Study Will Evaluate the Relative Bioavailability, Safety, and Tolerability of Single Doses of Nifurtimox 30 mg Tablets Exhibiting Different in Vitro Dissolution Characteristics, and to Evaluate the Relative Bioavailability of Nifurtimox 30 mg and 120 mg

Chagas Disease Clinical Trial

Official title:

Open Label, Randomized, Single-dose, Cross-over Study to Evaluate the Relative Bioavailability, Safety, and Tolerability of Single Doses of Nifurtimox 30 mg Tablets Exhibiting Different in Vitro Dissolution Characteristics, and to Evaluate the Relative Bioavailability of Nifurtimox 30 mg and 120 mg Tablets, Administered to Adult Male and Female Patients With Chagas' Disease

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03350295
• Other study ID #: 16007
• Status: Completed
• Phase: Phase 1
• Start date: June 14, 2018
• Est. completion date: December 14, 2018

Study information

• Verified date: December 2019
• Source: Bayer
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Study to assess the relative Bioavailability To assess the relative bioavailability of three formulations of nifurtimox 30 mg tablets exhibiting different in vitro dissolution profiles To assess the pharmacokinetics (PK) of nifurtimox To investigate the safety and tolerability of nifurtimox.

Description:

Primary objective is to assess the relative bioavailability of three formulations of nifurtimox 30 mg tablets exhibiting different in vitro dissolution profiles (slow, medium, and fast, whereby "medium" represents the drug product currently used in clinical Phase 3 studies) under fed conditions in adult male and female patients with Chagas' disease.

A secondary objective of the study is to assess the relative bioavailability of nifurtimox after a single oral dose of 30 mg and 120 mg To assess the pharmacokinetics (PK) of nifurtimox To investigate the safety and tolerability of nifurtimox..

Recruitment information / eligibility

• Status: Completed
• Enrollment: 48
• Est. completion date: December 14, 2018
• Est. primary completion date: September 18, 2018
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 45 Years

Eligibility

Inclusion Criteria

• Women and men of reproductive potential must agree to use adequate contraception when sexually active. This applies for the time period between signing of the informed consent form and 12 weeks after the last administration of study drug. The definition of adequate contraception will be based on the judgment of the investigator and on local requirements. Acceptable methods of contraception include, but are not limited to: (i) condoms (male or female) with or without a spermicidal agent; (ii) diaphragm or cervical cap with spermicide; (iii) intra-uterine device; (iv) hormone-based contraception. Subjects must agree to utilize two reliable and acceptable methods of contraception simultaneously.

• Women of childbearing potential with confirmed last menstrual period by anamnesis and negative serum pregnancy test (beta-human chorionic gonadotropin [ßhCG]) at screening and negative urine pregnancy test (ßhCG) at pre-dose of each treatment.

• Women of non-childbearing potential, such as surgically sterile women with either written documentation of surgical sterility or negative serum pregnancy test (ßhCG) at screening and negative urine pregnancy test (ßhCG) at pre-dose of each treatment.

• Male subjects who agree not to act as sperm donors for 12 weeks after last administration of study drug.

• Age: 18 to 45 years (inclusive) at screening.

• Body mass index (BMI): =18 and <29.9 kg/m².

• Written informed consent must be provided before any study-specific tests or procedures are performed.

• Male/female patient diagnosed with chronic Chagas' disease:

• Previous diagnosis of acute or chronic Chagas' disease by a health clinic prior to screening for the study. The diagnosis of chronic Chagas' disease may be made by clinical findings, supported by antibody titers if available. If there is a known history of acute disease, it is preferable to have documentation of parasites on the blood smear, if available.

Exclusion Criteria

• Incompletely cured pre-existing diseases (except chronic Chagas' disease without active GI condition) for which it can be assumed that the absorption, distribution, metabolism, elimination, and effects of the study drugs will not be normal.

• Acute Chagas' disease. (During the acute phase, the parasite on a blood smear may be seen under a microscope. Different antibodies are present, depending on the course of the disease).

