Imatinib mesylate for chronic myeloid leukemia: in patients with initial treatment versus those with Recombinant Human IFN-α2b treatment failure / 浙江大学学报·医学版
Journal of Zhejiang University. Medical sciences
;
(6): 179-183, 2015.
Article
in Chinese
| WPRIM
| ID: wpr-255214
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the efficacy of imatinib mesylate (IM) for patients with newly diagnosed chronic myeloid leukemia (CML) and patients after failure of Recombinant Human interferon-α2b (IFN-α2b) therapy.</p><p><b>METHODS</b>A total of 86 patients with CML in chronic-phase, including 61 newly diagnosed cases and 25 cases of IFN-α2b failure, who received IM at 400 mg daily were retrospectively analyzed. Conventional cytogenetic analysis of R-banding was used to detect chromosome abnormalities and real-time PCR was used to detect BCR-ABL fusion gene.</p><p><b>RESULTS</b>81.9% of newly diagnosed patients and 36.0% of IFN-α2b failure patients achieved partial cytogenetic response (PCyR) by 6 months. In addition, 86.9% of newly diagnosed patients and 68.0% of IFN-α2b failure patients achieved complete cytogenetic response (CCyR) in 24 months. There was significant difference between two groups (P<0.001). The median time achieved CCyR in newly diagnosed group and IFN-α2b failure group were 6 months and 15 months, respectively. Compared with newly diagnosed group, IFN-α2b failure group showed lower rate of complete molecular remission (CMR) (70.4% vs 40.0%, P=0.033). There are 14 patients (22.9%) in newly diagnosed patients with cytogenetic resistance, among whom 4 with primary cytogenetic resistance; while there were 14 patients (56.0%) in IFN-α2b failure group with cytogenetic resistance, all of whom with primary resistance.</p><p><b>CONCLUSION</b>Compared with newly diagnosed patients, CML patients after failure of IFN-α2b therapy have a high rate of primary cytogenetic resistance and low response rate to IM.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Piperazines
/
Pyrimidines
/
Benzamides
/
Recombinant Proteins
/
Leukemia, Myelogenous, Chronic, BCR-ABL Positive
/
Retrospective Studies
/
Treatment Outcome
/
Interferon-alpha
/
Treatment Failure
/
Therapeutic Uses
Type of study:
Observational study
Limits:
Humans
Language:
Chinese
Journal:
Journal of Zhejiang University. Medical sciences
Year:
2015
Type:
Article
Similar
MEDLINE
...
LILACS
LIS