Premium
Paucity of TEL‐AML 1 translocation, by multiplex RT‐PCR, in B‐lineage acute lymphoblastic leukemia (ALL) in Indian patients
Author(s) -
Sazawal S.,
Bhatia K.,
Gutierrez M.I.,
Saxena R.,
Arya L.S.,
Bhargava M.
Publication year - 2004
Publication title -
american journal of hematology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.456
H-Index - 105
eISSN - 1096-8652
pISSN - 0361-8609
DOI - 10.1002/ajh.20000
Subject(s) - chromosomal translocation , lymphoblastic leukemia , medicine , leukemia , fusion transcript , multiplex polymerase chain reaction , lineage (genetic) , fusion gene , gastroenterology , biology , polymerase chain reaction , genetics , gene
A total of 69 patients of B lineage ALL, 35 children (32 males, 3 females) and 34 young adults (27 males, 7 females) were studied by multiplex RT‐PCR to determine the relative frequency of t(9;22), t(12;21), t(1;19), and t(4;11,). Translocation (9;22) was seen in 1/35 (2.8%) and t(1;19) in 2/35 (5.7%) children. None of the children showed t(12;21) and t(4;11) translocations. In young adults, t(9;22) and t(1;19) were seen in 5/34 (14.7%) and 2/34 (5.8%) patients, respectively. None of the latter showed t(12;21) or t(4;11) translocations. Thus, there appears to be a significant under representation of the fusion transcripts for TEL‐AML, a good prognostic marker, in this study, unlike in the West, where it is seen in 35% of children with ALL. This, together with the generally increased leukemic burden seen in Indian patients, may explain in part, the poor treatment outcome reported. Am. J. Hematol. 76:80–82, 2004. © 2004 Wiley‐Liss, Inc.