Part 1: Duration of Response (DoR) Per IMWG as Assessed by IRC
IRC assessed DoR per 2016 IMWG criteria: time (in months) from the first documentation of objective response (confirmed CR or PR) to the date of first documentation of progressive disease (PD) or death due to any cause. Partial response (PR): >= 50% reduction of serum M-Protein and reduction in 24-hour urinary M-protein by >= 90% or to < 200 mg per 24 hours; Complete response (CR): Negative immunofixation on the serum and urine and disappearance of any soft tissue plasmacytomas and <= 5% plasma cells in bone marrow; Progressive disease (PD): Increase of 25% from lowest confirmed response value in 1 or more of the following criteria: Serum M-protein with absolute increase of >= 0.5 gram per deciliter (g/dL); Serum M-protein increase >= 1 g/dL if the lowest M-component was >=5 g/dL; Urine M-protein (absolute increase must be >= 200 mg per 24 hours). Analysis was performed using Kaplan-Meier method.
Part 2: Duration of Response (DoR) Per IMWG as Assessed by an IRC
IRC assessed DoR per 2016 IMWG criteria: time (in months) from the first documentation of objective response (confirmed CR or PR) to the date of first documentation of progressive disease (PD) or death due to any cause. Partial response (PR): >= 50% reduction of serum M-Protein and reduction in 24-hour urinary M-protein by >= 90% or to < 200 mg per 24 hours; Complete response (CR): Negative immunofixation on the serum and urine and disappearance of any soft tissue plasmacytomas and <= 5% plasma cells in bone marrow; Progressive disease (PD): Increase of 25% from lowest confirmed response value in 1 or more of the following criteria: Serum M-protein with absolute increase of >= 0.5 g/dL; Serum M-protein increase >= 1 g/dL if the lowest M-component was >= 5 g/dL; Urine M-protein (absolute increase must be >= 200 mg per 24 hours). Analysis was performed using Kaplan-Meier method.
Part 1: Percentage of Participants With Clinical Benefit Rate (CBR) ) Per IMWG as Assessed by IRC
IRC assessed CBR per 2016 IMWG criteria: Percentage of participants with a confirmed minimal response (MR) or better (PR, VGPR, CR or sCR) before confirmed disease progression or initiating new MM treatment. Minimal response (MR): >= 25% but < 49% reduction of serum M-protein and reduction in 24-hour urinary M-protein by 50-89%. Partial response (PR): >= 50% reduction of serum M-Protein and reduction in 24-hour urinary M-protein by >= 90% or to < 200 mg per 24 hours; Very good partial response (VGPR): Serum and urine M-protein detectable by immunofixation but not on electrophoresis or 90% or greater reduction in serum M-protein plus urine M-protein level < 100 mg per 24 hours; Complete response (CR): Negative immunofixation on the serum and urine and disappearance of any soft tissue plasmacytomas and <= 5% plasma cells in bone marrow; or stringent complete response (sCR): CR as defined+Normal free light chain (FLC) ratio+Absence of clonal cells by immunohistochemistry).
Part 2: Percentage of Participants With Clinical Benefit Rate (CBR) Per IMWG as Assessed by IRC
IRC assessed CBR per 2016 IMWG criteria: Percentage of participants with a confirmed minimal response (MR) or better (PR, VGPR, CR or sCR) before confirmed disease progression or initiating new MM treatment. Minimal response (MR): >= 25% but < 49% reduction of serum M-protein and reduction in 24-hour urinary M-protein by 50-89%. Partial response (PR): >= 50% reduction of serum M-Protein and reduction in 24-hour urinary M-protein by >= 90% or to < 200 mg per 24 hours; Very good partial response (VGPR): Serum and urine M-protein detectable by immunofixation but not on electrophoresis or 90% or greater reduction in serum M-protein plus urine M-protein level < 100 mg per 24 hours; Complete response (CR): Negative immunofixation on the serum and urine and disappearance of any soft tissue plasmacytomas and <= 5% plasma cells in bone marrow; or stringent complete response (sCR): CR as defined+Normal free light chain (FLC) ratio+Absence of clonal cells by immunohistochemistry).
