Abstract
Assessment of minimal residual disease (MRD) is becoming standard diagnostic care for potentially curable neoplasms such as some acute leukemias as well as chronic myeloid and lymphocytic leukemia. Although multiple myeloma (MM) remains as an incurable disease, around half of the patients achieve complete remission (CR), and recent data suggests increasing rates of curability with “total-therapy-like” programs. This landscape is likely to be improved with the advent of new antibodies and small molecules. Therefore, conventional serological and morphological techniques have become suboptimal for sensitive evaluation of highly effective treatment strategies. Although, existing data suggests that MRD could be used as a biomarker to evaluate treatment efficacy, help on therapeutic decisions, and act as surrogate for overall survival, the role of MRD in MM is still a matter of extensive debate. Here, we review the different levels of remission used to define depth of response in MM and their clinical significance, as well as the prognostic value and unique characteristics of MRD detection using immunophenotypic, molecular, and imaging techniques.
Key facts
The higher efficacy of new treatment strategies for MM demand the incorporation of highly sensitive techniques to monitor treatment efficacy |
MRD could be used as a more potent surrogate biomarker for survival than standard CR |
We need to understand the pros and cons of the different MRD techniques |
The time has come to incorporate highly sensitive, cost-effective, readily available, and standardized MRD techniques into clinical trials to assess its role in therapeutic decisions |
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References
Alexanian R, Bonnet J, Gehan E, Haut A, Hewlett J, Lane M et al (1972) Combination chemotherapy for multiple myeloma. Cancer 30(2):382–389
Blade J, Samson D, Reece D, Apperley J, Bjorkstrand B, Gahrton G et al (1998) Criteria for evaluating disease response and progression in patients with multiple myeloma treated by high-dose therapy and haemopoietic stem cell transplantation. Myeloma Subcommittee of the EBMT. European Group for Blood and Marrow Transplant. Br J Haematol 102(5):1115–1123
Harousseau JL, Dimopoulos MA, Wang M, Corso A, Chen C, Attal M et al (2010) Better quality of response to lenalidomide plus dexamethasone is associated with improved clinical outcomes in patients with relapsed or refractory multiple myeloma. Haematologica 95(10):1738–1744
Barlogie B, Anaissie E, Haessler J, van Rhee F, Pineda-Roman M, Hollmig K et al (2008) Complete remission sustained 3 years from treatment initiation is a powerful surrogate for extended survival in multiple myeloma. Cancer 113(2):355–359
Paiva B, Gutierrez NC, Rosinol L, Vidriales MB, Montalban MA, Martinez-Lopez J et al (2012) High-risk cytogenetics and persistent minimal residual disease by multiparameter flow cytometry predict unsustained complete response after autologous stem cell transplantation in multiple myeloma. Blood 119(3):687–691
Martinez-Lopez J, Blade J, Mateos MV, Grande C, Alegre A, Garcia-Larana J et al (2011) Long-term prognostic significance of response in multiple myeloma after stem cell transplantation. Blood 118(3):529–534
Barlogie B, Mitchell A, van Rhee F, Epstein J, Morgan GJ, Crowley J (2014) Curing myeloma at last: defining criteria and providing the evidence. Blood 124(20):3043–3051
Durie BG, Harousseau JL, Miguel JS, Blade J, Barlogie B, Anderson K et al (2006) International uniform response criteria for multiple myeloma. Leukemia 20(9):1467–1473
Kapoor P, Kumar SK, Dispenzieri A, Lacy MQ, Buadi F, Dingli D et al (2013) Importance of achieving stringent complete response after autologous stem-cell transplantation in multiple myeloma. J Clin Oncol Official J Am Soc Clin Oncol 31(36):4529–4535
