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Thermische ablatie van cervicale metastasen van schildkliercarcinoom

21 september 2026 bijgewerkt door: Instituto do Cancer do Estado de São Paulo

Echogeleide percutane thermische ablatie van cervicale metastasen van schildkliercarcinoom

This study will evaluate the clinical response and safety of ultrasound guided percutaneous thermal ablation of lymph node metastases from thyroid carcinoma as an alternative to surgical treatment.

The ablation of cervical lymph node metastases from differentiated thyroid carcinoma or medullary thyroid carcinoma will be directed to lesions larger than 0.8 cm, using ultrasound-guided radiofrequency ablation (RFA), laser ablation (LA) or cryoablation (Cryo) techniques, randomly assigned. Clinical and ultrasound monitoring will be carried out during 24 months, with examinations before the ablation procedure, immediately after including contrast-enhanced ultrasound (CEUS) when applicable, and B-mode, color Doppler and Shear-Wave elastography ultrasound follow up with 6, 12, and 24 months.

Studie Overzicht

Gedetailleerde beschrijving

Thyroidectomy is the main treatment of well differentiated thyroid carcinoma. Residual or recurrent cervical metastases are common (9-20% of patients during long-term follow up). Thermal ablation of cervical metastatic lymph nodes from thyroid carcinoma has been proposed in research centers as an option for the treatment of patients who remain with metastatic disease in cervical lymph nodes, despite thyroidectomy with or without neck dissection associated with radioiodine treatment. Potential advantages from percutaneous thermal ablation are related to less complication rates, less morbidity, possibility of outpatient treatment modality, and less global treatment costs when compared to the surgical approach.

Aims of the study:

  1. To evaluate safety and efficacy of ultrasound-guided thermal ablation in the treatment of cervical lymph node metastases from differentiated thyroid carcinoma
  2. To evaluate the best response to thermal ablation defined as lymph node reduction or volume stability after ablation
  3. To evaluate the CEUS patterns of lymph nodes before and after ablation
  4. To evaluate the elastography patterns of lymph nodes before and after ablation
  5. To evaluate the tumor marker response after ablation
  6. To evaluate the contribution of thermal ablation to decrease additional therapeutic procedures
  7. To compare differences between LA, RFA and cryoablation in terms of complications, side effects and tolerability

Patients with cervical metastatic lymph nodes from differentiated thyroid carcinoma or medullary thyroid carcinoma who meet the eligibility criteria and who have been determined to be an appropriate candidate for local ablation therapy will be offered enrollment into the study. Patients agreeing to participate will become subjects of the study if they read and sign an informed consent form.

Treatment will be performed using three different ablation technologies (laser ablation, RFA or cryoablation) in a randomly assignment fashion.

Subjects will have up to six simultaneous treated lesions larger than 0.8 cm diameter with positive fine-needle aspiration biopsy. Ultrasound (and CEUS when applicable) will be performed over 24 months follow up in order to evaluate efficacy. Baseline and follow-up data will be collected for each subject via a web-based electronic data collection tool.

In case of recurrent disease treated by any ablative technique in patients who did not undergo previous neck dissection, a rescue neck dissection will be performed; in case of recurrent disease treated by any ablative technique in patients who underwent previous neck dissection, a new ablative technique approach will be considered.

Studietype

Ingrijpend

Inschrijving (Werkelijk)

84

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

    • São Paulo
      • São Paulo, São Paulo, Brazilië, 01246000
        • Instituto do Cancer do Estado de São Paulo

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

18 jaar en ouder (Volwassen, Oudere volwassene)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

Inclusion Criteria:

  • 18 years of age or older
  • Patients with fine needle aspiration biopsy (FNAb)-proven metastatic cervical lymph nodes at levels I, II, III, IV, V, VI or VII from differentiated thyroid carcinoma or medullary thyroid carcinoma who underwent total thyroidectomy and subsequent radioiodine therapy, in case of differentiated thyroid carcinoma.
  • Patients considered high surgical risk candidate or patients who are informed about the ablation therapy and prefers it instead surgery;
  • Patients with metastatic cervical lymph nodes over 0.8 cm diameter and under 4.0 cm diameter; no more than 6 simultaneous cervical nodal metastases;
  • Cervical recurrences in previously lateral neck dissection patients for differentiated thyroid carcinoma or medullary thyroid carcinoma over 0.8 cm diameter.

Exclusion Criteria:

  • Age under 18 years
  • Uncorrectable coagulopathy;
  • Inconclusive or benign cytologic specimens;
  • Pregnancy or breast-feeding;
  • Anaplastic or poor-differentiated thyroid carcinoma;
  • Partial thyroidectomy
  • Cervical tumors not considered to surgery (invading vessels, nerves, larynx or trachea);
  • Serious medical illness, including any of the following: uncontrolled angina, myocardial infarction, cerebrovascular event within 6 months prior to the baseline visit, uncontrolled congestive heart failure;
  • Participation in other studies that could affect the primary endpoint

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Behandeling
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Actieve vergelijker: laser ablation

Percutaneous Laser Ablation for the treatment of metastatic cervical lymph nodes with > 0.8 cm diameter with biopsy-proven diagnosis of differentiated thyroid carcinoma or medullary thyroid carcinoma.

