PMID- 12935927 OWN - NLM STAT- MEDLINE DCOM- 20031001 LR - 20220311 IS - 0165-4608 (Print) IS - 0165-4608 (Linking) VI - 145 IP - 2 DP - 2003 Sep TI - New highly sensitive fluorescence in situ hybridization method to detect PML/RARA fusion in acute promyelocytic leukemia. PG - 144-51 AB - We investigated a new fluorescence in situ hybridization (FISH) method to detect PML/RARA fusion and/or anomalies of the RARA gene (alias RARalpha) in interphase nuclei from patients with acute promyelocytic leukemia (APL). This method uses a commercially available product with two different colored fluorescent probes to detect both PML/RARA gene fusion products (double fusion signal or dual-color fluorescence in situ hybridization [D-FISH]). A total of 82 bone marrow specimens were studied, including 30 from normal bone marrow transplant donors, 33 from patients with untreated APL, 14 from patients with treated APL, and 5 from APL patients with known translocation variants or alternate translocations. The signal patterns and percentage of abnormal nuclei were determined in a blinded study on 500 interphase nuclei for each specimen. Based on 25 normal specimens, the normal cutoff was >0.6% and >1.6% for t(15;17) and t(17;var), respectively. The clinical sensitivity for this series of patients was 98% and the clinical specificity was 100%. The results suggest that the new D-FISH probe set can detect all t(15;17)(q22;q21) and all variant forms of this translocation associated with PML and RARA. In addition, this FISH method can detect all alternate translocations involving RARA and not PML. This FISH method can be used both for the accurate diagnosis of APL and to monitor low levels of disease in treated patients. FAU - Brockman, Stephanie R AU - Brockman SR AD - Division of Laboratory Genetics, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA. FAU - Paternoster, Sarah F AU - Paternoster SF FAU - Ketterling, Rhett P AU - Ketterling RP FAU - Dewald, Gordon W AU - Dewald GW LA - eng PT - Journal Article PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 RN - 0 (Neoplasm Proteins) RN - 0 (Oncogene Proteins, Fusion) RN - 0 (promyelocytic leukemia-retinoic acid receptor alpha fusion oncoprotein) SB - IM MH - Bone Marrow Cells/metabolism MH - Humans MH - In Situ Hybridization, Fluorescence/*methods MH - Leukemia, Promyelocytic, Acute/*genetics MH - Neoplasm Proteins/*genetics MH - Oncogene Proteins, Fusion/*genetics EDAT- 2003/08/26 05:00 MHDA- 2003/10/02 05:00 CRDT- 2003/08/26 05:00 PHST- 2003/08/26 05:00 [pubmed] PHST- 2003/10/02 05:00 [medline] PHST- 2003/08/26 05:00 [entrez] AID - S016546080300061X [pii] AID - 10.1016/s0165-4608(03)00061-x [doi] PST - ppublish SO - Cancer Genet Cytogenet. 2003 Sep;145(2):144-51. doi: 10.1016/s0165-4608(03)00061-x.