TY - JOUR
T1 - Mixed-lineage leukemia revisited
T2 - Acute lymphocytic leukemia with myeloperoxidase-positive blasts by electron microscopy
AU - Kantarjian, Hagop M.
AU - Hirsch-Ginsberg, Cheryl
AU - Yee, Garland
AU - Huh, Yang
AU - Freireich, Emil J.
AU - Stass, Sanford
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 1990/8/15
Y1 - 1990/8/15
N2 - Seven adult patients with untreated acute lymphocytic leukemia (ALL) who manifested 5% to 40% myeloperoxidase (MPO)-positive blasts by electron microscopy (EM) are reported. Six patients had an L2 morphology, and one had an L1 morphology by the French-American-British (FAB) classification. The immunophenotype was T cell in four patients. Molecular analysis showed rearrangement of the immunoglobulin JH in four patients, three of them also having rearrangement of the T-cell receptor beta or gamma. Induction chemotherapy with vincristine-doxorubicindexamethasone (VAD) produced a complete remission in five of six patients (83%). Our findings suggest the existence of a previously undescribed subtype of mixed-lineage leukemia, which by morphology and immunophenotype often appears as T-cell ALL but exhibits MPO-positive blasts by EM.
AB - Seven adult patients with untreated acute lymphocytic leukemia (ALL) who manifested 5% to 40% myeloperoxidase (MPO)-positive blasts by electron microscopy (EM) are reported. Six patients had an L2 morphology, and one had an L1 morphology by the French-American-British (FAB) classification. The immunophenotype was T cell in four patients. Molecular analysis showed rearrangement of the immunoglobulin JH in four patients, three of them also having rearrangement of the T-cell receptor beta or gamma. Induction chemotherapy with vincristine-doxorubicindexamethasone (VAD) produced a complete remission in five of six patients (83%). Our findings suggest the existence of a previously undescribed subtype of mixed-lineage leukemia, which by morphology and immunophenotype often appears as T-cell ALL but exhibits MPO-positive blasts by EM.
UR - http://www.scopus.com/inward/record.url?scp=0025128412&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0025128412&partnerID=8YFLogxK
M3 - Article
C2 - 2166608
AN - SCOPUS:0025128412
SN - 0006-4971
VL - 76
SP - 808
EP - 813
JO - Blood
JF - Blood
IS - 4
ER -