A Drug-drug Interaction Study to Evaluate the Effect of Rifampicin on the Pharmacokinetics of Methotrexate in Elderly Subjects

NCT ID: NCT06108453

Last Updated: 2023-10-31

Basic Information

• Recruitment Status: UNKNOWN
• Clinical Phase: PHASE1
• Total Enrollment: 10 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2023-08-21
• Study Completion Date: 2024-11-24

Brief Summary

To investigate the effect of rifampicin on the pharmacokinetics of methotrexate.

Conditions

Drug Interactions

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: BASIC_SCIENCE
• Blinding Strategy: NONE

Study Groups

Methotrexate

Group Type: EXPERIMENTAL

Methotrexate Sodium

Intervention Type: DRUG

Methotrexate oral administration alone

Methotrexate + Rifampicin

Methotrexate + Rifampicin

Group Type: EXPERIMENTAL

Methotrexate Sodium

Intervention Type: DRUG

Methotrexate oral administration alone

Rifampicin

Intervention Type: DRUG

Co-administration of methotrexate and rifampicin

Interventions

Methotrexate Sodium

Methotrexate oral administration alone

Intervention Type: DRUG

Rifampicin

Co-administration of methotrexate and rifampicin

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

1. Healthy elderly volunteers aged 70 to 80 years at the time of screening visit

2. Those whose weight is between 50.0 kg and 90.0 kg and whose BMI (kg/m2) is between 18.0 and 30.0 at the time of screening visit

※ BMI(Body mass index) = Weight (kg) / {Height (m2)}

3. Those who are suitable as test subjects for this test as determined by the investigator through physical examination, clinical laboratory performance examination, and questionnaire, etc.

4. Those who voluntarily decided to participate and agreed in writing to follow the precautions after receiving a detailed explanation of this clinical trial and fully understanding it before the screening test

Exclusion Criteria

1. Those with clinical evidence of significant respiratory, circulatory, kidney, gastrointestinal, liver, endocrine, blood, nerve (including ataxia), mental or other chronic diseases, alcohol or drug addiction within one year from the start date of the clinical trial (However, currently well-controlled hypertension, hyperlipidemia, arthritis, benign prostatic hyperplasia (mild), and cataracts (if surgery is performed) may be selected at the discretion of the investigator.)

2. Persons with a history of clinically significant hypersensitivity to clinical investigational drug ingredients or drugs containing ingredients of the same class, or other drugs (aspirin, antibiotics, etc.) or food

3. Those with a history of gastrointestinal disease (e.g. Crohn's disease, ulcer, etc.) or surgery (excluding simple appendectomy or hernia surgery) that may affect the absorption of the investigational drug

4. People with genetic problems such as galactose intolerance, Lapp lactase deficiency, or glucose-galactose malabsorption

5. Those who showed the following results in the screening test:

• Blood AST (SGOT), ALT (SGPT), total bilirubin: > 1.5 times the upper limit of normal range
• WBC count < 3,500 /μL
• eGFR (MDRD equation) < 60 mL/min/1.73 m2

6. Those who test positive for hepatitis B, hepatitis C, HIV, or syphilis in the screening test

7. Those with a history of drug abuse or who tested positive for drugs of abuse in a urine screening test

8. Those who drink alcohol continuously (exceeding 21 units/week, 1 unit = 10 g of pure alcohol) or who are unable to abstain from drinking during the clinical trial period

9. Those who tested positive in the alcohol breath test at the time of the screening test

10. Those who are unable to stop smoking during the entire clinical trial period, starting from 3 months before the scheduled date of first administration of the investigational drug

11. Those who have taken drugs with known significant drug interactions or drugs that are deemed unsuitable by the investigator within 14 days of administering the investigational drug (however, those who can take a break from medication for 7 days before administration and during the hospitalization period are excluded)

12. Persons who cannot refrain from consuming foods containing St. John's Wort or grapefruit during the entire clinical trial period, starting 14 days before the scheduled date of first administration of the investigational drug.

13. Persons who have continuously consumed excessive caffeine (>5 units/day) or who cannot refrain from consuming caffeine/caffeine-containing foods (coffee, tea, nutrient tonic drink drinks, etc.) during the entire clinical trial period from 7 days prior to the scheduled date of first administration of the investigational drug

14. Those who have taken prescription drugs or herbal medicine within 2 weeks before the first administration date, or who have taken over-the-counter drugs (OTC) or health functional foods within 7 days (however, if other conditions are appropriate according to the judgment of the investigator, participation in the clinical trial can participate)

15. A person who has participated in a clinical trial targeting other healthy people within at least 6 months prior to conducting the relevant clinical trial

16. Those who have donated whole blood or component blood within 1 month within 2 months before the scheduled date of first administration of the investigational drug, or who have received a blood transfusion within 1 month

17. Persons judged by the investigator to be unsuitable for participation in this clinical trial due to clinical laboratory test results or other reasons

• Minimum Eligible Age: 70 Years
• Maximum Eligible Age: 80 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Seoul National University Bundang Hospital

OTHER

Sponsor Role: lead

Responsible Party

Chung, Jae Yong

Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

Seoul National University Bundang Hospital

Gyeonggi-do, , South Korea

Countries

South Korea

Other Identifiers

MRIE

Identifier Type: -

Identifier Source: org_study_id