Aldehyde Dehydrogenase-2 (ALDH2) DeficiencyPhase 2NCT00661141
Phase IIa Study of Fomepizole for Acetaldehyde Toxicity After Ethanol Exposure in Subjects With Altered Ethanol Metabolism
A Phase 2 study testing Antizol and Ethanol in people with Aldehyde Dehydrogenase-2 (ALDH2) Deficiency, run by Amgen at 1 site in United States.
Trial summary
This trial will evaluate if fomepizole (4-methylpyrazole) can treat symptoms associated with alcohol intolerance due to aldehyde dehydrogenase 2 (ALDH2) deficiency, an inherited metabolic disorder. Read more about this study
- Who is it for?
- Ages 21 to 50 yearsHealthy volunteers can take part
- Conditions the study is for
- Aldehyde Dehydrogenase-2 (ALDH2) Deficiency
- What is being tested?
- Antizol and Ethanol
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 32 participants
- Where
- 1 siteUnited States
- Study dates
- Apr 2008to Jun 2008
- Phase
- Phase 2
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 21 to 50 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Signed informed consent
- Age 21 to 50 years
- Subject of Japanese descent
- History of flushing, with or without palpitations, or nausea (Alcohol Sensitivity Screening Test ≥ 3.1) following occasional or inadvertent ethanol consumption either currently or in the past
- Subjects must be healthy volunteers with no other clinically relevant abnormalities as determined by medical history, blood chemistry, complete blood count (CBC), urinalysis,and 12-lead electrocardiogram (ECG)
- Positive skin ethanol patch test (100 μL of 70% ethanol on a lint pad applied to skin for 7 minutes results in an area of erythema)
- For Cohort 4, enrolled subjects were either homozygous or heterozygous for the ALDH2*2 genotype as assessed by genotyping at Screening
Who cannot join
- Vaccination within 2 weeks of Day 1
- Current respiratory disease or a past history of chronic respiratory disease, or current smoker within last six months
- Any one of the following Screening ECG findings:
- QTc (Bazett) interval duration greater than 450 msec (male) or 470 msec (female), or
- QRS interval greater than 120 msec, or
- PR interval greater than 220 msec
Show all 30Show fewer
- History or evidence of drug or alcohol abuse or regular consumption of more than 8 units of alcohol daily (1 unit = 300 mL beer, 1 glass wine, 1 measure spirit) or those who may have difficulty abstaining from non study alcohol during the 36 hours prior to dose administration and until completion of blood sampling on Day 7
- Subjects who have donated blood totalling more than 550 mL within the 3 months prior to Day 1
- Use of any prescription medication other than oral contraceptives during the 14 days prior to Day 1, unless approved by both the Principal Investigator (PI) and the Sponsor
- Inability to abstain from smoking any tobacco product from within prior to 2 hours of blood sampling to after 2 hours of blood sampling during the study period.
- Use of any over-the-counter product, herbal product, diet aid, hormone supplement, etc., within 14 days prior to Day 1 unless approved by both the PI and the Sponsor
- Chronic use of pain medications
- Administration of an investigational agent within the last 30 days (or within a period of less than 5 times the agent's half-life, whichever is longer) prior to Day 1
- Major surgery within 60 days prior to Day 1, or any planned surgery or medical procedure during the study period (through Day 7)
- Positive alcohol breath-test or Positive drug screen (e.g., opiates, barbiturates, cannabinoids, benzodiazepines, cocaine, amphetamines) during screening or at Day 0 Check-In
- Known hypersensitivity reaction to Antizol® or other pyrazoles, tomato juice
- Abnormal laboratory results, including:
- WBC ≤3.5 × 109/L or neutrophil count ≤2.0 × 10^9/L
- Hemoglobin <12.0 or >16.0 gm/dL
- Creatinine ≥2 mg/dL
- Total bilirubin ≥2 mg/dL
- Alanine aminotransferase and/or aspartate aminotransferase ≥2 times the upper limit of normal
- PaO2 ≤95% on room air by pulse oximetry
- Urine dipstick positive for protein, blood, ketones, glucose or leukocyte esterase
- Any other clinically significant abnormal result for hematology, clinical chemistry, or urinalysis at screening or check-In
- Positive serum pregnancy test for females of childbearing potential
- Subject and/or partner unable or unwilling to use an effective form of barrier contraceptives during the course of the study and for 7 days after study drug administration.
