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Arredondo Montero J, Bronte Anaut M, Ruiz de Azúa Y, Morales Garofalo L. Diaphanospondylodysostosis: Full Case Report with Novel Pathogenic BMPER Mutation. Pediatr Dev Pathol 2022; 25:321-326. [PMID: 34877902 DOI: 10.1177/10935266211056812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Diaphanospondylodysostosis is an extremely rare, recessively inherited, perinatal lethal skeletal disorder associated with BMPER gene mutations. Clinically it is characterized by defects in costovertebral ossification, absent ribs, hypertelorism, short nose with depressed nasal bridge, low-set ears, and short neck. At the extraosseous level, the most frequent pathologic finding is nephroblastomatosis with multicystic kidneys. We present the case of a child of non-consanguineous parents who died at 2 months of age in our center. Autopsy showed a marked costovertebral ossification defect, perilobar nephrogenic rests and loss of white matter with periventricular leukomalacia. After genetic study, the diagnosis of diaphanospondylodysostosis was confirmed. A previously undescribed germinal mutation in the BMPER gene (c.576 + 2dupT) was found.
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Affiliation(s)
| | - Mónica Bronte Anaut
- Department of Pathology, 83011Complejo Hospitalario de Navarra, Pamplona, Spain
| | - Yerani Ruiz de Azúa
- Department of Pathology, 83011Complejo Hospitalario de Navarra, Pamplona, Spain
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Chen TJ, Song R, Janssen A, Yosypiv IV. Cytogenomic aberrations in isolated multicystic dysplastic kidney in children. Pediatr Res 2022; 91:659-664. [PMID: 33790410 PMCID: PMC8481348 DOI: 10.1038/s41390-021-01476-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/08/2021] [Accepted: 03/07/2021] [Indexed: 02/01/2023]
Abstract
BACKGROUND Multicystic dysplastic kidney (MCDK) is a common form of congenital kidney anomaly. The cause of MCDK is unknown. We investigated whether MCDK in children is linked to cytogenomic aberrations. METHODS We conducted array comparative genomic hybridization (aCGH) in ten unrelated children with MCDK. The pattern of inheritance was determined by real-time PCR in patients and their biological parents. RESULTS Pathogenic aberrations were detected in three patients: a deletion at 7p14.3 with a size of 2.07 Mb housing 12 genes, including BBS9 (Bardet-Biedl syndrome 9) and BMPER (BMP binding endothelial regulator); a duplication at 16p13.11p12.3 with a size of 3.28 Mb that included >20 genes; and monosomy X for a female patient. The deletion at 7p14.3 was inherited from the patient's father, while the duplication at 16p13.11p12.3 was derived from the patient's mother. CONCLUSIONS Up to 30% of patients with MCDK possess cytogenomic aberrations. BBS9 and BMPER variants have been reported to result in cystic kidney dysplasia, suggesting a possible pathogenic function for the deletion at 7p14.3 in children with MCDK. The duplication at 16p13.11p12.3 was not reported previously to associate with MCDK. Both variations were inherited from parents, indicating hereditary contributions in MCDK. Thus, aCGH is an informative tool to unravel the pathogenic mechanisms of MCDK. IMPACT Cytogenomic aberrations are common in children with MCDK. Cytogenomic aberrations are inherited from parents, indicating hereditary contributions in MCDK. aCGH is a valuable tool to reveal pathogenic mechanisms of MCDK.
