PMID- 15824823 OWN - NLM STAT- MEDLINE DCOM- 20060105 LR - 20211203 IS - 0034-9887 (Print) IS - 0034-9887 (Linking) VI - 133 IP - 2 DP - 2005 Feb TI - [Relationship of oncogene C-erbB-2 amplification in breast cancer with pathological parameters and disease free survival]. PG - 151-7 AB - BACKGROUND: Proto-oncogene c-erbB-2 is located in chromosome 17 region q21 and codifies a 185 Kd protein, with tyrosine kinase activity. The amplification of this gene is associated with relapse and lower survival in breast cancer. Overexpression of this gene can be detected by immunohistochemistry (IHC). However, fluorescence in situ hybridization (FISH) and chromogenic in situ hybridization (CISH) allow the simultaneous analysis of morphology and overexpression of the gene. AIM: To evaluate the relationship of c-erbB-2 oncogene amplification measured by FISH with histological graduation, presence of positive Iymph nodes and evolution of breast cancer. PATIENTS AND METHODS: One hundred and ten tissue samples of invasive ductal or lobulillar breast cancer, positive for c-erbB-2 oncogene by IHC were analysed. The presence of c-erbB-2 oncogene amplification was subsequently analyzed by FISH. RESULTS: There was a significant association of c-erbB-2 amplification by FISH with pathological graduation of the tumor, number of regional Iymph nodes involved and disease free survival. CONCLUSIONS: Proto-oncogene c-erbB-2 amplification is a good indicator of bad prognosis in invasive breast cancer. FAU - Rojas-Atencio, Alicia E AU - Rojas-Atencio AE AD - Unidad de Genetica Medica, Facultad de Medicina, Universidad del Zulia, Maracaibo, Venezuela. arojasa@cantv.net FAU - Valbuena, Ivonne AU - Valbuena I FAU - Urdaneta, Karelis AU - Urdaneta K FAU - Soto-Quintana, Marisol AU - Soto-Quintana M FAU - Alvarez-Nava, Francisco AU - Alvarez-Nava F FAU - Gonzalez, Leonardo AU - Gonzalez L FAU - Viloria-Alvarado, Maria E AU - Viloria-Alvarado ME FAU - Quintero-Bellagamba, Rita AU - Quintero-Bellagamba R LA - spa PT - Journal Article TT - Relacion entre la amplificacion del oncogen C-erbB-2 y parametros histologicos con sobrevida libre de enfermedad en pacientes con cancer de mama. DEP - 20050407 PL - Chile TA - Rev Med Chil JT - Revista medica de Chile JID - 0404312 SB - IM MH - Breast Neoplasms/*genetics/mortality/*pathology MH - Carcinoma, Ductal, Breast/genetics/mortality/pathology MH - Chile MH - Female MH - Follow-Up Studies MH - *Gene Amplification MH - Genes, erbB-2/*genetics MH - Humans MH - Immunohistochemistry MH - In Situ Hybridization, Fluorescence MH - Neoplasm Invasiveness MH - Prognosis MH - Proto-Oncogene Mas EDAT- 2005/04/13 09:00 MHDA- 2006/01/06 09:00 CRDT- 2005/04/13 09:00 PHST- 2005/04/13 09:00 [pubmed] PHST- 2006/01/06 09:00 [medline] PHST- 2005/04/13 09:00 [entrez] AID - S0034-98872005000200001 [pii] AID - 10.4067/s0034-98872005000200001 [doi] PST - ppublish SO - Rev Med Chil. 2005 Feb;133(2):151-7. doi: 10.4067/s0034-98872005000200001. Epub 2005 Apr 7.