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Clinical Applications of FAPI PET in Solid Tumors

17 augusti 2026 uppdaterad av: Ruijin Hospital

Clinical Applications of Novel FAPI PET in Diverse Solid Tumors

The study systematically evaluates the diagnostic performance of FAPI-RuiJ and FAPI-04 PET/CT or PET/MR in various solid tumor types, and is expected to provide a novel molecular imaging tool for early lesion detection, accurate staging, and recurrence surveillance in patients with solid tumors.

Studieöversikt

Status

Rekrytering

Betingelser

Intervention / Behandling

Detaljerad beskrivning

This prospective study is designed to evaluate and compare the PET/CT or PET/MR imaging characteristics of two fibroblast activation protein (FAP)-targeted tracers-the novel tracer FAPI-RuiJ and the reference tracer FAPI-04-across a diverse range of solid tumors. All enrolled patients will undergo paired PET imaging with both FAPI-RuiJ and FAPI-04. For each tracer, semi-quantitative uptake parameters (including SUVmax, SUVmean, SUVpeak, tumor-to-background ratio [TBR]）will be measured and compared. Biodistribution characteristics of FAPI-RuiJ in normal organs will be assessed to determine its in vivo metabolic profile. Using histopathology or imaging follow-up as the reference standard, the diagnostic performance of FAPI-RuiJ PET will be compared with that of FAPI-04 PET, with evaluation metrics including sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), accuracy, and area under the receiver operating characteristic curve (AUC). Correlation analyses will be performed between PET parameters and clinicopathological characteristics, including tumor markers, pathological subtype, and immunohistochemical markers.The study is expected to provide a novel molecular imaging tool to support early lesion detection, accurate staging, and recurrence surveillance in patients with solid tumors.

Studietyp

Interventionell

Inskrivning (Beräknad)

200

Fas

  • Inte tillämpbar

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studiekontakt

Studieorter

  • Kina
      • Shanghai, Kina
        • Rekrytering
        • Ruijin Hospital, Shanghai Jiao Tong University School of Medicine
        • Kontakt:

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

  • Vuxen
  • Äldre vuxen

Tar emot friska volontärer

Nej

Beskrivning

Inclusion Criteria:

  1. Age ≥ 18 years and ≤ 80 years, regardless of gender.
  2. Participants with suspected, confirmed, or suspected recurrent solid tumors.
  3. Participants who agree to participate in this clinical trial and provide written informed consent.
  4. Participants with good compliance, who commit to adhering to the study procedures and cooperate with the full study process.
  5. No plans for pregnancy within 6 months.

Exclusion Criteria:

  1. Patients with severe medical conditions that, in the investigator's opinion, make them unsuitable for participation in this clinical study, including but not limited to: severe cardiopulmonary insufficiency, severe bone marrow suppression, and severe hepatic or renal insufficiency.
  2. Patients with claustrophobia, severe psychiatric symptoms, or impaired consciousness that precludes cooperation with the examination procedures.
  3. Patients who have received any anti-tumor therapy during the interval between the two PET imaging sessions.
  4. Pregnant or breastfeeding women.
  5. Patients with poor compliance.

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Diagnostisk
  • Tilldelning: Randomiserad
  • Interventionsmodell: Crossover tilldelning
  • Maskning: Dubbel

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: Participants will undergo FAPI-RuiJ PET/CT or PET/MR, followed by FAPI-04 imaging on a separate day
Participants will undergo paired PET/CT or PET/MR imaging sequentially, with FAPI-RuiJ administered first and FAPI-04 on a separate day (interval: 1-7 days). For each tracer, a single intravenous injection will be given, followed by whole-body image acquisition at a standardized post-injection time. All images will be independently reviewed by two blinded nuclear medicine physicians. Histopathology or imaging follow-up serves as the reference standard.
Diagnostiskt test: FAPI-RuiJ
A novel FAP-targeted radiotracer for PET/CT or PET/MR imaging; administered intravenously.
Diagnostiskt test: FAPI-04
A FAP-targeted radiotracer for PET/CT or PET/MR imaging; administered intravenously.
Experimentell: Participants will undergo FAPI-04 PET/CT or PET/MR, followed by FAPI-RuiJ imaging on a separate day
Participants will undergo paired PET/CT or PET/MR imaging sequentially, with FAPI-04 administered first and FAPI-RuiJ on a separate day (interval: 1-7 days). For each tracer, a single intravenous injection will be given, followed by whole-body image acquisition at a standardized post-injection time. All images will be independently reviewed by two blinded nuclear medicine physicians. Histopathology or imaging follow-up serves as the reference standard.
Diagnostiskt test: FAPI-RuiJ
A novel FAP-targeted radiotracer for PET/CT or PET/MR imaging; administered intravenously.
Diagnostiskt test: FAPI-04
A FAP-targeted radiotracer for PET/CT or PET/MR imaging; administered intravenously.

