AzTrials
AzTrials

AlcoholismPhase 3TEMACANCT03634917

Investigation of the Efficacy of Acamprosate and Calcium in Comparison to Placebo as Validation of a Behavioural Test for Alcohol Dependence

A Phase 3 study testing Acamprosate Calcium and Calcium Carbonate in people with Alcoholism, run by Technische Universität Dresden at 1 site in Germany.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

Validation of a Test System to develop new medications for alcoholism (TEMA) The 'TEMA', a progressive-work alcohol self-administration paradigm, can be validated by reproducing the effect of Acamprosate and prove the effect of Calcium to reduce motivation to work for alcohol after 14 - 19 days of treatment during a… Read more about this study

Who is it for?
Ages 25 to 55 yearsHealthy volunteers can take part
Conditions the study is for
Alcoholism
What is being tested?
Acamprosate Calcium and Calcium Carbonate
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
82 participants
Where
1 siteGermany
Study dates
5 Aug 2020to 1 May 2024
Phase
Phase 3
Are there results?
None posted in the registry

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 25 to 55 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • male and female volunteers aged 25 to 55 years, who meet or met the diagnostic criteria of an at least mild alcohol use disorder (DSM-5), but do not want to cease alcohol consumption
  • willingness to stop alcohol and drug consumption for 15-20 days for the purpose of study participation
  • at least high risky alcohol drinkers (WHO) in the Timeline Follow-back Interview over the last 45 day with an average amount of alcohol of 60 g/day (men) or 40 g/day (women) with at least 4 drinking days per week
  • informed consent
  • ability to swallow a placebo capsule
  • not more than 6 consecutive alcohol abstinent days between screening and visit 2

Who cannot join

  • Current Substance dependence (illegal drugs) ICD-10 or DSM-IV
  • Intention to stop alcohol consumption immediately and permanently
  • Current or previous disease that could cause a clinically relevant hazard (e.g. pancreatitis, cirrhosis)
  • kidney stone disease
  • Current Treatment with psychotropic drugs or current psychiatric disorder in need of treatment
  • alcohol withdrawal symptoms (at Screening, visit 1 or visit 2) with CIWA-Ar-Score > 6 points or arterial blood pressure >160 mm Hg or diastolic blood pressure > 100 mm Hg or heart rate >105 bpm (when breath alcohol concentration 0 mg%)
Show all 22Show fewer
  • history of epileptic seizure or delirium
  • routine laboratory parameters, indicating relevant liver-, pancreas- or kidney injury, an acute infection, anemia or lack of vitamins (ASAT, ALAT, lipase > threefold of the standard at screening, Quick's value < 70%, creatinine > 120 µmol/l, eGFR < 30 mol/min/1.73 m², leucocytes > 13000/µl, haemoglobin < 7.5 mmol/l (men) or 6.5 mmol/l (women), MCV > 105 fl, calcium level at screening > 2.7 mmol/l
  • body weight > 120 kg (Screening)
  • Breath alcohol concentration at screening or visit 1 or visit 2 two times > 0 mg% or drug screening two times positive for opiate, cannabis, cocaine, amphetamine, benzodiazepine
  • history of hypersensitivity to alcohol or one of the used medicinal products, of their ingredients or medicinal products with similar chemical structures
  • history of inefficient treatment with Acamprosate
  • participation in another clinical trial within the last 4 weeks before inclusion
  • disorders, which will not allow the subject to assess the character and importance or possible consequences of the clinical trial
  • pregnant or breastfeeding women
  • women capable of bearing children, except women who fulfil following criteria:- post-menopausal (12 months natural amenorrhoea or 6 month amenorrhoea and Serum FSH >40 ml U/ml) - post operative (6 weeks after ovariectomy on both sides with or without hysterectomy) - regular and correct use of a contraceptive method with an error Quote of < 1 % per year (for example implants, depot injections, oral contraceptive, IUP). It has to be recognized that a combined oral contraception - in contrast to pure progesterone compounds - have a failure rate of < 1 %. Hormone IUDs with a Pearl Index of 1 % are safer than copper IUDs. - sexual abstinence - vasectomy of the Partner)
  • participant is not expected to comply with the protocol (for example lacking compliance)
  • less than 200 cumulative work trials for alcohol (in constant attention task) on 1st alcohol self-administration day
  • specific contraindications for Acamprosate or Calcium Carbonate (according prescribing information)
  • hypercalcemia, e.g. due to hyperparathyroidism, overdosage vitamin D, paraneoplastic
  • renal insufficiency (eGFR < 30ml/min/1.73m²), creatinine >120 µmol/l
  • intake of Vitamin D compounds or cardioactive glycosides

Trial locations and contacts

1 site in 1 country.

