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Browsing by Author "Boban, Ljubica"

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  • Epidemiology of achondroplasia: a population‐based study in Europe
    Publication . Coi, Alessio; Santoro, Michele; Garne, Ester; Pierini, Anna; Addor, Marie‐Claude; Alessandri, Jean‐Luc; Bergman, Jorieke E.H.; Bianchi, Fabrizio; Boban, Ljubica; Braz, Paula; Cavero‐Carbonell, Clara; Gatt, Miriam; Haeusler, Martin; Klungsøyr, Kari; Kurinczuk, Jennifer J.; Lanzoni, Monica; Lelong, Nathalie; Luyt, Karen; Mokoroa, Olatz; Mullaney, Carmel; Nelen, Vera; Neville, Amanda J.; O'Mahony, Mary T.; Perthus, Isabelle; Rankin, Judith; Rissmann, Anke; Rouget, Florence; Schaub, Bruno; Tucker, David; Wellesley, Diana; Wisniewska, Katarzyna; Zymak‐Zakutnia, Nataliia; Barišić, Ingeborg
    Achondroplasia is a rare genetic disorder resulting in short-limb skeletal dysplasia. We present the largest European population-based epidemiological study to date using data provided by the European Surveillance of Congenital Anomalies (EUROCAT) network. All cases of achondroplasia notified to 28 EUROCAT registries (1991-2015) were included in the study. Prevalence, birth outcomes, prenatal diagnosis, associated anomalies, and the impact of paternal and maternal age on de novo achondroplasia were presented. The study population consisted of 434 achondroplasia cases with a prevalence of 3.72 per 100,000 births (95%CIs: 3.14-4.39). There were 350 live births, 82 terminations of pregnancy after prenatal diagnosis, and two fetal deaths. The prenatal detection rate was significantly higher in recent years (71% in 2011-2015 vs. 36% in 1991-1995). Major associated congenital anomalies were present in 10% of cases. About 20% of cases were familial. After adjusting for maternal age, fathers >34 years had a significantly higher risk of having infants with de novo achondroplasia than younger fathers. Prevalence was stable over time, but regional differences were observed. All pregnancy outcomes were included in the prevalence estimate with 80.6% being live born. The study confirmed the increased risk for older fathers of having infants with de novo achondroplasia.
    2019-07-11Journal article Restricted access Show more
  • Epidemiology of Dandy-Walker Malformation in Europe: A EUROCAT Population-Based Registry Study
    Publication . Santoro, Michele; Coi, Alessio; Barišić, Ingeborg; Garne, Ester; Addor, Marie-Claude; Bergman, Jorieke E.H.; Bianchi, Fabrizio; Boban, Ljubica; Braz, Paula; Cavero-Carbonell, Clara; Gatt, Miriam; Haeusler, Martin; Kinsner-Ovaskainen, Agnieszka; Klungsøyr, Kari; Kurinczuk, Jennifer J.; Lelong, Nathalie; Luyt, Karen; Materna-Kiryluk, Anna; Mokoroa, Olatz; Mullaney, Carmel; Nelen, Vera; Neville, Amanda Julie; O’Mahony, Mary T.; Perthus, Isabelle; Randrianaivo, Hanitra; Rankin, Judith; Rissmann, Anke; Rouget, Florence; Schaub, Bruno; Tucker, David; Wellesley, Diana; Yevtushok, Lyubov; Pierini, Anna
    Background: Dandy-Walker (DW) malformation is a rare and severe congenital anomaly of the posterior fossa affecting the development of the cerebellum and the fourth ventricle. Objective: The aim of this study was to investigate the epidemiology of DW malformation, using data from the European population-based registries of congenital anomalies in the European Surveillance of Congenital Anomalies network. Methods: Anonymous individual data on cases of DW malformation diagnosed in 2002-2015 from 28 registries in 17 countries were included. Prevalence, prenatal detection rate, proportions and types of associated anomalies were estimated. Cases of DW variant were considered and analysed separately. Results: Out of 8,028,454 surveyed births we identified a total of 734 cases, including 562 DW malformation cases and 172 DW variant cases. The overall prevalence of DW malformation was 6.79 per 100,000 births (95% CI 5.79-7.96) with 39.2% livebirths, 4.3% foetal deaths from 20 weeks gestational age, and 56.5% terminations of pregnancy after prenatal diagnosis of foetal anomaly at any gestation (TOPFA). The livebirth prevalence was 2.74 per 100,000 births (95% CI 2.08-3.61). The prenatal detection rate was 87.6%. Two-hundred and seventy-three cases (48.6%) had an isolated cerebral anomaly and 24.2, 19.2 and 5.5% cases were associated with other structural non-cerebral anomalies, chromosomal anomalies and genetic syndromes respectively. The prevalence of DW variant was 2.08 per 100,000 (95% CI 1.39-3.13). Conclusions: This European population-based study provides the epidemiological profile of DW malformation. All birth outcomes were analysed and TOPFA represented more than half of the cases. About 50% of the cases of DW malformation were associated with other non-cerebral anomalies. Large populations and all birth outcomes are essential in epidemiological studies of rare and severe congenital anomalies.
