C(H)OP refractory chronic lymphocytic leukemia patients in whom salvage chemotherapy chosen by evaluating multiple chemotherapeutic drug-resistant factors was remarkably effective.
Int J Clin Oncol
; 8(5): 326-31, 2003 Oct.
Article
em En
| MEDLINE
| ID: mdl-14586760
ABSTRACT
It is well known that the expression of anticancer drug-resistant factors is elevated in patients with primary refractory or relapsed chronic lymphocytic leukemia (CLL) who have been treated with chemotherapy. We report here two C(H)OP refractory patients with CLL in whom salvage chemotherapy chosen by evaluating anticancer drug-resistant factors (glutathione-S-transferase-Pi [GST-Pi], glycoprotein [GP]-170, multidrug resistance-associated protein [MRP], and lung resistance protein [LRP]) was remarkably effective. A 71-year-old male patient was refractory to induction therapy with cyclophosphamide, vincristine, and prednisone (COP), and his leukemic cells at diagnosis displayed overexpression of GST-Pi and GP-170. A 74-year-old female patient's condition had been stable; she had received ten courses of COP over 9 years. However, because systemic lymphadenopathies recurred, she was treated with chemotherapy consisting of cyclophosphamide, adriamycin, vincristine, and prednisone (CHOP) or dexamethasone, etoposide, ifosphamide, and carboplatin (DeVIC). However, she did not respond at all, and her leukemic cells at recurrence displayed overexpression of GST-Pi. Therefore, we chose for these patients a salvage therapy consisting of dexamethasone and high-dose cytosine arabinoside (Ara C), to which neither GST-Pi nor GP-170 show any drug resistance. In both patients, this salvage therapy proved effective.
Buscar no Google
Base de dados:
MEDLINE
Assunto principal:
Leucemia Linfocítica Crônica de Células B
/
Protocolos de Quimioterapia Combinada Antineoplásica
/
Terapia de Salvação
/
Resistencia a Medicamentos Antineoplásicos
Idioma:
En
Ano de publicação:
2003
Tipo de documento:
Article