Cyclin D1 expression and patient outcome after tamoxifen therapy in estrogen receptor positive metastatic breast cancer.
Cyclin D1 expression is closely related with ER status in breast cancer. We executed this study to evaluate whether therapeutic response to tamoxifen varies with levels of cyclin D1 expression in 66 ER positive breast cancer patients having solitary bone metastasis. Treatment response to tamoxifen and correlation between cyclin D1 expression and biologic data of the patients were analyzed. Cyclin D1 expression was detected in 46 patients (69.7%) and significantly reduced in poorly differentiated cancer (p=0.023). Patients with cyclin D1-expressing tumors showed better response to tamoxifen but the difference was not statistically significant. Cyclin D1 expression was associated with differentiation of the breast cancer but not useful in discriminating a good responder to tamoxifen treatment.
Han
Sehwan
S
Department of Surgery, Inje University Sanggye Paik Hospital, Nowon-Gu, Seoul 139-707, Korea. shwhan@unitel.co.kr
Park
Kyeongmee
K
Bae
Byung-Noe
BN
Kim
Ki Hwan
KH
Kim
Hong-Joo
HJ
Kim
Young-Duck
YD
Kim
Hong-Yong
HY
D000328:Adult; D000368:Aged; D018931:Antineoplastic Agents, Hormonal / Q000627:therapeutic use*; D001859:Bone Neoplasms / Q000188:drug therapy / Q000378:metabolism* / Q000556:secondary; D001943:Breast Neoplasms / Q000188:drug therapy / Q000378:metabolism* / Q000473:pathology; D002453:Cell Cycle / Q000187:drug effects; D019938:Cyclin D1 / Q000378:metabolism*; D019008:Drug Resistance, Neoplasm; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D008875:Middle Aged; D009367:Neoplasm Staging; D009376:Neoplasms, Hormone-Dependent / Q000188:drug therapy / Q000378:metabolism*; D017698:Postmenopause; D011379:Prognosis; D011960:Receptors, Estrogen / Q000378:metabolism*; D015996:Survival Rate; D013629:Tamoxifen / Q000627:therapeutic use*; D016896:Treatment Outcome
D018931:Antineoplastic Agents, Hormonal; D011960:Receptors, Estrogen; D013629:Tamoxifen; D019938:Cyclin D1