PMID- 10576504 OWN - NLM STAT- MEDLINE DCOM- 19991208 LR - 20190826 IS - 0145-2126 (Print) IS - 0145-2126 (Linking) VI - 23 IP - 11 DP - 1999 Nov TI - A new complex variant Philadelphia chromosome, t(1;9;22)ins(17;22), characterized by fluorescence in situ hybridization in an adult ALL. PG - 1001-6 AB - A new complex variant Philadelphia chromosome was detected in a 65-year-old man with acute, pre-B, lymphoblastic leukemia (ALL). The classic cytogenetic analysis identified an apparently balanced three-way translocation t(1;9;22)(q25;q34;q11.2). Fluorescence in situ hybridization (FISH) studies confirmed the translocation and showed bcr/abl fusion on the der(22). However, these studies revealed that the distal part of the bcr gene was not translocated onto chromosome 1 at 1q25, but inserted into chromosome 17 at 17p12-13. This complex variant translocation was described as a t(1;9;22)(q25;q34;q11.2)ins(17;22)(p12-13;q11.2q11.2). Secondary changes including +8, an inversion of the derivative chromosome 9, a translocation t(14;20)(q11;q13), and an additional derivative 22 were also identified in most of the abnormal cells. The patient died from systemic fungemia and multiorgan failure 9 months after the diagnosis of ALL. The clinical significance of complex variant Philadelphia chromosomes in ALL is reviewed and discussed. FAU - Fan, Y S AU - Fan YS AD - Department of Laboratory Medicine, London Health Sciences Centre, Ont., Canada. fany@lhsc.on.ca FAU - Rizkalla, K AU - Rizkalla K FAU - Barr, R M AU - Barr RM LA - eng PT - Case Reports PT - Journal Article PL - England TA - Leuk Res JT - Leukemia research JID - 7706787 SB - IM MH - Adult MH - Aged MH - Chromosome Banding MH - *Chromosomes, Human MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - Male MH - *Philadelphia Chromosome MH - Precursor Cell Lymphoblastic Leukemia-Lymphoma/*genetics MH - *Translocation, Genetic EDAT- 1999/11/27 00:00 MHDA- 1999/11/27 00:01 CRDT- 1999/11/27 00:00 PHST- 1999/11/27 00:00 [pubmed] PHST- 1999/11/27 00:01 [medline] PHST- 1999/11/27 00:00 [entrez] AID - S0145-2126(99)00130-7 [pii] AID - 10.1016/s0145-2126(99)00130-7 [doi] PST - ppublish SO - Leuk Res. 1999 Nov;23(11):1001-6. doi: 10.1016/s0145-2126(99)00130-7.