Identification of patients at high risk of secondary extramedullary multiple myeloma development

Autor: Tomas Jelinek, Jiri Minarik, Ivan Spicka, Petra Krhovska, Viera Sandecká, Martin Stork, Ludek Pour, Jan Straub, Sabina Ševčíková, Petr Pavlicek, Alexandra Jungova, Jakub Radocha, Roman Hájek, Lucie Brozova, Jiri Jarkovsky, Vladimir Maisnar, Lenka Pospisilova
Rok vydání: 2021
Předmět:
Zdroj: British Journal of Haematology. 196:954-962
ISSN: 1365-2141
0007-1048
DOI: 10.1111/bjh.17925
Popis: Multiple myeloma (MM) is characterized by malignant plasma cell infiltration of the bone marrow. In extramedullary multiple myeloma (EMD), a subclone of these cells migrates out of the bone marrow. Out of 4 985 MM patients diagnosed between 2005 and 2017 in the Czech Republic, we analyzed 234 secondary EMD patients to clarify risk factors of secondary EMD development. We found younger age [65 years; odds ratio (OR) 4·38, 95% confidence interval (CI): 2·46-7·80, P 0·0001], high lactate dehydrogenase (LDH) levels (5 μkat/l; OR 2·07, 95% CI: 1·51-2·84, P 0·0001), extensive osteolytic activity (OR 2·21, 95% CI: 1·54-3·15, P 0·001), and immunoglobulin A (IgA; OR 1·53, 95% CI: 1·11-2·11, P = 0·009) or the non-secretory type of MM (OR 2·83; 95% CI: 1·32-6·04, P = 0·007) at the time of MM diagnosis to be the main risk factors for secondary EMD development. Newly diagnosed MM (NDMM) patients with subsequent EMD had inferior median progression-free (PFS) and overall (OS) survival when compared to NDMM patients without future EMD [mPFS: 13·8 months (95% CI: 11·4-16·3) vs 18·8 months (95% CI: 17·7-19·9), P = 0·006; mOS: 26·7 months (95% CI: 18·1-35·4) vs 58·7 months (95% CI: 54·8-62·6), P 0·001]. We found that NDMM patients with specific risk factors associated with secondary EMD development have a more aggressive disease course before secondary EMD develops.
Databáze: OpenAIRE