AzTrials
AzTrials

Familial Hypercholesterolemia - HomozygousPhase 3ORION-13NCT04659863

Study to Evaluate Efficacy and Safety of Inclisiran in Adolescents With Homozygous Familial Hypercholesterolemia

A Phase 3 study testing Inclisiran in people with Familial Hypercholesterolemia - Homozygous, run by Novartis Pharmaceuticals at 11 sites in 8 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

This was a pivotal phase III study designed to evaluate safety, tolerability, and efficacy of inclisiran in adolescents with homozygous familial hypercholesterolemia (HoFH) and elevated low density lipoprotein cholesterol (LDL-C). Read more about this study

Who is it for?
Ages 12 to 17 years
What is being tested?
Inclisiran
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
13 participants
Where
11 sitesin 8 countries
Study dates
16 Feb 2021to 18 Nov 2024
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 12 to 17 years
  • All sexes
  • No healthy volunteers
  • Child

Who may be able to join

  • Homozygous Familial Hypercholesterolemia (HoFH) diagnosed by genetic confirmation
  • Fasting LDL-C >130 mg/dL (3.4 mmol/L) at screening
  • On maximally tolerated dose of statin (investigator's discretion) with or without other lipid-lowering therapy; stable for ≥ 30 days before screening
  • Male or female participants >=12 to <18 years of age at screening

Who cannot join

  • Documented evidence of a null (negative) mutation in both LDLR alleles
  • Heterozygous familial hypercholesterolemia (HeFH)
  • Active liver disease
  • Secondary hypercholesterolemia, e.g. hypothyroidism or nephrotic syndrome
  • Previous treatment with monoclonal antibodies directed towards PCSK9 (within 90 days of screening)
  • Treatment with mipomersen or lomitapide (within 5 months of screening)
  • Recent and/or planned use of other investigational medicinal products or devices

Trial locations and contacts

11 sites in 8 countries.

11 sites in 8 countries

Greece2 sites
  • Metropolitan Hospital

    Athens, 18547

  • University General Hospital of Ioannina

    Ioannina, GR, 455 00

Other trials in Greece

Lebanon2 sites
  • American University of Beirut Medical Center

    Beirut, 1107 2020

  • Hotel Dieu de France Hospital

    El Achrafiyé, 166830

Other trials in Lebanon

Turkey (Türkiye)2 sites
  • Novartis Investigative Site

    Istanbul, TUR, 34098

  • Novartis Investigative Site

    Izmir, 35100

Other trials in Turkey (Türkiye)

United States1 site
  • Excel Medical Clinical Trials LLC

    Boca Raton, Florida, 33434

Other trials in United States

Canada1 site
  • Novartis Investigative Site

    Québec, Quebec, G1V 4W2

Other trials in Canada

France1 site
  • Novartis Investigative Site

    Bron, 69677

Other trials in France

Malaysia1 site
  • Novartis Investigative Site

    Kuala Lumpur, 59100

Other trials in Malaysia

Netherlands1 site
  • Novartis Investigative Site

    Amsterdam, 1105 AZ

Other trials in Netherlands

About this study

Official title: Two Part (Double-blind Inclisiran Versus Placebo [Year 1] Followed by Open-label Inclisiran [Year 2]) Randomized Multicenter Study to Evaluate Safety, Tolerability, and Efficacy of Inclisiran in Adolescents (12 to Less Than 18 Years) With Homozygous Familial Hypercholesterolemia and Elevated LDL-cholesterol (ORION-13)

This was a pivotal phase III study designed to evaluate safety, tolerability, and efficacy of inclisiran in adolescents with homozygous familial hypercholesterolemia (HoFH) and elevated low density lipoprotein cholesterol (LDL-C).

Read the detailed description

This was a two-part (double-blind, inclisiran versus placebo [Year 1] followed by open-label inclisiran [Year 2]) multicenter study in adolescents (aged 12 to < 18 years) with HoFH and elevated LDL-C (> 130 mg/dL; 3.4 mmol/L) on stable, individualized, optimal standard of care (SoC) background lipid-lowering therapy (including maximally tolerated statin treatment, at the Investigator's discretion) to evaluate the safety, tolerability, and efficacy of inclisiran in this pediatric patient population.

