PMID- 12775237 OWN - NLM STAT- MEDLINE DCOM- 20030612 LR - 20071115 IS - 0366-6999 (Print) IS - 0366-6999 (Linking) VI - 116 IP - 2 DP - 2003 Feb TI - Clinical, cytogenetic and dual-color FISH studies on five cases of myelodysplastic syndrome or acute myeloid leukemia patients with 1;7 translocation. PG - 231-4 AB - OBJECTIVE: To study the clinical and cytogenetic characteristics of four patients with myelodysplastic syndrome (MDS) and one with acute myeloid leukemia experiencing t (1;7). METHODS: Five patients seen in our hospital from 1992 to 2001 were diagnosed as MDS and acute myelocytic leukemia (AML) according to the French-American-British (FAB) criteria. Chromosomes were prepared using the direct method as well as 24-hour unstimulated cultures of fresh heparinized bone marrow for each subject, while R-banding was used to analyze karyotypes. Dual-color fluorescence in situ hybridization (FISH) using SpectrumRed and SpectrumGreen directly labeled chromosome 1-specific alpha-satellite DNA probe (red) and chromosome 7- specific alpha-satellite DNA probe (green) was performed for three cases. RESULTS: Of the five patients, three had 1;7 translocation due to a long history of exposure to benzene. In three cases, dual-color FISH resulted in three red signals and two green ones, in which one red signal adjoining one green signal in 27.6%, 84% and 18.5% metaphases, respectively. CONCLUSIONS: Exposure to benzene may be the cause for Chinese MDS and AML patients with t (1;7) translocation. The result of dual-color FISH convincingly confirmed that the centromere of the derivative chromosome 7p/1q resulting from 1;7 translocation was made up of centromeres from both chromosomes 1 and 7. FAU - Shen, Yongmei AU - Shen Y AD - Leukemia Research Unit, Jiangsu Institution of Hematology, First Affiliated Hospital of Soochow University, Suzhou 215006, China. FAU - Xue, Yongquan AU - Xue Y FAU - Li, Jianyong AU - Li J FAU - Pan, Jinlan AU - Pan J FAU - Wu, Yafang AU - Wu Y LA - eng PT - Case Reports PT - Journal Article PL - China TA - Chin Med J (Engl) JT - Chinese medical journal JID - 7513795 SB - IM MH - Adult MH - *Chromosomes, Human, Pair 1 MH - *Chromosomes, Human, Pair 7 MH - Female MH - Humans MH - *In Situ Hybridization, Fluorescence MH - Leukemia, Myeloid, Acute/*genetics MH - Male MH - Myelodysplastic Syndromes/*genetics MH - *Translocation, Genetic EDAT- 2003/05/31 05:00 MHDA- 2003/06/13 05:00 CRDT- 2003/05/31 05:00 PHST- 2003/05/31 05:00 [pubmed] PHST- 2003/06/13 05:00 [medline] PHST- 2003/05/31 05:00 [entrez] PST - ppublish SO - Chin Med J (Engl). 2003 Feb;116(2):231-4.