Multiple Myeloma (MM) Profile in Brazil: A Retrospective Observational Analysis

MM clinical characteristics upon diagnosis were classified by eligibility criteria for transplantation (eligible/not eligible) and included: presence of plasma cells in the bone marrow by biopsy and aspiration, bone or extramedullary biopsy, plasma cells determined by immunohistochemistry (Yes/No/Unknown), plasma cells determined by flow cytometry (Yes/No/Unknown) hypercalcemia, renal failure, anemia, and bone lesions features (more than one focal lesion on magnetic resonance imaging (MRI) that is at least 5 mm or greater in size), presence of monoclonal proteins (immunoglobulin (Ig)G, IgG kappa, IgG lambda, IgA, IgA kappa, IgA lambda, kappa only, lambda only, IgD, IgE, IgM, Non-secretory and Unknown), free light chain ratio (serum involved / uninvolved free light chain ratio of 100 or greater, provided the absolute level of the involved light chain is at least 100 mg/L). Only categories with data are reported. Participants were counted multiple times in different categories.

Time frame: From initial diagnosis up to end of follow up treatment or to the retrospective cut-off date within the time of interest (between January 1, 2008, and December 31, 2016) [approximately 11.7 years]

Population: All participants eligible for analyses were included. Number analyzed are the participants with data available for analyses of the specific category.

Treatment patterns were collected from institutional charts \[included public institution, private institution and both (90% public and 10% private) institutions\] of participants in Brazil. The treatment patterns were collected as induction treatment, consolidation treatment, maintenance treatment performed at Baseline (at initial diagnosis) and as a induction treatment, maintenance treatment and type of treatment performed after transplantation, for second to tenth line of treatment. Only categories with data are reported. Participants were counted multiple times in different categories.

Time frame: From initial diagnosis up to end of follow up treatment or to the retrospective cut-off date within the time of interest (between January 1, 2008, and December 31, 2016) [approximately 11.7 years]

Population: All participants eligible for analyses were included. Number analyzed are the number of participants with evaluable data for given category.

Duration of treatment was defined with respect to selected lines or regimens of interest, considering the time elapsed from each treatment initiation to discontinuation, and censoring participants who lost to follow-up before discontinuation. Duration of treatment was classified by participants eligibility- eligible/not eligible for transplantation. The deaths occurred after treatment initiation to end of study are reported in categories 'Since Diagnosis to Death-Eligible and Not Eligible'.

Time frame: From treatment initiation up to discontinuation of treatment or lost to follow-up, whichever occurs first up to the end of this study (up to 11.7 years)

Population: All participants eligible for analyses who had non-missing observations were analyzed. Number analyzed is the number of participants with data available for given category.

Overall survival was defined as the time elapsed between the date of diagnosis until death, with censoring of participants who were alive when last seen or who lost to follow up.

Time frame: From the date of diagnosis up to death within the period of interest (between January 1, 2008, and December 31, 2016) or up to the end of this study [up to 11.7 years]

Population: All participants eligible for analyses who had non-missing observations were analyzed. Number analyzed is the number of participants with data available for given category.