de Larrea CF, Cibeira MT, Elena M, Arostegui JI, Rosinol L, Rovira M et al (2009) Abnormal serum free light chain ratio in patients with multiple myeloma in complete remission has strong association with the presence of oligoclonal bands: implications for stringent complete remission definition. Blood 114(24):4954–4956
Giarin MM, Giaccone L, Sorasio R, Sfiligoi C, Amoroso B, Cavallo F et al (2009) Serum free light chain ratio, total kappa/lambda ratio, and immunofixation results are not prognostic factors after stem cell transplantation for newly diagnosed multiple myeloma. Clin Chem 55(8):1510–1516
Paiva B, Martinez-Lopez J, Vidriales MB, Mateos MV, Montalban MA, Fernandez-Redondo E et al (2011) Comparison of immunofixation, serum free light chain, and immunophenotyping for response evaluation and prognostication in multiple myeloma. J Clin Oncol Official J Am Soc Clin Oncol 29(12):1627–1633
Ludwig H, Milosavljevic D, Zojer N, Faint JM, Bradwell AR, Hubl W et al (2013) Immunoglobulin heavy/light chain ratios improve paraprotein detection and monitoring, identify residual disease and correlate with survival in multiple myeloma patients. Leukemia 27(1):213–219
Tovar N, Fernandez de Larrea C, Elena M, Cibeira MT, Arostegui JI, Rosinol L et al (2012) Prognostic impact of serum immunoglobulin heavy/light chain ratio in patients with multiple myeloma in complete remission after autologous stem cell transplantation. Biol Blood Marrow Transplant 18(7):1076–1079
Rajkumar SV, Harousseau JL, Durie B, Anderson KC, Dimopoulos M, Kyle R et al (2011) Consensus recommendations for the uniform reporting of clinical trials: report of the International Myeloma Workshop Consensus Panel 1. Blood 117(18):4691–4695
Cavo M, Tacchetti P, Patriarca F, Petrucci MT, Pantani L, Galli M et al (2010) Bortezomib with thalidomide plus dexamethasone compared with thalidomide plus dexamethasone as induction therapy before, and consolidation therapy after, double autologous stem-cell transplantation in newly diagnosed multiple myeloma: a randomised phase 3 study. Lancet 376(9758):2075–2085
Richardson PG, Sonneveld P, Schuster MW, Irwin D, Stadtmauer EA, Facon T et al (2005) Bortezomib or high-dose dexamethasone for relapsed multiple myeloma. N Engl J Med 352(24):2487–2498
Dimopoulos M, Spencer A, Attal M, Prince HM, Harousseau JL, Dmoszynska A et al (2007) Lenalidomide plus dexamethasone for relapsed or refractory multiple myeloma. N Engl J Med 357(21):2123–2132
Facon T, Mary JY, Hulin C, Benboubker L, Attal M, Pegourie B et al (2007) Melphalan and prednisone plus thalidomide versus melphalan and prednisone alone or reduced-intensity autologous stem cell transplantation in elderly patients with multiple myeloma (IFM 99-06): a randomised trial. Lancet 370(9594):1209–1218
San Miguel JF, Schlag R, Khuageva NK, Dimopoulos MA, Shpilberg O, Kropff M et al (2008) Bortezomib plus melphalan and prednisone for initial treatment of multiple myeloma. N Engl J Med 359(9):906–917
Rosinol L, Oriol A, Teruel AI, Hernandez D, Lopez-Jimenez J, de la Rubia J et al (2012) Superiority of bortezomib, thalidomide, and dexamethasone (VTD) as induction pretransplantation therapy in multiple myeloma: a randomized phase 3 PETHEMA/GEM study. Blood 120(8):1589–1596
Sonneveld P, Goldschmidt H, Rosinol L, Blade J, Lahuerta JJ, Cavo M et al (2013) Bortezomib-based versus nonbortezomib-based induction treatment before autologous stem-cell transplantation in patients with previously untreated multiple myeloma: a meta-analysis of phase III randomized, controlled trials. J Clin Oncol Official J Am Soc Clin Oncol 31(26):3279–3287