Germany1 site
  • Klinik und Poliklinik für Psychiatrie und Psychotherapie; Technische Universität Dresden

    Dresden, Saxony, 01307

Other trials in Germany

About this study

Official title: Investigation of the Efficacy of Acamprosate and Calcium in Comparison to Placebo as Validation of a Behavioural Test for Alcohol Dependence (TEMACA)

Validation of a Test System to develop new medications for alcoholism (TEMA)

The 'TEMA', a progressive-work alcohol self-administration paradigm, can be validated by reproducing the effect of Acamprosate and prove the effect of Calcium to reduce motivation to work for alcohol after 14 - 19 days of treatment during a period of 15 - 20 days of alcohol abstinence in a randomized, double-blind, placebo-controlled three-arm parallel-group design.

Read the detailed description

Objective of this study is to show that a laboratory alcohol self-administration method can predict the therapeutic potential of new compounds to reduce relapse in alcohol-dependent patients.

The 'TEMA' translates several animal behavioral paradigms of alcohol self-administration into corresponding human experiments.

84 at least high risky drinkers (WHO) with at least mild alcohol use disorder perform two alcohol self-administration experiments, one before and one after 14-19 days of randomized double-blinded treatment with Acamprosate, Calcium Carbonate or Placebo.

Each alcohol request requires prior work in a constant attention task according to a progressive schedule to earn the next alcohol infusion.

Secondary objectives refer to investigations, whether

  1. administration of Acamprosate or Calcium Carbonate in comparison to placebo leads to a change in perception of subjective alcohol effects
  2. effectiveness of Acamprosate or Calcium can be predicted by calcium parameters (baseline and changes during medication period)
  3. administration of Acamprosate or Calcium leads to a reduction in alcohol craving
  4. Frequency of alcohol consumption during the imposed abstinence period differs between treatment groups and influences primary outcome
  5. study participation modifies motivation to change drinking habits and utilization of addiction care services
  6. Acid sphingomyelinase (ASM) activities are applicable as biomarker and predictor of medication effects.
  7. safety issues occur due to study medication
Conditions
Alcoholism
Being tested
Acamprosate Calcium, Calcium Carbonate, Placebo, Placebo lead in
Keywords
Acamprosate, Calcium, alcohol self-administration
Medical subject headings
Alcoholism

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Acamprosate CalciumDrug

    Also called Campral

    1 capsule with 666 mg Acamprosate

  • Calcium CarbonateDrug

    Also called Calcium

    1 capsule with 1500 mg Calcium Carbonate

  • PlaceboDrug

    1 Capsule with Placebo (lactose monohydrate, micro crystalline cellulose, magnesium stearate)

  • Placebo lead inDrug

    1 Capsule with Placebo (lactose monohydrate, micro crystalline cellulose, magnesium stearate)

Study groups in NCT03634917
Study groupRoleWhat they receive
AcamprosateActive comparator1 capsule with Acamprosate calcium * oral use * 3 times / day (morning, noon, evening) * 666 mg per capsule * 14 - 19 days
Receives: Drug: Acamprosate Calcium; Drug: Placebo lead in
Calcium CarbonateActive comparator1 capsule with Calcium Carbonate * oral use * 3 times / day (morning, noon, evening) * 1500 mg Calcium Carbonate (= 600 mg Calcium 2+) * 14 - 19 days
Receives: Drug: Calcium Carbonate; Drug: Placebo lead in
PlaceboPlacebo comparator1 capsule placebo, * oral use * 3 times / day (morning, noon, evening) * 14 - 19 days
Receives: Drug: Placebo; Drug: Placebo lead in

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Difference between cumulative CAT trials for alcohol on 1st alcohol self-administration (ASA) day and 2nd ASA day

    Each alcohol request requires prior work according to a progressive schedule (i.e., runs of the constant attention task) to earn the next alcohol infusion.

