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Clinical trialNCT03402230CompletedEarly phase 1Interventional

Broccoli Sprout/Broccoli Seed Extract Supplement in Decreasing Toxicity in Heavy Smokers

SponsorNational Cancer Institute (NCI)Enrollment49Cigarette Smoking-Related CarcinomaTobacco-Related Carcinoma
View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

This randomized early phase I trial studies how well broccoli sprout/broccoli seed extract supplement works in decreasing toxicity in heavy smokers. Broccoli sprout/broccoli seed extract supplement is a dietary supplement made from broccoli sprout and seed extract powder, and may break down some of the cancer causing substances in tobacco smoke and produce substances that may protect cells from tobacco smoke-induced damage in current smokers.
clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

2 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States
  • Banner University Medical Center - Tucson

    Tucson, Arizona, United States

  • University of Arizona Cancer Center - Prevention Research Clinic

    Tucson, Arizona, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

Broccoli sprout extract
Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
20 Feb 2018
Primary completion
10 Jan 2020
Completion
24 Jul 2022
Last update posted
28 Jun 2023
Registered enrollment
49
Registry id
NCT03402230
clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.