Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Smoking Reduction: later-stage trial registry
7 of 11 indexed Smoking Reduction trials are currently recruiting, with more weight in Phase 3-4.
Corpus placement: #1,577 of 28,707 conditions by registered trial count.
11 US clinical trials · 7 currently recruiting · #1,577 of 28,707 conditions by registered trial count
Smoking Reduction: 11 US clinical trials tracked, 7 recruiting.
Smoking Reduction is the subject of 11 registered US clinical trials on ClinicalTrials.gov, 7 of them currently open to new participants. 2 are in Phase 3-4 (later-stage) and 0 in Phase 1-2 (earlier-stage). The most active sponsor is University of California, San Francisco, running 2 of these trials.
Enrollment posture brief
Registry condition smoking-reduction
OPEN 7 | RECR 64% | LATE 2 | EARLY 0 | RANK #1577 | SPON 2
Volume-matched condition peers
Nearest open-share peer: Advanced Melanoma (64% recruiting · 22 trials)
Smoking Reduction lists 7 open slots (64% of 11 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →
Key findings
What ClinicalTrials.gov does not surface for Smoking Reduction on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.
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Smoking Reduction is recruiting above its size-band peers.
7 of 11 indexed trials (63.6%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
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One sponsor concentrates Smoking Reduction research.
University of California, San Francisco accounts for 2 of 11 trials (18.2%). 10 distinct sponsors appear on at least one study for this condition label.
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Typical Smoking Reduction enrolment sits around 83 participants.
Median target enrolment is 83 among the 11 trials that report a genuine target (sentinel values excluded). 6 of those (54.5%) plan for fewer than 100 participants.
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Smoking Reduction research is mostly interventional.
11 interventional and 0 observational studies make up this index (100% interventional). Study type is sponsor-reported on ClinicalTrials.gov.
Open and recent trials
11 total, page 1 of 1
The Impact of Menthol Flavoring on Switching in Adult Menthol Smokers
Nikki Nollen, PhD, MA
NCT05555069
Leveraging Community Pharmacists to Optimize Smoking Cessation Services for Rural Smokers in Appalachia
University of Virginia
NCT05660525
Switching to E-cigarettes in Smokers Not Interested in Quitting
University of Kansas Medical Center
NCT05703672
Modifying Progesterone and Estradiol Levels to Prevent Postpartum Cigarette Smoking Relapse and Reduce Secondhand Smoke Exposure in Infants and Children
University of Minnesota
NCT04783857
Trauma-Informed Care for Smoking Cessation for Pregnancy
University of California, San Francisco
NCT07129590
rTMS-concurrent Behavioral Priming for Reducing Smoking Cravings
West Virginia University
NCT06228235
A Study Evaluating the Use of an Indoor Air Quality Monitor to Promote a Smoke-free Home
Memorial Sloan Kettering Cancer Center
NCT06693700
Construal Level as a Novel Pathway for Affect Regulation and Cancer Control
University of Oregon
NCT04620915
Contingency Management for Smoking Cessation
University of California, San Francisco
NCT04982952
Feasibility and Efficacy of a Brief Mindfulness-Based Intervention SMOKING INTERVENTION VIA THE INTERNET
Wayne State University
NCT04572126
Tobacco Cessation in Public Housing
Johns Hopkins University
NCT04889638
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 3 | 1 |
| Phase 4 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on Smoking Reduction records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Smoking Reduction trials. A trial with sites in several states counts in each.
Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.
Related
What to do with this Smoking Reduction page
11 registered trials, 7 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 7 Smoking Reduction trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- University of California, San Francisco sponsors the most Smoking Reduction trials on record, review their full trial history before evaluating a specific study. See University of California, San Francisco's trials
- Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide
Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.
Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Smoking Reduction condition card totals 11 registered trials; most-linked intervention Fixed payments; top US site state Missouri. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.