Gay F, Larocca A, Wijermans P, Cavallo F, Rossi D, Schaafsma R et al (2011) Complete response correlates with long-term progression-free and overall survival in elderly myeloma treated with novel agents: analysis of 1175 patients. Blood 117(11):3025–3031
van de Velde HJ, Liu X, Chen G, Cakana A, Deraedt W, Bayssas M (2007) Complete response correlates with long-term survival and progression-free survival in high-dose therapy in multiple myeloma. Haematologica 92(10):1399–1406
Usmani SZ, Crowley J, Hoering A, Mitchell A, Waheed S, Nair B et al (2013) Improvement in long-term outcomes with successive Total Therapy trials for multiple myeloma: are patients now being cured? Leukemia 27(1):226–232
Nooka AK, Kaufman JL, Muppidi S, Langston A, Heffner LT, Gleason C et al (2014) Consolidation and maintenance therapy with lenalidomide, bortezomib and dexamethasone (RVD) in high-risk myeloma patients. Leukemia 28(3):690–693
Stewart AK, Rajkumar SV, Dimopoulos MA, Masszi T, Spicka I, Oriol A et al (2015) Carfilzomib, lenalidomide, and dexamethasone for relapsed multiple myeloma. N Engl J Med 372(2):142–152
Morgan GJ, Davies FE, Gregory WM, Russell NH, Bell SE, Szubert AJ et al (2011) Cyclophosphamide, thalidomide, and dexamethasone (CTD) as initial therapy for patients with multiple myeloma unsuitable for autologous transplantation. Blood 118(5):1231–1238
Palumbo A, Cavallo F, Gay F, Di Raimondo F, Ben Yehuda D, Petrucci MT et al (2014) Autologous transplantation and maintenance therapy in multiple myeloma. N Engl J Med 371(10):895–905
Paiva B, Vidriales MB, Rosinol L, Martinez-Lopez J, Mateos MV, Ocio EM et al (2013) A multiparameter flow cytometry immunophenotypic algorithm for the identification of newly diagnosed symptomatic myeloma with an MGUS-like signature and long-term disease control. Leukemia 27(10):2056–2061
Zhan F, Barlogie B, Arzoumanian V, Huang Y, Williams DR, Hollmig K et al (2007) Gene-expression signature of benign monoclonal gammopathy evident in multiple myeloma is linked to good prognosis. Blood 109(4):1692–1700
Rawstron AC, Gregory WM, de Tute RM, Davies FE, Bell SE, Drayson MT et al (2015) Minimal residual disease in myeloma by flow cytometry: independent prediction of survival benefit per log reduction. Blood 125(12):1932–1935
Martinez-Lopez J, Lahuerta JJ, Pepin F, Gonzalez M, Barrio S, Ayala R et al (2014) Prognostic value of deep sequencing method for minimal residual disease detection in multiple myeloma. Blood 123(20):3073–3079
Ladetto M, Pagliano G, Ferrero S, Cavallo F, Drandi D, Santo L et al (2010) Major tumor shrinking and persistent molecular remissions after consolidation with bortezomib, thalidomide, and dexamethasone in patients with autografted myeloma. J Clin Oncol 28(12):2077–2084
Paiva B, Puig N, Garcia-Sanz R, San Miguel JF (2015) Is this the time to introduce minimal residual disease in multiple myeloma clinical practice? Clin Cancer Res
San Miguel JF, Almeida J, Mateo G, Blade J, Lopez-Berges C, Caballero D et al (2002) Immunophenotypic evaluation of the plasma cell compartment in multiple myeloma: a tool for comparing the efficacy of different treatment strategies and predicting outcome. Blood 99(5):1853–1856
Rawstron AC, Davies FE, DasGupta R, Ashcroft AJ, Patmore R, Drayson MT et al (2002) Flow cytometric disease monitoring in multiple myeloma: the relationship between normal and neoplastic plasma cells predicts outcome after transplantation. Blood 100(9):3095–3100
Paiva B, Vidriales MB, Cervero J, Mateo G, Perez JJ, Montalban MA et al (2008) Multiparameter flow cytometric remission is the most relevant prognostic factor for multiple myeloma patients who undergo autologous stem cell transplantation. Blood 112(10):4017–4023
Rawstron AC, Child JA, de Tute RM, Davies FE, Gregory WM, Bell SE et al (2013) Minimal residual disease assessed by multiparameter flow cytometry in multiple myeloma: impact on outcome in the Medical Research Council Myeloma IX Study. J Clin Oncol Official J Am Soc Clin Oncol 31(20):2540–2547
