Oncologie clinique : rapports de cas

A Sole Cytogenetic Abnormality r (2) in Acute Lymphocytic Leukemia Patient: An Indian Experience

Patel Dharmesh M, Trivedi Pina J, Brahmbhatt Manisha M and Patel Prabhudas S* (India)

Cytogenetic abnormalities are established as important prognostic factor for Leukemia. After the first report of a ring chromosome in a case of human leukemia ring chromosomes have been infrequently (<10%) detected in hematopoietic neoplasias. However, ring chromosomes are part of complex karyotype associated with a poor prognosis. In this study we document a case of 21 years old Acute Lymphoblastic Leukemia (ALL) patient. Short term unstimulated bone marrow (BM) and peripheral blood lymphocyte cultures were performed. The karyotype report was 46, XY, r (2)(p23-25q33-37). Fluorescence in-situ hybridization using WCP for chromosome 2 confirmed presence of ring chromosome 2. In most cases, there are no confirmatory reports on an association between a specific leukemia subtypes with ring chromosome. This case report may constitute a distinctive subtype. Further analysis of such cases is required to define complete disease entity.