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Protocol Details

Characterization of Phenotypic and Genotypic Regressors

This study is currently recruiting participants.

Summary | Eligibility | Citations | Contacts

Summary

Number

10-DA-N457

Sponsoring Institute

National Institute on Drug Abuse (NIDA)

Recruitment Detail

Type: Participants currently recruited/enrolled
Gender: Male & Female
Min Age: 18 Years
Max Age: N/A

Referral Letter Required

No

Population Exclusion(s)

Adults who are or may become unable to consent;
Pregnant Women;
Non-English Speaking;
Children

Keywords

Genotype;
Phenotype;
Characterization;
fMRI;
Natural History

Recruitment Keyword(s)

None

Condition(s)

Healthy Volunteers;
Substance Use Disorders

Investigational Drug(s)

None

Investigational Device(s)

None

Intervention(s)

None

Supporting Site

National Institute on Drug Abuse

The influence of genes on addictive and neuropsychiatric disorders is complex, especially given that multiple genes likely influence certain behaviors that are correlated with addiction. Researchers are interested in looking at the genetic information of individuals who are enrolled on National Institute for Drug Abuse studies to investigate specific genetic variants that may be related to substance abuse. Researchers will study the effects of genes on several aspects of thinking such as attention, memory, decision making, problem solving, learning, and emotional feelings, and investigate the ways in which genetic information affects addictive behaviors and substance abuse. In addition, researchers will study how genes may explain differences in imaging data in substance users.

Objectives:

- To collect genetic information for research on genetic aspects of addiction and substance abuse.

Eligibility:

- Adults age 18 or older

-- (1) healthy, non-drug-using nonsmokers,

-- (2) healthy smokers,

-- (3) healthy individuals dependent on other commonly abused drugs, and

-- (4) individuals with other psychiatric disorders.

- Participants must be enrolled in another National Institute on Drug Abuse, Intramural Research Program imaging protocol.

Design:

- This study involves one to two visits to National Institute on Drug Abuse, Intramural Research Program that may be separate from the participant's current research protocol study visits or on the same day as those visits.

- Participants will provide a blood sample and complete questionnaires about mood, memory, and learning.

- Participants may also be asked to do a few tasks, such as playing computer games involving coin tosses and money management, or responding to questions on a computer screen.

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Eligibility

INCLUSION CRITERIA: Main Study

All participants must be:

-under evaluation for another NIDA-IRP study or the NIDA CTN pilot portion of this study. Justification: data acquired under other studies will be compared to data collected in this protocol.

->= 18 years of age. Justification: Some NIDA-IRP studies have included teens, aged 13 - 17, but no current studies include them so we will only include adults in this study for now.

EXCLUSION CRITERIA: Main Study.

-History of neurological illnesses that per the study clinicians would be significant enough to impair ability to tolerate the procedure or alter neuronal activity, including but not limited to CVA, CNS tumor, head trauma with significant sequelae, Multiple Sclerosis or other demyelinating diseases, epilepsy, movement disorders, or migraine in treatment. Participants may also be asked about any lingering neurological and psychiatric symptoms that may be a result of COVID-19 infection. The Medical Advisory Investigator (MAI) will assess the severity in relation to the potential impact on data. Assessment tool: History and physical (H&P). Rationale: Neurological illnesses may impair ability to tolerate the procedures and alter neuronal activity, adding noise to the data.

-Cognitive impairment (unless this population of subjects is included in another IRP protocol for which the subject is also under consideration). Assessment tool: self-report during H&P of special education classes, history of specific learning disability or mental retardation. A validated IQ test such as the Shipley-2 may also be administered. Rationale: Cognitive impairment may impair ability to tolerate the procedures and alter neuronal activity, adding noise to the data.

-Current major mood, anxiety or psychotic disorder (unless this population of subjects is included in another IRP protocol for which the subject is also under consideration). Assessment tool: self-report, H&P, a structured or semi-structured psychiatric interview such as the computerized SCID with follow up clinical interview (or full interviewer-administered). Rationale: Current major mood or psychotic disorders may impair ability to tolerate the procedures and alter neuronal activity, adding noise to the data.