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Affiliation(s)
- Tian-Jian Chen
- Section of Pediatric Nephrology, Department of Pediatrics, Tulane University School of Medicine, New Orleans, LA 70112,Hayward Genetic Center, Tulane University School of Medicine, New Orleans, LA 70112
| | - Renfang Song
- Section of Pediatric Nephrology, Department of Pediatrics, Tulane University School of Medicine, New Orleans, LA 70112
| | - Adam Janssen
- Section of Pediatric Nephrology, Department of Pediatrics, Tulane University School of Medicine, New Orleans, LA 70112,Hayward Genetic Center, Tulane University School of Medicine, New Orleans, LA 70112
| | - Ihor V. Yosypiv
- Section of Pediatric Nephrology, Department of Pediatrics, Tulane University School of Medicine, New Orleans, LA 70112
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Braun F, Gangfuß A, Stöbe P, Haack TB, Schweiger B, Roos A, Schara U. Expansion of the mutational spectrum of BMPER leading to diaphanospondylodysostosis and description of the associated disease process. Mol Genet Genomic Med 2021; 9:e1767. [PMID: 34288564 PMCID: PMC8683618 DOI: 10.1002/mgg3.1767] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 05/25/2021] [Accepted: 07/08/2021] [Indexed: 11/25/2022] Open
Abstract
Background Diaphanospondylodysostosis (DSD) is a rare congenital, lethal skeletal disorder caused by recessively inherited mutations in the BMPER gene, which encodes the bone morphogenetic protein‐binding endothelial cell precursor‐derived regulator. The most prominent features of DSD are missing ossification of the axial skeleton, rib abnormalities and thoracic hypoplasia/insufficiency, as well as intralobar nephrogenic rests within the kidneys. Methods We report on the case of a 22‐month‐old patient with DSD where trio‐exome sequencing was performed. Results Genetic testing revealed a homozygous nonsense variant c.1577G>A (p.Trp526*) in the BMPER gene, leading to a premature stop in protein translation. Both parents are asymptomatic carriers for the BMPER variant, which has not been described in the literature before. Conclusions Our findings expand the genotypic and phenotypic spectrum of BMPER variants leading to DSD.
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Affiliation(s)
- Frederik Braun
- Department of Neuropediatrics, Essen University Hospital, Essen, Germany
| | - Andrea Gangfuß
- Department of Neuropediatrics, Essen University Hospital, Essen, Germany
| | - Petra Stöbe
- Institute of Medical Genetics and Applied Genomics, University of Tuebingen, Tübingen, Germany
| | - Tobias B Haack
- Institute of Medical Genetics and Applied Genomics, University of Tuebingen, Tübingen, Germany.,Centre for Rare Diseases, University of Tuebingen, Tübingen, Germany
| | - Bernd Schweiger
- Institute for Diagnostic and Interventional Radiology and Neuroradiology, Essen University Hospital, Essen, Germany
| | - Andreas Roos
- Department of Neuropediatrics, Essen University Hospital, Essen, Germany
| | - Ulrike Schara
- Department of Neuropediatrics, Essen University Hospital, Essen, Germany
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Greenbaum L, Gilboa Y, Raas-Rothschild A, Barel O, Kol N, Reznik-Wolf H, Pode-Shakked B, Finezilber Y, Messing B, Berkenstadt M. Diaphanospondylodysostosis: Refining the prenatal diagnosis of a rare skeletal disorder. Eur J Med Genet 2018; 62:167-171. [PMID: 30006055 DOI: 10.1016/j.ejmg.2018.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 04/22/2018] [Accepted: 07/09/2018] [Indexed: 02/06/2023]
Abstract
Diaphanospondylodysostosis (DSD) is a rare autosomal recessive skeletal disorder, characterized mainly by ossification defects in vertebrae, thorax malformations, renal cystic dysplasia and usually death in the perinatal period. DSD is caused by mutations in the bone morphogenetic protein-binding endothelial regulator (BMPER) gene. We describe the prenatal findings of a non-consanguineous Jewish couple (shared Balkan origin), with three affected fetuses that presented with malformations in the spine and chest, reduced ossification of the skull and spine, horseshoe kidney and increased nuchal translucency. The unique combination of these ultrasound (US) features raised the possibility of DSD, which was confirmed by whole exome sequencing (WES) performed on a single fetal DNA and familial segregation. In the three fetuses, a novel homozygous mutation in BMPER (c.410T > A; p.Val137Asp) was found. This mutation, which segregated in the family, was not found in 65 controls of Jewish Balkan origin, and in several large databases. Taken together, the combination of a detailed prenatal US examination and WES may be highly effective in confirming the diagnosis of a rare genetic disease, in this case DSD.
