A complex translocation (5;7) in a patient with acute nonlymphocytic leukemia evolved from a myelodysplastic syndrome.
Complete or partial monosomy for the long arms of chromosomes 5 or 7 or both is frequently observed in therapy-related myelodysplastic syndromes and acute nonlymphocytic leukemia. Sporadic cases have been reported in which partial monosomy is due to unbalanced translocations. The patient described herein carries one such rearrangement. 46,XY,t(1;2) (q32;p23),del(5)(q13),der(7)(5qter-->5q22::7p15-->7 q21:),del(12)(p12), resulting in partial monosomy for the long arms of chromosomes 5 and 7 and in partial monosomy for the short arm of chromosome 7.
Bernasconi
P
P
Istituto di Ematologia, Università di Pavia, Italy.
Cavigliano
P M
PM
Genini
E
E
Castagnola
C
C
Malcovati
L
L
Calatroni
S
S
Caresana
M
M
Boni
M
M
Alessandrino
E P
EP
Astori
C
C
Corso
A
A
Bernasconi
C
C
D002872:Chromosome Deletion; D002895:Chromosomes, Human, Pair 5; D002897:Chromosomes, Human, Pair 7; D006801:Humans; D015470:Leukemia, Myeloid, Acute / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D009190:Myelodysplastic Syndromes / Q000235:genetics*; D014178:Translocation, Genetic