Following an approximately 4-week screening/run-in period, the study had 2 sequential parts as follows:

Part 1/Year 1: 12 months double-blind, parallel group period, in which participants were randomized in a 2:1 ratio to receive either inclisiran sodium 300 mg subcutaneous (s.c.) or placebo. The primary endpoint was assessed at Day 330.

Part 2/Year 2: 12 months single arm, open-label follow-up period, with all participants receiving inclisiran sodium 300 mg s.c.

Being tested
Inclisiran, Placebo
Keywords
Homozygous familial hypercholesterolemia (HoFH), LDL-cholesterol (LDL-C), adolescents, pediatric, small interfering ribonucleic acid (siRNA)
Medical subject headings
Homozygous Familial Hypercholesterolemia

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • InclisiranDrug

    Also called KJX839

    Inclisiran sodium 300 mg (equivalent to 284 mg inclisiran) in 1.5 mL solution for subcutaneous injection

  • PlaceboDrug

    Also called Saline solution

    Sterile normal saline (0.9% sodium chloride in water for injection) for subcutaneous injection

Study groups in NCT04659863
Study groupRoleWhat they receive
Part 1 - InclisiranExperimentalInclisiran sodium 300 mg subcutaneous (sc) injection (given at Days 1, 90 and 270)
Receives: Drug: Inclisiran
Part 1 - PlaceboPlacebo comparatorPlacebo sc injection (given at Day 1, 90 and 270)
Receives: Drug: Placebo
Part 2 - Inclisiran (Total)ExperimentalInclisiran sodium 300 mg sc injection (given at Days 450 and 630). In addition, participants assigned to placebo in Part 1 received inclisiran sodium 300 mg sc injection on Day 360, while participants assigned to inclisiran in Part 1 received placebo sc injection on Day 360.
Receives: Drug: Inclisiran

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percentage Change in LDL-C From Baseline to Day 330 (Part 1/Year 1)

    Percentage change in low-density lipoprotein cholesterol (LDL-C) from baseline to Day 330 (Year 1)

    Measured: Baseline and Day 330

Secondary outcomes (21)
  1. Time-adjusted Percent Change in LDL-C From Baseline After Day 90 and up to Day 330 (Part 1/Year 1)

    Time-adjusted percent change in LDL-C (after Day 90 and up to Day 330), calculated as the average of percent changes from baseline to Days 150, 270 and 330

    Measured: Baseline, after Day 90 up to Day 330

  2. Percent Change in LDL-C From Baseline up to Day 720

    Percentage change in LDL-C from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  3. Absolute Change in LDL-C From Baseline up to Day 720

    Absolute change in LDL-C from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  4. Percent Change in Apo B From Baseline up to Day 720

    Percentage change in apolipoprotein B (Apo B) from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  5. Absolute Change in Apo B From Baseline up to Day 720

    Absolute change in apolipoprotein B (Apo B) from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  6. Percent Change in Lp(a) From Baseline up to Day 720

    Percentage change in lipoprotein (a) [Lp(a)] from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  7. Absolute Change in Lp(a) From Baseline up to Day 720

    Absolute change in lipoprotein (a) [Lp(a)] from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  8. Percent Change in Non-HDL-C From Baseline up to Day 720

    Percentage change in non-high density lipoprotein cholesterol (non-HDL-C) from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  9. Absolute Change in Non-HDL-C From Baseline up to Day 720

    Absolute change in non-high density lipoprotein cholesterol (non-HDL-C) from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  10. Percent Change in Total Cholesterol From Baseline up to Day 720

    Percentage change in total cholesterol from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  11. Absolute Change in Total Cholesterol From Baseline up to Day 720

    Absolute change in total cholesterol from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  12. Percent Change in Triglycerides From Baseline up to Day 720

