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Identification of Null Allelic Variant of CYP2C8 In A Korean Population

The Effect of CYP2C8 E274Q, a Novel 23452 G>T SNP, on the Disposition of Rosiglitazone in Healthy Subjects: The Genetic Polymorphisms of CYP2C8 in a Korean Population

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01872780
Enrollment
11
Registered
2013-06-07
Start date
2008-08-31
Completion date
2009-03-31
Last updated
2013-06-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy

Keywords

CYP2C8, genetic polymorphism, rosiglitazone, Korean

Brief summary

The genotype profile of CYP2C8 was analyzed in a Korean population. Frequency in multi-ethnic population and in vivo functionality of novel null allelic CYP2C8 variant were evaluated.

Detailed description

Whole blood samples from 50 unrelated Korean subjects were genotyped for 3kb of 5' upstream region, all exon-intron boundaries, exons, and UTR regions of CYP2C8 gene by direct sequencing. Genotyping of CYP2C8 has been addressed only for null allelic variant, CYP2C8\*11 using pyrosequencing in the 447 Koreans, 93 African-Americans, 100 Caucasians, 348 Chineses and 100 Vietnameses. Then, in-vivo single PK study of CYP2C8 probe, rosiglitazone(4mg), was conducted in 7 healthy subjects with CYP2C8\*1/\*1 and 2 with CY2C8\*1/\*11.

Interventions

DRUGRosiglitazone

single oral administration of 4mg of rosiglitazone

GENETICCYP2C8 genotype

CYP2C8\*11.

Sponsors

Inje University
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
20 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* Healthy volunteer

Exclusion criteria

* Medical problems in taking probe drug

Design outcomes

Primary

MeasureTime frameDescription
AUC12hr0h,0.33h,0.66h,1h,1.5h,2h,3h,4h,6h,8h,12h,24h

Secondary

MeasureTime frameDescription
Cmax12hr0h,0.33h,0.66h,1h,1.5h,2h,3h,4h,6h,8h,12h,24h

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026