Trial Outcomes & Findings for Study of Safety, Efficacy and Tolerability of Secukinumab Versus Placebo, in Combination With SoC Therapy, in Patients With Active Lupus Nephritis (NCT NCT04181762)

This study was conducted in 106 centers in 34 countries worldwide.

At Baseline, all eligible subjects were randomized in a 1:1 ratio to secukinumab 300 mg s.c. or placebo via Interactive Response Technology (IRT).

Study of Safety, Efficacy and Tolerability of Secukinumab Versus Placebo, in Combination With SoC Therapy, in Patients With Active Lupus Nephritis

Complete Renal Response (CRR) is a composite endpoint defined as: * Estimated Glomerular Filtration Rate (eGFR) \>= 60 mL/min/1.73 m\^2 or no less than 85% of core Baseline values and * 24-hour Urine-to-Protein Creatinine Ratio (UPCR) =\< 0.5mg/mg * No treatment discontinuation before Week 52 * The subject did not receive more than 10 mg/day prednisone or equivalent for \>= 3 consecutive days or for \>= 7 days in total during Week 44 through Week 52. Non-responder imputation (NRI) was used for participants who did not have the required data to compute responses at Week 52 or who had discontinued study treatment before Week 52. A logistic regression model was used for the analysis of this endpoint.

Urine Protein-to-Creatinine Ratio (UPCR) was determined by a central laboratory by dividing the protein concentration by the creatinine concentration as measured in the urine collected (24-hour urine collection sample).

Partial Renal Response (PRR) is a composite endpoint defined as: * \>= 50% reduction in 24-hour Urine-to-Protein Creatinine Ratio (UPCR) to sub-nephrotic levels (=\< 3 mg/mg) and * Estimated Glomerular Filtration Rate (eGFR) \>= 60 mL/min/1.73 m\^2 or no less than 85% of Baseline

Average daily dose of oral corticosteroids doses was used to assess efficacy of secukinumab compared to placebo in the averaged daily dose of oral corticosteroids administered between Week 16 and Week 52.

Partial Renal Response (PRR) is a composite endpoint defined as: * \>= 50% reduction in 24-hour Urine-to-Protein Creatinine Ratio (UPCR) to sub-nephrotic levels (=\< 3 mg/mg) and * Estimated Glomerular Filtration Rate (eGFR) \>= 60 mL/min/1.73 m\^2 or no less than 85% of Baseline

Time to achieve Complete Renal Response (CRR) up to week 52 was evaluated by 4-week interval by using Kaplan-Meier estimates. Participants who did not achieve CRR were censored at the date of their last non-missing CRR result (including participants who completed week 52 without achieving CRR). * Subjects at risk = Subjects who did not achieve CRR and were not censored before or at the start of the specified interval. Participants had an event when achieving CRR. * Incidence rate (%) = (number of subjects with event/number of subjects at risk) x 100.

Time to achieve Partial Renal Response (PRR) up to week 52 was evaluated by 4-week interval by using Kaplan-Meier estimates. Participants who did not achieve PRR were censored at the date of their last non-missing PRR result (including participants who completed week 52 without achieving PRR). Participants had event when achieving PRR. * Subjects at risk = Subjects who did not achieve PRR and were not censored before or at the start of the specified interval. * Incidence rate (%) = (number of subjects with event/ number of subjects at risk) x 100.

Time to achieve first morning void Urine Protein-to-Creatinine Ratio (UPCR) \<= 0.5 mg/mg up to week 52 was evaluated by 4-week interval by using Kaplan-Meier estimates. Participants who did not achieve UCPR were censored at the date of their last non-missing UCPR result (including participants who completed week 52 without achieving UCPR). Participants had event when achieving UCPR. * Subjects at risk = Subjects who did not achieve UCPR and were not censored before or at the start of the specified interval. * Incidence rate (%) = (number of subjects with event/ number of subjects at risk) x 100.

The FACIT-Fatigue is a 13-item questionnaire that assesses self-reported fatigue and its impact upon daily activities and function over the past week. The purpose of the FACIT-Fatigue in this study was to assess the impact of fatigue on subjects with lupus nephritis (LN). The level of fatigue was measured on a 5-point Likert scale (0 = not at all, 1 = a little bit, 2 = somewhat, 3 = quite a bit, 4 = very much) based on their experience of fatigue during the past 2 weeks. The scale score is computed by summing the item scores, after reversing those items that are worded in the negative direction. FACIT-Fatigue scale score range from 0 to 52, where higher scores represent less fatigue.

The SF-36 questionnaire consists of eight scales yielding two summary measures: physical and mental health. The physical health measure includes four scales of physical functioning (10 items), role-physical (4 items), bodily pain (2 items), and general health (5 items). The mental health measure is composed of vitality (4 items), social functioning (2 items), role-emotional (3 items), and mental health (5 items). In this trial, SF-36-PCS responder (improvement of \>= 2.5 points) were evaluated. Responses to items allow for direct calculation of scale scores, while the physical component summary (PCS) scores are computed from weighted scale scores. For all scales and summary measures, higher scores indicate better health outcomes (PCS scores range 0 to 100).

The LupusQoL is a disease-specific, 34-item, self-report questionnaire designed to measure the health-related quality of life (HRQoL) of subjects with SLE within 8 domains (i.e., physical health (8 items), emotional health (6 items), body image (5 items), pain (3 items), planning (3 items), fatigue (4 items), intimate relationships (2 items), and burden to others (3 items)). Responses are based on a 5-point Likert scale where 0 (all of the time) to 4 (never). Each domain of the LupusQoL was scored separately. Transformed scores range from 0 (worst HRQoL) to 100 (best HRQoL).

The distribution of adverse events was done via the analysis of frequencies for treatment emergent Adverse Event (TEAEs), Serious Adverse Event (TESAEs) and Deaths due to AEs, through the monitoring of relevant clinical and laboratory safety parameters.

The percentage of participants with maintained renal response (CRR) at Week 104 in the secukinumab group was evaluated

The percentage of participants with improved or maintained renal response (CRR) at Week 104 in the secukinumab group was evaluated