PurposeThe aim of the International Myeloma Working Group was to develop practical recommendations for the diagnosis and management of multiple myeloma–related renal impairment (RI).MethodsRecommendations were based on published data through December 2015, and were developed using the system developed by the Grading of Recommendation, Assessment, Development, and Evaluation Working Group.RecommendationsAll patients with myeloma at diagnosis and at disease assessment should have serum creatinine, estimated glomerular filtration rate, and electrolytes measurements as well as free light chain, if available, and urine electrophoresis of a sample from a 24-hour urine collection (grade A). The Chronic Kidney Disease Epidemiology Collaboration, preferably, or the Modification of Diet in Renal Disease formula should be used for the evaluation of estimated glomerular filtration rate in patients with stabilized serum creatinine (grade A). International Myeloma Working Group criteria for renal reversibility should b...

https://ascopubs.org/doi/pdf/10.1200/JCO.2015.65.0044

International Myeloma Working Group Recommendations for the Diagnosis and Management of Myeloma-Related Renal Impairment

Here, the International Myeloma Working Group (IMWG) updates its clinical practice recommendations for the management of multiple myeloma-related renal impairment on the basis of data published until Dec 31, 2022. All patients with multiple myeloma and renal impairment should have serum creatinine, estimated glomerular filtration rate, and free light chains (FLCs) measurements together with 24-h urine total protein, electrophoresis, and immunofixation. If non-selective proteinuria (mainly albuminuria) or involved serum FLCs value less than 500 mg/L is detected, then a renal biopsy is needed. The IMWG criteria for the definition of renal response should be used. Supportive care and high-dose dexamethasone are required for all patients with myeloma-induced renal impairment. Mechanical approaches do not increase overall survival. Bortezomib-based regimens are the cornerstone of the management of patients with multiple myeloma and renal impairment at diagnosis. New quadruplet and triplet combinations, including proteasome inhibitors, immunomodulatory drugs, and anti-CD38 monoclonal antibodies, improve renal and survival outcomes in both newly diagnosed patients and those with relapsed or refractory disease. Conjugated antibodies, chimeric antigen receptor T-cells, and T-cell engagers are well tolerated and effective in patients with moderate renal impairment. 

Management of multiple myeloma-related renal impairment: recommendations from the International Myeloma Working Group

Anti-B cell maturation antigen (BCMA) chimeric antigen receptor (CAR) T-cell therapy is effective and well-tolerated for refractory or relapsed multiple myeloma (RRMM). The purpose of the present study was to analyze efficacy in RRMM patients with renal impairment treated by anti-BCMA CAR-T cell therapy. A total of 59 RRMM patients were selected, and divided into impaired renal function (IRF) group [baseline estimated glomerular filtration rate (eGFR) < 90 mL/min/1.73 m2 (n=18)] and normal renal function (NRF) group (baseline eGFR ≥ 90 mL/min/1.73 m2, n=41). For patients with IRF, eGFR at the 6th month post-CAR-T cells infusion was significantly higher than the baseline (P<0.05). The multivariate analysis showed that light chain type and beta-2 micro-globulin (beta-2M) were associated factors with the decrease of serum creatinine. Median progression-free survival (PFS) in the NRF group and IRF group was 266 days and 181 days respectively. Overall survival (OS) in the NRF group and IRF group was 877 days and 238 days respectively. There was no significant difference in the objective response rate (ORR) between the IRF group and the NRF group. It is suggested that CAR-T cells therapy could improve the renal function during the treatment of RRMM. The renal function could be more significantly improved in RRMM patients with light chain type than with other types.

Anti-BCMA CAR-T Cell Therapy in Relapsed or Refractory Multiple Myeloma Patients with Impaired Renal Function

Renal failure (RF) is detected in 20-30% of patients at the onset of multiple myeloma (MM), in 50% of patients during its progression. The advent of new, highly effective agents has considerably expanded the possibilities of treatment in MM patients. Unfortunately, patients with RF, especially those with severe RF, were not included in the majority of investigations. The available data are based on the results of treatment in small groups of patients generally without the morphological identification of nephropathies, with varying severity of RF, which explains significant differences in renal response rates. This review analyzes the results of the most important studies and gives recommendations for treatment in accordance with national and international standards.

https://ter-arkhiv.ru/0040-3660/article/viewFile/32320/pdf

[Current approaches to treating of patients with multiple myeloma with renal failure: Questions and proofs].

Renal impairment (RI) is a relatively common complication of multiple myeloma, which increases in frequency as disease becomes more advanced and recovery of renal function becomes less likely as patients progress through lines of therapy. Clinical trials in the relapsed/refractory multiple myeloma (RRMM) setting have not uniformly included patients with RI or robustly reported their outcomes. Here, we review existing data among patients with RI and RRMM across drug classes (including immunomodulatory agents, proteasome inhibitors, monoclonal antibodies, antibody-drug conjugates, chimeric antigen receptor T-cell therapies, and exportin-1 inhibitor) to provide an improved understanding of available treatment options for this important population. We highlight data from pivotal clinical trials, including data relating to renal response (as defined by the International Myeloma Working Group) and discuss real-world experiences in patients with RI, where applicable. Despite substantial advances in RRMM treatment, the presence of RI remains associated with reduced overall survival. Consistent inclusion of patients with RI, and uniform reporting of their outcomes, should be encouraged in future prospective trials of treatments for RRMM.

An overview of treatment options for patients with relapsed/refractory multiple myeloma and renal impairment

Lower starting doses of lenalidomide (LEN) are recommended for patients with renal impairment (RI). In the present study, we conducted a subgroup analysis of the MM-021 registration trial to investigate the efficacy and safety of LEN plus low-dose dexamethasone (LoDEX) in Chinese patients with advanced relapsed or refractory multiple myeloma (RRMM) based on levels of RI. Patients received LEN+LoDEX until disease progression or discontinuation. Patients were divided according to RI: no/mild [creatinine clearance (CrCl) ≥60 mL/min, n = 131], moderate (CrCl ≥30 to <60 mL/min, n = 54), and severe (CrCl <30 mL/min, n = 14). LEN starting dose was 25 mg/day on days 1–21, adjusted for baseline renal function. Best overall response rate was 48 %; in patients with no/mild, moderate, or severe RI, response rates were 50, 42, and 42 %, respectively. Median progression-free survival and overall survival were longer in patients with no/mild RI (9.3 and 22.4 months, respectively) versus those with moderate (6.9 and 16.0 months) or severe RI (4.8 and 11.1 months). LEN+LoDEX was well tolerated, although incidences of grade 3–4 neutropenia, anemia, and thrombocytopenia were higher in patients with severe RI. In Chinese patients with advanced RRMM and RI, adjusting the starting dose of LEN according to renal function did not compromise the efficacy or safety of LEN+LoDEX.

Lenalidomide plus low-dose dexamethasone in Chinese patients with relapsed or refractory multiple myeloma and renal impairment

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Lenalidomide plus low-dose dexamethasone in Chinese patients with relapsed or refractory multiple myeloma and renal impairment