Cited by 698Connective tissue disorders researchDermatological and Skeletal DisordersBone Metabolism and Diseases

Identification of a 52 kb deletion downstream of the SOST gene in patients with van Buchem disease

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Balemans, W, Patel, N, Ebeling, M, Van Hul, E, Wuyts, W, Lacza, C, Dioszegi, M, Dikkers, F G +7 more·2002·Journal of Medical Genetics

Abstract

Van Buchem disease is an autosomal recessive skeletal dysplasia characterised by generalised bone overgrowth, predominantly in the skull and mandible. Clinical complications including facial nerve palsy, optic atrophy, and impaired hearing occur in most patients. These features are very similar to those of sclerosteosis and the two conditions are only differentiated by the hand malformations and the tall stature appearing in sclerosteosis. Using an extended Dutch inbred van Buchem family and two inbred sclerosteosis families, we mapped both disease genes to the same region on chromosome 17q12-q21, supporting the hypothesis that van Buchem disease and sclerosteosis are caused by mutations in the same gene. In a previous study, we positionally cloned a novel gene, called SOST, from the linkage interval and identified three different, homozygous mutations in the SOST gene in sclerosteosis patients leading to loss of function of the underlying protein. The present study focuses on the identification of a 52 kb deletion in all patients from the van Buchem family. The deletion, which results from a homologous recombination between Alu sequences, starts approximately 35 kb downstream of the SOST gene. Since no evidence was found for the presence of a gene within the deleted region, we hypothesise that the presence of the deletion leads to a down regulation of the transcription of the SOST gene by a cis regulatory action or a position effect.

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  1. Lopez AG, Pinero ML, Varo FM. Hiperostosis cortical generalizada (van Buchem). Rev Clin Esp 1985;177:293-4.
  2. Truswell AS. Osteopetrosis with syndactyly, a morphologic variant of Albers-Schönberg disease. J Bone Jt Surg Br 1958;40:208-18.
  3. Hansen HG. Sklerosteose. Handbuch Kinderheilkd 1967;6:351-5.
  4. Witkop CJ. Genetic diseases of the oral cavity. In: Tiecke RW, ed. Oral pathology. New York: McGraw-Hill 1965:834-43.
  5. Pietruscka G. Weitere Mitteilungen über die Marmorknochenkrankheit (Albers-Schönbergsche Krankheit) nebst Bemerkungen zur Differentialdiagnose. Klin Monatsbl Augenheilkd 1958;132:509-25.

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Authors
Balemans, W., Patel, N., Ebeling, M., Van Hul, E., Wuyts, W., Lacza, C., Dioszegi, M., Dikkers, F. G., Hildering, P., Willems, P. J., Verheij, J. B. G. M., Lindpaintner, K., Vickery, B., Foernzler, D., & Van Hul, W.
Affiliations
  • University of Antwerp (BE)
  • Roche (United States) (US)
  • F. Hoffmann-La Roche AG (CH)
  • University Medical Center Groningen (NL)
  • Erasmus University Rotterdam (NL)
Venue
Journal of Medical Genetics
Publisher
BMJ
Published
2002-02
Volume
39
Issue
2
Pages
91-97
ISSN
  • 0022-2593 (ISSN-L)
  • 1468-6244
OpenAlex
W2155377428
Cited by
698
References
37
Citations by year
2026: 10 · 2025: 10 · 2024: 22 · 2023: 17 · 2022: 23 · 2021: 30 · 2020: 42 · 2019: 36 · 2018: 39 · 2017: 41 · 2016: 46 · 2015: 56 · 2014: 41 · 2013: 47 · 2012: 38
FWCI
5.32
Type
journal article
Language
en
Open access
Locations
  • Journal of Medical Genetics (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • University of Groningen research database (University of Groningen / Centre for Information Technology) (submittedVersion)
Funders
  • Fonds Wetenschappelijk Onderzoek
  • Universiteit Antwerpen
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Connective tissue disorders research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Dermatological and Skeletal Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
Keywords
van Buchem disease, sclerosteosis, SOST gene, skeletal dysplasia, gene downregulation, positional cloning, autosomal recessive inheritance
MeSH terms
Aged, Base Sequence, Consanguinity, DNA Mutational Analysis, Female, Genetic Markers, Humans, Genetic Linkage, Male, Molecular Sequence Data, Osteochondrodysplasias, Proteins, Sequence Deletion, Bone Morphogenetic Proteins, Adaptor Proteins, Signal Transducing

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