A Study of JNJ-68284528 Out-of-Specification (OOS) for Commercial Release in Participants With Multiple Myeloma

ORR is defined as the percentage of participants who had partial response (PR) or better (sCR+CR+VGPR+PR) according to the International Myeloma Working Group (IMWG) response criteria, as assessed by the investigator. CR: Negative immunofixation on the serum and urine and disappearance of any soft tissue plasmacytomas and less than (<) 5 percentage (%) plasma cells (PCs) in bone marrow; sCR: CR+Normal free light chain ratio and absence of clonal cells in bone marrow by immunohistochemistry or immuno fluorescence; PR: greater than equal to (>=) 50% reduction of serum M-protein and reduction in 24-hour urinary M-protein by >= 90 percentage (%) or to <200 mg/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 hour.

Number of participants with TEAEs were reported. An AE was any untoward medical occurrence in a participant participating in a clinical study that did not necessarily had a causal relationship with the pharmaceutical/biological agent under study. TEAEs are defined as any AE that occurred on or after the start of cilta-cel OOS infusion through 100 days after the cilta-cel OOS infusion or the start of subsequent anti-myeloma therapy, whichever was earlier; or any AE that was considered related to study intervention regardless of the start date of the event; or any AE that was present at baseline (Day 1, infusion of cilta-cel OOS) but worsens in toxicity grade or is subsequently considered related to study intervention by the investigator.

An AE was any untoward medical occurrence in a participant participating in a clinical study that did not necessarily had a causal relationship with the pharmaceutical/biological agent under study. TEAEs were defined as any AE that occurs on or after the start of cilta-cel OOS infusion through 100 days after the cilta-cel OOS infusion or the start of subsequent anti-myeloma therapy, whichever was earlier; or any AE that is considered related to study intervention regardless of the start date of the event; or any AE that was present at baseline (Day 1, pre-infusion of cilta-cel OOS) but worsens in toxicity grade or was subsequently considered related to study intervention by the investigator. Severity was assessed using National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0 as: Grade 1: Mild; Grade 2: Moderate; Grade 3: Severe; Grade 4: Life-threatening; Grade 5: Death related to adverse event.

Number of participants with serious TESAEs were reported. A SAE was defined as any untoward medical occurrence that results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, leads to a congenital anomaly/birth defect in the offspring of a participant, or was an important medical event. TESAEs were defined as any SAE that occurs on or after the start of cilta-cel OOS infusion through 100 days after the cilta-cel OOS infusion or the start of subsequent anti-myeloma therapy, whichever was earlier; or any SAE that was considered related to study intervention regardless of the start date of the event; or any SAE that was present at baseline but worsens in toxicity grade or was subsequently considered related to study intervention by the investigator.

Number of participants with treatment-emergent AESIs: CRS, ICANS, other neurotoxicities, and secondary primary malignancies were reported. AESIs include the anticipated risks of treatment with study drug and events that may be related to multiple sclerosis comorbidities. Treatment-emergent AESIs were defined as any AESI that occurs on or after the start of cilta-cel OOS infusion through 100 days after the cilta-cel OOS infusion or the start of subsequent anti-myeloma therapy, whichever was earlier; or any AESI that was considered related to study intervention regardless of the start date of the event; or any AESI that was present at baseline but worsens in toxicity grade or was subsequently considered related to study intervention by the investigator.

Number of participants with treatment-emergent AESIs: prolonged and recurrent cytopenias were reported. AESIs include the anticipated risks of treatment with study drug and events that may be related to multiple sclerosis comorbidities. It included Thrombocytopenia, Neutropenia, Lymphopenia, and Anaemia. Treatment-emergent AESIs were defined as any AESI that occurs on or after the start of cilta-cel OOS infusion through 100 days after the cilta-cel OOS infusion or the start of subsequent anti-myeloma therapy, whichever was earlier; or any AESI that was considered related to study intervention regardless of the start date of the event; or any AESI that was present at baseline but worsens in toxicity grade or was subsequently considered related to study intervention by the investigator. Severity was assessed using NCI-CTCAE version 5.0 as: Grade 1: Mild; Grade 2: Moderate; Grade 3: Severe; Grade 4: Life-threatening; Grade 5: Death related to adverse event.

Number of participants by worst grade abnormalities in clinical laboratory tests: hematology (including coagulation) and chemistry, after cilta-cel OOS infusion were reported. Grades were assessed using NCI-CTCAE (version 5.0), as: Grade 1: Mild; Grade 2: Moderate; Grade 3: Severe; Grade 4: Life-threatening. Participants with normal values or a value in the opposite direction (for laboratory tests with bidirectional toxicities defined) were assigned Grade 0. Only those categories in which at least 1 participant had data were reported.

