{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T22:03:46Z","timestamp":1790805826708,"version":"4.1.0"},"reference-count":40,"publisher":"American Society of Hematology","issue":"20","content-domain":{"domain":["ashpublications.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2020,5,14]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes (POEMS) syndrome is a rare multisystem disease resulting from an underlying plasma cell (PC) dyscrasia. The pathophysiology of the disease remains unclear, but the role of the monoclonal immunoglobulin (Ig) light chain (LC) is strongly suspected because of the highly restrictive usage of 2 \u03bb variable (V) domains (IGLV1-40 and IGLV1-44) and the general improvement of clinical manifestations after PC clone-targeted treatment. However, the diagnostic value of Ig LC sequencing, especially in the case of incomplete forms of the disease, remains to be determined. Using a sensitive high-throughput Ig repertoire sequencing on RNA (rapid amplification of cDNA ends-based repertoire sequencing [RACE-RepSeq]), we detected a \u03bb LC monoclonal expansion in the bone marrow (BM) of 83% of patients with POEMS syndrome, including some in whom BM tests routinely performed to diagnose plasma cell dyscrasia failed to detect \u03bb+ monoclonal PCs. Twenty-four (83%) of the 29 LC clonal sequences found were derived from the IGLV1-40 and IGLV1-44 germline genes, as well as 2 from the closely related IGLV1-36 gene, and all were associated with an IGLJ3*02 junction (J) gene, confirming the high restriction of VJ region usage in POEMS syndrome. RACE-RepSeq VJ full-length sequencing additionally revealed original mutational patterns, the strong specificity of which might crucially help establish or eliminate the diagnosis of POEMS syndrome in uncertain cases. Thus, RACE-RepSeq appears as a sensitive, rapid, and specific tool to detect low-abundance PC clones in BM and assign them to POEMS syndrome, with all the consequences for therapeutic options.<\/jats:p>","DOI":"10.1182\/blood.2019004197","type":"journal-article","created":{"date-parts":[[2020,4,3]],"date-time":"2020-04-03T16:09:54Z","timestamp":1585930194000},"page":"1750-1758","update-policy":"https:\/\/doi.org\/10.1182\/blood.2019cm0000","source":"Crossref","is-referenced-by-count":53,"title":["Immunoglobulin variable domain high-throughput sequencing reveals specific novel mutational patterns in POEMS syndrome"],"prefix":"10.1182","volume":"135","author":[{"given":"S\u00e9bastien","family":"Bender","sequence":"first","affiliation":[{"name":"Centre National de la Recherche Scientifique (CNRS) Unit\u00e9 Mixte de Recherche (UMR) 7276\/INSERM U1262, Universit\u00e9 de Limoges, Limoges, France;"},{"name":"Centre National de R\u00e9f\u00e9rence de l\u2019Amylose AL et autres Maladies par 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