Breast cancer associated with BRCA1 and BRCA2 gene mutations differs from non-BRCA tumors in several respects. We determined whether there was any difference in CCND1 (11q13) and ZNF217 (20q13) gene amplification with respect to BRCA status. Of 40 breast cancer samples examined, 15 and 9 were from BRCA1 and BRCA2 mutation carriers, respectively, and 16 from patients without mutation. Fluorescence in situ hybridization showed that eight tumors exhibited CCND1 amplification (20%; 3 BRCA1, 3 BRCA2, 2 non-BRCA). ZNF217 amplification was observed in three of 38 cases (8%; 2 BRCA1, 1 non-BRCA). There was no significant difference in CCND1 and ZNF217 amplification between BRCA1, BRCA2 and non-BRCA tumors. CCND1 amplification was associated with decreased disease-free (P = 0.045) and overall survival (P = 0.015). BRCA1 tumors with CCND1 amplification were estrogen receptor negative, in contrast to CCND1 amplified BRCA2 and non-BRCA tumors, suggesting that concurrent CCND1 amplification and estrogen and progesterone receptor negativity may predict germline BRCA1 gene mutation. All ZNF217 amplified tumors were of the medullary histological type (P = 0.002). There was no statistical correlation between CCND1 and ZNF217 amplification and estrogen receptor, progesterone receptor, and ERBB2 expression and TNM classification. CCND1 amplification did not correlate with EGFR expression.

• MeSH
• amplifikace genu MeSH
• cyklin D1 genetika   MeSH
• dospělí MeSH
• duktální karcinom prsu genetika   metabolismus   patologie   MeSH
• erbB receptory metabolismus   MeSH
• genetická predispozice k nemoci MeSH
• hybridizace in situ fluorescenční MeSH
• imunoenzymatické techniky MeSH
• lidé středního věku MeSH
• lidé MeSH
• lobulární karcinom genetika   metabolismus   patologie   MeSH
• mladý dospělý MeSH
• mucinózní adenokarcinom genetika   metabolismus   patologie   MeSH
• nádory prsu genetika   metabolismus   patologie   MeSH
• prognóza MeSH
• protein BRCA1 genetika   MeSH
• protein BRCA2 genetika   MeSH
• proteiny regulující apoptózu MeSH
• receptor erbB-2 metabolismus   MeSH
• receptory pro estrogeny metabolismus   MeSH
• receptory progesteronu metabolismus   MeSH
• trans-aktivátory genetika   MeSH
• zárodečné mutace genetika   MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mladý dospělý MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH