Optimizing Treatment of Co-occurring Smoking and Unhealthy Alcohol Use Among PWH in Nairobi, Kenya

NCT ID: NCT06790342

Last Updated: 2025-12-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

PHASE3

Total Enrollment

300 participants

Study Classification

INTERVENTIONAL

Study Start Date

2026-06-01

Study Completion Date

2030-02-01

Brief Summary

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People with HIV (PWH) smoke tobacco cigarettes and drink alcohol at higher rates than the general population, both in the US and internationally, including low- and middle-income countries. Now that effective antiretroviral therapy is available throughout most of the world, PWH are surviving long enough to manifest the lethal consequences of both their smoking and drinking. In this project, the investigational team aims to advance the knowledge and understanding of treatment strategies (i.e. individual intensive counseling ± pharmacotherapy with cytisine) that target both tobacco and alcohol use among PWH in Kenya, a resource constrained environment, and to generate outcome data that may benefit co-users of tobacco and alcohol throughout the world.

Detailed Description

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This study was reviewed and approved for data analysis by the University of Chicago.

The research portion of this study was also submitted to and is pending approval from:

Board Name: AMREF ETHICAL AND SCIENTIFIC REVIEW COMMITTEE (ESRC) Board Affiliation: The AMREF ESRC is affiliated with AMREF Health Africa and accredited by National Commission for Science, Technology and Innovation (NACOSTI) since 200 Phone: +254 20 699 4000 Email: [email protected]

Address:

Langata Road PO Box 27691-00506 Nairobi, Kenya

Conditions

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HIV Tobacco Use Alcohol Use Disorder

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Investigators Outcome Assessors

Study Groups

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Experimental: Cystine (CYT) + Positively Smoke Free

Positively smoke free-- an 8 session tailored behavioral treatment for smoking cessation and alcohol reduction

Cystine--used for smoking cessation and alcohol reduction

Group Type EXPERIMENTAL

Cystine

Intervention Type DRUG

Used for smoking cessation and alcohol reduction

Positively Smoke Free

Intervention Type BEHAVIORAL

An 8 session tailored behavioral treatment for smoking cessation and alcohol reduction

Experimental: Cystine + Standard of Care

Cystine--used for smoking cessation and alcohol reduction

Standard of Care--brief advice to quit provided in a standardized format bupropion--used for smoking cessation

Group Type EXPERIMENTAL

Cystine

Intervention Type DRUG

Used for smoking cessation and alcohol reduction

Standard of Care

Intervention Type OTHER

Standardized brief advice to quit smoking (standard of care)

Experimental: Placebo + Positively Smoke Free

Positively smoke free-- an 8 session tailored behavioral treatment for smoking cessation and alcohol reduction

Placebo--matched to bupropion

Group Type EXPERIMENTAL

Positively Smoke Free

Intervention Type BEHAVIORAL

An 8 session tailored behavioral treatment for smoking cessation and alcohol reduction

Placebo

Intervention Type OTHER

Matched to cystine

Placebo Comparator: Placebo + Standard of Care.

Placebo--matched to bupropion

Standard of Care--brief advice to quit provided in a standardized format

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type OTHER

Matched to cystine

Standard of Care

Intervention Type OTHER

Standardized brief advice to quit smoking (standard of care)

Interventions

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Cystine

Used for smoking cessation and alcohol reduction

Intervention Type DRUG

Positively Smoke Free

An 8 session tailored behavioral treatment for smoking cessation and alcohol reduction

Intervention Type BEHAVIORAL

Placebo

Matched to cystine

Intervention Type OTHER

Standard of Care

Standardized brief advice to quit smoking (standard of care)

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

1. Confirmed chart diagnosis of HIV
2. At least 18 years or age
3. Currently self-reports smoking (has smoked a cigarette within the past 7 days) and has expired air Carbon Monoxide (CO) 6ppm. Expired air CO provides an accurate indirect measure of carboxyhemoglobin (COHb) level and is a standard biochemical method for assessing a smoker's level of intake.
4. Motivation to quit smoking within the next 6 months (score 6-8 on the Abrams and Biener Readiness to Quit Ladder)
5. Meets criteria for heavy drinking: National Institute on Alcohol Abuse and Alcoholism (NIAAA) guidelines suggest gender-based criteria for heavy drinking but note that lower thresholds may be needed for people with a medical condition. PWH show increased physiologic injury and decreased survival at lower levels of alcohol consumption than those without HIV. Thus, we will use the lower limit for alcohol misuse/heavy drinking from the NIAAA guidelines for all study candidates, i.e. drinking 4+ drinks on a given day or \>7 drinks/week over the past 30 days
6. Able to speak English (in Nairobi spoken English is near universal as English is an official language of Kenya)
7. Willingness to accept behavioral and/or pharmacologic tobacco and alcohol treatment
8. Willingness and ability to provide informed consent to participate.

Exclusion Criteria

1. Current receipt of any tobacco or alcohol use behavioral or pharmacologic treatment
2. Previous allergic reaction or hypersensitivity to cytosine (CYT) (unlikely since CYT is not available in Kenya)
3. History of severe alcohol withdrawal symptoms in the past 12 months, including seizure or hallucinations
4. Pregnant, nursing, or becoming pregnant during the study
5. Current use of any medication that would interfere with the protocol in the opinion of the Medically Accountable Physician
6. Meets criteria for possible dementia by scoring below 10 on the Hopkins HIV Dementia Scale
7. Unstable psychiatric illness
8. Known plans to re-locate or travel away from the study site for more than two consecutive months during the study period
9. Expected survival of less than 6 months.
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Cancer Institute (NCI)

NIH

Sponsor Role collaborator

University of Maryland

OTHER

Sponsor Role collaborator

University of Chicago

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Seth Himelhoch

Role: PRINCIPAL_INVESTIGATOR

University of Chicago

Locations

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Mathari National Teaching and Referral Hospital

Nairobi, , Kenya

Site Status

Riruta Health Centre

Nairobi, , Kenya

Site Status

Countries

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Kenya

Central Contacts

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Walter Mchembere

Role: CONTACT

+254 20 3908219

Emily Koech, MD

Role: CONTACT

+254 20 3908219

References

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Rigotti NA, Benowitz NL, Prochaska J, Leischow S, Nides M, Blumenstein B, Clarke A, Cain D, Jacobs C. Cytisinicline for Smoking Cessation: A Randomized Clinical Trial. JAMA. 2023 Jul 11;330(2):152-160. doi: 10.1001/jama.2023.10042.

Reference Type BACKGROUND
PMID: 37432430 (View on PubMed)

Himelhoch SS, Koech E, Omanya AA, Oduor P, Mchembere W, Masai TW, Bennett ME, Li L, Potts W, Ojoo S, Shuter J. Efficacy of Smoking Cessation Interventions among People with HIV in Kenya. NEJM Evid. 2024 Nov;3(11):EVIDoa2400090. doi: 10.1056/EVIDoa2400090. Epub 2024 Oct 22.

Reference Type BACKGROUND
PMID: 39437141 (View on PubMed)

Other Identifiers

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1R01CA288235-01A1

Identifier Type: NIH

Identifier Source: secondary_id

View Link

IRB24-1626

Identifier Type: -

Identifier Source: org_study_id

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