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Diagnostic sensitivity, specificity, PPV, NPV, and accuracy of FAPI-RuiJ PET versus FAPI-04 PET
Tidsram: Through study completion, an average of 3 years
Overall and tumor type-specific diagnostic performance in solid tumors, using histopathology or imaging follow-up as the reference standard.
Through study completion, an average of 3 years
AUC of FAPI-RuiJ PET versus FAPI-04 PET
Tidsram: Through study completion, an average of 3 years
Overall and tumor type-specific AUC comparison between the two tracers in solid tumors, using histopathology or imaging follow-up as the reference standard.
Through study completion, an average of 3 years

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Comparison of SUVmax, SUVmean, and SUVpeak of FAPI-RuiJ PET versus FAPI-04 PET in solid tumor lesions
Tidsram: At the time of PET/CT scan
Semi-quantitative comparison of standardized uptake value (SUV) parameters (SUVmax, SUVmean, and SUVpeak) between the two tracers in solid tumor lesions.
At the time of PET/CT scan
Comparison of TBR of FAPI-RuiJ PET versus FAPI-04 PET in solid tumor lesions
Tidsram: At the time of PET/CT scan
Semi-quantitative comparison of TBR between the two tracers in solid tumor lesions. TBR is calculated as the ratio of tumor SUVmax to background SUVmean.
At the time of PET/CT scan
Biodistribution characteristics of FAPI-RuiJ PET in normal organs
Tidsram: At the time of PET/CT scan
Quantitative assessment of FAPI-RuiJ tracer biodistribution in major normal organs (including brain, submandibular gland, thyroid, lung, descending aorta, heart, liver, pancreas, stomach, spleen, kidney, bone, muscle, small intestine, gallbladder) measured by SUVmean and SUVmax on PET/CT images using ROI-based analysis.
At the time of PET/CT scan
Correlation between FAPI-RuiJ PET semi-quantitative parameters and clinicopathological characteristics in solid tumors
Tidsram: Through study completion, an average of 3 years
Correlation analysis between FAPI-RuiJ PET semi-quantitative uptake parameters (including SUVmax, SUVmean, SUVpeak, TBR and clinicopathological characteristics, including tumor markers (e.g., CEA, CA19-9, AFP, etc.), pathological subtype, and immunohistochemical markers (e.g., Ki-67, PD-L1, EGFR, etc.). Correlations will be assessed using Spearman's rank correlation coefficient (ρ), with statistical significance set at p < 0.05.
Through study completion, an average of 3 years

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

Ruijin Hospital

Utredare

  • Huvudutredare: Biao Li, Ruijin Hospital

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Faktisk)

2 juli 2026

Primärt slutförande (Beräknad)

31 mars 2029

Avslutad studie (Beräknad)

31 mars 2029

Studieregistreringsdatum

Först inskickad

26 juli 2026

Först inskickad som uppfyllde QC-kriterierna

17 augusti 2026

Första postat (Faktisk)

20 augusti 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

20 augusti 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

17 augusti 2026

Senast verifierad

1 april 2026

Mer information

Termer relaterade till denna studie

Andra studie-ID-nummer

  • 2026 CER 311

Läkemedels- och apparatinformation, studiedokument

Studerar en amerikansk FDA-reglerad läkemedelsprodukt

Nej

Studerar en amerikansk FDA-reglerad produktprodukt

Nej

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