Single session with Diode laser ablation system; one or two applicators will be used for treatments; one to three illuminations; fixed output power of 3 watts (W); pullback technique; delivered energy: 1200-1800 Joules (J) varying according to tumor volume; treatment under local anesthesia +- conscious or moderate sedation;

Andere namen:
  • LA
Actieve vergelijker: cryoablation

Percutaneous cryoablation for the treatment of metastatic cervical lymph nodes with > 0.8 cm diameter with biopsy-proven diagnosis of differentiated thyroid carcinoma or medullary thyroid carcinoma.

Single session with Argon-based cryoablation system; one 17 Gauge (G) V-probe applicator will be used for treatments; fixed gas delivery of 100%; treatment under local anesthesia +- conscious or moderate sedation;

Andere namen:
  • Cryo
Actieve vergelijker: Radiofrequency ablation

Percutaneous radio frequency ablation for the treatment of metastatic cervical lymph nodes with > 0.8 cm diameter with biopsy-proven diagnosis of differentiated thyroid carcinoma or medullary thyroid carcinoma.

Single session with radiofrequency generator; one 17 Gauge (G) V-tip applicator with a 1 to 4cm active tip; moving-shot technique or multiple overlapping shot technique with 60 Watts (W) output power; treatment under local anesthesia +- conscious or moderate sedation;

Andere namen:
  • RFA

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Evaluation of technical feasibility
Tijdsspanne: immediately after the procedure

defined as the ability to target the nodule and to perform ablation as preoperatively planned

immediately after the procedure
Incidence of Treatment-Emergent Adverse Events [Safety and Tolerability] of thermal ablation of thyroid carcinoma cervical lymph node metastases
Tijdsspanne: up to 4 weeks post-ablation

Evaluation of minor and major complication rates, immediately after ablation; and one- and four-weeks post-ablation by telephone call.

Minor and major complication rates [Designed as a safety issue: Yes]. The safety endpoint for this study is to assess the incidence and severity of procedure or device-related adverse events, as reported by the Common Terminology Criteria of Adverse Events - CTCAE V5. 2017 Version.

up to 4 weeks post-ablation

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Evaluation of technical success
Tijdsspanne: immediately after the procedure

Defined as the complete absence of color Doppler or, if applicable when tumors over 1.0 cm diameter, enhancement by contrast-enhanced ultrasound in the treated nodule

immediately after the procedure
Evaluation of contrast-enhanced ultrasound pattern after thermal ablation therapy
Tijdsspanne: 12 months

Absence of enhancement is expected in treated cervical lymph nodes after local ablative therapy in comparison to pre-treatment enhancement pattern. Partial enhancement may indicate residual tumoral tissue requiring new ablation session

12 months
Evaluation of elastography pattern after thermal ablation therapy
Tijdsspanne: 24 months

Quantitative measurements of nodule stiffness designated by the most representative region of interest within the nodule estimating of Young's modulus in kilopascal (KPa) and shear wave velocity in centimetres per second (cm/s) of treated cervical lymph nodes after local ablative therapy in comparison to pre-treatment pattern.

24 months
Best response to the thermal ablation therapy
Tijdsspanne: 24 months

The best response is defined as a subject having local disease control related to lymph node volume reduction or volume stability in percentage will be assessed by ultrasound measurement in comparison to pre-treatment volume.

24 months
Evaluation of tumor marker response
Tijdsspanne: 24 months

Number of patients with tumor marker response: defined in negative thyroglobulin, calcitonin, or carcinoembryonic antigen (CEA) levels or anti-thyroglobulin antibodies

24 months
Evaluation of additional therapies
Tijdsspanne: 24 months

Number of patients with additional therapies: Additional therapies for persistent/recurrent local disease associated with the index tumor (s) under study or new cervical lymph node metastases.

24 months
Outcomes among thermal ablation therapies
Tijdsspanne: 24 months

Number of patients with complications, side effects and tolerability in each ablation technique.

24 months

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Onderzoekers

  • Hoofdonderzoeker: Ricardo MC Freitas, PhD, Instituto do Cancer do Estado de São Paulo

Publicaties en nuttige links

De persoon die verantwoordelijk is voor het invoeren van informatie over het onderzoek stelt deze publicaties vrijwillig ter beschikking. Dit kan gaan over alles wat met het onderzoek te maken heeft.

Algemene publicaties

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

22 december 2020

Primaire voltooiing (Werkelijk)

22 december 2025

Studie voltooiing (Werkelijk)

22 december 2025

Studieregistratiedata

Eerst ingediend

10 augustus 2020

Eerst ingediend dat voldeed aan de QC-criteria

19 augustus 2020

Eerst geplaatst (Werkelijk)

21 augustus 2020

Updates van studierecords

Laatste update geplaatst (Werkelijk)

22 september 2026

Laatste update ingediend die voldeed aan QC-criteria

21 september 2026

Laatst geverifieerd

1 september 2026

Meer informatie

Termen gerelateerd aan deze studie

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

JA

Beschrijving IPD-plan

De-identified individual participant data for all primary and secondary outcomes measures will be made available.

IPD-tijdsbestek voor delen

Data will become available within 18 months of study completion and for 6 months.

IPD-toegangscriteria voor delen

Data access requests will be reviewed by an external Independent Review Panel. Requestors will be required to sign a Data Access Agreement.

IPD delen Ondersteunend informatietype

  • LEERPROTOCOOL
  • SAP
  • ICF
  • ANALYTIC_CODE
  • MVO

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Ja

product vervaardigd in en geëxporteerd uit de V.S.

Ja

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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