Mateos MV, Oriol A, Martinez-Lopez J, Teruel AI, Lopez de la Guia A, Lopez J et al (2014) Update of the GEM2005 trial comparing VMP/VTP as induction in elderly multiple myeloma patients: do we still need alkylators? Blood
Thiago LS, Perez-Andres M, Balanzategui A, Sarasquete ME, Paiva B, Jara-Acevedo M et al (2014) Circulating clonotypic B cells in multiple myeloma and monoclonal gammopathy of undetermined significance. Haematologica 99(1):155–162
Roussel M, Lauwers-Cances V, Robillard N, Hulin C, Leleu X, Benboubker L et al (2014) Front-line transplantation program with lenalidomide, bortezomib, and dexamethasone combination as induction and consolidation followed by lenalidomide maintenance in patients with multiple myeloma: a phase II study by the Intergroupe Francophone du Myelome. J Clin Oncol 32(25):2712–2717
Paiva (2014) Haematologica. 2015 Feb 100(2):e53–5. Epub 2014 Nov 7. No abstract available. PMID: 25381128 . doi: 10.3324/haematol.2014.115162
Martinelli G, Terragna C, Zamagni E, Ronconi S, Tosi P, Lemoli RM et al (2000) Molecular remission after allogeneic or autologous transplantation of hematopoietic stem cells for multiple myeloma. J Clin Oncol 18(11):2273–2281
Bakkus (2004) Br J Haematol. 2004 Sept 126(5):665–74. PMID: 15327517
Galimberti (2005) Leuk Res. 2005 Aug 29(8):961–6. PMID: 15978948
Sarasquete ME, Garcia-Sanz R, Gonzalez D, Martinez J, Mateo G, Martinez P et al (2005) Minimal residual disease monitoring in multiple myeloma: a comparison between allelic-specific oligonucleotide real-time quantitative polymerase chain reaction and flow cytometry. Haematologica 90(10):1365–1372
Martinez-Sanchez P, Montejano L, Sarasquete ME, Garcia-Sanz R, Fernandez-Redondo E, Ayala R et al (2008) Evaluation of minimal residual disease in multiple myeloma patients by fluorescent-polymerase chain reaction: the prognostic impact of achieving molecular response. Br J Haematol 142(5):766–774
Putkonen M, Kairisto V, Juvonen V, Pelliniemi TT, Rauhala A, Itala-Remes M et al (2010) Depth of response assessed by quantitative ASO-PCR predicts the outcome after stem cell transplantation in multiple myeloma. Eur J Haematol 85(5):416–423
Ferrero (2014) Leukemia. 2015 Mar 29(3):689–95. Epub 2014 Jul 16. PMID: 25027515. doi: 10.1038/leu.2014.219
Puig N, Sarasquete ME, Balanzategui A, Martinez J, Paiva B, Garcia H et al (2014) Critical evaluation of ASO RQ-PCR for minimal residual disease evaluation in multiple myeloma. A comparative analysis with flow cytometry. Leukemia 28(2):391–397
Silvennoinen R, Lundan T, Kairisto V, Pelliniemi TT, Putkonen M, Anttila P et al (2014) Comparative analysis of minimal residual disease detection by multiparameter flow cytometry and enhanced ASO RQ-PCR in multiple myeloma. Blood Cancer J 10(4):e250
Hillengass J, Ayyaz S, Kilk K, Weber MA, Hielscher T, Shah R et al (2012) Changes in magnetic resonance imaging before and after autologous stem cell transplantation correlate with response and survival in multiple myeloma. Haematologica 97(11):1757–1760
Zamagni E, Patriarca F, Nanni C, Zannetti B, Englaro E, Pezzi A et al (2011) Prognostic relevance of 18-F FDG PET/CT in newly diagnosed multiple myeloma patients treated with up-front autologous transplantation. Blood 118(23):5989–5995
Flanders A, Stetler-Stevenson M, Landgren O (2013) Minimal residual disease testing in multiple myeloma by flow cytometry: major heterogeneity. Blood 122(6):1088–1089
Pedreira CE, Costa ES, Lecrevisse Q, van Dongen JJ, Orfao A (2013) EuroFlow consortium. Overview of clinical flow cytometry data analysis: recent advances and future challenges. Trends Biotechnol 31(7):415–425
