Beschreibung:
<jats:p> e19536 </jats:p><jats:p> Background: Multiple Myeloma (MM) is a heterogeneous disease. High Risk (HR) MM is defined as the presence of abnormal cytogenetics i.e. t(4:14), t(14:16), t(14:20), del(17/17p), non hyperdiploidy and gain (1q). HR MM is a treatment challenge. We aim to explore efficacy of anti-myeloma therapy for newly diagnosed (ND) and relapsed/refractory (RR) HR MM. Methods: We used Pubmed, Ebsco and MBASE to select 18 trials with outcome data on ND (n = 598) and RR(n = 726) HR MM (n = 1321), after extensive review, treatment efficacy (CR, VGPR, ORR) and survival (mPFS, OS) data was extracted. Results: In HR MM the range of overall response rate (ORR) was 31%-100% (Standard Risk (SR): 56%-94.7%), complete response (CR) was 10%-58.3% (SR: 7%-38.1%) and very good partial response (VGPR) was 15%-88.3% (SR: 25%-63%). In ND HR patients, range of ORR was 71.2% - 86.2% (SR: 71.2% - 91.7%) and CR was 35% - 58.3% (SR: 22%-35%) and median progression free survival (mPFS) was 18 months (m) - 31.3m (SR: 31.3m – Not Reached). In RR HR patients, range of ORR was 31% – 85.2% (SR: 56%-94.7%) and CR was 10%-29.2% (SR: 7%-38.1%) and mPFS was 3.3m - 23.1m (SR: 4m - Not Reached). In RR HR MM, Daratumumab ( Dara) , lenalidomide (R) and dexamethasone (d) combination resulted in highest minimal residual disease (MRD) negativity 21.4%. In RR HR, Carfilzomib (Car)- R-d resulted in the longest mPFS of 23.1m (SR: 29.6m) followed by (Dara)-R-d of 22.6m (SR:NR) and Ixazomib (I)- R-d of 21.4m (SR:20.6). In ND HR, Bortezomib (V) with thalidomide (T)- d resulted in longest mPFS of 23.5m (SR: NR) and OS of 56.6m followed by Cyclophosphamide (Cy)-T-d of 20m (SR:34m) and (Dara)-V- Melphalan(M) and Prednisone of 18m (SR:NR). Quadruplet therapy in ND with Cy- V – d with pegylated liposomal doxorubicin resulted in the highest CR 58.3% and mPFS of 31.3m (~8m longer). Conclusions: Cytogenetically HR MM achieved high ORR, CR and VGPR similar to SR MM yet, the PFS and OS in HR (mPFS: 11.2m - 31.3m) was significantly shorter than SR (mPFS: 19m - Not Reached) representing poor prognosis. Promising strategies and targeted therapies that are currently evolving include antibody based combination therapy (3 or 4 drugs), various CAR-T cells constructs, targeted inhibitors, and antibody-drug conjugates. </jats:p>