- Cancer (excluding adequately treated basal cell carcinoma) within the last 5 years
- Significant past medical history of hepatic, renal, cardiovascular (including family history of prolonged QT syndrome), pulmonary, gastrointestinal, hematological, locomotor, immunologic, ophthalmologic, metabolic endocrine or other diseases; or any condition that in the opinion of the Investigator would complicate or compromise the study, or the well-being of the subject
- Any other reason, which in the opinion of the Principal Investigator, would prevent the subject from completing or following the study schedule
Trial locations and contacts
1 site in 1 country.
About this study
Official title: A Phase IIa, Prospective, Randomized, Blinded, Intra-Subject Controlled, Single Dose, Dose Escalation Study of Antizol® for Mitigation of Acetaldehyde Related Toxicity in Human Subjects With Symptoms of Inborn Altered Ethanol Metabolism With Concomitant Ethanol Exposure
This trial will evaluate if fomepizole (4-methylpyrazole) can treat symptoms associated with alcohol intolerance due to aldehyde dehydrogenase 2 (ALDH2) deficiency, an inherited metabolic disorder. These symptoms include flushing, nausea, headache, shortness of breath and dizziness, resulting from exposure to acetaldehyde, the primary metabolite of ethanol. Long-term, serious health risks have been associated with repeated exposure to acetaldehyde, a carcinogen, among ALDH2-deficient individuals.
Read the detailed description
Approximately 32 subjects will be enrolled in ascending dosing cohorts of 8 subjects each. Each subject will receive an oral dose of study drug (fomepizole or placebo) with concomitant ethanol with group assignment in a randomized 1:1:1:1 ratio (2 subjects each group) on Study Day 1. Each subject is their own intra-subject control with the alternative study drug (fomepizole or placebo) administered on the next day (Study Day 2). Four subjects in each cohort will receive study drug (fomepizole or placebo) administered 30 minutes prior to ethanol, 4 with study drug (fomepizole or placebo) administered 30 minutes after ethanol. The study will assess safety and tolerability of fomepizole and the PK/PD of 4-MP, ethanol and acetaldehyde in the subject population.
Study with completed results acquired from Horizon in 2024.
- Being tested
- Antizol, Placebo, Ethanol
- Keywords
- acetaldehyde, ethanol, ALDH2
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
AntizolDrug
Also called fomepizole, 4-methylpyrazole, 4-MP
PlaceboDrug
EthanolOther
oral dose of ethanol (0.5 g/kg)
| Study group | Role | What they receive |
|---|---|---|
| Cohort 1: Antizol 1.0 mg/kg | Experimental | Participants receive alternating study treatment (oral fomepizole 1.0 mg/kg or placebo) on 2 sequential days (Study Day 1 and Study Day 2), administered 30 minutes prior to ethanol or 30 minutes after ethanol. Receives: Drug: Antizol; Drug: Placebo; Other: Ethanol |
| Cohort 2: Antizol 3.0 mg/kg | Experimental | Participants receive alternating study treatment (oral fomepizole 3.0 mg/kg or placebo) on 2 sequential days (Study Day 1 and Study Day 2), administered 30 minutes prior to ethanol or 30 minutes after ethanol. Receives: Drug: Antizol; Drug: Placebo; Other: Ethanol |
| Cohort 3: Antizol 5.0 mg/kg | Experimental | Participants receive alternating study treatment (oral fomepizole 5.0 mg/kg or placebo) on 2 sequential days (Study Day 1 and Study Day 2), administered 30 minutes prior to ethanol. Receives: Drug: Antizol; Drug: Placebo; Other: Ethanol |
| Cohort 4: Antizol 1.0 mg/kg | Experimental | Participants receive alternating study treatment (oral fomepizole 7.0 mg/kg or placebo) on 2 sequential days (Study Day 1 and Study Day 2), administered 30 minutes prior to ethanol. Receives: Drug: Antizol; Drug: Placebo; Other: Ethanol |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Participants With Adverse Events (AEs), Serious AEs, and AEs Leading to Study Discontinuation
AEs were collected to evaluate the safety and tolerability of oral Antizol with concomitant ethanol administration in particitpants with symptoms of acetaldehyde toxicity associated with altered ethanol metabolism. AE: any untoward medical event that occurs following the first administration of study medication until the study participant's last study visit, whether or not the event is considered drug related. SAE: an event that meets any of the following criteria: results in death; is life threatening; requires inpatient hospitalization or prolongation of an existing hospitalization; results in persistent or significant disability/incapacity; is a congenital anomaly/birth defect in the offspring of an exposed subject; is medically significant or an important medical event as assessed by investigator or sponsor; is, in the opinion of the investigator, an important medical event.