    2019-07-12Journal article Restricted access Show more
  • Epidemiology of Pierre‐Robin sequence in Europe: A population‐based EUROCAT study
    Publication . Santoro, Michele; Coi, Alessio; Barišić, Ingeborg; Pierini, Anna; Addor, Marie‐Claude; Baldacci, Silvia; Ballardini, Elisa; Boban, Ljubica; Braz, Paula; Cavero‐Carbonell, Clara; Walle, Hermien E.K.; Draper, Elizabeth S.; Gatt, Miriam; Haeusler, Martin; Klungsøyr, Kari; Kurinczuk, Jennifer J.; Materna‐Kiryluk, Anna; Lanzoni, Monica; Lelong, Nathalie; Luyt, Karen; Mokoroa, Olatz; Mullaney, Carmel; Nelen, Vera; O’Mahony, Mary T.; Perthus, Isabelle; Randrianaivo, Hanitra; Rankin, Judith; Rissmann, Anke; Rouget, Florence; Schaub, Bruno; Tucker, David; Wellesley, Diana; Zymak‐Zakutnia, Nataliia; Garne, Ester
    Background: Pierre Robin sequence (PRS) is a rare congenital anomaly. Respiratory disorders and feeding difficulties represent the main burden. Objective: The aim of this study was to investigate the epidemiology of PRS using a cohort of cases from EUROCAT, the European network of population-based registries of congenital anomalies. Methods: We analysed cases of PRS born in the period 1998-2017 collected by 29 population-based congenital anomaly registries in 17 different countries. We calculated prevalence estimates, prenatal detection rate, survival up to 1 week, and proportions of associated anomalies. The effect of maternal age was tested using a Poisson regression model. Results: Out of 11 669 155 surveyed births, a total of 1294 cases of PRS were identified. The estimate of the overall prevalence was 12.0 per 100 000 births (95% CI 9.9, 14.5). There was a total of 882 (68.2%) isolated cases, and the prevalence was 7.8 per 100 000 births (95% CI 6.7, 9.2). A total of 250 cases (19.3%) were associated with other structural congenital anomalies, 77 cases (6.0%) were associated with chromosomal anomalies and 77 (6.0%) with genetic syndromes. The prenatal detection rate in isolated cases was 12.0% (95% CI 9.8, 14.5) and increased to 16.0% (95% CI 12.7, 19.7) in the sub-period 2008-2017. The prevalence rate ratio of non-chromosomal cases with maternal age ≥35 was higher than in cases with maternal age <25 for total (PRR 1.26, 95% CI 1.05, 1.51) and isolated cases (PRR 1.33, 95% CI 1.00, 1.64). Survival of chromosomal cases (94.2%) and multiple anomaly cases (95.3%) were lower than survival of isolated cases (99.4%). Conclusions: This epidemiological study using a large series of cases of PRS provides insights into the epidemiological profile of PRS in Europe. We observed an association with higher maternal age, but further investigations are needed to test potential risk factors for PRS.