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Affiliation(s)
- Lior Greenbaum
- The Danek Gertner Institute of Human Genetics, Sheba Medical Center, Tel Hashomer, Israel; The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yinon Gilboa
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Obstetrics and Gynecology, Sheba Medical Center, Tel Hashomer, Israel
| | - Annick Raas-Rothschild
- The Danek Gertner Institute of Human Genetics, Sheba Medical Center, Tel Hashomer, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Institute of Rare Diseases, Sheba Medical Center, Tel Hashomer, Israel
| | - Ortal Barel
- The Genomic Unit, Sheba Cancer Research Center, Sheba Medical Center, Tel Hashomer, Israel; The Wohl Institute for Translational Medicine, Sheba Medical Center, Tel Hashomer, Israel
| | - Nitzan Kol
- The Genomic Unit, Sheba Cancer Research Center, Sheba Medical Center, Tel Hashomer, Israel; The Wohl Institute for Translational Medicine, Sheba Medical Center, Tel Hashomer, Israel
| | - Haike Reznik-Wolf
- The Danek Gertner Institute of Human Genetics, Sheba Medical Center, Tel Hashomer, Israel
| | - Ben Pode-Shakked
- The Danek Gertner Institute of Human Genetics, Sheba Medical Center, Tel Hashomer, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yael Finezilber
- The Danek Gertner Institute of Human Genetics, Sheba Medical Center, Tel Hashomer, Israel
| | - Baruch Messing
- Department of Obstetrics and Gynecology, Sheba Medical Center, Tel Hashomer, Israel
| | - Michal Berkenstadt
- The Danek Gertner Institute of Human Genetics, Sheba Medical Center, Tel Hashomer, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
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Hofstaetter C, Courage C, Bartholdi D, Biskup S, Raio L. Prenatal diagnosis of diaphanospondylodysostosis (DSD): a case report. Clin Case Rep 2018; 6:420-425. [PMID: 29445489 PMCID: PMC5799658 DOI: 10.1002/ccr3.1368] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 07/17/2017] [Accepted: 08/25/2017] [Indexed: 11/21/2022] Open
Abstract
We present a case of diaphanospondylodysostosis (DSD) which showed increased nuchal translucency at 1st trimester and missing ossification of the lower spine, short ribs with posterior gaps, and absent nasal bone in midtrimester. Autopsy revealed additionally bilateral nephroblastomatosis. Molecular genetic analysis showed a new mutation in the BMPER gene.
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Affiliation(s)
- Cornelia Hofstaetter
- Department of Obstetrics & Gynecology Inselspital University of Bern Switzerland
| | - Carolina Courage
- Division of Human Genetics Department of Pediatrics Inselspital University of Bern Switzerland.,The Folkhälsan Institute of Genetics University of Helsinki Helsinki Finland
| | - Deborah Bartholdi
- Division of Human Genetics Department of Pediatrics Inselspital University of Bern Switzerland
| | - Saskia Biskup
- Praxis für Humangenetik Paul-Ehrlich-Strasse 22 DE 72076 Tübingen Germany
| | - Luigi Raio
- Department of Obstetrics & Gynecology Inselspital University of Bern Switzerland
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Legare JM, Seaborg K, Laffin J, Giampietro PF. Diaphanospondylodysostosis and ischiospinal dysostosis, evidence for one disorder with variable expression in a patient who has survived to age 9 years. Am J Med Genet A 2017; 173:2808-2813. [DOI: 10.1002/ajmg.a.38395] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 07/18/2017] [Indexed: 01/05/2023]
Affiliation(s)
- Janet M. Legare
- Department of PediatricsUniversity of WisconsinMadisonWisconsin
| | - Kristin Seaborg
- Meriter Medical GroupMadisonWisconsin
- Department of NeurologyUniversity of WisconsinMadisonWisconsin
| | - Jennifer Laffin
- Department of Pediatrics and PathologyUniversity of WisconsinMadisonWisconsin
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Kuchinskaya E, Grigelioniene G, Hammarsjö A, Lee HR, Högberg L, Grigelionis G, Kim OH, Nishimura G, Cho TJ. Extending the phenotype of BMPER-related skeletal dysplasias to ischiospinal dysostosis. Orphanet J Rare Dis 2016; 11:1. [PMID: 26728142 PMCID: PMC4700746 DOI: 10.1186/s13023-015-0380-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 12/17/2015] [Indexed: 11/10/2022] Open
Abstract
Ischiospinal dysostosis (ISD) is a polytopic dysostosis characterized by ischial hypoplasia, multiple segmental anomalies of the cervicothoracic spine, hypoplasia of the lumbrosacral spine and occasionally associated with nephroblastomatosis. ISD is similar to, but milder than the lethal/semilethal condition termed diaphanospondylodysostosis (DSD), which is associated with homozygous or compound heterozygous mutations of bone morphogenetic protein-binding endothelial regulator protein (BMPER) gene. Here we report for the first time biallelic BMPER mutations in two patients with ISD, neither of whom had renal abnormalities. Our data supports and further extends the phenotypic variability of BMPER-related skeletal disorders.