van der Velden VH, Hochhaus A, Cazzaniga G, Szczepanski T, Gabert J, van Dongen JJ (2003) Detection of minimal residual disease in hematologic malignancies by real-time quantitative PCR: principles, approaches, and laboratory aspects. Leukemia 17(6):1013–1034
Corradini P, Carniti C (2014) Molecular methods for detection of minimal residual disease following transplantation in lymphoid and plasma cell disorders. Methods Mol Biol 1109:209–237
Korthals M, Sehnke N, Kronenwett R, Schroeder T, Strapatsas T, Kobbe G et al (2013) Molecular monitoring of minimal residual disease in the peripheral blood of patients with multiple myeloma. Biol Blood Marrow Transplant 19(7):1109–1115
Lipinski E, Cremer FW, Ho AD, Goldschmidt H, Moos M (2001) Molecular monitoring of the tumor load predicts progressive disease in patients with multiple myeloma after high-dose therapy with autologous peripheral blood stem cell transplantation. Bone Marrow Transplant 28(10):957–962
Ferrero S, Ladetto M, Drandi D, Cavallo F, Genuardi E, Urbano M et al (2015) Long-term results of the GIMEMA VEL-03-096 trial in MM patients receiving VTD consolidation after ASCT: MRD kinetics’ impact on survival. Leukemia 29(3):689–695
Gambella M, Omedè P, Oliva S, Gilestro M, Muccio VE, Drandi D et al (2014) In Multiple Myeloma, Minimal Residual Disease (MRD) Is an Early Predictor of Progression and Is Modulated By Maintenance Therapy with Lenalidomide. Blood Am Soc Hematol 124(21):3394–3394
Langerak AW, Groenen PJ, Bruggemann M, Beldjord K, Bellan C, Bonello L et al (2012) EuroClonality/BIOMED-2 guidelines for interpretation and reporting of Ig/TCR clonality testing in suspected lymphoproliferations. Leukemia 26(10):2159–2171
Biran N, Ely S, Chari A (2014) Controversies in the assessment of minimal residual disease in multiple myeloma: clinical significance of minimal residual disease negativity using highly sensitive techniques. Curr Hematol Malign Rep 9(4):368–378
Garcia-Sanz R, Lopez-Perez R, Langerak AW, Gonzalez D, Chillon MC, Balanzategui A et al (1999) Heteroduplex PCR analysis of rearranged immunoglobulin genes for clonality assessment in multiple myeloma. Haematologica 84(4):328–335
Gonzalez D, Garcia-Sanz R (2005) Incomplete DJH rearrangements. Methods Mol Med 113:165–173
Puig N, Sarasquete ME, Alcoceba M, Balanzategui A, Chillon MC, Sebastian E et al (2013) The use of CD138 positively selected marrow samples increases the applicability of minimal residual disease assessment by PCR in patients with multiple myeloma. Ann Hematol 92(1):97–100
Boyd SD, Gaeta BA, Jackson KJ, Fire AZ, Marshall EL, Merker JD et al (2010) Individual variation in the germline Ig gene repertoire inferred from variable region gene rearrangements. J Immunol 184(12):6986–6992
Freeman JD, Warren RL, Webb JR, Nelson BH, Holt RA (2009) Profiling the T-cell receptor beta-chain repertoire by massively parallel sequencing. Genome Res 19(10):1817–1824
Robins H, Desmarais C, Matthis J, Livingston R, Andriesen J, Reijonen H et al (2012) Ultra-sensitive detection of rare T cell clones. J Immunol Methods 375(1–2):14–19
Logan AC, Zhang B, Narasimhan B, Carlton V, Zheng J, Moorhead M et al (2013) Minimal residual disease quantification using consensus primers and high-throughput IGH sequencing predicts post-transplant relapse in chronic lymphocytic leukemia. Leukemia 27(8):1659–1665
Faham M, Zheng J, Moorhead M, Carlton VE, Stow P, Coustan-Smith E et al (2012) Deep-sequencing approach for minimal residual disease detection in acute lymphoblastic leukemia. Blood 120(26):5173–5180
Boyd SD, Marshall EL, Merker JD, Maniar JM, Zhang LN, Sahaf B et al (2009) Measurement and clinical monitoring of human lymphocyte clonality by massively parallel VDJ pyrosequencing. Sci Transl Med 1(12):12ra23
