Little Cigar Oxidants

NCT ID: NCT06310187

Last Updated: 2026-01-29

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

NA

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2026-02-28

Study Completion Date

2029-08-31

Brief Summary

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Determine the effects of little cigars on human exposure to tobacco smoke oxidants. In a balanced randomized cross-over study design in cigarette smokers, subjects will be assigned to 3 exposure groups. These include a high oxidant little cigar exposure condition, a low oxidant little cigar exposure condition, and their usual cigarette. Biological samples will be collected before and after product usage.

Detailed Description

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Exhaled breath condensate samples will be collected at pre-product usage, post-product usage, 30, and 60 minutes. Samples will be analyzed for levels of oxidant markers including 8-isoprostanes, 8-OHdG acrolein adducts and C-reactive protein.

Exhaled breath samples will be collected at pre-product usage and post-product usage. Samples will be analyzed for levels of oxidant markers in Volitive Organic Compound (VOC) profiles.

Blood samples will be collected at pre-product usage and post-product usage. Samples will be analyzed nicotine, 8-isoprostane and other oxidative makers of stress.

Buccal cell samples will be collected at pre-product usage and post-product usage. Samples will be analyzed for 8-OHdG adducts.

Salvia samples will be collected at pre-product usage and post-product usage. Samples will be analyzed for 8-OHdG adducts and metabolomic profiles.

Conditions

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Tobacco Use Oxidative Stress

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Williams Design for Cross over-trials with a 3-period 3-treatment cross-over design in 36 healthy daily cigarette smokers.
Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Group A

Subjects will be given the high oxidant little cigar for their first laboratory visit. They will then be given the low oxidant little cigar for the second visit followed by using their own cigarette at the final laboratory visit.

Group Type EXPERIMENTAL

High Oxidant Little Cigar

Intervention Type OTHER

Subjects will be given a high oxidant little cigar to use for outcome measure data collection in the lab before and after product usage.

Low Oxidant Little Cigar

Intervention Type OTHER

Subjects will be given a low oxidant little cigar to use for outcome measure data collection in the lab before and after product usage.

Usual Cigarette

Intervention Type OTHER

Subjects will use their own cigarette for outcome measure data collection in the lab before and after product usage.

Group B

Subjects will be given the low oxidant little cigar for their first laboratory visit. They will then use their own cigarette for the second visit followed by being given the high oxidant little cigar at the final laboratory visit.

Group Type EXPERIMENTAL

High Oxidant Little Cigar

Intervention Type OTHER

Subjects will be given a high oxidant little cigar to use for outcome measure data collection in the lab before and after product usage.

Low Oxidant Little Cigar

Intervention Type OTHER

Subjects will be given a low oxidant little cigar to use for outcome measure data collection in the lab before and after product usage.

Usual Cigarette

Intervention Type OTHER

Subjects will use their own cigarette for outcome measure data collection in the lab before and after product usage.

Group C

Subjects will use their own cigarette for their first laboratory visit. They will then be given the high oxidant little cigar for the second visit followed by being given the low oxidant little cigar at the final laboratory visit.

Group Type EXPERIMENTAL

High Oxidant Little Cigar

Intervention Type OTHER

Subjects will be given a high oxidant little cigar to use for outcome measure data collection in the lab before and after product usage.

Low Oxidant Little Cigar

Intervention Type OTHER

Subjects will be given a low oxidant little cigar to use for outcome measure data collection in the lab before and after product usage.

Usual Cigarette

Intervention Type OTHER

Subjects will use their own cigarette for outcome measure data collection in the lab before and after product usage.

Interventions

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High Oxidant Little Cigar

Subjects will be given a high oxidant little cigar to use for outcome measure data collection in the lab before and after product usage.

Intervention Type OTHER

Low Oxidant Little Cigar

Subjects will be given a low oxidant little cigar to use for outcome measure data collection in the lab before and after product usage.

Intervention Type OTHER

Usual Cigarette

Subjects will use their own cigarette for outcome measure data collection in the lab before and after product usage.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

1. Aged 21 - 65 years old
2. Daily cigarette smoker (\>= 1 cigarette per day);
3. Smoke regular, filtered cigarettes or machine rolled cigarettes with a filter
4. No current or past use of Little Cigars
5. All other forms of nicotine must be used \<6 days out of the past 30 days.
6. Able to read and write in English
7. No serious cigarette smoking quit attempt or use of any FDA-approved smoking cessation medication in the prior 30 days
8. No plan to quitting smoking in the next 3 months

Exclusion Criteria

1. Women who are pregnant and/or nursing or trying to become pregnant
2. Unstable or significant medical condition in the past 3 months (e.g., recent heart attack or other serious heart condition, stroke, severe angina)
3. Respiratory diseases (e.g., exacerbations of asthma or Chronic Obstructive Pulmonary Disease (COPD), require oxygen, require oral prednisone), kidney (e.g., dialysis) or liver disease (e.g., cirrhosis), severe immune system disorders (e.g., uncontrolled HIV/AIDS, multiple sclerosis symptoms) or any medical disorder/medication that may affect participant safety or biomarker data
4. Uncontrolled substance abuse or inpatient treatment for that condition in the past 6 months
5. Exhaled Carbon Monoxide (CO) measurement of \>= 17 parts per million
Minimum Eligible Age

21 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Institute on Drug Abuse (NIDA)

NIH

Sponsor Role collaborator

Milton S. Hershey Medical Center

OTHER

Sponsor Role lead

Responsible Party

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Joshua Muscat

Professor, Department of Public Health Sciences

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Joshua Muscat, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

Penn State Hershey College of Medicine

Central Contacts

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Joshua Muscat, Ph.D.

Role: CONTACT

7175318521

Kenneth Houser, MS

Role: CONTACT

7175315473

Other Identifiers

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U54DA058271-01

Identifier Type: NIH

Identifier Source: secondary_id

View Link

STUDY000023967

Identifier Type: -

Identifier Source: org_study_id

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