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Completed

NCT Number: NCT06005597

Study of Obicetrapib & Ezetimibe Fixed Dose Combination on Top of Maximum Tolerated Lipid-Modifying Therapies

The study is a placebo-controlled, double-blind, randomized, phase 3 study in participants with heterozygous familial hypercholesterolemia (HeFH) and/or atherosclerotic cardiovascular disease (ASCVD) or multiple ASCVD risk factors to evaluate the efficacy, safety and tolerability of obicetrapib 10mg and ezetimibe 10mg fixed dose combination as an adjunct to diet and maximally tolerated lipid-lowering therapy.

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Key information

About this study

This study will be a placebo-controlled, double-blind, randomized, phase 3 study in participants with heterozygous familial hypercholesterolemia (HeFH) and/or atherosclerotic cardiovascular disease (ASCVD) or multiple ASCVD risk factors to evaluate the efficacy, safety, and tolerability of obicetrapib as an adjunct to diet and maximally tolerated lipid-lowering therapy. The screening period for this study will take up to 14 days. Afterwards patients will be randomized 1:1:1:1 to Obicetrapib 10 mg and ezetimibe 10 mg fixed dose combination, obicetrapib 10 mg, ezetimibe 10 mg or placebo for a 84 day treatment period. After the treatment period, patients will have an end of study follow-up visit.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Have underlying HeFH and/or a history of ASCVD or multiple ASCVD risk factors
  • On maximally tolerated lipid-modifying therapy as an adjunct to a diet and lifestyle modifications
  • LDL-C ≥ 70 mg/dL
  • Triglycerides < 500
  • Estimated glomerular filtration rate ≥ 15 mL/min/1.73 m2

Exclusion criteria

  • History of New York Heart Association (NYHA) class III or IV heart failure of left ventricular ejection fraction <30%
  • Hospitalized for heart failure within the last 5 years
  • Myocardial infarction, stroke, non-elective coronary revascularization or hospitalization for unstable angina or chest pain in the last 3 months
  • Uncontrolled severe hypertension
  • Diagnosis of homozygous FH
  • Liver disease
  • HbA1c ≥ 10.0% or fasting glucose ≥ 270 mg/dL
  • Thyroid-stimulating hormone >1.5 x upper limit of normal (ULN)
  • History of malignancy
  • Creatinine kinase (CK) >3 X ULN
  • Alcohol abuse
  • Treatment with investigational product
  • Treatment with gemfibrozil or ezetimibe
  • Previous participation in a trial evaluating obicetrapib
  • Known allergy to study drugs, placebo or excipients in study drugs of placebo
  • Other condition that would interfere with the conduct of the study

Treatment and study plan

Combination Therapy

Combination Product

tablet; 10mg obicetrapib and 10mg ezetimibe fixed does combination

Other names: Cholesteryl ester transfer protein (CETP) inhibitor, obicetrapib, ezetimibe

Monotherapy obicetrapib

Drug

tablet; 10mg obicetrapib

Other names: CETP inhibitor

Monotherapy ezetimibe

Drug

capsule; 10mg ezetimibe

Combination Therapy placebo

Other

tablet; no active ingredient

Obicetrapib Placebo

Other

tablet; no active ingredient

Ezetimibe Placebo

Other

capsule; no active ingredient

Primary outcomes

  1. Effect of Fixed-Dose Combination (FDC) Compared to Placebo on LDL-C

    Time frame: 84 Days

    LS mean percent change in low-density lipoprotein cholesterol (LDL-C) from baseline to Day 84 in the obicetrapib 10 mg/ezetimibe 10 mg fixed-dose combination (FDC) group compared to the placebo group. LDL-C level was measured by preparative ultracentrifugation (PUC).

  2. Effect of Fixed Dose Combination (FDC) Compared to Ezetimibe Monotherapy on LDL-C

    Time frame: 84 Days

    LS mean percent change in low-density lipoprotein cholesterol (LDL-C) from baseline to Day 84 in the obicetrapib 10 mg/ezetimibe 10 mg fixed-dose combination (FDC) group compared to the ezetimibe monotherapy 10 mg group. LDL-C level was measured by preparative ultracentrifugation (PUC).

