PMID- 15308013 OWN - NLM STAT- MEDLINE DCOM- 20090507 LR - 20040813 IS - 0253-2727 (Print) IS - 0253-2727 (Linking) VI - 25 IP - 6 DP - 2004 Jun TI - [The application of fluorescence in situ hybridization to diagnosis of acute promyelocytic leukemia]. PG - 346-50 AB - OBJECTIVES: To explore whether PML/RAR alpha fusion gene presented in patients with typical clinical characteristics of acute promyelocytic leukemia (APL) but normal karyotype or atypical translocation of chromosomes 15 and 17 by conventional cytogenetic analysis (CCA), and to assess the application of fluorescence in situ hybridization (FISH) to diagnosis of APL. METHODS: 193 newly diagnosed APL patients received CCA in our hospital, 32 cases of whom were carried out FISH analysis, and some of the patients received reverse transcriptase polymerase chain reaction (RT-PCR) detection. RESULTS: 132 of 193 (68.4%) cases were identified to have t(15;17) (q22;q12) by CCA. The selected 32 patients were divided into three groups according to CAA results: group 1 included 14 cases with typical t(15;17), group 2 included 13 cases without t(15;17), and group 3 included five cases with complex karyotype involving chromosomes 15 and 17. As expected, all cases in group 1 were detected PML/RAR alpha fusion by FISH. In group 2, all patients presented the same molecular abnormality by FISH in spite of absence of t(15;17), and in group 3, FISH not only detected PML/RAR alpha fusion but also identified the fusion signals located on chromosomes, other than chromosome 15q. CONCLUSION: All the APL with typical clinical characteristics can be detected PML/RAR alpha fusion by FISH or RT-PCR regardless of classical t(15;17). FISH is more sensitive for molecularly diagnosis of APL, and can identify the precise location of the fusion signals in complex karyotype. It is necessary in clinically APL patients with no or atypical chromosomal abnormalities to perform FISH analysis. FAU - Li, Cheng-Wen AU - Li CW AD - Institute of Hematology and Blood Disease Hospital, CAMS & PUMC, Tianjin 300020, China. FAU - Liu, Shi-He AU - Liu SH FAU - Bo, Li-Jin AU - Bo LJ FAU - Qin, Shuang AU - Qin S FAU - Liu, Xu-Ping AU - Liu XP FAU - Dai, Yun AU - Dai Y FAU - Wang, Jian-Xiang AU - Wang JX LA - chi PT - English Abstract PT - Journal Article PL - China TA - Zhonghua Xue Ye Xue Za Zhi JT - Zhonghua xue ye xue za zhi = Zhonghua xueyexue zazhi JID - 8212398 SB - IM MH - Adolescent MH - Adult MH - Child MH - Female MH - Humans MH - *In Situ Hybridization, Fluorescence MH - Karyotyping MH - Leukemia, Promyelocytic, Acute/*diagnosis MH - Male MH - Middle Aged MH - Reverse Transcriptase Polymerase Chain Reaction EDAT- 2004/08/17 10:00 MHDA- 2009/05/08 09:00 CRDT- 2004/08/17 10:00 PHST- 2004/08/17 10:00 [pubmed] PHST- 2009/05/08 09:00 [medline] PHST- 2004/08/17 10:00 [entrez] PST - ppublish SO - Zhonghua Xue Ye Xue Za Zhi. 2004 Jun;25(6):346-50.