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Affiliation(s)
- Ekaterina Kuchinskaya
- Department of Clinical Pathology and Clinical Genetics, and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Giedre Grigelioniene
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden. .,Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden.
| | - Anna Hammarsjö
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Hye-Ran Lee
- Division of Pediatric Orthopaedics, Seoul National University Children's Hospital, Seoul, Republic of Korea
| | - Lotta Högberg
- Department of Paediatrics and Department of Clinical and Experimental Medicine, Linköping University, Norrköping, Sweden
| | - Gintautas Grigelionis
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Ok-Hwa Kim
- Department of Radiology, Woorisoa Children's Hospital, Seoul, Republic of Korea
| | - Gen Nishimura
- Department of Pediatric Imaging, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Tae-Joon Cho
- Department of Paediatrics and Department of Clinical and Experimental Medicine, Linköping University, Norrköping, Sweden.
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8
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BMPER variants associated with a novel, attenuated subtype of diaphanospondylodysostosis. J Hum Genet 2015; 60:743-7. [PMID: 26467725 DOI: 10.1038/jhg.2015.116] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 08/15/2015] [Accepted: 08/21/2015] [Indexed: 11/09/2022]
Abstract
Diaphanospondylodysostosis (DSD), caused by loss of bone morphogenetic protein-binding endothelial regulator (BMPER), has been considered a lethal skeletal dysplasia characterized by severe deficiency of vertebral body and sacral ossification, reduced rib number and cystic kidneys. In this study, however, we have demonstrated that variants in BMPER may cause a milder disorder, without renal anomalies, that is compatible with long-term survival. Four siblings, three males and one female, presented with severe congenital scoliosis associated with rib and vertebral malformations as well as strikingly delayed ossification of the pedicles. The female was stillborn from an unrelated cause. Stabilization of the scoliosis with expandable titanium rods was successful in the three boys, all of whom have short stature. An autosomal recessive mode of inheritance was hypothesized. Single nucleotide polymorphism microarray analysis was performed for three of the siblings to identify autosomal genes with shared allele patterns, suggesting possible linkage. Exome sequencing of one sibling was then performed. Rare variants were identified in 347 genes with shared alleles. Only one of these genes had bi-allelic variants in a gene strongly expressed in paraxial mesenchyme: BMPER, which is the cause of DSD, an autosomal recessive disorder. The disorder described herein could represent an attenuated form of DSD or could be designated a separate entity such as spondylopedicular dysplasia.
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9
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Khodair SA, Hassanen OA. Abnormalities of fetal rib number and associated fetal anomalies using three dimensional ultrasonography. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2014. [DOI: 10.1016/j.ejrnm.2014.03.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Development of anaplastic Wilms tumor and subsequent relapse in a child with diaphanospondylodysostosis. J Pediatr Hematol Oncol 2012; 34:548-51. [PMID: 22469945 PMCID: PMC3394881 DOI: 10.1097/mph.0b013e3182465b58] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Diaphanospondylodysostosis (DSD) is a rare skeletal dysplasia syndrome resulting from disordered mesenchymal differentiation. Children with DSD generally die in utero or during the first month of life from severe thoracic insufficiency syndrome. An association of DSD with nephroblastomatosis has been observed, but the natural history of such nephroblastomatosis remains poorly characterized due to the rarity of the underlying condition. We describe a patient with DSD who developed bilateral hyperplastic nephroblastomatosis that ultimately evolved into therapy-resistant anaplastic Wilms tumor (nephroblastoma).