  3. Effect of Fixed Dose Combination (FDC) Compared to Obicetrapib Monotherapy on LDL-C

    Time frame: 84 Days

    LS mean percent change in low-density lipoprotein cholesterol (LDL-C) from baseline to Day 84 in the obicetrapib 10 mg/ezetimibe 10 mg fixed-dose combination (FDC) group compared to the obicetrapib monotherapy 10 mg group. LDL-C level was measured by preparative ultracentrifugation (PUC).

  4. Effect of Obicetrapib Monotherapy Compared to Placebo on LDL-C

    Time frame: 84 Days

    LS mean percent change in low-density lipoprotein cholesterol (LDL-C) from baseline to Day 84 in the obicetrapib 10 mg group compared to the placebo group. LDL-C level was measured by preparative ultracentrifugation (PUC).

Secondary outcomes

  1. Effect of Fixed Dose Combination (FDC) Compared to Placebo on Non-HDL-C

    Time frame: 84 Days

    LS mean percent change in non-high-density lipoprotein cholesterol (Non-HDL-C) from baseline to Day 84 in the obicetrapib 10 mg/ezetimibe 10 mg fixed-dose combination (FDC) group compared to the placebo group.

  2. Effect of Fixed Dose Combination (FDC) Compared to Placebo on Apolipoprotein B (ApoB)

    Time frame: 84 Days

    LS mean percent change in apolipoprotein B (ApoB) from baseline to Day 84 in the obicetrapib 10 mg/ezetimibe 10 mg fixed-dose combination (FDC) group compared to the placebo group.

  3. Effect of Obicetrapib Monotherapy Compared to Placebo on Non-HDL-C

    Time frame: 84 Days

    LS mean percent change in non-high-density lipoprotein cholesterol (Non-HDL-C) from baseline to Day 84 in the obicetrapib monotherapy 10 mg group compared to the placebo group.

  4. Effect of Obicetrapib Monotherapy Compared to Placebo on Apolipoprotein B (ApoB)

    Time frame: 84 Days

    LS mean percent change in apolipoprotein B (ApoB) from baseline to Day 84 in the obicetrapib monotherapy 10 mg group compared to the placebo group.

  5. Effect of Fixed-Dose Combination (FDC) Compared to Ezetimibe Monotherapy on Non-HDL-C

    Time frame: 84 Days

    LS mean percent change in non-high-density lipoprotein cholesterol (Non-HDL-C) from baseline to Day 84 in the obicetrapib 10 mg/ezetimibe 10 mg fixed-dose combination (FDC) group compared to the ezetimibe monotherapy 10 mg group.

  6. Effect of Fixed-Dose Combination (FDC) Compared to Ezetimibe Monotherapy on Apolipoprotein B (ApoB)

    Time frame: 84 Days

    LS mean percent change in apolipoprotein B (ApoB) from baseline to Day 84 in the obicetrapib 10 mg/ezetimibe 10 mg fixed-dose combination (FDC) group compared to the ezetimibe monotherapy 10 mg group.

  7. Effect of Fixed-Dose Combination (FDC) Compared to Obicetrapib Monotherapy on Non-HDL-C

    Time frame: 84 Days

    LS mean percent change in non-high-density lipoprotein cholesterol (Non-HDL-C) from baseline to Day 84 in the obicetrapib 10 mg/ezetimibe 10 mg fixed-dose combination (FDC) group compared to the obicetrapib monotherapy 10mg group.

  8. Effect of Fixed-Dose Combination (FDC) Compared to Obicetrapib Monotherapy on Apolipoprotein B (ApoB)

    Time frame: 84 Days

    LS mean percent change in Apolipoprotein B (ApoB) from baseline to Day 84 in the obicetrapib 10 mg/ezetimibe 10 mg fixed-dose combination (FDC) group compared to the obicetrapib monotherapy 10 mg group.

Sponsors and collaborators

Lead sponsor

NewAmsterdam Pharma

Industry

Registry information

Official study title

A Placebo-Controlled, Double-Blind, Randomized, Phase 3 Study to Evaluate the Effect of Obicetrapib 10 mg and Ezetimibe 10 mg Fixed Dose Combination Daily on Top of Maximally Tolerated Lipid-Modifying Therapy in Participants With Heterozygous Familial Hypercholesterolemia (HeFH) and/or Atherosclerotic Cardiovascular Disease (ASCVD) or Multiple ASCVD Risk Factors

Acronym: TANDEM

Important dates

Study start
2024
Primary completion
2024
Study completion
2024
First posted
Aug 22, 2023
Registry last updated
Oct 8, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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