Lipid goal attainment across baseline socioeconomic and clinical factors comparing an "inclisiran first" implementation strategy and usual care: subgroup analysis of VICTORION-INITIATE

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Abstract Background Addressing inequities in cardiovascular care has become a public health priority. Recent results from VICTORION-INITIATE, a pragmatically designed, randomised clinical trial showed the benefit of using inclisiran immediately if patients with atherosclerotic cardiovascular disease (ASCVD) fail to achieve low-density lipoprotein cholesterol (LDL-C) <70 mg/dL (1.8 mmol/L) on maximally tolerated statins. Purpose To evaluate effectiveness and safety of an "inclisiran first" implementation strategy (IF) versus usual care (UC) in subgroups that may be associated with healthcare inequities. Methods VICTORION-INITIATE was conducted at 45 representative clinical settings across 20 states in the USA. Patients with ASCVD randomised 1:1 (stratified by insurance status) received open-label inclisiran 284 mg at Days 0, 90 and 270) plus UC or UC alone (lipid management directed by treating physicians). Treating physicians had access to LDL-C measurements and were encouraged to intensify treatment per lipid guidelines. We compared efficacy and safety endpoints for IF and UC in prespecified subgroups (race, ethnicity, sex, renal function and statin intensity) and by income level (post-hoc analysis). Results The study randomised 450 patients. Baseline demographic and clinical parameters were balanced between study arms (≥65 years of age: IF: 63.1%, UC: 61.3%; non-White: IF: 15.6%, UC: 15.1%; Hispanic: IF: 13.8%, UC: 16.9%; female: IF: 29.8%, UC: 32.0%; income ≤$50,000: IF: 58.7%, UC: 58.2%; estimated glomerular filtration rate ≥30 to <60 mL/min/1.73m2: IF: 20.0%, UC: 17.8%; no statins at baseline: IF: 9.8%; UC: 10.2%). Across all subgroups, more patients achieved LDL-C goals at Day 330 with IF vs UC (Figure 1). Within the UC arm, the proportions of patients achieving LDL-C <70 mg/dL and <55 mg/dL, respectively, were numerically lower for non-White (8.8% and 2.9%) and Hispanic (10.5% and 2.6%) than White (24.6% and 10.2%) and non-Hispanic (24.9% and 10.3%) patients. We did not observe differences in LDL-C goal attainment for these subgroups in patients receiving IF. Compared with UC, IF resulted in greater mean percentage change in other lipids and lipoproteins from baseline to Day 330, irrespective of subgroup (Figure 2). Incidence of treatment-emergent adverse events (TEAEs) and serious TEAEs compared similarly between IF and UC for each subgroup (IF: 35.5−69.2%, UC: 34.2−84.2%, and IF: 3.2−16.9%, UC: 0.0−36.8%, respectively). Conclusions VICTORION-INITIATE enrolled a diverse population reflective of "real-world" US clinical practice. The IF strategy consistently resulted in higher rates of LDL-C goal attainment for all subgroups studied and did not lead to differences in lipid outcomes by race or ethnicity as compared to usual care. No additional safety concerns for the IF strategy were identified.