Addiction Potential of Very Low Nicotine Filtered Little Cigars

NCT ID: NCT06630728

Last Updated: 2025-10-16

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: PHASE4
• Total Enrollment: 50 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-02-13
• Study Completion Date: 2028-01-31

Brief Summary

The goal of this clinical trial is to learn how reducing the nicotine content in filtered little cigars can affect the the use of these cigars and lung health in current adult filtered little cigar users. The main question[s] it aims to answer are:

Are puffing behaviors, appeal/satisfaction, craving suppression, pharmacokinetic effects, and demand similar between the regular cigars smoked by participants, normal nicotine study cigars and very low nicotine study cigars? Are health effects and toxicant exposure similar between the regular cigars smoked by participants, normal nicotine study cigars and very low nicotine study cigars?

Participants will attend three study visits at OSU. Each visit would last up to 4 hours. During visits, they will

• fill several surveys
• provide blood samples
• perform breathing tests
• complete smoking sessions using either their own cigars or the study cigars.

Conditions

Smoking (Tobacco) Addiction

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: BASIC_SCIENCE
• Blinding Strategy: NONE

Study Groups

Smoking session

All participants will undergo three smoking sessions: one using their own usual brand cigar, one with a normal nicotine study cigar, and one with a reduced nicotine study cigar

Group Type: EXPERIMENTAL

Reduced Nicotine Content Cigars

Intervention Type: DRUG

Participants will smoke a very low nicotine content filtered little cigar containing 0.50mg nicotine per gram of tobacco

Normal nicotine content cigar

Intervention Type: DRUG

Participants will smoke a normal nicotine content filtered little cigar containing 5.17mg nicotine per gram of tobacco

Usual brand cigar

Intervention Type: DRUG

Participants will smoke their usual brand filtered little cigar

Interventions

Reduced Nicotine Content Cigars

Participants will smoke a very low nicotine content filtered little cigar containing 0.50mg nicotine per gram of tobacco

Intervention Type: DRUG

Normal nicotine content cigar

Participants will smoke a normal nicotine content filtered little cigar containing 5.17mg nicotine per gram of tobacco

Intervention Type: DRUG

Usual brand cigar

Participants will smoke their usual brand filtered little cigar

Intervention Type: DRUG

Other Intervention Names

VLNFLC; FLC; UB

Eligibility Criteria

Inclusion Criteria

• Smokers: 1) self-reported regular current filtered little cigars, cigarillos, little cigars, or small cigars use for the past 3 months; regular use will be defined as >=8 cigars smoked per month based on data showing median cigarillo use is 7.5 times per month and median FLC use is 14 times per month 59. We will attempt to bring in heavier users if feasible during recruitment; or 2) Cigarette smokers (>=8d/month for at least 3 months) with either (i) co-use of filtered little cigars, cigarillos, little cigars, or small cigars (at least once in their lifetime) or (ii) answering "yes" to the question "If all cigarettes were taken off the market, would you consider switching to filtered little cigars?"
• willing to abstain from all tobacco and nicotine for at least 12 hours prior to lab sessions
• Willing to bring their own, preferred brand little cigars/ small cigars/ cigarillos/ filtered little cigars to smoke in the lab on the first study visit
• capable of and willing to provide written informed consent
• read and speak in English.

Exclusion Criteria

• Self-reported significant current lung disease (e.g. asthma, COPD, cystic fibrosis, pulmonary fibrosis); exercise-induced asthma, seasonal allergies for which a patient takes inhalers are allowed
• History of diagnosis or treatment for lung cancer
• Self-reported serious or uncontrolled kidney disease, liver disease, metabolic disease (thyroid, diabetes)
• History of cardiac event or distress within the past 3 months
• Unstable or significant psychiatric conditions (past and stable conditions will be allowed)
• Substance use disorders besides nicotine addiction
• Regular use of other tobacco products besides cigarettes such as snuff, chewing tobacco, snus, e-cigarettes >10d per month
• Exclusive large or premium cigar users
• Use of blunts every time or most of the time
• Regular use of cannabis >10d per month
• Planning to quit in next 30 days or currently trying to quit or quit attempt in past 30 days
• Pregnant, delivery in past 12 weeks, breastfeeding, or planning to get pregnant
• Inability to perform tests or follow instructions during testing

• Minimum Eligible Age: 21 Years
• Maximum Eligible Age: 75 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Ohio State University Comprehensive Cancer Center

OTHER

Sponsor Role: lead

Responsible Party

Dharini Bhammar

Assistant Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Dharini M Bhammar, PhD, MBBS

Role: PRINCIPAL_INVESTIGATOR

Ohio State University

Locations

The Ohio State University

Columbus, Ohio, United States

Site Status: RECRUITING

Countries

United States

Central Contacts

Dharini M Bhammar, PhD, MBBS

Role: CONTACT

dharini.bhammar@osumc.edu

614-366-9467

The Ohio State University Comprehensive Cancer Center

Role: CONTACT

OSUCCCClinicaltrials@osumc.edu

800-293-5066

Facility Contacts

Dharini M Bhammar, PhD, MBBS

Role: primary

dharini.bhammar@osumc.edu

614-366-9467

Lisa Brenner

Role: backup

Lisa.Brenner@osumc.edu

614-293-7843

Other Identifiers

2024C0053

Identifier Type: -

Identifier Source: org_study_id