Project 4, Study 2: Extended Exposure to Low Nicotine Content Cigarettes in Pregnant Women

NCT ID: NCT04033237

Last Updated: 2025-10-30

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE1/PHASE2

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-08-21

Study Completion Date

2024-08-19

Brief Summary

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Study 2 will evaluate the effects of extended exposure to cigarettes with varying levels of nicotine in pregnant smokers who have less than an Associate's degree. This study will be limited to two conditions: usual brand vs. 0.4 mg nicotine/g tobacco. After a baseline period in which daily smoking rate and other baseline assessments are completed, participants will be randomly (by chance) assigned to either their usual brand or the very low nicotine content condition and followed for 12 weeks.

Detailed Description

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Some inclusion/exclusion criteria are purposely omitted at this time to preserve scientific integrity. They will be included after the trial is complete.

Conditions

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Tobacco Use Disorder

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Very low nicotine content cigarettes

Group Type EXPERIMENTAL

Very low nicotine content cigarettes

Intervention Type OTHER

Cigarettes containing 0.4 mg nicotine/g tobacco

Usual Brand

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Very low nicotine content cigarettes

Cigarettes containing 0.4 mg nicotine/g tobacco

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Female
* Ages 18-44 years
* Gestational age ≤ 25 weeks

Exclusion Criteria

* Male
* Under 18 years old
* Over 44 years old
* Gestational age \> 25 weeks
Minimum Eligible Age

18 Years

Maximum Eligible Age

44 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes

Sponsors

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National Institute on Drug Abuse (NIDA)

NIH

Sponsor Role collaborator

Food and Drug Administration (FDA)

FED

Sponsor Role collaborator

University of Kentucky

OTHER

Sponsor Role collaborator

University of Vermont

OTHER

Sponsor Role lead

Responsible Party

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Sarah Heil

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Sarah H. Heil

Role: PRINCIPAL_INVESTIGATOR

University of Vermont

Locations

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University of Kentucky

Lexington, Kentucky, United States

Site Status

University of Vermont

Burlington, Vermont, United States

Site Status

Countries

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United States

References

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Heil SH, Kock LS, Harfmann RF, Ashford KB, Barnett J, McCubbin A, DeSarno MJ, Higgins ST. Pilot randomized clinical trial examining use of very low nicotine content cigarettes during pregnancy in the United States. Prev Med. 2025 Jul 5:108351. doi: 10.1016/j.ypmed.2025.108351. Online ahead of print.

Reference Type DERIVED
PMID: 40623557 (View on PubMed)

Provided Documents

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Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Other Identifiers

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U54DA036114

Identifier Type: NIH

Identifier Source: secondary_id

View Link

CHRMS 16-390

Identifier Type: -

Identifier Source: org_study_id

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