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TerminatedNCT01583647Updated Nov 3, 2015Results posted

A Study of Extended-release (ER) Niacin/Laropiprant in Adolescents With Heterozygous Familial Hypercholesterolemia (MK-0524A-158)

A Phase 1 interventional study of MK-0524A and MK-0524A in Hypercholesterolemia, Familial and Heterozygous Familial Hypercholesterolemia, sponsored by Merck Sharp & Dohme LLC. Terminated. Open to participants aged 10 Years to 16 Years. Per ClinicalTrials.gov, last updated 2015-11-03.

Sponsored by Merck Sharp & Dohme LLC · Phase 1, Interventional, and Treatment

Why this study was terminated
In HPS2-THRIVE, MK-0524A did not meet the primary efficacy objective and there was a significant increase in incidence of some types of non-fatal SAEs.
Phase
Phase 1
Study type
Interventional
Enrollment
10
Allocation
Randomized
Ages
10 Years to 16 Years
Sex
All
01

Study summary

The purpose of this study is to determine the pharmacokinetics of laropiprant following administration of a single dose of 1 (Panel A) and 2 (Panel B) combination tablets of MK-0524A in adolescents with heterozygous familial hypercholesterolemia.

02

Conditions studied

  • Hypercholesterolemia, Familial
  • Heterozygous Familial Hypercholesterolemia
03

In context

Hyperlipoproteinemia Type II

245 studies on the registry are indexed under Hyperlipoproteinemia Type II; 52 are open to participants now.

This study's enrollment of 10 is below the median of 86 across 170 interventional studies indexed under Hyperlipoproteinemia Type II.

Browse Hyperlipoproteinemia Type II studies →

Lead sponsor

Merck Sharp & Dohme LLC is the lead sponsor of 2,114 studies on the registry; 133 are open to participants now.

Of its 489 completed or terminated interventional studies of FDA-regulated products, 362 (74%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
10 Years to 16 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Post-pubescent adolescent age 10 to 16 with heterozygous familial hypercholesterolemia
  • Agree to use (and/or have their partner use) acceptable methods of birth control beginning at the prestudy visit until at least 2 weeks after dosing of study drug
  • Height and weight fall between the 10th and 95th percentile for age with a minimum body weight of 23 kg
  • Receiving appropriate medical care for hypercholesterolemia, such as a statin or other lipid-modifying therapy.

Exclusion criteria

Exclusion Criteria:

  • History of psychiatric or personality disorders that may affect the patient's ability to participate
  • History of stroke, chronic seizures, or major neurological disorder
  • History of clinically significant endocrine, gastrointestinal, cardiovascular, hematological, hepatic, immunological, renal, respiratory, or genitourinary abnormalities or diseases (excluding lipid abnormalities)
  • Poorly controlled or recently diagnosed Type 1 or Type 2 diabetes mellitus
  • History of neoplastic disease within previous 5 years
  • Consumes alcohol or excessive amounts of products that contain caffeine (e.g. cola)
  • Has had major surgery, donated and/or received blood within previous 8 weeks
  • Participated in another investigational study within previous 4 weeks
  • History of significant multiple and/or severe allergies (including latex allergy), or has had an anaphylactic reaction or significant intolerability to prescription or non-prescription drugs or food
  • Positive for hepatitis B surface antigen, hepatitis C antibodies or human immunodeficiency virus (HIV)
  • Cannot swallow large tablets
  • Pregnant or breastfeeding
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
10 participants (actual)

Study arms

  • Experimental
    MK-0524A 1 g/20 mg (Panel A)

    Single oral dose of 1 tablet of MK-0524A. Each tablet contained Extended Release (ER) Niacin 1g and laropiprant 20 mg

    Drug: MK-0524A

  • Experimental
    MK-0524A 2 g/40 mg (Panel B)

    Single oral dose of 2 tablets of MK-0524A. Each tablet contained Extended Release (ER) Niacin 1g and laropiprant 20 mg

    Drug: MK-0524A

Interventions

  • DrugMK-0524A

    1 tablet of MK-0524A (1g ER niacin/20mg laropripant) orally

    Also known as: Extended-release (ER) Niacin/Laropiprant

  • DrugMK-0524A

    2 tablets of MK-0524A (1g ER niacin/20mg laropripant) orally

    Also known as: Extended-release (ER) Niacin/Laropiprant

06

What researchers measure

Primary outcomes

  1. Plasma Area Under the Concentration Curve From 0 to Infinity (AUC0-∞) of Laropiprant

    Time frame: Predose Day 1 up to 24 hours postdose

  2. Plasma Maximum Concentration (Cmax) of Laropiprant

    Time frame: Predose on Day 1 up to 48 hours postdose

  3. Total Urinary Excretion of Niacin and Niacin Metabolites

    Time frame: Predose on Day 1 up to 72 hours postdose

  4. Plasma Cmax of Nicotinuric Acid (NUA)

    Time frame: Predose on Day 1 up to 48 hours postdose

07

Results

Posted Dec 4, 2013

Participant flow

Participant flow — Overall Study
MilestoneMK-0524A 1 g/20 mg (Panel A)MK-0524A 2 g/40 mg (Panel B)
Started100
Completed100
Not completed00

Outcome measures

PrimaryPlasma Area Under the Concentration Curve From 0 to Infinity (AUC0-∞) of Laropiprant
Time frame:
Predose Day 1 up to 24 hours postdose

No measurements were reported for this outcome.

PrimaryPlasma Maximum Concentration (Cmax) of Laropiprant
Time frame:
Predose on Day 1 up to 48 hours postdose

No measurements were reported for this outcome.

PrimaryTotal Urinary Excretion of Niacin and Niacin Metabolites
Time frame:
Predose on Day 1 up to 72 hours postdose

No measurements were reported for this outcome.

PrimaryPlasma Cmax of Nicotinuric Acid (NUA)
Time frame:
Predose on Day 1 up to 48 hours postdose

No measurements were reported for this outcome.

Adverse events

Collected over up to 14 days for each panel. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
MK-0524A 1 g/20 mg (Panel A)—0/10 (0%)7/10 (70%)
MK-0524A 2 g/40 mg (Panel B)———
Most frequent other events
Most frequent other events
EventMK-0524A 1 g/20 mg (Panel A)MK-0524A 2 g/40 mg (Panel B)
HeadacheNervous system disorders2/10—
Abdominal pain lowerGastrointestinal disorders1/10—
Bruising of armInjury, poisoning and procedural complications1/10—
SprainInjury, poisoning and procedural complications1/10—
Low back painMusculoskeletal and connective tissue disorders1/10—
DiuresisRenal and urinary disorders1/10—
PruritusSkin and subcutaneous tissue disorders1/10—
Facial flushingVascular disorders1/10—
FlushingVascular disorders1/10—

Baseline characteristics

Age, Continuous
Age, Continuous(Years)MK-0524A 1 g/20 mg (Panel A)
Mean15.4 ± 0.8
Sex: Female, Male
Sex: Female, Male(Participants)MK-0524A 1 g/20 mg (Panel A)
Female5
Male5
08

Study locations

No study locations are listed for this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 3, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01583647
Lead sponsor
Merck Sharp & Dohme LLC
Responsible party
Sponsor
First posted
Apr 24, 2012
Start date
Jun 2012
Primary completion
Dec 2012
Completion
Dec 2012
Results posted
Dec 4, 2013
Last update
Nov 3, 2015

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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