Prognostic Significance of 13q14 Deletion in Egyptian Chronic Lymphocytic Leukemia Patients | ||||
| Zagazig University Medical Journal | ||||
| Volume 30, Issue 1.2, January and February 2024, Page 350-360 PDF (940.62 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/zumj.2023.223452.2827 | ||||
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| Authors | ||||
Manal Mohamed Easa   1; Doaa M.AbdElmonem 2; Ahmed Embaby 3; Weaam Ibrahim Ismail4
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| 1lecturer of clinical pathology- faculty of medicine- zagazig university- zagazig- Egypt | ||||
| 2assistant professor of Clinical Pathology, faculty of medicine - Zagazig university, Egypt | ||||
| 3Lecturer of Internal Medicine,Clinical Hematology Unit Faculty of Medicine, Zagazig University, Zagazig Egypt | ||||
| 4lecturer of Clinical pathology department, Zagazig faculty of medicine ,Zagazig university | ||||
| Abstract | ||||
| Background: chronic lymphocytic leukemia (CLL) is B lymphocyte malignancy affect mainly adult, its clinical course is variable. 13q deletion is common cytogenetic abnormality found in CLL patients and in general it is associated with a good prognosis. However, it was noticed that there are clinical heterogeneity among CLL patients harboring 13q deletion which may be attributed to type, size, or rate of 13q deletion so, it was important to clarify the source of this heterogeneity. Patients and methods: seventy one CLL patients were examined by conventional cytogenetic and fluorescent in situ hybridization (FISH) for 13q14 deletion. Results: deletion of 13q14 was detected in 45/71 CLL patients (63.4%) and those had significantly lower absolute lymphocytic count (ALC) and hemoglobin concentration, 53.3% of positive patients were in Binet stage A, and 31.1% of them required chemotherapy. In 38 patients 13q14 deletion was found as an isolated abnormality and those had significantly lower WBCs count, ALC and LDH than those with accompanied cytogentic abnormalities (non-isolated). The deletion was found at a rate (≥80%) in (8/ 38) patients with isolated deletion type and those had a significantly shorter time to treatment. The 13q14 deletion was biallelic in only 3/38 of patients with isolated type and all of them had a diffuse bone marrow infiltration pattern. Conclusion: 13q14 deletion is common cytogenetic abnormality in CLL patients and has variable impact on the disease condition according to specific features of deletion such as isolated or non- isolated, deletion rate, and deletion type being monoallelic or biallelic. | ||||
| Keywords | ||||
| Chronic lymphocytic leukemia; 13q14 deletion; fluorescent in situ hybridization | ||||
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