Alcohol Addiction: A Systems-oriented Approach (eMedAlcohol)

July 30, 2019 updated by: Andreas Heinz, Charite University, Berlin, Germany

Alcohol Addiction: A Systems-oriented Approach; Functional Validation II: Neuroimaging x Genetics

The goal of the multicenter subproject (SP) 10 of the eMED Alcohol Addiction Consortium - A Systems-Oriented Approach is to study neuroimaging x genetics predictions in an existing sample (NGFNplus) of tightly endophenotyped and genome-wide genotyped alcohol dependent subjects (N=240) and controls (N=240); (ii) to translate the results of neuroimaging and genetic analyses from an adolescent risk sample (IMAGEN) to adult disease (NGFNplus sample) by examining related MRI-paradigms tagging the same functional brain systems in both samples (e.g. reward system, inhibitory control system, emotion processing, working memory); (iii) to conduct a follow-up neuroimaging study on the NGFNplus sample validating the neurobehavioral risk profiles predictive for juvenile harmful alcohol use in adult patients with alcohol addiction, (iv) to expand the NGFNplus sample by including a new set of healthy subjects with high genetic risk (1st degree relatives of patients with alcohol addiction). The investigators will do so by using elaborate imaging genetic methods that are already available and successfully used in other multicenter studies by the investigator's research group (e.g. univariate analyses, functional and effective connectivity analyses, polygenetic scores, network topology) as well as by using complex computational algorithms and mathematical models, in particular advanced machine learning methods, developed in SP 6. The investigator's approach aims in the long to predict and characterize longitudinal outcomes in patients with alcohol addiction (5 years following our index session) and to complement the NGFN-sample with an add-on study with 1st degree relatives that will allow the investigators to test the generalizability of the identified predictive risk profiles for early risk identification.

Study Overview

Status

Completed

Conditions

Detailed Description

The overall research goal of this project is (i) to study neuroimaging x genetics predictions in an existing sample (NGFNplus) of tightly endophenotyped and genome-wide genotyped alcohol dependent subjects (N=240) and controls (N=240); (ii) to translate the results of neuroimaging x genetic analyses from an adolescent risk sample (IMAGEN) to adult disease (NGFNplus sample) by examining related paradigms tagging the same functional systems in both samples; (iii) to conduct a follow-up neuroimaging study on the NGFNplus sample validating the neurobehavioral risk profiles predictive for harmful alcohol use in adolescents in adult patients with alcohol addiction (iv) to expand the NGFNplus sample by including a new set of healthy subjects with high genetic risk (1st degree relatives of patients with alcohol addiction). The investigators will do so by using imaging genetic methods that are already available and used in other multicenter studies by the investigator's research group (e.g. univariate analyses, functional and effective connectivity analyses, polygenetic scores, network topology) as well as by using computational algorithms and mathematical models, in particular advanced machine learning methods, developed in other sub projects (SPs) of the consortium in particular of SP4 and SP6. The investigator's approach will enable the researchers to characterize outcome longitudinal in patients with alcohol addiction (5 years following our index session) and to complement the NGFN-sample with an add-on study with 1st degree relatives that will allow the investigators to test the generalizability of the identified predictive risk profiles for early risk identification.

Study Type

Observational

Enrollment (Actual)

159

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Germany
      • Berlin, Germany, 10117
        • Charité - Universitätsmedizin Berlin

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

primary care clinic and community sample

Description

Inclusion Criteria:

  • written informed consent
  • right handedness
  • no psychiatric disorders according to the International Classification of Diseases, Version 10 (ICD-10) (in patients: other than nicotine and alcohol dependence)
  • no use of psychotropic substances during previous 3 months

Exclusion Criteria:

  • severe illnesses (e.g. neurological diseases)
  • MR-contraindications (e.g. pacemaker, metal or electronic implants, metal splinters)
  • no psychiatric axis I-disorders according to the International Classification of Diseases, Version 10 (ICD-10) (in patients: other than nicotine and alcohol dependence)
  • no use of psychotropic substances during previous 3 months
  • insufficient language knowledge
  • claustrophobia
  • pregnancy in women

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Cross-Sectional

Cohorts and Interventions

Group / Cohort
alcohol-dependent patients
first-degree relatives
Parents, children, siblings of alcohol-dependent patients
healthy control subjects

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Functional brain imaging assessed using a Siemens Magnetom TimTrio, 3 Tesla
Time Frame: 3 year
The primary outcome measure "Blood Oxygenation Level-Dependent (BOLD) response" will be assessed as a marker of neural activation via functional brain imaging (fMRI) during the processing of emotional, monetary and alcohol-associated cues as well as cognitive demand and at rest. A Siemens Magnetom TimTrio, 3 Tesla will be used.
3 year
Structural brain imaging assessed using a Siemens Magnetom TimTrio, 3 Tesla
Time Frame: 3 year
The second primary outcome measure "brain tissue (Grey Matter, White Matter, Cerebrospinal fluid)" will be assessed and quantified via structural brain imaging using magnet resonance tomography as well as defusion-tensor imaging (MRI, DTI). A Siemens Magnetom TimTrio, 3 Tesla will be used.
3 year

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Assessment of genetic candidate markers and epigenetic markers of alcohol use disorders
Time Frame: 3 years
Secondary outcome measures will be genotype specification of candidate SNPs (e.g. BDNF, GATA4, OPRM1, D2/D1) derived from blood samples and according DNA/RNA array genotyping. Project aim is to conduct Genom-Wide Association Studies (GWAS) to investigate genetic factors that may predispose to or protect against alcohol use disorder. Further epigenetic methylation factors (i.e. homocysteine serum level) will be investigated to differentiate between healthy controls, alcohol-dependent patients and individuals at risk (first grade relatives).
3 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Charite University, Berlin, Germany

Collaborators

Central Institute of Mental Health, Mannheim

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 17, 2016

Primary Completion (Actual)

May 27, 2019

Study Completion (Actual)

May 27, 2019

Study Registration Dates

First Submitted

February 22, 2016

First Submitted That Met QC Criteria

September 19, 2016

First Posted (Estimate)

September 21, 2016

Study Record Updates

Last Update Posted (Actual)

July 31, 2019

Last Update Submitted That Met QC Criteria

July 30, 2019

Last Verified

July 1, 2019

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 01ZX1311E

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Yes

IPD Plan Description

Data will be shared within the study consortium "SysMedAlcoholism".

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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