PMID- 12400611 OWN - NLM STAT- MEDLINE DCOM- 20030312 LR - 20190816 IS - 1042-8194 (Print) IS - 1026-8022 (Linking) VI - 43 IP - 8 DP - 2002 Aug TI - A complex karyotype involving chromosomes 3, 6, 11, 12, and 22 in adult acute lymphoblastic leukemia. PG - 1673-7 AB - Complex chromosomal abnormalities are rare in adult patients with acute lymphoblastic leukemia (ALL). Using molecular methods, we characterized a complex karyotype involving chromosomes 3, 6, 11, 12, and 22 in a 38-year-old man with ALL. Cytogenetic analysis revealed the following karyotype: 46,XY,der(3)t(3;?6)(q22;?p21), - 6,add(11)(q23),add(12)(p13), + mar[10]/46,XY[19]. Because patients with 11q23 abnormalities have a poor prognosis and require aggressive treatment, we used fluorescence in situ hybridization (FISH) to fully characterize the abnormalities. FISH analysis showed no rearrangement of the MLL or ETV6-CBFA2 (TEL-AML1) genes; the wild-type ETV6 allele was deleted in most cells. The revised karyotype after the FISH analysis was as follows: 46,XY,der(3)t(3;12)(p13;p?13)del(3)(q21),der(6)inv(6)(p21q21)ins(6;3)(q21;q21q25),der(11)t (3; 11)(q25;q23),der(12)t(11; 12)(q23;p?12),t(12;22)(p13;q13). Although structural abnormalities involving 11q23 and 12p13 bands were identified by conventional cytogenetics, this report clearly demonstrates that molecular assays are needed to fully characterize gene rearrangements, complex translocations as well as to assign patients to the appropriate treatment group. FAU - Shivakumar, Subramaniyam AU - Shivakumar S AD - Department of Hematology, Christian Medical College Hospital, Vellore, Tamil Nadu, India. FAU - Mathew, Susan AU - Mathew S FAU - Dalton, James AU - Dalton J FAU - Chandy, Mammen AU - Chandy M FAU - Srivastava, Alok AU - Srivastava A LA - eng GR - CA-20180/CA/NCI NIH HHS/United States GR - CA-21765/CA/NCI NIH HHS/United States PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Leuk Lymphoma JT - Leukemia & lymphoma JID - 9007422 RN - 0 (Core Binding Factor Alpha 2 Subunit) RN - 0 (DNA-Binding Proteins) RN - 0 (KMT2A protein, human) RN - 0 (Oncogene Proteins, Fusion) RN - 0 (TEL-AML1 fusion protein) RN - 0 (Transcription Factors) RN - 149025-06-9 (Myeloid-Lymphoid Leukemia Protein) RN - EC 2.1.1.43 (Histone-Lysine N-Methyltransferase) SB - IM MH - Adult MH - *Chromosome Aberrations MH - *Chromosomes, Human, Pair 11 MH - *Chromosomes, Human, Pair 12 MH - *Chromosomes, Human, Pair 22 MH - *Chromosomes, Human, Pair 3 MH - *Chromosomes, Human, Pair 6 MH - Core Binding Factor Alpha 2 Subunit MH - DNA-Binding Proteins/genetics MH - Histone-Lysine N-Methyltransferase MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - Male MH - Myeloid-Lymphoid Leukemia Protein MH - Oncogene Proteins, Fusion/genetics MH - Precursor Cell Lymphoblastic Leukemia-Lymphoma/*genetics MH - *Proto-Oncogenes MH - *Transcription Factors EDAT- 2002/10/29 04:00 MHDA- 2003/03/13 04:00 CRDT- 2002/10/29 04:00 PHST- 2002/10/29 04:00 [pubmed] PHST- 2003/03/13 04:00 [medline] PHST- 2002/10/29 04:00 [entrez] AID - 10.1080/1042819021000003018 [doi] PST - ppublish SO - Leuk Lymphoma. 2002 Aug;43(8):1673-7. doi: 10.1080/1042819021000003018.