PMID- 30967366 OWN - NLM STAT- MEDLINE DCOM- 20200109 LR - 20210202 IS - 1528-0020 (Electronic) IS - 0006-4971 (Linking) VI - 133 IP - 26 DP - 2019 Jun 27 TI - Proteomic evidence of specific IGKV1-8 association with cystic lung light chain deposition disease. PG - 2741-2744 LID - 10.1182/blood.2019898577 [doi] AB - We previously reported a new form of light chain deposition disease (LCDD) presenting as diffuse cystic lung disorder that differs from the usual systemic form with respect to patient age, the male/female ratio, the involved organs, and the hematologic characteristics. We also demonstrated that the light chains were produced by an intrapulmonary B-cell clone and that this clone shared a stereotyped antigen receptor IGHV4-34/IGKV1. However, we only analyzed 3 patients. We conducted a retrospective study including lung tissue samples from 24 patients with pulmonary LCDD ((p)LCDD) matched with samples from 13 patients with pulmonary kappa light chain amyloidosis ((p)AL amyloidosis) used as controls. Mass spectrometry-based proteomics identified immunoglobulin kappa peptides as the main protein component of the tissue deposits in all patients. Interestingly, in (p)LCDD, IGKV1 was the most common kappa family detected (86.4%), and IGKV1-8 was overrepresented compared with (p)AL amyloidosis (75% vs 11.1%, P = .0033). Furthermore, IGKV1-8 was predominantly associated with a diffuse cystic pattern (94%) in (p)LCDD. In conclusion, the high frequency of IGKV1-8 usage in cystic (p)LCDD constitutes an additional feature arguing for a specific entity distinct from the systemic form that preferentially uses IGKV4-1. CI - (c) 2019 by The American Society of Hematology. FAU - Camus, Mylene AU - Camus M AD - Departement d'Anatomie Pathologique, Institut Universitaire du Cancer, Toulouse, France. AD - Institut de Pharmacologie et de Biologie Structurale, Universite de Toulouse, Centre National de la Recherche Scientifique, Universite Paul Sabatier, Toulouse, France. FAU - Hirschi, Sandrine AU - Hirschi S AD - Service de Pneumologie, Centre Hospitalier Universitaire (CHU) Strasbourg, Strasbourg, France. FAU - Prevot, Gregoire AU - Prevot G AD - Service de Pneumologie, CHU Toulouse, Toulouse, France. FAU - Chenard, Marie-Pierre AU - Chenard MP AD - Departement d'Anatomie et Cytologie Patologiques, CHU Strasbourg, Strasbourg, France. FAU - Mal, Herve AU - Mal H AD - Service de Pneumologie, Hopital Bichat, Paris, France. FAU - Stern, Marc AU - Stern M AUID- ORCID: 0000-0001-5275-6959 AD - Service de Pneumologie, Hopital Foch, Suresnes, France. FAU - Reynaud-Gaubert, Martine AU - Reynaud-Gaubert M AD - Service de Pneumologie, CHU Marseille, Marseille, France. FAU - Gilhodes, Julia AU - Gilhodes J AD - Service de Biostatistiques, Institut Claudius Regaud Institut Universitaire du Cancer-O, Toulouse, France; and. FAU - Burlet-Schiltz, Odile AU - Burlet-Schiltz O AD - Institut de Pharmacologie et de Biologie Structurale, Universite de Toulouse, Centre National de la Recherche Scientifique, Universite Paul Sabatier, Toulouse, France. FAU - Brousset, Pierre AU - Brousset P AD - Departement d'Anatomie Pathologique, Institut Universitaire du Cancer, Toulouse, France. AD - Labex Toucan, Toulouse, France. FAU - Colombat, Magali AU - Colombat M AD - Departement d'Anatomie Pathologique, Institut Universitaire du Cancer, Toulouse, France. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190409 PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (Immunoglobulin Light Chains) SB - IM MH - Adult MH - Female MH - Humans MH - Immunoglobulin Light Chains/*genetics MH - Lung Diseases/*genetics/pathology MH - Male MH - Middle Aged MH - Paraproteinemias/*genetics/pathology MH - Proteomics MH - Retrospective Studies EDAT- 2019/04/11 06:00 MHDA- 2020/01/10 06:00 CRDT- 2019/04/11 06:00 PHST- 2019/01/22 00:00 [received] PHST- 2019/03/19 00:00 [accepted] PHST- 2019/04/11 06:00 [pubmed] PHST- 2020/01/10 06:00 [medline] PHST- 2019/04/11 06:00 [entrez] AID - S0006-4971(20)42453-X [pii] AID - 10.1182/blood.2019898577 [doi] PST - ppublish SO - Blood. 2019 Jun 27;133(26):2741-2744. doi: 10.1182/blood.2019898577. Epub 2019 Apr 9.