Federated Learning in Renal Tumor Model
Research on the Application of Federated Learning in the Construction of Deep Learning Models for Renal Tumor Imaging
This is a multicenter, retrospective and prospective diagnostic clinical trial evaluating the effectiveness and safety of CascadeDiagnose Renal Tumor CT, an AI-assisted detection system for renal tumors based on contrast-enhanced multiphase CT imaging. The system employs a cascaded deep learning architecture to perform fully automated analysis of multiphase CT images, covering image quality review, lesion detection and segmentation, benign-malignant differentiation, and risk stratification, with traceable evidence chains and interpretable outputs. The study is conducted across six tertiary hospitals in Guangxi, China, utilizing a distributed "data stays on-site, computation moves across centers" federated learning network, which ensures that original patient data remain within each hospital while encrypted intermediate features are shared for cross-center collaborative analysis. A total of at least 3000 patients with renal tumors will be enrolled (approximately 2600 in the retrospective phase and 400 in the prospective phase). The primary effectiveness outcomes include area under the receiver operating characteristic curve (AUC), sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV). The primary safety outcomes include false negative rate, false positive rate, and adverse events. The study also incorporates a multi-reader, multi-case (MRMC) design to compare the diagnostic performance of the AI system with radiologists of varying seniority, and to evaluate the system's utility in assisting junior radiologists. The findings of this study are expected to provide high-quality clinical evidence for the regulatory approval of this AI-assisted diagnostic system as a Class III medical device.
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Studientyp
Studientyp
Einschreibung (Geschätzt)
Einschreibung
Kontakte und Standorte
Studienkontakt
Studienkontakt
- Name: Hai-qi Liang, MD
- Telefonnummer: 86+18176618137
- E-Mail: liahiki@163.com
Studieren Sie die Kontaktsicherung
- Name: Nai-kai Liao, MD
- Telefonnummer: 86+18776891703
- E-Mail: 2546419718@qq.com
Studienorte
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Guangxi
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Guigang, Guangxi, China, 537100
- Guigang People's Hospital
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Kontakt:
- Jiale Feng, MD
- Telefonnummer: 86+17695684196
- E-Mail: 15498419548@qq.com
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Guilin, Guangxi, China, 541002
- Guilin People's Hospital
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Kontakt:
- Ke Qin, MD
- Telefonnummer: 86+15954268457
- E-Mail: QINKE541002@163.com
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Liuzhou, Guangxi, China, 545006
- Liuzhou People's Hospital
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Kontakt:
- Jianwen Yang, MD
- Telefonnummer: 86+13675215625
- E-Mail: JWyang235@163.com
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Nanning, Guangxi, China, 530021
- The First Affiliated Hospital of Guangxi Medical University
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Kontakt:
- Ji-wen Cheng, PhD
- Telefonnummer: 86+18776891703
- E-Mail: chengjiwen@stu.gxmu.edu.cn
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Kontakt:
- Haiqi Liang, MD
- Telefonnummer: 86+18176618137
- E-Mail: liahiki@163.com
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Unterermittler:
- Shenghua Deng, MD
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Nanning, Guangxi, China, 530021
- Nanning Second People's Hospital
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Kontakt:
- Yang Xie, MD
- Telefonnummer: 86+18346826751
- E-Mail: XieYNan@163.com
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Wuzhou, Guangxi, China, 543002
- Wuzhou Red Cross Hospital
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Kontakt:
- Deyan Ou, MD
- Telefonnummer: 86+18675651254
- E-Mail: OudYan1254@163.com
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Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Probenahmeverfahren
Studienpopulation
The study population consists of approximately 3,000 patients with pathologically confirmed renal tumors (benign or malignant) who underwent contrast-enhanced CT at ten Guangxi hospitals between January 2019 and June 2026. Cases are consecutively enrolled using a unified time window and strict inclusion/exclusion criteria. Eligible patients must have complete pre-operative contrast-enhanced CT, good image quality, and traceable clinical-pathological data. Exclusions include non-contrast CT only, severe artifacts, prior nephrectomy (except recurrence/residual), and incomplete data. Enrollment targets are 600 cases at the lead site and 300 at each of the nine participating centers.
Beschreibung
Inclusion Criteria:
- Patients pathologically confirmed as having renal tumors (either benign or malignant) by surgery or biopsy;
- Underwent contrastenhanced renal CT before surgery or treatment;
- CT images are of good quality and clearly depict the renal lesion contour;
- Complete and traceable clinical and pathological data.
Exclusion Criteria:
- Patients who did not undergo contrastenhanced CT before surgery, or only had noncontrast CT;
- CT images with significant motion artifacts, metal artifacts, or excessive noise that impair lesion assessment;
- Lesions too small (maximum diameter <1 mm) or not identifiable on imaging;
- Patients who previously underwent partial or radical nephrectomy for renal tumors (except for recurrent/residual lesions);
- Incomplete clinical data or pathological results.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Beobachtungsmodelle: CASE_CONTROL
- Zeitperspektiven: OTHER
Anzahl der Gruppen / Kohorten
Kohorten und Interventionen
Gruppe / KohorteGruppe / Kohorte |
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Malignant renal tumor
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Benign renal tumor
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Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Dice Similarity Coefficient for Renal Tumor Segmentation
Zeitfenster: The primary outcome will be measured in October 2027, upon completion of model training, final parameter aggregation, and ensemble model establishment, using the test set from the multi-center retrospective cohort.