    Percentage change in triglycerides from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  13. Absolute Change in Triglycerides From Baseline up to Day 720

    Absolute change in triglycerides from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  14. Percent Change in HDL-C From Baseline up to Day 720

    Percentage change in high density lipoprotein cholesterol (HDL-C) from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  15. Absolute Change in HDL-C From Baseline up to Day 720

    Absolute change in high density lipoprotein cholesterol (HDL-C) from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  16. Percent Change in VLDL-C From Baseline up to Day 720

    Percentage change in very low density lipoprotein cholesterol (VLDL-C) from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  17. Absolut Change in VLDL-C From Baseline up to Day 720

    Absolute change in very low density lipoprotein cholesterol (VLDL-C) from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  18. Percent Change in Apo A1 From Baseline up to Day 720

    Percentage change in apolipoprotein A1 (Apo A1) from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  19. Absolute Change in Apo A1 From Baseline up to Day 720

    Absolute change in apolipoprotein A1 (Apo A1) from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  20. Percent Change in PCSK9 From Baseline up to Day 720

    Percentage change in proprotein convertase subtilisin/kexin type 9 (PCSK9) from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

  21. Absolut Change in PCSK9 From Baseline up to Day 720

    Absolute change in proprotein convertase subtilisin/kexin type 9 (PCSK9) from baseline to each assessment time up to Day 720.

    Measured: Baseline, up to Day 720

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Dec 2020
  2. Study start16 Feb 2021
  3. Primary completion30 Oct 2023
  4. Study completion18 Nov 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Parallel (Year 1) to single-group (Year 2)
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
13 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04659863
Sponsor's protocol ID
CKJX839C12302
Other IDs
2020-002755-38
Acronym
ORION-13
Status last verified
Dec 2025
First submitted
2 Dec 2020
Last updated
13 Jan 2026
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: Novartis is committed to sharing with qualified external researchers, access to patient-level data and supporting clinical documents from eligible studies. These requests are reviewed and approved by an independent review panel on the basis of scientific merit. All data provided is anonymized to respect the privacy of patients who have participated in the trial in line with applicable laws and regulations. This trial data availability is according to the criteria and process described on www.clinicalstudydatarequest.com

Publications

  • Wiegman A, Peterson AL, Hegele RA, Bruckert E, Schweizer A, Lesogor A, Wang Y, Defesche J. Efficacy and Safety of Inclisiran in Adolescents With Genetically Confirmed Homozygous Familial Hypercholesterolemia: Results From the Double-Blind, Placebo-Controlled Part of the ORION-13 Randomized Trial. Circulation. 2025 Jun 24;151(25):1758-1766. doi: 10.1161/CIRCULATIONAHA.124.073233. Epub 2025 May 20.

    PubMed 40391436
  • Reijman MD, Schweizer A, Peterson ALH, Bruckert E, Stratz C, Defesche JC, Hegele RA, Wiegman A. Rationale and design of two trials assessing the efficacy, safety, and tolerability of inclisiran in adolescents with homozygous and heterozygous familial hypercholesterolaemia. Eur J Prev Cardiol. 2022 Jul 20;29(9):1361-1368. doi: 10.1093/eurjpc/zwac025.

    PubMed 35175352
  • Warden BA, Duell PB. Inclisiran: A Novel Agent for Lowering Apolipoprotein B-containing Lipoproteins. J Cardiovasc Pharmacol. 2021 Aug 1;78(2):e157-e174. doi: 10.1097/FJC.0000000000001053.

    PubMed 33990512

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Inclisiran in people with Familial Hypercholesterolemia - Homozygous, run by Novartis Pharmaceuticals at 11 sites in 8 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 13 Jan 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 11 sites in Greece, Lebanon, Turkey (Türkiye), United States, Canada and 3 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 31 May 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage Change in LDL-C From Baseline to Day 330 (Part 1/Year 1) (time frame: Baseline and Day 330). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04659863, which also lists 3 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Jan 2026.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in