Puig N, Conde I, Jimenez C, Sarasquete ME, Balanzategui A, Alcoceba M et al (2015) The predominant myeloma clone at diagnosis, CDR3 defined, is constantly detectable across all stages of disease evolution. Leukemia
Munshi NC, Minvielle S, Tai Y, Fulciniti M, Richardson PG, Attal M et al (2014) Deep sequencing of immunoglobulin loci reveals evolution of IgH clone in multiple myeloma patients over the course of treatment. Blood Am Soc Hematol 124(21):2005–2005
Avet-Loiseau H, Corre J, Maheo S, Zheng J, Faham M, Richardson PG et al (2014) Identification rate of myeloma-specific clonotypes in multiple diagnostic sample types from patients with multiple myeloma using next-generation sequencing method. Blood Am Soc Hematol 124(21):2036–2036
van Dongen JJ, Langerak AW, Bruggemann M, Evans PA, Hummel M, Lavender FL et al (2003) Design and standardization of PCR primers and protocols for detection of clonal immunoglobulin and T-cell receptor gene recombinations in suspect lymphoproliferations: report of the BIOMED-2 Concerted Action BMH4-CT98-3936. Leukemia 17(12):2257–2317
Takamatsu H, Murata R, Zheng J, Moorhead M, Takezako N, Ito S et al (2014) Prognostic value of sequencing-based minimal residual disease detection in multiple myeloma. Blood Am Soc Hematol 124(21):2003–2003
Jasielec J, Dytfeld D, Griffith KA, McDonnell K, Lebovic D, Kandarpa M et al (2014) Minimal residual disease status predicts progression-free survival in Newly Diagnosed Multiple Myeloma (NDMM) patients treated with carfilzomib, lenalidomide, and low-dose dexamethasone (KRd). Blood Am Soc Hematol 124(21):2127–2127
Bartel TB, Haessler J, Brown TL, Shaughnessy JD Jr, van Rhee F, Anaissie E et al (2009) F18-fluorodeoxyglucose positron emission tomography in the context of other imaging techniques and prognostic factors in multiple myeloma. Blood 114(10):2068–2076
Zamagni E, Cavo M (2012) The role of imaging techniques in the management of multiple myeloma. Br J Haematol 159(5):499–513
Bauerle T, Hillengass J, Fechtner K, Zechmann CM, Grenacher L, Moehler TM et al (2009) Multiple myeloma and monoclonal gammopathy of undetermined significance: importance of whole-body versus spinal MR imaging. Radiology 252(2):477–485
Caers J, Withofs N, Hillengass J, Simoni P, Zamagni E, Hustinx R et al (2014) The role of positron emission tomography-computed tomography and magnetic resonance imaging in diagnosis and follow up of multiple myeloma. Haematologica 99(4):629–637
Hillengass J, Bauerle T, Bartl R, Andrulis M, McClanahan F, Laun FB et al (2011) Diffusion-weighted imaging for non-invasive and quantitative monitoring of bone marrow infiltration in patients with monoclonal plasma cell disease: a comparative study with histology. Br J Haematol 153(6):721–728
Roschewski M, Dunleavy K, Pittaluga S, Moorhead M, Pepin F, Kong K et al (2015) Circulating tumour DNA and CT monitoring in patients with untreated diffuse large B-cell lymphoma: a correlative biomarker study. Lancet Oncol
Kubiczkova-Besse L, Drandi D, Sedlarikova L, Oliva S, Gambella M, Omedè P et al (2014) Cell-free DNA for minimal residual disease monitoring in multiple myeloma patients. Blood Am Soc Hematol 124(21):3423–3423
Korde N, Mailankody S, Roschewski M, Faham M, Kotwaliwale C, Moorhead M et al (2014) Minimal Residual Disease (MRD) Testing in newly diagnosed multiple myeloma (MM) patients: a prospective head-to-head assessment of cell-based, molecular, and molecular-imaging modalities
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Paiva, B., García-Sanz, R., San Miguel, J.F. (2016). Multiple Myeloma Minimal Residual Disease. In: Roccaro, A., Ghobrial, I. (eds) Plasma Cell Dyscrasias. Cancer Treatment and Research, vol 169. Springer, Cham. https://doi.org/10.1007/978-3-319-40320-5_7
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