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The primary outcome measure is the Dice Similarity Coefficient for renal tumor segmentation on contrast-enhanced CT, comparing the federated learning model against a centralized training model with a non-inferiority margin of Δ = -0.05. This outcome will be assessed at the end of the model training phase using an independent multi-center test set. |
The primary outcome will be measured in October 2027, upon completion of model training, final parameter aggregation, and ensemble model establishment, using the test set from the multi-center retrospective cohort.
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Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Classification Performance Metrics and Heterogeneity Impact Assessment
Zeitfenster: Assessed at the completion of the model training phase, approximately 18 months after study initiation, following final aggregation and ensemble construction, using the independent multi-center test set, with center-specific and subtype-specific analyses
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The secondary outcomes are: (1) classification performance metrics-AUC, accuracy, sensitivity, and specificity-for benign versus malignant renal tumor discrimination, with pathological diagnosis as the reference; and (2) the impact of data heterogeneity on model performance, assessed by comparing Dice coefficients and AUC values across centers and pathological subtypes. All secondary outcomes will be evaluated at the completion of the model training phase, approximately 18 months after study initiation, after the final federated aggregation and ensemble model construction, using the independent multi-center test set, with center-specific and subtype-specific analyses performed thereafter. |
Assessed at the completion of the model training phase, approximately 18 months after study initiation, following final aggregation and ensemble construction, using the independent multi-center test set, with center-specific and subtype-specific analyses
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Mitarbeiter und Ermittler
Sponsor
Sponsor
Ermittler
Ermittler
- Studienleiter: Min Qin, MD, First Affiliated Hospital of Guangxi Medical University
Publikationen und hilfreiche Links
Allgemeine Veröffentlichungen
- Sung H, Ferlay J, Siegel RL, Laversanne M, Soerjomataram I, Jemal A, Bray F. Global Cancer Statistics 2020: GLOBOCAN Estimates of Incidence and Mortality Worldwide for 36 Cancers in 185 Countries. CA Cancer J Clin. 2021 May;71(3):209-249. doi: 10.3322/caac.21660. Epub 2021 Feb 4.
- Bex A, Ghanem YA, Albiges L, Bonn S, Campi R, Capitanio U, Dabestani S, Hora M, Klatte T, Kuusk T, Lund L, Marconi L, Palumbo C, Pignot G, Powles T, Schouten N, Tran M, Volpe A, Bedke J. European Association of Urology Guidelines on Renal Cell Carcinoma: The 2025 Update. Eur Urol. 2025 Jun;87(6):683-696. doi: 10.1016/j.eururo.2025.02.020. Epub 2025 Mar 20.
- Xi IL, Zhao Y, Wang R, Chang M, Purkayastha S, Chang K, Huang RY, Silva AC, Vallieres M, Habibollahi P, Fan Y, Zou B, Gade TP, Zhang PJ, Soulen MC, Zhang Z, Bai HX, Stavropoulos SW. Deep Learning to Distinguish Benign from Malignant Renal Lesions Based on Routine MR Imaging. Clin Cancer Res. 2020 Apr 15;26(8):1944-1952. doi: 10.1158/1078-0432.CCR-19-0374. Epub 2020 Jan 14.
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Geschätzt)
Studienbeginn
Primärer Abschluss (Geschätzt)
Primärer Abschluss
Studienabschluss (Geschätzt)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Urogenitale Erkrankungen
- Urogenitale Neoplasmen
- Neubildungen nach Standort
- Neubildungen
- Männliche Urogenitalerkrankungen
- Nierenerkrankungen
- Urologische Erkrankungen
- Weibliche Urogenitalerkrankungen
- Weibliche Urogenitalerkrankungen und Schwangerschaftskomplikationen
- Neubildungen nach histologischem Typ
- Neubildungen, Drüsen und Epithelien
- Adenokarzinom
- Urologische Neubildungen
- Karzinom
- Nierentumoren
- Karzinom, Nierenzelle
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- 2026-S0835
Plan für individuelle Teilnehmerdaten (IPD)
Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?
Beschreibung des IPD-Plans
Individual Participant Data (IPD) will not be shared in this study. The primary reasons are threefold: (1) strict legal restrictions under China's Data Security Law and Personal Information Protection Law prohibit cross-institutional transfer of raw medical data without explicit consent; (2) as a retrospective study spanning several years, obtaining renewed consent from all participants is practically infeasible; and (3) the core federated learning framework inherently eliminates the need for IPD sharing-only encrypted model parameters are transmitted, while raw CT images and clinical data remain securely stored at each participating center. This design fully protects patient privacy, complies with all regulatory requirements, and ensures the study's collaborative objectives are achieved without ever exposing individual-level data.
Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
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