    2021-06-16Journal article Restricted access Show more
  • Holt Oram syndrome: a registry-based study in Europe
    Publication . Barisic, Ingeborg; Boban, Ljubica; Greenlees, Ruth; Garne, Ester; Wellesley, Diana; Calzolar, Elisa; Addor, Marie-Claude; Arriola, Larraitz; Bergman, Jorieke EH; Braz, Paula; Judith LS Budd, Budd; Miriam, Gatt; Martin, Haeusler; Babak, Khoshnood; Kari, Klungsoy; Bob, McDonnell; Vera, Nelen; Anna, Pierini; Annette, Queisser-Wahrendorf; Judith, Rankin; Anke, Rissmann; Catherine, Rounding; David, Tucker; Christine, Verellen-Dumoulin; Helen, Dolk
    Background: Holt-Oram syndrome (HOS) is an autosomal dominant disorder characterised by upper limb anomalies and congenital heart defects. We present epidemiological and clinical aspects of HOS patients using data from EUROCAT (European Surveillance of Congenital Anomalies) registries. Methods:The study was based on data collected during 1990–2011 by 34 registries. The registries are population based and use multiple sources of information to collect data on all types of birth using standardized definitions,methodology and coding. Diagnostic criteria for inclusion in the study were the presence of radial ray abnormalities and congenital heart disease (CHD), or the presence of either radial ray anomaly or CHD, with family history of HOS. Results: A total of 73 cases of HOS were identified, including 11 (15.1%) TOPFA and 62 (84.9%) LB. Out of 73 HOS cases, 30.8%(20/65) were suspected prenatally, 55.4% (36/65) at birth, 10.7% (7/65) in the first week of life, and 3.1%(2/65) in the first year of life. The prenatal detection rate was 39.2% (20/51), with no significant change over the study period. In 55% (11/20) of prenatally detected cases, parents decided to terminate pregnancy. Thumb anomalies were reported in all cases. Agenesis/hypoplasia of radius was present in 49.2% (30/61), ulnar aplasia/ hypoplasia in 24.6% (15/61) and humerus hypoplasia/phocomelia in 42.6% (26/61) of patients. Congenital heart defects (CHD) were recorded in 78.7% (48/61) of patients. Isolated septal defects were present in 54.2 (26/48), while 25% (12/48) of patients had complex/severe CHD. The mean prevalence of HOS diagnosed prenatally or in the early years of life in European registries was 0.7 per 100,000 births or 1:135,615 births. Conclusions: HOS is a rare genetic condition showing regional variation in its prevalence. It is often missed prenatally, in spite of the existence of major structural anomalies. When discovered, parents in 45% (9/20) of cases opt for the continuation of pregnancy. Although a quarter of patients have severe CHD, the overall first week survival is very good, which is important information for counselling purposes.
    2014-10-25Journal article Open access Show more
  • Meckel–Gruber Syndrome: a population-based study on prevalence, prenatal diagnosis, clinical features, and survival in Europe
    Publication . Barisc, Ingeborg; Boban, Ljubica; Loane, Maria; Garne, Ester; Wellesley, Diana; Calzolari, Elisa; Dolk, Helen; Addor, Marie-Claude; Bergman, Jorieke E.H.; Braz, Paula; Draper, Elizabeth S.; Haeusler, Martin; Khoshnood, Babak; Klungsoyr, Kari; Pierini, Anna; Queisser-Luft, Annette; Rankin, Judith; Rissmann, Anke; Verellen-Dumoulin, Christine
    Meckel–Gruber Syndrome is a rare autosomal recessive lethal ciliopathy characterized by the triad of cystic renal dysplasia,occipital encephalocele and postaxial polydactyly. We present the largest population-based epidemiological study to date using data provided by the European Surveillance of Congenital Anomalies (EUROCAT) network. The study population consisted of 191 cases of MKS identified between January 1990 and December 2011 in 34 European registries. The mean prevalence was 2.6 per 100 000 births in a subset of registries with good ascertainment. The prevalence was stable over time, but regional differences were observed. There were 145 (75.9%) terminations of pregnancy after prenatal diagnosis, 13 (6.8%) fetal deaths, 33 (17.3%) live births. In addition to cystic kidneys (97.7%), encephalocele (83.8%) and polydactyly(87.3%), frequent features include other central nervous system anomalies (51.4%), fibrotic/cystic changes of the liver (65.5%) of cases with post mortem examination) and orofacial clefts (31.8%). Various other anomalies were present in 64 (37%) patients. As nowadays most patients are detected very early in pregnancy when liver or kidney changes may not yet be developed or may be difficult to assess, none of the anomalies should be considered obligatory for the diagnosis. Most cases (90.2%) are diagnosed prenatally at 14.3±2.6 (range 11–36) gestational weeks and pregnancies are mainly terminated, reducing the number of LB to one-fifth of the total prevalence rate. Early diagnosis is important for timely counseling of affected couples regarding the option of pregnancy termination and prenatal genetic testing in future pregnancies.
    2015-06Journal article Restricted access Show more