Measured: Study Day 0 through Study Visit Day 7
Secondary outcomes (31)
Pharmacokinetics (PK) of 4-MP: Maximum Plasma Concentration (Cmax)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: Dose-Normalized (DN) Cmax
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: Time to Cmax (Tmax)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: Area Under the Plasma Concentration-Time Curve (AUC), Calculated to the Last Measured Concentration (AUC[0-t])
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: DN AUC(0-t)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: AUC, From Time 0 Extrapolated to Infinite Time (AUC[0-∞])
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: DN AUC(0-∞)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: Percentage of AUC0-∞ Obtained by Extrapolation (AUC%Extrap)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: Half-Life (T1/2)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: Apparent Clearance (CL/F)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: Apparent Volume of Distribution During Terminal Phase (Vz/F)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: Cmax
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: DN Cmax
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: Tmax
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: AUC(0-t)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: DN AUC(0-t)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: AUC(0-∞)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: DN AUC(0-∞)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: AUC%Extrap
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: T1/2
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: CL/F
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: Vz/F
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: Cmax
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: DN Cmax
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: Tmax
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: AUC(0-t)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: DN AUC(0-t)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: AUC(0-∞)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: DN AUC(0-∞)
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: AUC%Extrap
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: T1/2
Measured: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 Apr 2008 (estimated)
- Study startApr 2008
- Primary completionJun 2008
- Study completionJun 2008
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (4)Papers the sponsor has linked to this study.
- Other trials for Aldehyde Dehydrogenase-2 (ALDH2) DeficiencyStudies of the same condition, open and under way.
- More trials run by AmgenThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Care provider, Investigator
- Enrolment
- 32 participants (actual)
Sponsor and investigators
- Lead sponsor
- Amgen
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- MD, Study director, Amgen
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00661141
- Sponsor's protocol ID
- BP1-01-01
- Status last verified
- Dec 2024
- First submitted
- 16 Apr 2008
- Last updated
- 27 Dec 2024
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Publications
Inoue K, Fukunaga M, Kiriyama T, Komura S. Accumulation of acetaldehyde in alcohol-sensitive Japanese: relation to ethanol and acetaldehyde oxidizing capacity. Alcohol Clin Exp Res. 1984 May-Jun;8(3):319-22. doi: 10.1111/j.1530-0277.1984.tb05519.x.
PubMed 6377951Inoue K, Kera Y, Kiriyama T, Komura S. Suppression of acetaldehyde accumulation by 4-methylpyrazole in alcohol-hypersensitive Japanese. Jpn J Pharmacol. 1985 May;38(1):43-8. doi: 10.1254/jjp.38.43.
PubMed 4021229Tardif R, Liu L, Raizenne M. Exhaled ethanol and acetaldehyde in human subjects exposed to low levels of ethanol. Inhal Toxicol. 2004 Apr;16(4):203-7. doi: 10.1080/08958370490277272.
PubMed 15204767Yokoyama T, Yokoyama A, Kato H, Tsujinaka T, Muto M, Omori T, Haneda T, Kumagai Y, Igaki H, Yokoyama M, Watanabe H, Yoshimizu H. Alcohol flushing, alcohol and aldehyde dehydrogenase genotypes, and risk for esophageal squamous cell carcinoma in Japanese men. Cancer Epidemiol Biomarkers Prev. 2003 Nov;12(11 Pt 1):1227-33.
PubMed 14652286
Study at a glance
From the registry record, last updated by the sponsor on 27 Dec 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase IIa, Prospective, Randomized, Blinded, Intra-Subject Controlled, Single Dose, Dose Escalation Study of Antizol® for Mitigation of Acetaldehyde Related Toxicity in Human Subjects With Symptoms of Inborn Altered Ethanol Metabolism With Concomitant Ethanol Exposure
- ClinicalTrials.gov ID
- NCT00661141
- Acronym / sponsor ID
- BP1-01-01
- Keywords
- acetaldehyde, ethanol, ALDH2
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 32 participants (actual)
- Lead sponsor
- AmgenIndustry (pharma, biotech, devices)
- Study start
- Apr 2008
- Primary completion
- Jun 2008 (actual)
- Study completion
- Jun 2008 (actual)
- First posted
- 18 Apr 2008 (estimated)
- Results
- Posted 15 Sep 2017
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This trial will evaluate if fomepizole (4-methylpyrazole) can treat symptoms associated with alcohol intolerance due to aldehyde dehydrogenase 2 (ALDH2) deficiency, an inherited metabolic disorder. These symptoms include flushing, nausea, headache, shortness of breath and dizziness, resulting from exposure to acetaldehyde, the primary metabolite of ethanol. Long-term, serious health risks have been associated with repeated exposure to acetaldehyde, a carcinogen, among ALDH2-deficient individuals.