    Primary outcome measure is the difference in the cumulative number of work sets for alcohol in the "constant attention task" (CAT) between first alcohol self-administration day (baseline, without medication, visit 2) and the second alcohol self-administration day (after 14-19 days medication, visit 5).

    Comparison between:

    1. Acamprosate and Placebo and
    2. Calcium Carbonate and Placebo

    Measured: 18 to 31 days between 1st and 2nd measurement

Secondary outcomes (16)
  1. Difference between "break points" for alcohol on 1st alcohol self-administration (ASA) day and 2nd ASA day

    The "break point" is the number of the last alcohol request before subjects stop to work for more alcohol.

    Measured: 18 to 31 day between 1st and 2nd measurement

  2. Difference between max. achieved blood alcohol concentrations (BAC) on 1st alcohol self-administration (ASA) day and 2nd ASA day

    Max. BAC during alcohol self-administration

    Measured: 18 to 31 day between 1st and 2nd measurement

  3. Difference between cumulative CAT trials for sodium chloride on 1st alcohol self-administration (ASA) day and 2nd ASA day.

    Sodium chloride is an alternative reinforcer on alcohol self-administration.

    Each Sodium chloride request requires prior work according to a progressive schedule (i.e., runs of the constant attention task) to earn the next sodium chloride infusion.

    Outcome measure is the difference in the cumulative number of work sets for sodium chloride (as an alternative reinforce) in the "constant attention task" (CAT) between first alcohol self-administration day (baseline, without medication, visit 2) and the second alcohol self-administration day (after 14-19 days medication, visit 5).

    Measured: 18 to 31 days between 1st and 2nd measurement

  4. Differences in 1st and 2nd half of self-administration periods between cumulative CAT trials for alcohol on 1st alcohol self-administration (ASA) day and 2nd ASA day of 1st and 2nd half of self-administration periods.

    Each alcohol request requires prior work according to a progressive schedule (i.e., runs of the constant attention task) to earn the next alcohol infusion.

    Outcome measure is the difference in the cumulative number of work sets for alcohol in the "constant attention task" (CAT) between first alcohol self-administration day (baseline, without medication, visit 2) and the second alcohol self-administration day (after 14-19 days medication, visit 5), considering the 1st and 2nd half of the self-administration period separately

    Measured: 18 to 31 days between 1st and 2nd measurement

  5. Differences in 1st and 2nd half of self-administration periods between "break points" for alcohol on 1st alcohol self-administration (ASA) day and 2nd ASA day.

    The "break point" is the number of the last alcohol request before subjects stop to work for more alcohol.

    Outcome measure is the the difference in break points for alcohol between first alcohol self-administration day (baseline, without medication, visit 2) and the second alcohol self-administration day (after 14-19 days medication, visit 5), considering the 1st and 2nd half of the self-administration period separately.

    Measured: 18 to 31 days between 1st and 2nd measurement

  6. Differences in 1st and 2nd half of self-administration periods between max. achieved blood alcohol concentrations (BAC) for alcohol on 1st alcohol self-administration (ASA) day and 2nd ASA day.

    Outcome measure is the the difference in max. achieved blood alcohol concentrations between first alcohol self-administration day (baseline, without medication, visit 2) and the second alcohol self-administration day (after 14-19 days medication, visit 5), considering the 1st and 2nd half of the self-administration period separately.

    Measured: 18 to 31 days between 1st and 2nd measurement

  7. Differences in 1st and 2nd half of self-administration periods between cumulative CAT trials for sodium chloride on 1st alcohol self-administration (ASA) day and 2nd ASA day.

    Sodium chloride is an alternative reinforcer on alcohol self-administration.

    Each Sodium chloride request requires prior work according to a progressive schedule (i.e., runs of the constant attention task) to earn the next sodium chloride infusion.

