PMID- 19211640 OWN - NLM STAT- MEDLINE DCOM- 20090622 LR - 20211020 IS - 1592-8721 (Electronic) IS - 0390-6078 (Print) IS - 0390-6078 (Linking) VI - 94 IP - 3 DP - 2009 Mar TI - Translocation t(11;14) and survival of patients with light chain (AL) amyloidosis. PG - 380-6 LID - 10.3324/haematol.13369 [doi] AB - BACKGROUND: Light chain amyloidosis is a rare plasma cell dyscrasia. Interphase fluorescence in situ hybridization (FISH) coupled to cytoplasmic staining of specific Ig (cIg-FISH) on bone marrow plasma cells has become well established in the initial evaluation of multiple myeloma, a related disorder. Little, however, is known about cytogenetic abnormalities in patients with light chain amyloidosis. DESIGN AND METHODS: We reviewed 56 patients with light chain amyloidosis who had cIg-FISH performed as part of their routine clinical testing using the standard screening panel employed in multiple myeloma at our institution. RESULTS: Seventy percent of patients had abnormal cIg-FISH, with the most common abnormalities being IgH translocations [48%]--including t(11;14) [39%], and t(14;16) [2%]--and del13/del13q [30%]. No t(4;14) or deletions of 17p (p53) were observed. Patients with t(11;14) had the lowest levels of clonal plasma cells, and those with del13 had the highest. The risk of death for patients harboring the t(11;14) translocation was 2.1 (CI 1.04-6.4), which on multivariate analysis was independent of therapy. CONCLUSIONS: Although preliminary, our data would suggest that cIg-FISH testing is important in patients with light chain amyloidosis and that t(11;14) is an adverse prognostic factor in these patients. FAU - Bryce, Alan H AU - Bryce AH AD - Divison of Hematology, Mayo Clinic, 200 First Street, S.W., Rochester, MN 55905, USA. FAU - Ketterling, Rhett P AU - Ketterling RP FAU - Gertz, Morie A AU - Gertz MA FAU - Lacy, Martha AU - Lacy M FAU - Knudson, Ryan A AU - Knudson RA FAU - Zeldenrust, Steven AU - Zeldenrust S FAU - Kumar, Shaji AU - Kumar S FAU - Hayman, Suzanne AU - Hayman S FAU - Buadi, Francis AU - Buadi F FAU - Kyle, Robert A AU - Kyle RA FAU - Greipp, Philip R AU - Greipp PR FAU - Lust, John A AU - Lust JA FAU - Russell, Stephen AU - Russell S FAU - Rajkumar, S Vincent AU - Rajkumar SV FAU - Fonseca, Rafael AU - Fonseca R FAU - Dispenzieri, Angela AU - Dispenzieri A LA - eng GR - P01 CA062242/CA/NCI NIH HHS/United States GR - CA062242/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20090211 PL - Italy TA - Haematologica JT - Haematologica JID - 0417435 RN - 0 (Immunoglobulin Light Chains) SB - IM MH - Adult MH - Aged MH - Amyloidosis/*genetics/pathology/therapy MH - Chromosomes, Human, Pair 11/*genetics MH - Chromosomes, Human, Pair 14/*genetics MH - Female MH - Humans MH - Immunoglobulin Light Chains/genetics MH - In Situ Hybridization, Fluorescence/methods/statistics & numerical data MH - Kaplan-Meier Estimate MH - Male MH - Middle Aged MH - Proportional Hazards Models MH - *Translocation, Genetic PMC - PMC2649355 EDAT- 2009/02/13 09:00 MHDA- 2009/06/23 09:00 PMCR- 2009/03/01 CRDT- 2009/02/13 09:00 PHST- 2009/02/13 09:00 [entrez] PHST- 2009/02/13 09:00 [pubmed] PHST- 2009/06/23 09:00 [medline] PHST- 2009/03/01 00:00 [pmc-release] AID - haematol.13369 [pii] AID - 0940380 [pii] AID - 10.3324/haematol.13369 [doi] PST - ppublish SO - Haematologica. 2009 Mar;94(3):380-6. doi: 10.3324/haematol.13369. Epub 2009 Feb 11.