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Phase 1 N=36 Randomized Treatment

Multiple Ascending Dose Study of Oxfendazole in Healthy Adult Volunteers

Helminthic Infection

Enrolled (actual)
36
Serious AEs
0.0%
Results posted
Dec 2019
Primary outcome: Primary: Number of Subjects Reporting Adverse Events (AEs) Related to Oxfendazole for Arms 1, 2, and 3 — 3; 3; 1 Participants

Study Design & Population

Study type
Interventional
Phase
Phase 1
Interventions
Oxfendazole (Drug)
Age
Adult · 18+ yrs
Sex
All
Sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
Primary completion
Apr 2018

Outcome Measures

OutcomeResultp-value
PRIMARY
Number of Subjects Reporting Adverse Events (AEs) Related to Oxfendazole for Arms 1, 2, and 3
3; 3; 1
PRIMARY
Number of Subjects Reporting Adverse Events (AEs) Related to Oxfendazole for Arm 4
1; 2
SECONDARY
Area Under the Concentration Time-curve for a Single Dosing Interval (AUCtau) of Oxfendazole for Arm 1, 2 and 3
30200; 52500; 71800; 38200; 65700; 69600
SECONDARY
Area Under the Concentration Time-curve to the Time of Last Measured Concentration (AUClast) of Oxfendazole for Arm 4
58900; 31600
SECONDARY
Maximum Observed Concentration (Cmax) of Oxfendazole in Plasma for Arms 1, 2, and 3
2960; 4160; 5990; 3500; 5980; 6000
SECONDARY
Maximum Observed Concentration (Cmax) of Oxfendazole in Plasma for Arm 4
4500; 3010
SECONDARY
Terminal Elimination Half-life (t1/2) of Oxfendazole for Arms 1, 2, and 3
7.98; 8.54; 8.35; 9.47; 11.00; 12.00
SECONDARY
Terminal Elimination Half-life (t1/2) of Oxfendazole for Arm 4
8.05; 7.65
SECONDARY
Time of Maximum Observed Concentration (Tmax) of Oxfendazole for Arms 1, 2, and 3
1.96; 2.02; 2.56; 1.92; 2.02; 2.49
SECONDARY
Time of Maximum Observed Concentration (Tmax) of Oxfendazole for Arm 4
8.9; 1.99

Summary

This Phase I study is an open label multiple ascending dose evaluation of the safety and PK of oxfendazole (3, 7.5, or 15 mg/kg) given orally daily to healthy adult men and nonpregnant women aged 18-45 followed by a single dose cross over trial evaluating the safety and pharmacokinetics of a single dose of oxfendazole (3 mg/kg) given following an 8 hour fast or following a high fat meal. The study duration will be approximately 12 months with each subject participation lasting approximately 6 weeks. In the multiple ascending dose evaluation, between 8 and 24 subjects will be enrolled; each dose group will be comprised of eight volunteers. To enhance safety, one sentinel subject will be dosed for five days and monitored for 7 days from the time of the first dose for predefined adverse events. If there are no predefined safety events, a second sentinel subject will be enrolled and followed for a total of 7 days. If there are no predefined safety signals identified for either of these two sentinel subjects, the remaining subjects in the group will be enrolled. After all eight subjects have completed the 10 day follow up period, an electronic safety review of the electronic data will be performed. If none of the predefined safety events have occurred DMID will approve enrollment into the second dose group (7.5 mg/kg oxfendazole daily x 5 days) and will be monitored for a total of 7 days each for predefined adverse events prior to enrolling the remaining subjects in the group. After the 10 day follow up period has been completed for group 2, an electronic safety review will be completed and if no predefined events have occurred two sequential subjects (one at a time with 7 days between each subject) will be enrolled into the third dose group (15 mg/kg oxfendazole daily x 5 days) and will be monitored for a total of 7 days each for predefined safety events prior to enrolling the remaining subjects in the group. In the food effects evaluation, 12 subjects will be enrolled into the single dose cross over group where half of the subjects will initially receive a single dose of 3 mg/kg of oxfendazole following an 8 hour fast and the other half will receive a single dose of 3 mg/kg of oxfendazole following a high fat meal. Subjects will then cross over to receive a single dose following a high fat breakfast or fasting period (water is permitted). All subjects will have received a dose of oxfendazole following both a fasting period and a meal. The primary objectives are: 1) To assess the safety of oxfendazole administered daily for five days; and 2) To assess the safety of oxfendazole administered as a single dose with or without food.

Eligibility Criteria

Inclusion Criteria

  • Males and nonpregnant females between the ages of 18 and 45 years, inclusive.
  • Women of childbearing potential* must agree to practice adequate contraception** for the 28-day period before Day 0 through 4 months after the last dose of study medication.
  • A woman is considered of childbearing potential unless surgically sterile (tubal ligation, bilateral oophorectomy, or hysterectomy) or post-menopausal (=1 year).

**Acceptable birth control methods include but are not limited to: abstinence from sexual intercourse with men; monogamous relationship with a vasectomized partner; double-barrier methods (condoms, diaphragms, spermicides); intrauterine devices; and licensed hormonal methods.

  • In good health, as judged by the investigator and determined by vital signs*

*Temperature 50 bpm, systolic blood pressure 89 mmHg, diastolic blood pressure = 18 and = 45 may be enrolled at the discretion of the principal investigator or designated licensed clinical investigator. Acceptable screening laboratories: Hemoglobin, white blood cell (WBC) count, neutrophil, and platelet counts, INR and PTT within normal ranges. AST =100.4°F (>=38.0°C) or acute illness within 3 days before administration of study drug (subject may be rescheduled).

  • Chronic or acute medical disorder*
  • Disorders of the cardiac, pulmonary, liver, kidney, neurologic, gastrointestinal or other system, such that in the opinion of the investigator participation in the study creates additional risk to the subject, or to the validity of the study.
  • Use of chronic systemic medications* *Intermittent use of over the counter medications such as acetaminophen, ibuprofen, cold and sinus medications are permitted for enrollment Topical medications, nasal steroids are permitted throughout the study. Use of prescription medications used less than once per week on average are permitted for enrollment. If the subject has taken a short term prescription medication within the past 30 days (e.g. an antibiotic), they should be postponed from enrollment until 30 days have elapsed since the last dose.
  • Has history of sensitivity to related benzimidazole compounds (e.g., albendazole, mebendazole).
  • A diagnosis of schizophrenia, bipolar disease, or history of hospitalization for a psychiatric condition or previous suicide attempt.
  • A history of treatment for any other psychiatric disorder in the past 3 years.*

*Past treatment for ADHD does not exclude participants from enrollment as long as the medications have been discontinued for a minimum of 3 months and symptoms are well controlled.

  • Received an experimental agent* within 1 month before administration of study drug or expect to receive an experimental agent during the 10 or 14-day study period.

*Vaccine, drug, biologic, device, blood product, or medication.

  • Any condition that would, in the opinion of the investigator, interfere with the study.*

*This includes any condition that would place them at an unacceptable risk of injury, render them unable to meet the requirements of the protocol, or that may interfere with successful completion of the study.

  • A history of heavy alcohol* or illicit drug use**, or history of substance abuse#.

*On average, greater than 7 alcoholic drinks per week. .

**Other than occasional marijuana use (less than once per week for the past 60 days is acceptable).

#Alcohol or illicit drugs within the past 3 years.

  • History of chronic tobacco use in the past 60 days.* *A history of occasional tobacco use (less than 1 pack per week on average) is acceptable. Individuals will be counseled to abstain from use of tobacco and marijuana from screening through day 10 or 14.
View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT03035760). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.

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