[Cytogenetic and clinical characteristics in 31 cases of blood diseases with aberrations at short arm of chromosome 12].
To investigate the cytogenetic and clinical characteristics in patients with abnormalities at the short arm of chromosome 12, chromosome specimens were prepared by 24-hour culture of bone marrow cells and undergone karyotype analysis by G-banding technique. The results showed that aberration at the short arm of chromosome 12 were detected in 16 cases with 12p balanced translocation, in 10 cases with 12p deletion, 6 cases with 12p addition, and in 1 case with inversion 12. By complex karyotype classification, 12p translocation included 6 simple aberrations, 6 complex aberrations, and 4 highly complex aberrations; while 12p deletion were mainly composed of highly complexity of aberration. Patients consisted of acute leukemia, myelodysplastic syndrome, chronic myelogenous leukemia and so on. Clinical follow-up data were available in 14 patients, in which 8 cases of acute leukemia were treated with conventional chemotherapy only. Three of them attained complete remission, and the median survival time in 8 patients was 5.5 months. In conclusion, the aberrations at short arm of chromosome 12 were involved in a broad spectrum of haematological malignancies, and the karyotypes showed most complexity of aberration with low remission rate and short survival in clinic.
Zhang
Yan
Y
Institute of Hematology and People's Hospital, Peking University, Beijing 100044, China.
Qiu
Jing-Ying
JY
He
Qi
Q
Shi
Yan
Y
Lu
Dao-Pei
DP
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002869:Chromosome Aberrations; D002881:Chromosomes, Human, Pair 12; D005260:Female; D006801:Humans; D007938:Leukemia / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D009101:Multiple Myeloma / Q000235:genetics; D009190:Myelodysplastic Syndromes / Q000235:genetics