PMID- 12419587 OWN - NLM STAT- MEDLINE DCOM- 20021120 LR - 20190816 IS - 0165-4608 (Print) IS - 0165-4608 (Linking) VI - 138 IP - 1 DP - 2002 Oct 1 TI - Combined analysis of morphology and fluorescence in situ hybridization in follow-up of minimal residual disease in a child with Philadelphia-positive acute lymphoblastic leukemia. PG - 64-8 AB - The past decade has brought new technologies to the study of minimal residual disease (MRD) in leukemia. Each of them has limitations and is far from being accurate. Recently, a new multiparametric cell scanning system (Duet) was introduced to the field of MRD detection. This system has the advantage of automatically scanning large numbers of cells and performing combined analysis of morphology and fluorescence in situ hybridization (FISH) on the same cell. We used this system to characterize the lineage and degree of maturation of the cells carrying the minor m-BCR/ABL fusion, in a follow-up of an 8-year-old boy with Philadelphia-positive (Ph(+)) acute lymphoblastic leukemia (ALL). The boy was treated using a high-risk protocol and was closely monitored with FISH analysis for cells carrying the m-BCR/ABL fusion. Consecutive analysis along 2.5 years from remission showed 0.2-4.5% m-BCR/ALB(+) cells in the peripheral blood (PB), which is within the accepted background range for this method. The combined analysis found that all the m-BCR/ABL(+) cells were mature lymphocytes. Because mature lymphocytes have a long life span in the circulation, this finding supports the fact that the patient is in remission. Moreover, since mature differentiated cells have a low proliferative capacity, there is a low risk for relapse. FAU - Bielorai, Bella AU - Bielorai B AD - Department of Pediatric Hemato-Oncology and Institute of Hematology, The Chaim Sheba Medical Center, Tel-Hashomer and Sackler School of Medicine, Tel-Aviv University, 5262, Tel-Aviv, Israel. FAU - Golan, Hana AU - Golan H FAU - Trakhtenbrot, Luba AU - Trakhtenbrot L FAU - Reichart, Malka AU - Reichart M FAU - Toren, Amos AU - Toren A FAU - Daniely, Michal AU - Daniely M FAU - Zilberstein, Yulia AU - Zilberstein Y FAU - Amariglio, Ninette AU - Amariglio N FAU - Rechavi, Gideon AU - Rechavi G FAU - Kaplinsky, Chaim AU - Kaplinsky C LA - eng PT - Case Reports PT - Journal Article PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 RN - EC 2.7.10.2 (Fusion Proteins, bcr-abl) SB - IM MH - Cell Division MH - Cell Lineage MH - Cell Size MH - Child MH - Child, Preschool MH - Follow-Up Studies MH - Fusion Proteins, bcr-abl/analysis MH - Humans MH - *In Situ Hybridization, Fluorescence MH - Leukemia, Myelogenous, Chronic, BCR-ABL Positive/*genetics/*pathology MH - Male MH - Neoplasm, Residual/*genetics/*pathology MH - Precursor Cell Lymphoblastic Leukemia-Lymphoma/*genetics/*pathology EDAT- 2002/11/07 04:00 MHDA- 2002/11/26 04:00 CRDT- 2002/11/07 04:00 PHST- 2002/11/07 04:00 [pubmed] PHST- 2002/11/26 04:00 [medline] PHST- 2002/11/07 04:00 [entrez] AID - S0165460802005782 [pii] AID - 10.1016/s0165-4608(02)00578-2 [doi] PST - ppublish SO - Cancer Genet Cytogenet. 2002 Oct 1;138(1):64-8. doi: 10.1016/s0165-4608(02)00578-2.