To describe the safety and tolerability of evolocumab in participants with homozygous familial hypercholesterolemia (HoFH) in India. All participants will receive evolocumab over an 8-week period.

An open-label, multicentre, phase 4 study to describe the safety and tolerability of evolocumab in 30 Indian participants with HoFH. Subjects who meet the inclusion/exclusion criteria and laboratory assessments at screening will be enrolled and will be required to maintain their current lipid-lowering drug therapy throughout the duration of the trial. Participants will receive evolocumab 420 mg subcutaneous (SC) once monthly (QM) and study visits will occur approximately every 4 weeks. Apheresis participants will receive evolocumab 420 mg SC every 2 weeks to correspond with their apheresis schedule. Final administration of evolocumab (for all participants) will occur at week 8. The end of study (EOS) visit will occur at week 12 for all participants.

Inclusion Criteria:

• Male or female ≥ 12 to ≤ 80 years of age at the time of signing the informed consent
• Diagnosis of HoFH based on low-density lipoprotein cholesterol (LDL-C), familial history and xanthoma
• On a low-fat diet and receiving background lipid-lowering therapy stable for 4 weeks prior to screening and during the time frame of the trial
• Fasting LDL-C at screening > 130 mg/dL (3.4 mmol/L)
• Fasting triglycerides at screening ≤ 400 mg/dL (4.5 mmol/L)

Exclusion Criteria:

• Use of mipomersen or lomitapide within 6 months of screening.
• Known active infection or major hematologic, renal, metabolic, gastrointestinal, hepatic, or endocrine dysfunction
• Currently receiving treatment in another investigational device or drug study, or less than 30 days since ending treatment on another investigational device or drug study(ies)
• Female subject is pregnant or breastfeeding or planning to become pregnant or breastfeed
• Female subjects of childbearing potential unwilling to use an acceptable method of effective contraception
• Subject has known sensitivity to any of the products to be administered during dosing
• History or evidence of any other clinically significant disorder, condition or disease
• Subject has previously received evolocumab or any other proprotein convertase subtilisin/kexin type 9 (PKSK-9)-inhibiting therapy

De-identified individual patient data for variables necessary to address the specific research question in an approved data sharing request

Data sharing requests relating to this study will be considered beginning 18 months after the study has ended and either 1) the product and indication (or other new use) have been granted marketing authorization in both the US and Europe or 2) clinical development for the product and/or indication discontinues and the data will not be submitted to regulatory authorities. There is no end date for eligibility to submit a data sharing request for this study.

Qualified researchers may submit a request containing the research objectives, the Amgen product(s) and Amgen study/studies in scope, endpoints/outcomes of interest, statistical analysis plan, data requirements, publication plan, and qualifications of the researcher(s). In general, Amgen does not grant external requests for individual patient data for the purpose of re-evaluating safety and efficacy issues already addressed in the product labelling. Requests are reviewed by a committee of internal advisors, and if not approved, may be further arbitrated by a Data Sharing Independent Review Panel. Upon approval, information necessary to address the research question will be provided under the terms of a data sharing agreement. This may include anonymized individual patient data and/or available supporting documents, containing fragments of analysis code where provided in analysis specifications. Further details are available at the link below.