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Recombinant Human Alkaline Phosphatase in Healthy Japanese Subjects

A Double Blind, Randomized, Single Center, Single and Multiple Dose, Pharmacokinetic, Safety and Tolerability Study of Recombinant Human Alkaline Phosphatase (recAP) Administered Intravenously in Healthy Japanese Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04923282
Enrollment
34
Registered
2021-06-11
Start date
2021-05-07
Completion date
2021-12-31
Last updated
2022-03-14

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

Conditions

Healthy

Brief summary

Clinical Phase 1 study to investigate the pharmacokinetics and to assess the safety and tolerability of recAP after single and multiple intravenous doses in healthy Japanese subjects.

Detailed description

This study is a randomized, double blind, parallel group, single-center trial, consisting of a single dose part and a multiple dose part in 32 healthy Japanese subjects. Since all these doses have been studied before and safety extensively evaluated in non-Japanese subjects and no ethnic sensitivity is expected, the groups can be dosed in parallel. Part A will have 3 parallel groups of 8 male subjects with N=6 on active and N=2 on placebo per group. Following baseline assessments, a single dose of recAP will be administered by a one-hour infusion followed by samplings for pharmacokinetic evaluation and routine safety assessments. Part B will have a single group of 8 male subjects with N=6 on active and N=2 on placebo. Following baseline assessments, recAP will be dosed on Days 1, 2 and 3 by one-hour infusions followed by samplings for pharmacokinetic evaluation and routine safety assessments.

Interventions

BIOLOGICALsingle 1-hour IV infusion of 0.8 mg/kg recAP

Intravenous infusion

BIOLOGICALsingle 1-hour IV infusion of 1.6 mg/kg recAP

Intravenous infusion

BIOLOGICALsingle 1-hour IV infusion of 3.2 mg/kg recAP

Intravenous infusion

BIOLOGICAL1-hour infusions of 1.6 mg/kg recAP on Days 1, 2 and 3

Intravenous infusion

BIOLOGICALPlacebo

Intravenous infusion

Sponsors

AM-Pharma
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
MALE
Age
20 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

1. Gender : male 2. Age : 20-55 years, inclusive 3. Body mass index (BMI) : 18.0-30.0 kg/m2, inclusive 4. Subjects must be Japanese by birth, have resided outside Japan \<10 years, have parents and maternal and paternal grandparents who are Japanese, and primarily consume a Japanese diet. 5. Resting supine blood pressure at screening showing no clinically relevant deviations from normal as judged by the Principal Investigator. 6. Computerized (12-lead) ECG recording without signs of clinically relevant pathology or showing no clinically relevant deviations. 7. All values for hematology and for clinical chemistry tests of blood and urine within the normal range or showing no clinically relevant deviations as judged by the Investigator. 8. Ability and willingness to abstain from alcohol and tobacco products from 48 h prior to entry in the clinical research center until discharge. 9. Easily accessible veins for venipuncture and catheter placing. 10. Willingness to sign the written informed consent form (ICF). 11. Subjects must agree to use adequate contraception when sexually active. This applies for the time period between end of first administration and 14 days after the last administration of study drug.

Exclusion criteria

1. Evidence of clinically relevant pathology. 2. History of relevant drug and/or food allergies. 3. Subject has a history of clinically significant abnormalities or of any illness that, in the opinion of the study investigator, might confound the results of the study or poses an additional risk to the subject by their participation in the study. 4. Use of medication, except for acetaminophen (paracetamol), which is allowed up to 3 days before entry into the clinical research center (after that time the use of a limited amount of acetaminophen is permitted after consultation with the Principal Investigator). 5. Subject is mentally or legally incapacitated, has significant emotional problems at the time of screening visit or expected during the conduct of the study or has a history of a clinically significant psychiatric disorder over the last year. 6. Participation in a drug study within 60 days prior to drug administration. 7. Donation of more than 500 mL of blood within 60 days prior to drug administration. Donation of more than 1.5 liters of blood (for men) in the 10 months preceding the start of this study 8. Smoking more than 5 cigarettes, 1 cigar or 1 pipe daily. 9. History of alcohol abuse or drug addiction (including soft drugs like cannabis products). 10. Positive drug screen (opiates, methadone, cocaine, amphetamines, cannabinoids, barbiturates, benzodiazepines, tricyclic antidepressants) and/or alcohol breath test at Screening and/or Pre-Dose. 11. Intake of more than 14 units of alcohol per week (one unit of alcohol equals approximately 250 mL of beer, 100 mL of wine/Japanese Sake or 35 mL of spirits). 12. Positive screen on hepatitis B surface antigen (HBsAg), anti-hepatitis C virus (anti-HCV) or anti-human immunodeficiency virus (anti-HIV)-1 or anti-HIV-2 or HIV-1/2 antigen. 13. Illness within 5 days prior to (the first) drug administration.

Design outcomes

Primary

MeasureTime frameDescription
recAP elimination half-life ( t1/2) after multiple dosesMultiple doses 13 days treatment phaseBlood collection for t1/2 evaluation daily from Day 1 to Day 13
Time to attain maximum recAP serum concentration (Tmax) after multiple dosesMultiple doses 13 days treatment phaseBlood collection for Tmax evaluation daily from Day 1 to Day 13
Area under the plasma concentration versus time curve (AUC) after multiple dosesMultiple doses 13 days treatment phaseBlood collection for AUC evaluation daily from Day 1 to Day 13
Maximum observed recAP plasma concentration (Cmax) after single doseSingle dose 9 days treatment phaseBlood collection for cmax evaluation daily from Day 1 to Day 9
Time to attain maximum recAP serum concentration (Tmax) after single doseSingle dose 9 days treatment phaseBlood collection for Tmax evaluation daily from Day 1 to Day 9
Area under the plasma concentration versus time curve (AUC) after single doseSingle dose 9 days treatment phaseBlood collection for AUC evaluation daily from Day 1 to Day 9
recAP elimination half-life ( t1/2) after single doseSingle dose 9 days treatment phaseBlood collection for t1/2 evaluation daily from Day 1 to Day 9
Maximum observed recAP plasma concentration (Cmax) after multiple dosesMultiple doses 13 days treatment phaseBlood collection for cmax evaluation daily from Day 1 to Day 13

Secondary

MeasureTime frameDescription
Adverse events (AEs) after multiple dosesMultiple doses 13 days treatment phaseAny untoward medical occurrence in a subject enrolled into a clinical study regardless of its causal relationship to study drug.
Adverse events (AEs) after single doseSingle dose 9 days treatment phaseAny untoward medical occurrence in a subject enrolled into a clinical study regardless of its causal relationship to study drug.

Countries

Japan

Outcome results

None listed

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