ClinicalTrials.gg
CompletedNCT00533611Updated Feb 17, 2017

Effect of MK0524A on Flushing Caused by Niacin (0524A-056)

A Phase 3 interventional study of MK0524A, /Duration of Treatment : 4 Weeks and Comparator : niacin /Duration of Treatment : 1 Weeks in Flushing, sponsored by Merck Sharp & Dohme LLC. Completed. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2017-02-17.

Sponsored by Merck Sharp & Dohme LLC (part of Merck & Co., Inc) · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
330
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

The primary objective of the study is to assess the effects of MK0524A in reducing flushing associated with niacin.

02

Conditions studied

  • Flushing

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03

In context

Flushing

22 studies on the registry are indexed under Flushing; 5 are open to participants now.

This study's enrollment of 330 is above the median of 90 across 19 interventional studies indexed under Flushing.

Browse Flushing studies →

Lead sponsor

Merck Sharp & Dohme LLC is the lead sponsor of 2,166 studies on the registry; 132 are open to participants now.

Of its 501 completed or terminated interventional studies of FDA-regulated products, 370 (74%) have results posted.

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

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patient is male or female between 18 and 70 years of age
  • Females of must agree to take acceptable precautions for the duration of the study

Exclusion criteria

Exclusion Criteria:

  • Patient has a history of to niacin or niacin-containing products
  • Patient is currently experiencing menopausal hot flashes
  • Patient consumes more than 2 alcoholic beverages per day
  • Patient has poorly controlled Type 1 or Type 2 diabetes mellitus
  • Patient engages in vigorous exercise or an aggressive diet regimen
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Reproductive potential

Able to have children. For women this usually means from the first period until menopause, unless permanently unable to through surgery; for men, unless permanently sterile. Read who the line is about — participants, women, men, or their partners.

Criteria about it usually ask for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
330 participants

Interventions

  • DrugMK0524A, /Duration of Treatment : 4 Weeks
  • DrugComparator : niacin /Duration of Treatment : 1 Weeks
06

What researchers measure

Primary outcomes

  1. MK-0524A produces less flushing during the acute dosing period than niacin extended-release as measured by maximum Global Flushing Severity Score (GFSS) categorized as none/mild, moderate, severe, extreme.

    Time frame: Over 1 week

Secondary outcomes

  1. MK-0524A produces less flushing during the acute dosing period than niacin extended-release as measured by (a) maximum daily GFSS; and (b) percentage of patients with a maximum GFSS =4 (moderate or greater).

    Time frame: Daily

07

Study locations

No study locations are listed for this record.

08

References and documents

Publications

  • Kush D, Hu DY, Ye P, Kim HS, Chen E, Sirah W, McCrary Sisk C, Paolini JF, Maccubbin D. Flushing profile of extended-release niacin/laropiprant at initiation of therapy in Asian lipid clinic patients. Cardiology. 2009;114(3):192-8. doi: 10.1159/000228585. Epub 2009 Jul 15. PubMed 19602880 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 17, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00533611
Responsible party
Sponsor
First posted
Sep 21, 2007
Start date
Apr 2007
Primary completion
Aug 2007
Completion
Aug 2007
Last update
Feb 17, 2017

Study contacts

Medical Monitor
study director · Merck Sharp & Dohme LLC
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Feb 2017. You cannot join it, but the record below documents what was studied.

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