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Scottoline B, Rosenthal S, Keisari R, Kirpekar R, Angell C, Wallerstein R. Long-term survival with diaphanospondylodysostosis (DSD): Survival to 5 years and further phenotypic characteristics. Am J Med Genet A 2012; 158A:1447-51. [DOI: 10.1002/ajmg.a.35352] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Accepted: 01/30/2012] [Indexed: 11/11/2022]
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12
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Ben-Neriah Z, Michaelson-Cohen R, Inbar-Feigenberg M, Nadjari M, Zeligson S, Shaag A, Zenvirt S, Elpeleg O, Levy-Lahad E. A deleterious founder mutation in the BMPER gene causes diaphanospondylodysostosis (DSD). Am J Med Genet A 2011; 155A:2801-6. [DOI: 10.1002/ajmg.a.34240] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2011] [Accepted: 07/07/2011] [Indexed: 11/08/2022]
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13
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Funari VA, Krakow D, Nevarez L, Chen Z, Funari TL, Vatanavicharn N, Wilcox WR, Rimoin DL, Nelson SF, Cohn DH. BMPER mutation in diaphanospondylodysostosis identified by ancestral autozygosity mapping and targeted high-throughput sequencing. Am J Hum Genet 2010; 87:532-7. [PMID: 20869035 DOI: 10.1016/j.ajhg.2010.08.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2010] [Revised: 08/23/2010] [Accepted: 08/30/2010] [Indexed: 10/19/2022] Open
Abstract
Diaphanospondylodysostosis (DSD) is a rare, recessively inherited, perinatal lethal skeletal disorder. The low frequency and perinatal lethality of DSD makes assembling a large set of families for traditional linkage-based genetic approaches challenging. By searching for evidence of unknown ancestral consanguinity, we identified two autozygous intervals, comprising 34 Mbps, unique to a single case of DSD. Empirically testing for ancestral consanguinity was effective in localizing the causative variant, thereby reducing the genomic space within which the mutation resides. High-throughput sequence analysis of exons captured from these intervals demonstrated that the affected individual was homozygous for a null mutation in BMPER, which encodes the bone morphogenetic protein-binding endothelial cell precursor-derived regulator. Mutations in BMPER were subsequently found in three additional DSD cases, confirming that defects in BMPER produce DSD. Phenotypic similarities between DSD and Bmper null mice indicate that BMPER-mediated signaling plays an essential role in vertebral segmentation early in human development.
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Hershkovitz R. Prenatal diagnosis of isolated abnormal number of ribs. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2008; 32:506-509. [PMID: 18537105 DOI: 10.1002/uog.5296] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
OBJECTIVE To determine the incidence of prenatal isolated abnormal number of ribs, using three-dimensional (3D) ultrasound. METHODS This was a prospective study of low-risk women with singleton pregnancy and normal fetal anatomy scan. 3D examinations of the fetal ribs were carried out at the time of the routine anomaly scan at 14-16 or 20-24 weeks of gestation. A 3D volume of the spine was acquired with a mechanical sweep that lasted between 2 and 4 s per volume and was performed when the fetus had a minimally flexed head position. Fetal ribs were reviewed on the rendered image (maximal mode), both while the patient was in the clinic and again later. RESULTS Three hundred and sixty-seven pregnant women were evaluated. Twenty-three (6.3%) fetuses were found to have an abnormal number of ribs. Fifteen (4.1%) had 11 ribs unilaterally, with the last (12(th)) rib missing. One patient (0.27%) had 13 ribs unilaterally (with a small extra rib after the last rib). Two (0.5%) patients had 13 ribs bilaterally with an extra rib after the 12(th) rib on each side and two (0.5%) patients had 13 ribs bilaterally with an extra cervical rib on each side. Three (0.8%) patients had an extra unilateral cervical rib. In all, 1.4% of patients had extra cervical ribs. CONCLUSIONS The incidence of abnormal number of ribs in this normal population was 6.3%. When isolated, this finding is a normal variant.
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Affiliation(s)
- R Hershkovitz
- Department of Obstetrics and Gynecology, Faculty of Health Sciences, Ultrasound Unit, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
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Vatanavicharn N, Graham JM, Curry CJ, Pepkowitz S, Lachman RS, Rimoin DL, Wilcox WR. Diaphanospondylodysostosis: six new cases and exclusion of the candidate genes, PAX1 and MEOX1. Am J Med Genet A 2008; 143A:2292-302. [PMID: 17764081 DOI: 10.1002/ajmg.a.31934] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We report on six cases from four families with the newly described skeletal disorder diaphanospondylodysostosis (DSD). The characteristic radiographic findings included abnormal ossification of vertebral bodies, posterior rib gaps, missing ribs, and a downward tilt of the pubic rami, but normal long bones. The typical facial features of DSD cases were ocular hypertelorism, a short nose, depressed nasal bridge, and low set ears. Other distinctive findings included a short neck with bell-shaped thorax, and nephroblastomatosis. A history of consanguinity and affected siblings with unaffected parents supports autosomal recessive inheritance. Skeletal histology showed incomplete ossification of the ribs, vertebral bodies, and sacrum as well as incomplete formation of intervertebral discs. The posterior ribs were comprised of bone with intervening cartilage interrupted by dense fibrous tissue and skeletal muscle fascicles. These findings suggest abnormal development and differentiation of the paraxial mesoderm. Because of phenotypic similarities of DSD to Pax1 and Meox1 deficient mice, we sequenced genomic DNA from three unrelated DSD cases. No mutations were identified in the PAX1 and MEOX1 exons or flanking intronic sequences, excluding them as likely causative genes.
