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Multidimensional LDCT Imaging Endpoints for an Early-Phase Trial of Curcumin and Omega-3 Fatty Acids for Lung Cancer Chemoprevention: Results of a Randomized Pilot Trial

Kumar NB, Schabath M, Alexandrow M, Gray J, Tanventyanon T, Khalil F, Laborde J, Schell MJ et al.

2026

12 participants

Abstract

Former smokers in lung cancer screening remain at elevated risk for lung cancer despite smoking cessation. We and others have shown that curcumin exhibits anti-inflammatory and antiproliferative effects but is limited by poor bioavailability. However, since curcumin is lipophilic, co-administration with omega-3 fatty acids (ω-3 ω-3 ω-3 FA) represents a mechanistically rational strategy to enhance delivery and target complementary pathways, including STAT3 and NF-κB signaling for lung cancer chemoprevention.

Methods:: We conducted a randomized, single-blind, placebo-controlled pilot study evaluating curcumin combined with ω-3 FA in high-risk former and current smokers with CT-detected pulmonary nodules. Participants received intervention agents or placebo for 6 months. Primary endpoints included radiologic changes in nodule size, number, and density. Secondary endpoints included safety, adherence, bioavailability, and exploratory biomarker analyses. Correlation analyses of imaging-derived metrics were performed to assess relationships among LDCT parameters.

Results:: Nineteen participants were enrolled (intervention, n=12; placebo, n=7). No statistically significant between-group differences were observed in primary imaging endpoints. The intervention was well tolerated, with predominantly grade 1 adverse events. Exploratory analyses demonstrated consistent positive correlations among LDCT-derived measures, with clustering of size-based metrics (mean diameter, volume, sum of…

How strong is the evidence?

Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence. Reported size: 12 participants or records.

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