-Pregnancy. Assessment tool: Urine pregnancy test. Rationale: fMRI is not accepted as a safe procedure purely for research purposes during pregnancy.

-HIV -positive individuals. Assessment tool: oral HIV test with serum confirmation of positive results. Rationale: potential liver/metabolic/vascular disease can interfere with the physiological transduction mechanisms for fMRI (i.e. making the measurement unreliable).

-Unable to undergo MRI scanning due to possible pregnancy, metallic devices in the body, claustrophobia or body morphometry.

-Currently using respiratory, cardiovascular or anticonvulsant medications that may interfere with the BOLD MRI signal.

-Non-English speaking. Assessment tool(s): self-report. Rationale: To include non-English speakers, we would have to translate the consent and other study documents and hire and train bilingual staff, which would require resources that we do not have and could not justify given the small sample size for each experiment. Additionally, the data integrity of some of the cognitive tasks and standardized questionnaires used in this study would be compromised as they have only been validated in English. Most importantly, ongoing communication regarding safety procedures is necessary when participants are undergoing study procedures. The inability to effectively communicate safety procedures in a language other than English could compromise the safety of non-English speaking participants.

-Other health conditions that would impact safety of participation or scientific integrity of data collection.

Inclusion criteria: NIDA CTN Pilot Study

All participants must:

1. Either have a current DSM-5 diagnosis for at least one of the following substance use disorders: nicotine, cocaine, marijuana, opiate; or 2) no current DSM-5 substance use disorder (control participants). Justification: These criteria are consistent with the scope of this study to pilot this battery of tests for future use in similar populations enrolled in the NIDA CTN studies.

2. Be greater than or equal to 18 years of age. Justification: The NIDA CTN will use this battery in adults.

Exclusion criteria: NIDA CTN Pilot Study

1. A DSM-5 major psychiatric diagnoses unrelated to a substance use disorder including but not limited to bipolar disorder and schizophrenia. Diagnoses secondary to substance use disorder will be allowable providing the participant s symptoms do not interfere with the ability to complete assessments. Assessment tool: self-report, H&P, structured or semi-structured psychiatric interview.

Rationale: Current major mood or psychotic disorders may impair ability to complete the assessments and would add unnecessary noise to the data.

2. Cognitive impairment. Assessment tool: self-report during H&P of special education classes, history of specific learning disability or mental retardation. A validated IQ test such as the Shipley-2 may also be administered. Rationale: Cognitive impairment may impair ability to complete the assessments and would add unnecessary noise to the data.

3. Non-English speaking. Assessment tool(s): self-report. Rationale: To include non-English speakers, we would have to translate the consent and other study documents and hire and train bilingual staff, which would require resources that we do not have and could not justify given the small sample size for each experiment. Additionally, the data integrity of some of the cognitive tasks and standardized questionnaires used in this study would be compromised as they have only been validated in English. Most importantly, ongoing communication regarding safety procedures is necessary when participants are undergoing study procedures. The inability to effectively communicate safety procedures in a language other than English could compromise the safety of non-English speaking participants.


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Citations:

Not Provided

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Contacts:

Principal Investigator

Referral Contact

For more information:

Betty Jo Salmeron, M.D.
National Institute on Drug Abuse (NIDA)
NIH BIOMEDICAL RESEARCH CENTER BG RM 07A717
251 BAYVIEW BLVD.
BALTIMORE MD 21224
(667) 312-5266
bsalmeron@intra.nida.nih.gov

NIDA IRP Screening Team
National Institute on Drug Abuse (NIDA)

(800) 535-8254
researchstudies@nida.nih.gov

NIDA IRP Screening Team

(800) 535-8254
researchstudies@nida.nih.gov

Clinical Trials Number:

NCT01148381

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