Part 1: Duration of Clinical Benefit Per IMWG as Assessed by IRC
IRC assessed duration of clinical benefit per 2016 IMWG criteria: Duration from first response (at least MR) to time of IRC-determined PD or death due to disease progression, whichever occurs first. Minimal response (MR): >= 25% but < 49% reduction of serum M-protein and reduction in 24-hour urinary M-protein by 50-89%. Progressive disease (PD): Increase of 25% from lowest confirmed response value in 1 or more of the following criteria: Serum M-protein with absolute increase of >= 0.5 g/dL; Serum M-protein increase >= 1 g/dL if the lowest M-component was >=5 g/dL; Urinary M-protein (absolute increase must be >= 200 mg per 24 hours). Analysis was performed using Kaplan-Meier method.
Part 2: Duration of Clinical Benefit Per IMWG as Assessed by IRC
IRC assessed duration of clinical benefit per 2016 IMWG criteria: Duration from first response (at least MR) to time of IRC-determined PD or death due to disease progression, whichever occurs first. Minimal response (MR): >= 25% but < 49% reduction of serum M-protein and reduction in 24-hour urinary M-protein by 50-89%. Progressive disease (PD): Increase of 25% from lowest confirmed response value in 1 or more of the following criteria: Serum M-protein with absolute increase of >= 0.5 g/dL; Serum M-protein increase >= 1 g/dL if the lowest M-component was >=5 g/dL; Urinary M-protein (absolute increase must be >= 200 mg per 24 hours). Analysis was performed using Kaplan-Meier method.
Part 2: Disease Control Rate (DCR)
DCR was defined as the percentage of participants who achieved stable disease (SD) or better (MR, PR, VGPR, CR, sCR) for a minimum of 12 weeks. Stable disease (SD): Not recommended for use as an indicator of response; stability of disease was best described by providing the time to progression (TTP) estimates. MR: >= 25% but < 49% reduction of serum M-protein and reduction in 24-hour urinary M-protein by 50-89%. PR: >=50% reduction of serum M-Protein and reduction in 24-hour urinary M-protein by >= 90% or to < 200 mg per 24 hours; VGPR: Serum and urine M-protein detectable by immunofixation but not on electrophoresis or 90% or greater reduction in serum M-protein plus urine M-protein level < 100 mg per 24 hours; CR: Negative immunofixation on the serum and urine and disappearance of any soft tissue plasmacytomas and <= 5% plasma cells in bone marrow; or sCR: CR as defined+Normal FLC ratio+Absence of clonal cells by immunohistochemistry).
Part 1: Progression Free Survival (PFS) Per IMWG as Assessed by IRC
IRC assessed PFS per 2016 IMWG criteria: Duration from start of study treatment until IRC-determined progressive disease (PD) or death from any cause, whichever occurred first. Progressive disease (PD): Increase of 25% from lowest confirmed response value in 1 or more of the following criteria: Serum M-protein with absolute increase of >= 0.5 g/dL; Serum M-protein increase >=1 g/dL if the lowest M-component was >= 5 g/dL; Urinary M-protein (absolute increase must be >= 200 mg/24 hours). Analysis was performed using Kaplan-Meier method.
Part 2: Progression Free Survival (PFS) Per IMWG as Assessed by IRC
IRC assessed PFS per 2016 IMWG criteria: Duration from start of study treatment until IRC-determined progressive disease (PD) or death from any cause, whichever occurred first. Progressive disease (PD): Increase of 25% from lowest confirmed response value in 1 or more of the following criteria: Serum M-protein with absolute increase of >= 0.5 g/dL; Serum M-protein increase >=1 g/dL if the lowest M-component was >= 5 g/dL; Urinary M-protein (absolute increase must be >= 200 mg/24 hours). Analysis was performed using Kaplan-Meier method.
Part 1: Time to Progression (TTP) Per IMWG as Assessed by IRC
IRC assessed TTP per 2016 IMWG criteria: Duration from start of study treatment until PD or death due to PD (per IRC), whichever occurred first. Progressive disease (PD): Increase of 25% from lowest confirmed response value in 1 or more of the following criteria: Serum M-protein with absolute increase of >= 0.5 g/dL; Serum M-protein increase >=1 g/dL if the lowest M-component was >= 5 g/dL; Urinary M-protein (absolute increase must be >= 200 mg/24 hours). Analysis was performed using Kaplan-Meier method.