PR rate was defined as percentage of participants who achieved PR according to IMWG response criteria. PR was defined as per IMWG criteria as >= 50% reduction of serum M-protein and reduction in 24 hours urinary M-protein by >= 90% or to < 200 mg/24hours. If the serum and urine M-protein were unmeasurable, a >= 50% decrease in the difference between involved and uninvolved Free light chain (FLC) levels was required in the place of the M-protein criteria. If serum and urine M-protein were not measurable, and serum free light assay was also not measurable, >=50% reduction in bone marrow plasma cells is required in place of M-protein, provided baseline bone marrow plasma cells percentage was >=30%. In addition to the above listed criteria, if present at baseline, a >= 50% reduction in the size of soft tissue plasmacytomas was also required.

VGPR rate is defined as percentage of participants who achieved best response of VGPR according to IMWG response criteria. As per IMWG response criteria, VPGR: serum and urine M-component detectable by immunofixation but not on electrophoresis, or >=90% reduction in serum M-component plus urine M-component <100 mg/24 hours.

CR rate is defined as percentage of participants who achieved best response of CR according to IMWG response criteria. CR is defined as per IMWG criteria as negative immunofixation of serum and urine, and disappearance of any soft tissue plasmacytomas, and <5% PCs in bone marrow. No evidence of initial monoclonal protein isotype(s) on immunofixation of the serum and urine.

Clinical benefit rate was defined as the percentage of participants who achieved a minimal response (MR) or better (including MR, PR, VGPR, CR, and sCR). MR was defined as per IMWG criteria as >=25% but less than or equal to (<=) 49% reduction of serum M-protein and reduction in 24-hour urine M-protein by 50% to 89%. In addition to the above criteria, if present at baseline, >=50% reduction in the size of soft tissue plasmacytomas was also required.

sCR rate is defined as percentage of participants who achieved sCR according to IMWG response criteria. sCR is defined per IMWG criteria as CR plus normal FLC ratio, and absence of clonal PCs by immunohistochemistry or 2- to 4-color flow cytometry. CR is defined as per IMWG as negative immunofixation of serum and urine, and disappearance of any soft tissue plasmacytomas, and <5% PCs in bone marrow. No evidence of initial monoclonal protein isotype(s) on immunofixation of the serum and urine.

DOR calculated in responders (with PR or better response) from date of initial documentation of response (PR or better) to date of first documented evidence of progressive disease (PD) as per IMWG criteria, or death due to any cause, whichever occurs first. PD: increase of 25% from lowest response value: serum and urine M-component (absolute increase must be >=0.5 grams/deciliter [g/dL] and >=200 mg/24 hours, respectively); only in participants without measurable serum and urine M-protein levels, difference between involved and uninvolved FLC levels (absolute increase must be >10 mg/dL); only in participants without measurable serum and/or urine M-protein levels and without measurable disease by FLC levels, bone marrow PC % (absolute increase must be >=10%), appearance of new lesion; definite development of new bone lesions or definite increase in the size of existing bone lesions, >=50% increase in circulating PCs (minimum of 200 cells per uL) if this was the only measure of disease.

PFS defined as the time from the date of the initial infusion of cilta-cel OOS to the date of first documented disease progression as per IMWG criteria, or death due to any cause, whichever occurs first. PD: increase of 25% from lowest response value: serum and urine M-component (absolute increase must be >=0.5 g/dL and >=200 mg/24 hours, respectively); only in participants without measurable serum and/or urine M-protein levels the difference between involved and uninvolved FLC levels (absolute increase must be >10 mg/dL); only in participants without measurable serum and urine M-protein levels and without measurable disease by FLC levels, bone marrow PC percentage (absolute increase must be >=10%), appearance of a new lesion; definite development of new bone lesions or definite increase in the size of existing bone lesions, >=50% increase in circulating PCs (minimum of 200 cells per uL) if this was the only measure of disease.

OS is measured from the date of the initial infusion of cilta-cel OOS to the date of the participant's death. If the participant is alive or the vital status is unknown, then the participant's data was censored at the date the participant was last known to be alive.

MRD-negative rate is defined as the percentage of participants with negative MRD status (at 10^-4, 10^-5 and 10^-6 cutoffs) by bone marrow aspirate.

Number of participants with presence of replication competent lentivirus (with evaluable sample) were reported.