NCT07828275

Brief Summary

This R33 application proposes to adapt and test an evidence-based behavioral intervention to decrease polysubstance use (i.e., alcohol and tobacco/cannabis) during pregnancy and lactation and prevent adverse clinical outcomes, including fetal alcohol spectrum disorder (FASD) in South Africa (SA). SA has a long history of social and health disparities, resulting in the world's highest rate of FASD (111.1 per 1,000), where lifelong negative cognitive and physical effects result from prenatal alcohol exposure. FASD is completely preventable if women do not drink during pregnancy. Prenatal alcohol use frequently co-occurs with other substance use, especially tobacco and cannabis. The adverse effect on birth outcomes by alcohol and tobacco use together is worse than either substance alone. Recent evidence from animal models shows that prenatal exposure to both cannabinoids and alcohol potentiate the likelihood of alcohol-induced birth defects. Data from Cape Metropole, SA, showed that all women who reported prenatal alcohol use also tested positive for tobacco use, with 25% also reporting cannabis use. Alcohol use while breastfeeding also occurs at a relatively high rate in SA. Despite tremendous health benefits from breastfeeding, maternal alcohol use while breastfeeding significantly compromises infant development. Contingency management (CM) has been efficacious in reducing prenatal cocaine, alcohol, and tobacco use in the United States (U.S.). The Women's Health CoOp (WHC) is an evidence-based brief intervention addressing women-focused syndemic issues and resulting disparities associated with substance and alcohol use. These evidence-based interventions need to be combined and adapted for addressing maternal polysubstance use and associated health and behavioral issues during pregnancy and lactation in SA.

Trial Health

63
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
184

participants targeted

Target at P75+ for phase_2

Timeline
29mo left

Started Feb 2027

Geographic Reach
1 country

1 active site

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

September 11, 2026

Completed
7 days until next milestone

First Posted

Study publicly available on registry

September 18, 2026

Completed
5 months until next milestone

Study Start

First participant enrolled

February 1, 2027

Expected
2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 31, 2029

5 months until next milestone

Study Completion

Last participant's last visit for all outcomes

June 30, 2029

Last Updated

September 18, 2026

Status Verified

September 1, 2026

Enrollment Period

2 years

First QC Date

September 11, 2026

Last Update Submit

September 14, 2026

Conditions

Keywords

prenatal alcohol useprenatal tobacco useprenatal cannabis usealcohol use during lactationtobacco use during lactationcannabis use during lactation

Outcome Measures

Primary Outcomes (3)

  • Urinalysis results for alcohol use

    An alcohol metabolite (EtG) will be measured in urine samples. EtG can be detected in the urine up to 5 days after heavy drinking and up to 2 days after light drinking with ≥150 ng/mL for EtG as a cutoff value.

    From enrollment to the end of treatment at 3 months postpartum

  • Urinalysis results for tobacco use

    Biochemical verification of recent tobacco use in urine samples. A tobacco metabolite (cotinine) will be measured in urine samples. The metabolite can be detected up to 3-4 days after use with ≥ 80ng/mL as a cutoff.

    From enrollment to the end of treatment at 3 months postpartum

  • Urinalysis results for cannabis use

    Biochemical verification of recent cannabis use in urine samples. A cannabis metabolite (THC) will be measured in urine samples. The metabolite can be detected up to 28 days after heavy use with ≥50 ng/mL as a cutoff.

    From enrollment to the end of treatment at 3 months postpartum

Secondary Outcomes (7)

  • Birth weight

    Birth

  • Gestational age at birth

    Birth

  • Head circumference

    Birth

  • Apgar score

    Birth

  • NICU admission

    Birth to 3 months postpartum

  • +2 more secondary outcomes

Study Arms (2)

Usual Care

ACTIVE COMPARATOR

Participants will receive community referrals to treatment programs as needed and will be asked to meet research staff on a monthly basis at the clinic to provide a urine sample and fill out timeline follow-back. R200 will be provided for sample provision. Research staff will make referrals to treatment programs in the community as needed.

Behavioral: Usual Care

Intervention

EXPERIMENTAL

Participants will receive text-based support on health promotion and referral content based on educational components. Participants will be asked to meet research staff on a monthly basis at the clinic to provide a urine sample, fill out timeline follow back on self-reported alcohol and tobacco/cannabis use, and receive contingent incentives if abstinence is verified.

Behavioral: Intervention

Interventions

InterventionBEHAVIORAL

Participants will receive text-based support on health promotion and referral content based on educational components. Participants will be asked to meet research staff on a monthly basis at the clinic to provide a urine sample, fill out timeline follow back on self-reported alcohol and tobacco/cannabis use, and receive contingent incentives if abstinence is verified.

Intervention
Usual CareBEHAVIORAL

Participants will receive community referrals to treatment programs as needed and will be asked to meet research staff on a monthly basis at the clinic to provide a urine sample and fill out timeline follow-back. R200 will be provided for sample provision. Research staff will make referrals to treatment programs in the community as needed.

Usual Care

Eligibility Criteria

Age18 Years+
Sexfemale(Gender-based eligibility)
Gender Eligibility DetailsFemales who are currently pregnant
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • (1) be pregnant, (2) intend to breastfeed, (3) test positive for alcohol use by urinalysis (i.e., EtG), (4) test positive for tobacco or cannabis use by urinalysis (i.e., cotinine and THC), (5) have an independent access to a mobile phone, (6) plan to remain in the area during pregnancy and 3 months postpartum.

You may not qualify if:

  • Report serious medical problems threatening their current pregnancy or current suicidal thoughts or attempts in the past month.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Cape Town

Cape Town, South Africa

Location

MeSH Terms

Interventions

Methods

Intervention Hierarchy (Ancestors)

Investigative Techniques

Central Study Contacts

Yukiko Washio, PhD

CONTACT

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Research Assistant Professor

Study Record Dates

First Submitted

September 11, 2026

First Posted

September 18, 2026

Study Start (Estimated)

February 1, 2027

Primary Completion (Estimated)

January 31, 2029

Study Completion (Estimated)

June 30, 2029

Last Updated

September 18, 2026

Record last verified: 2026-09

Data Sharing

IPD Sharing
Will share

A limited data set in which names and other personal health identifiers are removed will be supplied to researchers on request. The data will be made available after the publication of the study results. Analytic files will be collected in Redcap and then prepared in SPSS, R, SAS, or STATA, with online codebooks giving the variable name, label, type, format, positions, consistency codes, and, if applicable, values and value labels. Requesting access to data will involve drafting an abstract, checking the feasibility relative to the available data, and then seeking the permission of the principal investigator and the team for review, if appropriate. The data sets will be ready for use and can be converted to other analytic tools.

Shared Documents
STUDY PROTOCOL, SAP, ICF, ANALYTIC CODE
Time Frame
After study outcomes are published for 3 years
Access Criteria
those with the permission of the principal investigator and the team investigators

Locations