed as Rud syndrome but developed neither seizures nor mental retardation. However a cousin was mentally retarded. The ichthyosis was familial as five relatives had ichthyosis but no other features of Rud syndrome. The patient had a deletion of the steroid-sulfatase gene. He had neither chondrodysplasia punctata, nor Kallmann syndrome, two conditions which are part of the contiguous gene syndrome of the Xp22.3 region. Most case reports previously reported as Rud syndrome can now be reassigned under a contemporary ichthyosis classification that does not include Rud syndrome as a distinct entity. This case was clearly distinct from Refsum disease, Sjögren-Larsson syndrome and any of the other ichthyosis disorders that have been suggested as a replacement for Rud syndrome. Thus the case reported here appears distinct from any previously described, currently recognized syndrome.</p>","PeriodicalId":7908,"journal":{"name":"Annales de genetique","volume":"42 1","pages":"45-50"},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21084886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}