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Drug-drug Interaction Study with GLPG3970 and Sulfasalazine in Adult, Healthy Subjects

A Phase 1, Fixed Sequence, Open-label, Drug-drug Interaction Study to Evaluate the Effect of GLPG3970 on the Pharmacokinetics of Sulfasalazine in Adult, Healthy Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04720183
Enrollment
8
Registered
2021-01-22
Start date
2021-01-11
Completion date
2021-04-23
Last updated
2024-09-19

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

Conditions

Healthy

Brief summary

GLPG3970 will be given with sulfasalazine to investigate the effect of co-administration on the pharmacokinetics of sulfasalazine, and on the safety and tolerability of the drugs in healthy adult subjects.

Interventions

DRUGSulfasalazine

On Day 1, Day 5 and Day 9, a single oral dose of sulfasalazine tablets in fasted state.

On Day 5 and Day 9, a single dose of GLPG3970 oral solution in fasted state.

Sponsors

Galapagos NV
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SEQUENTIAL
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* Male or female between 18 and 55 years of age (extremes included), on the date of signing the informed consent form (ICF). Females should be of non-childbearing potential. * A body mass index (BMI) between 18.0 to 30.0 kg/m2, inclusive. * A breast cancer resistance protein (BCRP) c421C/C genotype. * Judged to be in good health by the investigator based upon the results of a medical history, physical examination, vital signs, 12-lead electrocardiogram (ECG), and fasting clinical laboratory safety tests, available at screening and prior to the first sulfasalazine administration. Bilirubin, aspartate aminotransferase (AST), and alanine aminotransferase (ALT) must be no greater than 1.5x upper limit of normal range (ULN). Other clinical laboratory safety test results must be within the reference ranges or test results that are outside the reference ranges need to be considered not clinically significant in the opinion of the investigator. This list only contains the key inclusion criteria.

Exclusion criteria

* Known hypersensitivity to the investigational product (IP) (GLPG3970), or sulfasalazine, or sulfa drugs, or to their ingredients, or history of a significant allergic reaction to IP or sulfasalazine ingredients as determined by the investigator. * Positive serology for hepatitis B virus surface antigen (HBsAg) or hepatitis C virus (HCV) or history of hepatitis from any cause with the exception of hepatitis A that was resolved at least 3 months prior to first dosing of sulfasalazine. * History of or a current immunosuppressive condition (e.g. human immunodeficiency virus (HIV) infection). * Having any illness, judged by the investigator as clinically significant, in the 3 months prior to first dosing of sulfasalazine. * Presence or sequelae of gastrointestinal, liver, kidney (estimated glomerular filtration rate (eGFR) \<=90 mL/min/1.73 m2, using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) formula) or other conditions known to interfere with the absorption, distribution, metabolism, or excretion of drugs. * Subjects with an N-acetyltransferase 2 (NAT2) slow acetylator genotype. This list only contains the key

Design outcomes

Primary

MeasureTime frameDescription
Sulfapyridine to sulfasalazine AUC ratioBetween Day 1 pre-dose and Day 12To evaluate the effect of GLPG3970 on the pharmacokinetics (PK) of sulfasalazine and its active metabolite sulfapyridine in healthy subjects.
Cmax of sulfapyridineBetween Day 1 pre-dose and Day 12To evaluate the effect of GLPG3970 on the pharmacokinetics (PK) of sulfasalazine and its active metabolite sulfapyridine in healthy subjects.
Area under the plasma concentration-time curve from time zero to infinity (AUC0-inf) of sulfasalazineBetween Day 1 pre-dose and Day 12To evaluate the effect of GLPG3970 on the pharmacokinetics (PK) of sulfasalazine and its active metabolite sulfapyridine in healthy subjects.
AUC0-inf of sulfapyridineBetween Day 1 pre-dose and Day 12To evaluate the effect of GLPG3970 on the pharmacokinetics (PK) of sulfasalazine and its active metabolite sulfapyridine in healthy subjects.
Maximum observed concentration (Cmax) of sulfasalazineBetween Day 1 pre-dose and Day 12To evaluate the effect of GLPG3970 on the pharmacokinetics (PK) of sulfasalazine and its active metabolite sulfapyridine in healthy subjects.

Secondary

MeasureTime frameDescription
Maximum observed concentration (Cmax) of GLPG3970Between Day 5 pre-dose and Day 10To evaluate the PK of GLPG3970 in presence of sulfasalazine in healthy subjects
Area under the plasma concentration-time curve from time zero till the last observed quantifiable concentration (AUC0-t)Between Day 5 pre-dose and Day 10To evaluate the PK of GLPG3970 in presence of sulfasalazine in healthy subjects
Number of Participants with Treatment-emergent Adverse Events (TEAEs) by SeverityFrom Day 1 through study completion, an average of 1 monthTo evaluate the safety and tolerability of the coadministration of GLPG3970 with sulfasalazine in healthy subjects

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 5, 2026