PMID- 11568015 OWN - NLM STAT- MEDLINE DCOM- 20011204 LR - 20210216 IS - 0006-4971 (Print) IS - 0006-4971 (Linking) VI - 98 IP - 7 DP - 2001 Oct 1 TI - Translocations involving the immunoglobulin heavy-chain locus are possible early genetic events in patients with primary systemic amyloidosis. PG - 2266-8 AB - Primary systemic amyloidosis (AL) is a plasma cell (PC) dyscrasia with clinical similarities to multiple myeloma (MM) and monoclonal gammopathy of undetermined significance (MGUS), but its molecular basis is poorly understood. Translocations at the immunoglobulin heavy-chain (IgH) locus, 14q32, are likely early genetic events in both MM and MGUS and involve several nonrandom, recurrent, partner chromosomes such as 11q13, 16q23, and 4p16.3. Given the similarities between MM, MGUS, and AL, bone marrow clonal PCs were evaluated in 29 patients with AL using interphase fluorescence in situ hybridization (FISH) combined with immunofluorescence detection of the cytoplasmic light-chain (cIg-FISH) for the presence of 14q32 translocations and the t(11;14)(q13;q32). Of 29 patients studied, 21 (72.4%) showed results compatible with the presence of a 14q32 translocation, and 16 (76.2%) of those had translocation (11;14)(q13;q32) for an overall prevalence of the abnormality of 55%. IgH translocations are common in AL, especially the t(11;14)(q13;q32). FAU - Hayman, S R AU - Hayman SR AD - Departments of Hematology and Internal Medicine and of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN 55905, USA. FAU - Bailey, R J AU - Bailey RJ FAU - Jalal, S M AU - Jalal SM FAU - Ahmann, G J AU - Ahmann GJ FAU - Dispenzieri, A AU - Dispenzieri A FAU - Gertz, M A AU - Gertz MA FAU - Greipp, P R AU - Greipp PR FAU - Kyle, R A AU - Kyle RA FAU - Lacy, M Q AU - Lacy MQ FAU - Rajkumar, S V AU - Rajkumar SV FAU - Witzig, T E AU - Witzig TE FAU - Lust, J A AU - Lust JA FAU - Fonseca, R AU - Fonseca R LA - eng GR - CA21115-25C/CA/NCI NIH HHS/United States GR - P01 CA62242/CA/NCI NIH HHS/United States GR - R01 CA83724-01/CA/NCI NIH HHS/United States 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 - Blood JT - Blood JID - 7603509 RN - 0 (Immunoglobulin Heavy Chains) SB - IM MH - Adult MH - Aged MH - Amyloidosis/*genetics MH - Bone Marrow Cells/pathology MH - *Chromosomes, Human, Pair 11 MH - *Chromosomes, Human, Pair 14 MH - Female MH - Humans MH - Immunoglobulin Heavy Chains/*genetics MH - In Situ Hybridization, Fluorescence MH - Male MH - Middle Aged MH - Plasma Cells/pathology MH - Prevalence MH - Translocation, Genetic/*genetics EDAT- 2001/09/25 10:00 MHDA- 2002/01/05 10:01 CRDT- 2001/09/25 10:00 PHST- 2001/09/25 10:00 [pubmed] PHST- 2002/01/05 10:01 [medline] PHST- 2001/09/25 10:00 [entrez] AID - S0006-4971(20)58772-7 [pii] AID - 10.1182/blood.v98.7.2266 [doi] PST - ppublish SO - Blood. 2001 Oct 1;98(7):2266-8. doi: 10.1182/blood.v98.7.2266.