Clinical trial · Interventional
Low-glucose/High-fat Intake Dietary Regimen as a Tool for Empowering Diagnostic Accuracy of 2-[18F]FDG PET/CT in Lepidic-predominant Growth Lung Adenocarcinoma
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
This study evaluates whether a 7-day ketogenic dietary regimen before 2-\[18F\]FDG PET/CT can improve the diagnostic accuracy of imaging in adults with suspected or histologically confirmed lepidic-predominant lung adenocarcinoma (LPA). LPA frequently shows low glucose metabolism and may yield false-negative FDG PET/CT results. Approximately 30 participants will undergo a tailored ketogenic diet for 7 days before PET/CT. Imaging results will be compared with histopathology and additionally assessed against literature-reported diagnostic performance and a matched retrospective institutional cohort.
Conditions
Conditions (2)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Lepidic-Predominant Lung Adenocarcinoma | Lepidic Adenocarcinoma | ALIAS | 0.90 |
| Lung Adenocarcinoma | Lung Adenocarcinoma | ONTOLOGY_EXACT | 0.98 |
Interventions
Interventions (2)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| 2-[18F]FDG PET/CT | Diagnostic Test | — | UNRESOLVED |
| Ketogenic diet | Behavioral | — | UNRESOLVED |
Design
Arms and outcomes
Arms (1)
- type
- EXPERIMENTAL
- label
- Ketogenic Diet Before FDG PET/CT
- description
- Participants will receive an individualized ketogenic diet for 7 days before undergoing 2-\[18F\]FDG PET/CT. The study includes an initial dietary visit, a second dietary evaluation on the day of imaging, laboratory and urine testing, and PET/CT image acquisition.
- interventionNames
- Behavioral: Ketogenic diet
- Diagnostic Test: 2-[18F]FDG PET/CT
Primary outcomes (1)
- measure
- Diagnostic performance of 2-[18F]FDG PET/CT after a 7-day ketogenic diet
- timeFrame
- At day 0 after completion of the 7-day ketogenic diet and FDG PET/CT; final diagnostic performance analysis will be performed after histopathologic reference data are available for the enrolled cohort, up to 12 months.
- description
- Sensitivity, specificity, accuracy, positive predictive value, and negative predictive value of visual and semiquantitative 2-\[18F\]FDG PET/CT for identification of LPA after a 7-day ketogenic diet. Histopathological diagnosis will be used as the reference standard. Visual assessment will classify scans as positive when target nodule uptake is equal to or greater than mediastinal blood pool background; semiquantitative assessment will include SUVmax-based evaluation.
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: * Written informed consent. * Age 18 years or older. * CT evidence of a lung nodule suspicious for LPA or lung biopsy positive for LPA. * Target nodule diameter at least 10 mm. * ECOG performance status 0 to 2. * Willingness and ability to adhere to a controlled ketogenic diet for 7 days. * Ability to comply with study procedures and visit schedule. Exclusion Criteria: * Not suitable for prolonged imaging procedures. * Renal failure. * Type 1 diabetes mellitus. * Pancreatitis. * Severe dyslipidemia. * Other malignancies that are progressing or required active treatment within the previous 3 years. * Serious or unstable medical, psychiatric, or substance use disorders that could interfere with study participation. * Pregnancy or breastfeeding. * Refusal to participate
References
Publications (0)
Data not yet available