Detailed description
Approximately 32 subjects will be enrolled in ascending dosing cohorts of 8 subjects each. Each subject will receive an oral dose of study drug (fomepizole or placebo) with concomitant ethanol with group assignment in a randomized 1:1:1:1 ratio (2 subjects each group) on Study Day 1. Each subject is their own intra-subject control with the alternative study drug (fomepizole or placebo) administered on the next day (Study Day 2). Four subjects in each cohort will receive study drug (fomepizole or placebo) administered 30 minutes prior to ethanol, 4 with study drug (fomepizole or placebo) administered 30 minutes after ethanol. The study will assess safety and tolerability of fomepizole and the PK/PD of 4-MP, ethanol and acetaldehyde in the subject population.
Study with completed results acquired from Horizon in 2024.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, care provider, investigator)
- Number of arms
- 4
| Arm | Type | Receives |
|---|---|---|
| Cohort 1: Antizol 1.0 mg/kg | Experimental | Drug: Antizol, Drug: Placebo, Other: EthanolParticipants receive alternating study treatment (oral fomepizole 1.0 mg/kg or placebo) on 2 sequential days (Study Day 1 and Study Day 2), administered 30 minutes prior to ethanol or 30 minutes after ethanol. |
| Cohort 2: Antizol 3.0 mg/kg | Experimental | Drug: Antizol, Drug: Placebo, Other: EthanolParticipants receive alternating study treatment (oral fomepizole 3.0 mg/kg or placebo) on 2 sequential days (Study Day 1 and Study Day 2), administered 30 minutes prior to ethanol or 30 minutes after ethanol. |
| Cohort 3: Antizol 5.0 mg/kg | Experimental | Drug: Antizol, Drug: Placebo, Other: EthanolParticipants receive alternating study treatment (oral fomepizole 5.0 mg/kg or placebo) on 2 sequential days (Study Day 1 and Study Day 2), administered 30 minutes prior to ethanol. |
| Cohort 4: Antizol 1.0 mg/kg | Experimental | Drug: Antizol, Drug: Placebo, Other: EthanolParticipants receive alternating study treatment (oral fomepizole 7.0 mg/kg or placebo) on 2 sequential days (Study Day 1 and Study Day 2), administered 30 minutes prior to ethanol. |
Who may qualify
- Ages
- 21 to 50 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (7 listed)
- Signed informed consent
- Age 21 to 50 years
- Subject of Japanese descent
- History of flushing, with or without palpitations, or nausea (Alcohol Sensitivity Screening Test ≥ 3.1) following occasional or inadvertent ethanol consumption either currently or in the past
- Subjects must be healthy volunteers with no other clinically relevant abnormalities as determined by medical history, blood chemistry, complete blood count (CBC), urinalysis,and 12-lead electrocardiogram (ECG)
Key exclusion criteria (30 listed)
- Vaccination within 2 weeks of Day 1
- Current respiratory disease or a past history of chronic respiratory disease, or current smoker within last six months
- Any one of the following Screening ECG findings:
- History or evidence of drug or alcohol abuse or regular consumption of more than 8 units of alcohol daily (1 unit = 300 mL beer, 1 glass wine, 1 measure spirit) or those who may have difficulty abstaining from non study alcohol during the 36 hours prior to dose administration and until completion of blood sampling on Day 7
- Subjects who have donated blood totalling more than 550 mL within the 3 months prior to Day 1
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| AntizolAlso: fomepizole, 4-methylpyrazole, 4-MP | Drug | Cohort 1: Antizol 1.0 mg/kg, Cohort 2: Antizol 3.0 mg/kg, Cohort 3: Antizol 5.0 mg/kg, Cohort 4: Antizol 1.0 mg/kg |
| Placebo | Drug | Cohort 1: Antizol 1.0 mg/kg, Cohort 2: Antizol 3.0 mg/kg, Cohort 3: Antizol 5.0 mg/kg, Cohort 4: Antizol 1.0 mg/kg |
| Ethanoloral dose of ethanol (0.5 g/kg) | Other | Cohort 1: Antizol 1.0 mg/kg, Cohort 2: Antizol 3.0 mg/kg, Cohort 3: Antizol 5.0 mg/kg, Cohort 4: Antizol 1.0 mg/kg |
Primary outcome
Number of Participants With Adverse Events (AEs), Serious AEs, and AEs Leading to Study Discontinuation
Time frame: Study Day 0 through Study Visit Day 7
AEs were collected to evaluate the safety and tolerability of oral Antizol with concomitant ethanol administration in particitpants with symptoms of acetaldehyde toxicity associated with altered ethanol metabolism. AE: any untoward medical event that occurs following the first administration of study medication until the study participant's last study visit, whether or not the event is considered drug related. SAE: an event that meets any of the following criteria: results in death; is life threatening; requires inpatient hospitalization or prolongation of an existing hospitalization; results in persistent or significant disability/incapacity; is a congenital anomaly/birth defect in the offspring of an exposed subject; is medically significant or an important medical event as assessed by investigator or sponsor; is, in the opinion of the investigator, an important medical event.
