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SBRT-LATTICE-PATHY

8. juni 2026 opdateret af: Heloísa de Andrade Carvalho, University of Sao Paulo General Hospital

Impact of Partial Stereotactic Body Radiotherapy in Hypoxic Segments of Large-volume Unresectable Tumors (SBRT-LATTICE-PATHY) - a Prospective Phase II Study.

To assess the importance of using SBRT-LATTICE-PATHY for the radiotherapy treatment of large tumors that would be considered intractable by currently used standard techniques. In this present study, the investigators will have the possibility of combining SBRT and LATTICE techniques, incorporating the concept of hypoxic tissue irradiation, which are potential modulators of abscopal and bystander effects, performing partial punctual treatment in the vertex region, without the need for irradiation of the entire tissue volume, further improving safety in relation to possible toxicities.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

20

Fase

  • Fase 2

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Brasilien
    • São Paulo
      • São Paulo, São Paulo, Brasilien, 05403905
        • Rekruttering
        • Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo - Instituto de Radiologia
        • Kontakt:
        • Underforsker:
          • Thiago Brasileiro de Freitas, MD
        • Underforsker:
          • Silvio Thiago Pereira Vasconcelos, MD
        • Underforsker:
          • Caroline Castilhano Sampaio, Medical physicist

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  • age =or> 18 years;
  • Eastern Cooperative Oncology Group (ECOG) performance status < 2; benign and malignant tumors for which the use of radiotherapy is well established in the literature;
  • tumors =or> 340 cm³ or with a largest diameter =or> 7 cm;
  • no indication for any other type of treatment due to lack of proven clinical benefit (surgery, chemotherapy, standard radiotherapy, immunotherapy, targeted therapy, etc.);
  • Palliative Prognostic Index (PPI) =or< 2;
  • metastatic disease in the central nervous system (CNS), if present, controlled (up to 3 metastases, each up to 1 cm);
  • up to 5 extracranial distant metastases (nodal or extranodal) =or< 5 cm; signed Informed Consent Form (ICF).

Exclusion Criteria:

  • cases in which tumor volume and/or the patient's clinical condition make adequate immobilization/simulation impossible;
  • previous local radiotherapy;
  • pregnant patients;
  • autoimmune diseases;
  • genetic instability syndromes;
  • ongoing systemic therapy;
  • renal insufficiency that prevents the use of iodinated contrast.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: SBRT-LATTICE-PATHY
1 fraction of 24Gy in intratumoral vertices
Stråling: SBRT-LATTICE-PATHY
SBRT-LATTICE-PATHY, a single dose of 24Gy in intratumoral vertices located in hypoxic regions.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Rate of local control at 12 months
Tidsramme: From enrollment to the end of treatment at 12 months
Percentage of participants achieving local control, defined as absence of local tumor progression assessed by imaging (CT).
From enrollment to the end of treatment at 12 months
Tumor volume shrinkage at 12 months
Tidsramme: From enrollment to the end of treatment at 12 months
Percentage reduction in gross tumor volume (GTV) measured by CT at 12 months compared to baseline, calculated as [(baseline volume - follow-up volume) / baseline volume] × 100.
From enrollment to the end of treatment at 12 months

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
12-month overall survival rate
Tidsramme: 12 months overall survival
Percentage of participants alive at 12 months after treatment initiation. Overall survival is defined as the time from enrollment to death from any cause.
12 months overall survival
12-month progression-free survival rate
Tidsramme: 12 months Progression Free Survival
Percentage of participants alive and without disease progression at 12 months after treatment initiation. Progression is assessed by CT imaging. Time is measured from enrollment to the first documented disease progression or death from any cause, whichever occurs first.
12 months Progression Free Survival
Rate of acute adverse events assessed by CTCAE v 5.0
Tidsramme: 15 days, 1 month and 3 months after treatment initiation
Incidence and severity of acute adverse events assessed according to the National Cancer Institute Common Terminology Criteria for Adverse Events, version 5.0 (NCI CTCAE v5.0). Reported as the percentage of participants experiencing grade ≥1 adverse events. Assessed at 15 days, 1 month, and 3 months after treatment initiation.
15 days, 1 month and 3 months after treatment initiation
Rate of late adverse events assessed by CTCAE v5.0
Tidsramme: 6, 9 and 12 months after treatment completion
Incidence and severity of late adverse events assessed according to the National Cancer Institute Common Terminology Criteria for Adverse Events, version 5.0 (NCI CTCAE v5.0). Reported as the percentage of participants experiencing grade ≥1 adverse events. Assessed at 6, 9, and 12 months after treatment completion.
6, 9 and 12 months after treatment completion
Mean EORTC QLC-C30 Global Health Status / Quality of Life Score)
Tidsramme: Impact in quality of life in 1, 3, 6, 9 and 12 months after treatment completion
Quality of life assessed using the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC QLQ-C30). The Global Health Status/QoL subscale is scored from 0 to 100, where higher scores indicate better quality of life. Assessed at 1, 3, 6, 9, and 12 months after treatment.
Impact in quality of life in 1, 3, 6, 9 and 12 months after treatment completion

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

University of Sao Paulo General Hospital

Efterforskere

  • Ledende efterforsker: Heloisa de Andrade Carvalho, MD, PhD, University of Sao Paulo

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

28. april 2026

Primær færdiggørelse (Anslået)

31. december 2027

Studieafslutning (Anslået)

31. december 2027

Datoer for studieregistrering

Først indsendt

3. juni 2026

Først indsendt, der opfyldte QC-kriterier

8. juni 2026

Først opslået (Faktiske)

12. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

12. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

8. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 86859225.3.0000.0068

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

Spreadsheet data (RedCap), ICF

IPD-delingstidsramme

06-03-2026 to 12-31-2028

IPD-delingsadgangskriterier

Reasearchers will be able to acess the IPD and supporting information. To have access, they must contact the principal investigator who will share the ICF and Study Protocol.

IPD-deling Understøttende informationstype

  • STUDY_PROTOCOL
  • ICF

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Studerer et amerikansk FDA-reguleret enhedsprodukt

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Kliniske forsøg med Svulst

Kliniske forsøg med SBRT-LATTICE-PATHY

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