PMID- 15335457 OWN - NLM STAT- MEDLINE DCOM- 20041214 LR - 20191108 IS - 1526-8209 (Print) IS - 1526-8209 (Linking) VI - 5 IP - 3 DP - 2004 Aug TI - HER2 and central nervous system metastasis in patients with breast cancer. PG - 232-4 AB - We report a case of a patient who developed a central nervous system (CNS) metastasis 17 months after surgery and adjuvant therapy for stage II breast cancer. The HER2 status of the primary tumor as determined by immunohistochemistry (IHC) was 1+, and fluorescence in situ hybridization (FISH) performed retrospectively showed a borderline-negative result (ratio, 1:9), although HER2 amplification was present in a minority of breast cancer cells. By contrast, the HER2 status of the CNS metastasis was positive by IHC (3+) and FISH (ratio, 3:7). This report discusses the possibility that, for metastatic invasion into the CNS, clonal selection may occur, favoring HER2-positive cell clones. FAU - Montemurro, Filippo AU - Montemurro F AD - Medical Oncology, Institute for Cancer Research and Treatment, Candiolo, Torino, Italy. fmontemurro@ircc.mauriziano.it FAU - Sarotto, Ivana AU - Sarotto I FAU - Casorzo, Laura AU - Casorzo L FAU - Pisacane, Alberto AU - Pisacane A FAU - Aglietta, Massimo AU - Aglietta M FAU - De Rosa, Giovanni AU - De Rosa G LA - eng PT - Case Reports PT - Journal Article PL - United States TA - Clin Breast Cancer JT - Clinical breast cancer JID - 100898731 SB - IM MH - Breast Neoplasms/*genetics/secondary MH - Carcinoma, Ductal, Breast/*genetics/pathology MH - Cerebellar Neoplasms/*genetics/secondary MH - Female MH - *Genes, erbB-2 MH - Humans MH - Middle Aged EDAT- 2004/09/01 05:00 MHDA- 2004/12/16 09:00 CRDT- 2004/09/01 05:00 PHST- 2004/09/01 05:00 [pubmed] PHST- 2004/12/16 09:00 [medline] PHST- 2004/09/01 05:00 [entrez] AID - S1526-8209(11)70373-1 [pii] AID - 10.3816/cbc.2004.n.027 [doi] PST - ppublish SO - Clin Breast Cancer. 2004 Aug;5(3):232-4. doi: 10.3816/cbc.2004.n.027.