31 secondary outcomes
Pharmacokinetics (PK) of 4-MP: Maximum Plasma Concentration (Cmax)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: Dose-Normalized (DN) Cmax
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: Time to Cmax (Tmax)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: Area Under the Plasma Concentration-Time Curve (AUC), Calculated to the Last Measured Concentration (AUC[0-t])
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: DN AUC(0-t)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: AUC, From Time 0 Extrapolated to Infinite Time (AUC[0-∞])
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: DN AUC(0-∞)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: Percentage of AUC0-∞ Obtained by Extrapolation (AUC%Extrap)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: Half-Life (T1/2)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: Apparent Clearance (CL/F)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of 4-MP: Apparent Volume of Distribution During Terminal Phase (Vz/F)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: Cmax
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: DN Cmax
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: Tmax
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: AUC(0-t)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: DN AUC(0-t)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: AUC(0-∞)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: DN AUC(0-∞)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: AUC%Extrap
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: T1/2
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: CL/F
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Ethanol: Vz/F
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: Cmax
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: DN Cmax
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: Tmax
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: AUC(0-t)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: DN AUC(0-t)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: AUC(0-∞)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: DN AUC(0-∞)
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: AUC%Extrap
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
PK of Acetaldehyde: T1/2
Time frame: Days 1 and 2: prior to administration of 1st treatment (ethanol or study drug); 10, 20, and 30 min prior to administration of second treatment (study drug or ethanol); 40, 50, 60 min and 2, 3, 4, 5, 6, and 8 hr post administration of 1st treatment
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 Dec 2024.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 6377951Inoue K, Fukunaga M, Kiriyama T, Komura S. Accumulation of acetaldehyde in alcohol-sensitive Japanese: relation to ethanol and acetaldehyde oxidizing capacity. Alcohol Clin Exp Res. 1984 May-Jun;8(3):319-22. doi: 10.1111/j.1530-0277.1984.tb05519.x.
- Background: PubMed 4021229Inoue K, Kera Y, Kiriyama T, Komura S. Suppression of acetaldehyde accumulation by 4-methylpyrazole in alcohol-hypersensitive Japanese. Jpn J Pharmacol. 1985 May;38(1):43-8. doi: 10.1254/jjp.38.43.
- Background: PubMed 15204767Tardif R, Liu L, Raizenne M. Exhaled ethanol and acetaldehyde in human subjects exposed to low levels of ethanol. Inhal Toxicol. 2004 Apr;16(4):203-7. doi: 10.1080/08958370490277272.
- Background: PubMed 14652286Yokoyama T, Yokoyama A, Kato H, Tsujinaka T, Muto M, Omori T, Haneda T, Kumagai Y, Igaki H, Yokoyama M, Watanabe H, Yoshimizu H. Alcohol flushing, alcohol and aldehyde dehydrogenase genotypes, and risk for esophageal squamous cell carcinoma in Japanese men. Cancer Epidemiol Biomarkers Prev. 2003 Nov;12(11 Pt 1):1227-33.
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
MD study director
Amgen
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Antizol and Ethanol in people with Aldehyde Dehydrogenase-2 (ALDH2) Deficiency, run by Amgen at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 7 inclusion and 30 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 27 Dec 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 15 Sep 2017). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of Participants With Adverse Events (AEs), Serious AEs, and AEs Leading to Study Discontinuation (time frame: Study Day 0 through Study Visit Day 7). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00661141, which also lists 4 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Dec 2024.