Part 2: Time to Progression (TTP) Per IMWG as Assessed by IRC
IRC assessed TTP per 2016 IMWG criteria: Duration from start of study treatment until PD or death due to PD (per IRC), whichever occurred first. Progressive disease (PD): Increase of 25% from lowest confirmed response value in 1 or more of the following criteria: Serum M-protein with absolute increase of >= 0.5 g/dL; Serum M-protein increase >=1 g/dL if the lowest M-component was >= 5 g/dL; Urinary M-protein (absolute increase must be >= 200 mg/24 hours). Analysis was performed using Kaplan-Meier method.
Part 1: Time to Next Treatment (TTNT)
TTNT was defined as the duration from start of study treatment to start of next anti-MM treatment or death due to disease progression, whichever occurred first. Analysis was performed using Kaplan-Meier method.
Part 2: Time to Next Treatment (TTNT)
TTNT was defined as the duration from start of study treatment to start of next anti-MM treatment or death due to disease progression, whichever occurred first. Analysis was performed using Kaplan-Meier method.
Part 1: Overall Survival (OS)
OS was defined as the duration (in months) from start of study treatment to death from any cause. Participants last known to be alive were censored at the date of discontinuation from the study, or database cut date, whichever was earlier. Analysis was performed using Kaplan-Meier method.
Part 2: Overall Survival (OS)
OS was defined as the duration (in months) from start of study treatment to death from any cause. Participants last known to be alive were censored at the date of discontinuation from the study, or database cut date, whichever was earlier. Analysis was performed using Kaplan-Meier method.
Part 2: Change From Baseline in Health-related Quality of Life (HRQL) Score Based on Functional Assessment of Cancer Therapy - Multiple Myeloma (FACT-MM) Questionnaire
FACT-MM combines the general version of the FACT (FACT-G) with a MM-specific sub-scale (14 items). The sub-scales for the FACT-G are Physical Well-Being (7 items), Social/Family Well-Being (7 items), Emotional Well-Being (6 items), and Functional Well-Being (7 items). The trial outcomes index (TOI); total of 41 items) is the primary measurement of interest, comprised of the Physical and Functional sub-scales plus the MM-specific sub-scale. Each item is rated on a 5-point Likert scale, ranging from 0 ("Not at all") to 4 ("Very much"), therefore the TOI has a score ranging from 0 to 120. Higher scores indicated improvement in well being.
Number of Participants With Treatment-Emergent Adverse Events (TEAE) of Grade 3/4, Graded Based on National Cancer Institute Common Terminology Criteria (NCI-CTCAE), Version 4.03
An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. As per NCI-CTCAE version 4.03, Grade 1: asymptomatic or mild symptoms, clinical or diagnostic observations only, intervention not indicated; Grade 2: moderate, minimal, local or noninvasive intervention indicated, limiting age-appropriate instrumental activities of daily life (ADL); Grade 3: severe or medically significant but not immediately life-threatening, hospitalization or prolongation of existing hospitalization indicated, disabling, limiting self-care ADL; Grade 4: life-threatening consequence, urgent intervention indicated; Grade 5: death related to AE. Treatment-emergent events are events between first dose of study drug and up to last dose of study treatment + 30 days (inclusive) that were absent before treatment or that worsened relative to pre-treatment state.
Number of Participants With Treatment-Emergent Treatment-Related Adverse Events (TEAEs) of Grade 3/4, Graded Based on National Cancer Institute Common Terminology Criteria (NCI-CTCAE), Version 4.03
An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. As per NCI-CTCAE version 4.03, Grade 1: asymptomatic or mild symptoms, clinical or diagnostic observations only, intervention not indicated; Grade 2: moderate, minimal, local or noninvasive intervention indicated, limiting age-appropriate instrumental activities of daily life (ADL); Grade 3: severe or medically significant but not immediately life-threatening, hospitalization or prolongation of existing hospitalization indicated, disabling, limiting self-care ADL; Grade 4: life-threatening consequence, urgent intervention indicated; Grade 5: death related to AE. A treatment related AE was any untoward medical occurrence in a clinical investigation participant administered a product or medical device; the event had a causal relationship with the treatment or usage.
Apparent Clearance (CL/F) of Selinexor in Plasma
CL/F of selinexor in plasma was reported.
Volume of Distribution (V/F) of Selinexor in Plasma
Vz/F of selinexor in plasma was reported.