title: Clinical impacts of tumor cell contamination of hematopoietic stem cell products in metastatic breast cancer patients undergoing autologous peripheral blood stem cell transplantation: multicenter trial.
abstract: To determine whether the tumor cell contamination of peripheral blood stem cells influences clinical impacts on high-dose chemotherapy in patients with metastatic breast cancer, we analyzed carcinoembryonic antigen (CEA) mRNA in the apheresis products by nested RT-PCR (reverse transcriptase-polymerase chain reaction). A total of 38 metastatic breast cancer patients and ten normal healthy subjects as a negative control were included. Twenty out of 38 (51.3%) apheresis products from patients with metastatic breast cancer were positive for CEA mRNA. CEA mRNA was noted in 54.8% (17/31) of patients mobilized with chemotherapy plus G-CSF and 42.8% (3/7) of patients with G-CSF alone. There was no significant difference in age, estrogen receptor, menopausal status, mobilization method, disease free interval, or number of metastasis sites (1 vs > or = 2) between positive and negative groups. The presence of CEA mRNA in apheresis products did not influence the time to progression and overall survival in both groups. However, both the univariate and the multivariate analysis disclosed that the number of metastasis was associated with survival significantly. We suggest that the tumor cell contamination does not predict poor treatment outcome in patients with metastatic breast cancer.
authors: Section of Hematology-Oncology, Department of Internal Medicine, Hanyang University Kuri Hospital, Kuri, Korea. ahnmj@hanyang.ac.kr
authors: M J
authors: MJ
authors: Ahn
authors: Y H
authors: YH
authors: Noh
authors: Y S
authors: YS
authors: Lee
authors: Y Y
authors: YY
authors: Lee
authors: I Y
authors: IY
authors: Choi
authors: I S
authors: IS
authors: Kim
authors: E K
authors: EK
authors: Joh
authors: D B
authors: DB
authors: Shin
authors: S Y
authors: SY
authors: Kim
authors: K S
authors: KS
authors: Cho
authors: H C
authors: HC
authors: Kim
authors: H S
authors: HS
authors: Kim
authors: C W
authors: CW
authors: Suh
authors: S H
authors: SH
authors: Kim
authors: J A
authors: JA
authors: Lee
authors: Y S
authors: YS
authors: Park
mesh_terms: D000328:Adult; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000008:administration & dosage; D001943:Breast Neoplasms / Q000188:drug therapy* / Q000401:mortality / Q000556:secondary*; D002272:Carcinoembryonic Antigen / Q000235:genetics; D003131:Combined Modality Therapy; D003520:Cyclophosphamide / Q000008:administration & dosage; D018572:Disease-Free Survival; D004317:Doxorubicin / Q000008:administration & dosage; D015251:Epirubicin / Q000008:administration & dosage; D005260:Female; D005472:Fluorouracil / Q000008:administration & dosage; D018380:Hematopoietic Stem Cell Transplantation / Q000009:adverse effects*; D006801:Humans; D008875:Middle Aged; D015999:Multivariate Analysis; D009360:Neoplastic Cells, Circulating; D016133:Polymerase Chain Reaction; D011379:Prognosis; D012333:RNA, Messenger / Q000032:analysis; D020133:Reverse Transcriptase Polymerase Chain Reaction
chemical_list: D002272:Carcinoembryonic Antigen; D012333:RNA, Messenger; D015251:Epirubicin; D004317:Doxorubicin; D003520:Cyclophosphamide; D005472:Fluorouracil