Efficacy and safety of inclisiran in real-world clinical practice. Results from the CHOLINET Registry

Abstract Background/Introduction Inclisiran has been recently introduced in clinical practice. Thus, efficacy and safety data from real-world settings are limited. Purpose Cholinet (Cholesterol inclisiran Italian network) is an Italian multicenter prospective phase 4 registry including 36 Italian centers, designed to assess efficacy, safety, adherence and persistence of inclisiran treatment, and clinician’s behavior on LLT in very high CV risk patients with atherosclerotic CV disease and/or familial hypercholesterolemia (FH). Methods From November 2022 through February 2024, the Cholinet registry enrolled patients receiving inclisiran according to standard clinical practice. Clinical and demographic characteristics, concomitant therapies, blood chemistry, were recorded at the time of first prescription and at subsequent follow-up. Results We enrolled 668 patients in treatment with inclisiran (15.1% with FH, 30.7% female, mean age 63 years), Data on follow-up at 3 months (booster time) were available for 495 of them. At the time of inclisiran first prescription median LDL-C was 102 mg/dl and reached 51 mg/dl at the time of 3 months observation (50% mean reduction, 51 mg/dl absolute median reduction). None of the 495 patients reaching 3 months follow up missed the reinjection dose administration. Of 668 patients enrolled, 553 patients (82.7%) were on LLT, of them 107 (19.3%) were on ezetimibe alone, 67 (12.1%) on statin alone and 379 (68.5%) on a statin and ezetimibe combination. Of the enrolled patients, 45 (6.7%) were previously treated with evolocumab and 34 (5%) with alirocumab. Among the patients evaluated at the 3-month follow-up, 307 patients (62%) achieved the LDL cholesterol target; of them, 450 (91%) were treated with inclisiran and statin±ezetimibe. Evaluating the distribution of the percentage reduction in LDL cholesterol values, a heterogeneity emerged that was partly explainable by the concomitant lipid-lowering therapy and partly by the previous exposure to PCSK9 inhibitors. Conclusions These preliminary data from the Cholinet Italian registry show that inclisiran effectively reduces (50%) LDL-C in real-world settings. The LDL-C target was achieved in 62% of patients; of them 91% were on lipid-lowering therapy, showing that combination therapy is necessary in most of these patients.