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Advances in Brief

Genetic Changes in Inherited and Sporadic Ovarian Carcinomas by Comparative Genomic Hybridization: Extensive Similarity Except for a Difference at Chromosome 2q24–q32

Johanna Tapper, Laura Sarantaus, Pia Vahteristo, Heli Nevanlinna, Samuli Hemmer, Markku Seppälä, Sakari Knuutila and Ralf Butzow
Johanna Tapper
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Laura Sarantaus
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Pia Vahteristo
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Heli Nevanlinna
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Samuli Hemmer
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Markku Seppälä
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Sakari Knuutila
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Ralf Butzow
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DOI:  Published July 1998
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Abstract

Germ-line mutations in the BRCA1 and BRCA2 genes confer a predisposition to breast as well as ovarian carcinoma. Except for loss of the respective wild-type allele, somatic genetic changes needed for the progression of inherited ovarian tumors are unknown. A genome-wide search for such alterations was performed by comparative genomic hybridization analysis on BRCA1 and BRCA2 mutation-positive (n = 20) ovarian carcinoma specimens. Comparison with sporadic ovarian carcinomas (n = 20) revealed extensive genetic similarity between the inherited and sporadic carcinomas with the sole exception of a frequent gain of 2q24–q32 in the inherited group, suggesting the presence of an oncogene at 2q24–q32 operating in the absence of BRCA1 function. The overall similarity of gains and losses by comparative genomic hybridization suggests a common main pathway in tumor progression of both inherited and sporadic ovarian carcinomas.

Footnotes

  • ↵1 Supported by grants from the Helsinki University Central Hospital Research Fund and the Helsingin Sanomat Fund.

  • ↵2 To whom requests for reprints should be addressed, at Department of Obstetrics and Gynecology, Helsinki University Central Hospital, Haartmaninkatu 2, 00290 Helsinki, Finland. Phone: 358-09-4714912; Fax: 358-09-4714801; E-mail: ralf.butzow@huch.fi.

  • Received March 3, 1998.
  • Accepted May 15, 1998.
  • ©1998 American Association for Cancer Research.
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July 1998
Volume 58, Issue 13
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Genetic Changes in Inherited and Sporadic Ovarian Carcinomas by Comparative Genomic Hybridization: Extensive Similarity Except for a Difference at Chromosome 2q24–q32
Johanna Tapper, Laura Sarantaus, Pia Vahteristo, Heli Nevanlinna, Samuli Hemmer, Markku Seppälä, Sakari Knuutila and Ralf Butzow
Cancer Res July 1 1998 (58) (13) 2715-2719;

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Genetic Changes in Inherited and Sporadic Ovarian Carcinomas by Comparative Genomic Hybridization: Extensive Similarity Except for a Difference at Chromosome 2q24–q32
Johanna Tapper, Laura Sarantaus, Pia Vahteristo, Heli Nevanlinna, Samuli Hemmer, Markku Seppälä, Sakari Knuutila and Ralf Butzow
Cancer Res July 1 1998 (58) (13) 2715-2719;
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