Abstract：
:Germline mutations in the BRCA1 and BRCA2 genes are required for the initiation of the development of hereditary forms of breast and ovarian cancer, which represent 10-15% of all cases. The course of the disease varies from case to case that can be due even to the possibility of multiple genetic changes including inactivation of other tumor suppressor genes--TP53 and APC genes or activation of oncogenes, especially K-ras oncogene. The combination of these changes results in an early expression of the broad variety of malignancies. The analyzed proband (II-5) comes from a high-risk family, in which various types of cancer were observed. The novel BRCA1 mutation in exon 11 (2057delCAGTGAAGAG) was detected by SSCP, HDA techniques and confirmed by automatic sequencing. The same deletion was observed in DNA sample of her first daughter (III-1), but DNA of her second one was without any mutational changes (III-2). Due to the occurrence of different types of cancer in this family, the incidental mutations in the APC; resp. TP53 tumor supressor genes and K-ras oncogene were searched as well. Any mutation was found after sequencing of SSCP interesting exons of these genes. The reasons for such strong malignant manifestation in this high risk family are discussed.
journal_name
Neoplasmajournal_title
Neoplasmaauthors
Cierniková S,Tomka M,Sedláková O,Reinerová M,Stevurková V,Kovác M,Cente M,Ilenciková D,Bella V,Zajac Vsubject
Has Abstractpub_date
2003-01-01 00:00:00pages
403-7issue
6eissn
0028-2685issn
1338-4317journal_volume
50pub_type
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