• Known hypersensitivity to the study drug (active substance or excipients of the preparations)

• Unstable or uncontrolled medical condition such as hypertension or diabetes, decompensated heart failure, GI conditions that would interfere with the absorption of the study drug (e.g. GI ulceration, peptic ulceration, GI bleeding, gastroesophageal reflux, or other GI disease affecting gastroesophageal junction), conditions that could potentially have an impact on drug metabolism or elimination (renal, hepatic such as known hepatic or biliary abnormalities), or any clinically relevant active infections in the opinion of the investigator within 4 weeks before the screening visit, e.g. clinically relevant history or presence of significant respiratory (e.g. interstitial lung disease), hematological, lymphatic, neurological, cardiovascular, psychiatric, musculoskeletal, genitourinary, immunological, metabolic (e.g. diabetes), and dermatological or connective tissue disease.

• Use of systemic or topical medicines or substances which oppose the study objectives (including clinical treatment with nifurtimox and benznidazole) or which might influence them within 4 weeks before the first study drug administration, e.g. an investigational drug, any drug altering GI motility and/or gastric pH (e.g. antacids, anticholinergic, para-sympatholytics), any drug known to induce liver enzymes (e.g. dexamethasone, barbiturates, St. John's Wort [hypericum perforatum]), any drug known to inhibit liver enzymes (e.g. ketoconazole, macrolides).

• Clinically relevant findings in the ECG such as a second- or third-degree atrioventricular block, prolongation of the QRS complex over 120 msec or of the QT interval over 450 msec using Bazett's formula (QTcB). (Clinically stable subjects with Chagas'-related heart disease and pacemaker in place for >1 year and evaluated by a cardiologist =6 months before the first dose of study drug will not be excluded.)

• Systolic blood pressure <100 or >140 mmHg (after resting in supine position for a minimum of 3 minutes).

• Diastolic blood pressure <50 or >90 mmHg (after resting in supine position for a minimum of 3 minutes).

• Findings that would exclude the subject in the investigator's judgment, e.g. enlarged liver, irregular heartbeat, undiagnosed acute illness, and melanoma.

• Positive pregnancy test.

• Positive results for hepatitis B virus surface antigen (HBsAg), hepatitis C virus antibodies (anti-HCV), or human immunodeficiency virus antibodies (anti-HIV 1+2).

• Positive urine drug screening..

Related Conditions & MeSH terms

• Chagas Disease

Intervention

Drug:
• Nifurtimox (Lampit, BAYA2502)
Oral Intake of 4 x 30 mg nifurtimox tablets for treatment A-C; Oral Intake of 1 x 30 mg nifurtimox tablets for treatment D Oral intake of 1 x 120 mg nifurtimox tablet for treatment E

Locations

Country	Name	City	State
Argentina	FP Clinical Pharma	Buenos Aires	Ciudad Auton. De Buenos Aires

Sponsors (1)

Lead Sponsor	Collaborator
Bayer

Country where clinical trial is conducted

Argentina, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	AUC(0-tlast) of nifurtimox	AUC(0-tlast):Area under the drug-concentration vs. time curve of nifurtimox from time 0 to the last data point	0, 15, 30, 45 min, 1, 1.5, 2, 2.5, 3, 4, 6, 8,12,15 hour
Primary	Cmax of nifurtimox	Cmax: Maximum observed drug concentration in measured matrix after single dose administration	0, 15, 30, 45 min, 1, 1.5, 2, 2.5, 3, 4, 6, 8,12,15 hour
Primary	AUC of nifurtimox	AUC: Area under the concentration versus time curve from zero to infinity after single (first) dose	0, 15, 30, 45 min, 1, 1.5, 2, 2.5, 3, 4, 6, 8,12,15 hour
Secondary	Number of participants with adverse events		up to 8 weeks
Secondary	AUC divided by dose: AUC/D		0, 15, 30, 45 min, 1, 1.5, 2, 2.5, 3, 4, 6, 8,12,15 hour
Secondary	AUC(0-tlast) divided by dose: AUC(0-tlast)/D		0, 15, 30, 45 min, 1, 1.5, 2, 2.5, 3, 4, 6, 8,12,15 hour
Secondary	Cmax divided by dose: Cmax/D		0, 15, 30, 45 min, 1, 1.5, 2, 2.5, 3, 4, 6, 8,12,15 hour

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