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Lachman RS. S. TAYBI AND LACHMAN'S RADIOLOGY OF SYNDROMES, METABOLIC DISORDERS AND SKELETAL DYSPLASIAS 2007. [PMCID: PMC7315357 DOI: 10.1016/b978-0-323-01931-6.50027-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Souka AP, Von Kaisenberg CS, Hyett JA, Sonek JD, Nicolaides KH. Increased nuchal translucency with normal karyotype. Am J Obstet Gynecol 2005; 192:1005-21. [PMID: 15846173 DOI: 10.1016/j.ajog.2004.12.093] [Citation(s) in RCA: 243] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Increased fetal nuchal translucency (NT) thickness between 11 and 14 weeks' gestation is a common phenotypic expression of chromosomal abnormalities, including trisomy 21. However, even in the absence of aneuploidy, nuchal thickening is clinically relevant because it is associated with an increase in adverse perinatal outcome caused by a variety of fetal malformations, dysplasias, deformations, dysruptions, and genetic syndromes. Once the presence of aneuploidy is ruled out, the risk of perinatal outcome dose not statistically increase until the nuchal translucency measurement reaches 3.5 mm or more (>99th percentile). This increase in risk occurs in an exponential fashion as the NT measurement increases. However, if the fetus survives until midgestation, and if a targeted ultrasound at 20 to 22 weeks fails to reveal any abnormalities, the risk of an adverse perinatal outcome and postnatal developmental delay is not statistically increased.
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Affiliation(s)
- Athena P Souka
- Harris Birthright Research Centre for Fetal Medicine, King's College, London University, London, UK
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Gonzales M, Verloes A, Saint Frison MH, Perrotez C, Bourdet O, Encha-Razavi F, Joyé N, Taillemite JL, Walbaum R, Pfeiffer R, Maroteaux P. Diaphanospondylodysostosis (DSD): Confirmation of a recessive disorder with abnormal vertebral ossification and nephroblastomatosis. Am J Med Genet A 2005; 136A:373-6. [PMID: 15988748 DOI: 10.1002/ajmg.a.30537] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We report on four patients from three families, with similar radiological findings: absent (or severely delayed) ossification of vertebral bodies and associated anomalies. The babies were stillborn or died soon after birth of respiratory insufficiency. Two patients are sibs (female and male) born to first cousin Malian parents. The two others were non-consanguineous. This perinatally lethal entity comprises short neck, short wide thorax, and normally shaped limbs. Associated, inconstant anomalies are myelomeningocele, cystic kidneys with nephrogenic rests (in the sibs), and cleft palate. Radiologically, the hallmarks are absence of ossification of the vertebral bodies and sacrum, abnormal position of the vertebral pedicles, which are lamellar and angulated, ribbon-like ribs reduced in number, narrow pelvis, upward widening of the iliac wings, and unusual tilt of the ischiopubic rami, contrasting with the normal appendicular skeleton. Maroteaux briefly described one of the patients in the 2002 edition of "Maladies osseuses de l'enfant" and three sibs with similar renal and radiological findings were reported in 2003 in this Journal. Combined with the latter cases, these four new patients allow delineation of a specific lethal AR syndrome with ossification defect of the axial skeleton and renal dysplasia. We propose to name this entity diaphanospondylodysostosis.
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Affiliation(s)
- Marie Gonzales
- Department of Pathologic Embryology and Cytogenetics, Hôpital Saint Antoine, Paris, France
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Current awareness in prenatal diagnosis. Prenat Diagn 2003. [DOI: 10.1002/pd.535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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