1. Up to half of patients diagnosed with chronic lymphocytic leukemia in México may not require treatment.
- Author
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Cruz-Mora A, Murrieta-Alvarez I, Olivares-Gazca JC, León-Peña A, Cantero-Fortiz Y, García-Navarrete YI, Sánchez-Valledor LF, Khalaf D, Ruiz-Delgado GJ, and Ruiz-Argüelles GJ
- Subjects
- Adult, Aged, Aged, 80 and over, Female, Humans, Male, Mexico, Middle Aged, Young Adult, Leukemia, Lymphocytic, Chronic, B-Cell drug therapy
- Abstract
Introduction: Although therapeutic choices for patients with chronic lymphocytic leukemia (CLL) were once limited, treatment of this disease has vastly improved in the last decades. Patients and methods: Consecutive CLL patients diagnosed in a single institution were analyzed. Treatment was withheld in persons with CLL Rai stage 0 or 1, until progression and in persons with stages 2-4, with a negative expression of ZAP-70 until progression. Between 1983 and 1991, patients were give chlorambucil and prednisone (CP); after 1991 fludarabine and cyclophosphamide (FC) and after 1998, rituximab and FC (FCR). Results: 98 patients with CLL were identified; 49 were followed for >3 months. 21 persons (43%) did not require treatment nor progressed; 14 received CP, 6 FC, 7 FCR and one rituximab. Median overall survival (OS) has not been reached, being above 247 months; median OS for patients given CP was 115 months, for FC above 132 months and for FCR above 136 months ( p > 0.5). Conclusion: CLL seems to be less aggressive in Mexican mestizos than in Caucasians; 43% of patients do not need treatment at all.
- Published
- 2020
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