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Tailoring of chronic lymphatic leukemia therapy.

ABSTRACT: Chronic lymphocytic leukemia (CLL) remains an incurable disease, with all patients who require therapy destined to relapse and understanding of the pathophysiology of chronic lymphocytic leukemia has advanced significantly. It is now clear that chronic lymphocytic leukemia is a relatively proliferative disorder that requires the help of its microenvironment to be maintained and to progress. The stimulation of the chronic lymphatic leukemia cell occurs in most, if not all, patients through antigen stimulation via the B cell receptors. In addition, there is now a appreciation of the role of the p53 pathway leading to chemoresistance and the elucidation of the molecular and intracellular signaling mechanisms of disease is just beginning to facilitate the development of several targeted small molecules that promise to revolutionize the treatment of Chronic lymphocytic leukemia.

SUBMITTER: Elhefni AM

PROVIDER: S-EPMC3755525 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Tailoring of chronic lymphatic leukemia therapy.

Elhefni Ashraf M AM

American journal of blood research 20130819 3

Chronic lymphocytic leukemia (CLL) remains an incurable disease, with all patients who require therapy destined to relapse and understanding of the pathophysiology of chronic lymphocytic leukemia has advanced significantly. It is now clear that chronic lymphocytic leukemia is a relatively proliferative disorder that requires the help of its microenvironment to be maintained and to progress. The stimulation of the chronic lymphatic leukemia cell occurs in most, if not all, patients through antige ...[more]

PMID: 23997983

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Project description:BackgroundChronic lymphocytic leukemia (CLL) primarily affects older persons who often have coexisting conditions in addition to disease-related immunosuppression and myelosuppression. We conducted an international, open-label, randomized phase 3 trial to compare two oral agents, ibrutinib and chlorambucil, in previously untreated older patients with CLL or small lymphocytic lymphoma.MethodsWe randomly assigned 269 previously untreated patients who were 65 years of age or older and had CLL or small lymphocytic lymphoma to receive ibrutinib or chlorambucil. The primary end point was progression-free survival as assessed by an independent review committee.ResultsThe median age of the patients was 73 years. During a median follow-up period of 18.4 months, ibrutinib resulted in significantly longer progression-free survival than did chlorambucil (median, not reached vs. 18.9 months), with a risk of progression or death that was 84% lower with ibrutinib than that with chlorambucil (hazard ratio, 0.16; P<0.001). Ibrutinib significantly prolonged overall survival; the estimated survival rate at 24 months was 98% with ibrutinib versus 85% with chlorambucil, with a relative risk of death that was 84% lower in the ibrutinib group than in the chlorambucil group (hazard ratio, 0.16; P=0.001). The overall response rate was higher with ibrutinib than with chlorambucil (86% vs. 35%, P<0.001). The rates of sustained increases from baseline values in the hemoglobin and platelet levels were higher with ibrutinib. Adverse events of any grade that occurred in at least 20% of the patients receiving ibrutinib included diarrhea, fatigue, cough, and nausea; adverse events occurring in at least 20% of those receiving chlorambucil included nausea, fatigue, neutropenia, anemia, and vomiting. In the ibrutinib group, four patients had a grade 3 hemorrhage and one had a grade 4 hemorrhage. A total of 87% of the patients in the ibrutinib group are continuing to take ibrutinib.ConclusionsIbrutinib was superior to chlorambucil in previously untreated patients with CLL or small lymphocytic lymphoma, as assessed by progression-free survival, overall survival, response rate, and improvement in hematologic variables. (Funded by Pharmacyclics and others; RESONATE-2 ClinicalTrials.gov number, NCT01722487.).

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Tailoring of chronic lymphatic leukemia therapy.

Publications

Tailoring of chronic lymphatic leukemia therapy.

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