    Outcome measure is the difference in the cumulative number of work sets for sodium chloride in the "constant attention task" (CAT) between first alcohol self-administration day (baseline, without medication, visit 2) and the second alcohol self-administration day (after 14-19 days medication, visit 5), considering the 1st and 2nd half of the self-administration period separately

    Measured: 18 to 31 days between 1st and 2nd measurement

  8. Differences between subjective alcohol effects on 1st ASA day and 2nd ASA day

    alcohol-induced changes in stimulation, sedation, negative alcohol effects, craving, well-being, subjective feeling of drunkenness, subjective number of drinks and thirst measured with visual analogue scales ("Quizzer") before, 2 x during and after the alcohol infusion period.

    scale ranges: minimum = 0 to maximum = 100

    Higher values on a scale represent an increase of aforementioned subjective alcohol effects.

    Comparison between 1st ASA and 2nd ASA day

    Measured: 18 to 31 days between 1st and 2nd measurement

  9. Calcium parameters on 1st ASA and 2nd ASA day

    magnesium, phosphate, total calcium, albumin, parathormone, 25-hydroxyvitamin D measurement at baseline and difference between 2nd and 1st ASA

    Measured: 18 to 31 day between 1st and 2nd measurement

  10. Alcohol craving (OCDS) "Obsessive Compulsive Drinking Scale" (OCDS)

    Craving measured with "Obsessive Compulsive Drinking Scale" (OCDS) before 1st and 2nd ASA The OCDS is a 14-item self-rating instrument. It provides a total and two subscale (1: obsessive, 2. compulsive) scores, that measure aspects of alcohol craving.

    Measured: 18 to 31 days between 1st and 2nd measurement

  11. Violation of imposed alcohol abstinence

    in % of the days with alcohol consumption (measured with timeline follow-back, measured at visit 5)

    Measured: 15-20 days (abstinence period)

  12. Readiness to change

    "Readiness to change" questionnaire 12-item instrument for measuring the "stage of change" at screening, visit 6 and follow-up.

    The test has three four-item subscales to allocate patients to a stage of change: pre-contemplation (P), contemplation (C) or action (A), based on the stages of change model (by Prochaska and DiClementel)

    Answers are given on a scale ranging from 'strongly disagree' ("-2") through "0" to to 'strongly agree' (+2) . The range for each subscale is -8 to +8.

    Each subject is allocated to the stage on which it reached the highest score.

    Measured: 39 - 90 days between screening and visit 6, 6-8 weeks between visit 6 and follow-up

  13. Drinking habits

    Drinking habits measured with Timeline Follow-back Interview over 45 days before study start (measured at screening) and over the entire study duration (measured at visits 1, 3, 5, 6 and follow-up)

    1. % drinking days, b) average amount of alcohol per drinking day, c) % of binge days (alcohol consumption over 60 g /d (men) or 48 g / d (women)), d) average amount of alcohol per binge day,

    Measured: 39 - 90 days between screening and visit 6, 32 - 55 days between visit 1 and visit 6

  14. utilization of addiction care services

    does the subject frequent addiction care services at Screening, visit 6 and follow-up

    Measured: 39 - 90 days between screening and visit 6, 32 - 55 days between visit 1 and visit 6

  15. Acid sphingomyelinase (ASM) activities

    analysis in serum at screening at visits 2 and 5, before and after alcohol self-administration

    Measured: screening, 18 to 31 day between 1st and 2nd measurement, 2.5 hours from begin to end of ASA

  16. Acamprosate blood level

    measured on 2nd ASA day (visit 5)

    Measured: one-time measurement after 14 - 19 days of medication intake (at visit 5)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted17 Aug 2018
  2. Study start5 Aug 2020
  3. Primary completion30 Aug 2023
  4. Study completion1 May 2024

Resources

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 3
Primary purpose
Basic science
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Care provider, Investigator
Enrolment
82 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03634917
Sponsor's protocol ID
TUD-TEMACA-069
Acronym
TEMACA
Status last verified
May 2024
First submitted
25 Jul 2018
Last updated
29 May 2024
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Acamprosate Calcium and Calcium Carbonate in people with Alcoholism, run by Technische Universität Dresden at 1 site in Germany.

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 6 inclusion and 22 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 29 May 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 Germany. 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. Some participants in this study may receive a placebo. 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 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Difference between cumulative CAT trials for alcohol on 1st alcohol self-administration (ASA) day and 2nd ASA day (time frame: 18 to 31 days between 1st and 2nd measurement). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 29 May 2024.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in