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Ultralavdosis strålebehandling til behandling af patienter med trin I-IV mave MALT lymfom

5. oktober 2026 opdateret af: M.D. Anderson Cancer Center

Ultra lav dosis 4 Gy stråling til endelig terapi af gastrisk MALT lymfom

This trial studies how well ultra low-dose radiation therapy works in treating patients with stage I-IV stomach mucosa-associated lymphoid tissue (MALT) lymphoma. Ultra low-dose radiation therapy may be able to kill tumor cells and shrink tumors while having fewer side effects in patients with MALT lymphoma.

Studieoversigt

Status

Aktiv, ikke rekrutterende

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

PRIMARY OBJECTIVE:

I. To evaluate the efficacy of ultra-low dose 4 Gy gastric radiation, measured as complete gastric response at one year after 4 Gy treatment in patients with marginal zone lymphoma involving the stomach (mucosa-associated lymphoid tissue [MALT]).

SECONDARY OBJECTIVES:

I. To evaluate distant recurrence of marginal zone lymphoma at one year. II. To evaluate toxicity associated with gastric radiation therapy.

EXPLORATORY OBJECTIVES:

I. To determine if microbiome assessment can predict response to ultra-low dose radiation therapy and evaluate the differences in patient microbiome for patients who respond well and poorly to low dose radiation.

II. To determine if micro-ribonucleic acid (RNA) assessment can predict response to ultra-low dose radiation therapy and evaluate the differences in patient microRNA profiles for patients who respond well and poorly to low dose radiation.

III. To explore the role of magnetic resonance imaging (MRI) for staging gastric MALT lymphoma and for predicting response to ultra-low dose radiation therapy.

IV. To encourage optional co-enrollment on study PA18-0644 to facilitate collection and archiving of blood based biomarkers and microbiome samples for patients receiving ultra low dose radiation therapy.

OUTLINE:

Patients undergo low-dose radiation therapy over 2 fractions for 2 consecutive days in the absence of disease progression or unacceptable toxicity. Patients with stable or progressive disease at 12-16 weeks post-treatment, or persistent disease at 1 year may undergo higher-dose radiation therapy at the discretion of treating physician.

After completion of study treatment, patients are followed up every 3 months for up to 1 year.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

25

Fase

  • Tidlig fase 1

Kontakter og lokationer

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

Studiesteder

    • Texas
      • Houston, Texas, Forenede Stater, 77030
        • M D Anderson Cancer Center

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

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Patients 18 years or older with stage I-IV MALT lymphoma involving the stomach. Other low grade lymphomas including follicular grade I/II and chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL) are ineligible
  • Patients must have biopsy-proven disease within the stomach. Patients with clinical and/or radiographic masses will have dimensions noted prior to therapy
  • Patients must have H. pylori testing which is negative within 6 months prior to treatment
  • Female patients of childbearing potential must have a negative serum pregnancy test (human chorionic gonadotropin [hCG]) within 2 weeks of protocol entry
  • Planned systemic therapy prior to, during, or after gastric radiation therapy is permitted however the timing of systemic therapy will be recorded and patients will be stratified according to receipt of systemic therapy
  • Patients must have the ability to give informed consent
  • Necessary treatment with antibiotics for reasons unrelated to gastric lymphoma is permitted however the timing and nature of the treatment will be recorded

Exclusion Criteria:

  • Patients with aggressive B cell lymphoma histology, including diffuse large B cell lymphoma (DLBCL) and grade 3 follicular lymphoma
  • Patients with other histologic subtypes of low grade lymphoma (other than MALT) including chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL) or follicular lymphoma
  • Patients with bulky tumors > 10 cm in any dimension
  • Patients with a history of prior radiation to the stomach if re-treatment would exceed known gastric or surrounding critical structure (e.g., bowel, spinal cord) tolerance
  • Patients who are pregnant
  • Patients with scleroderma are ineligible

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: Treatment (low-dose radiation therapy)

Patients undergo low-dose radiation therapy over 2 fractions for 2 consecutive days in the absence of disease progression or unacceptable toxicity. Patients with stable or progressive disease at 12-16 weeks post-treatment, or persistent disease at 1 year may undergo higher-dose radiation therapy at the discretion of treating physician.

Undergo ultra low-dose radiation

Andre navne:
  • Kræftstrålebehandling
  • ENERGY_TYPE
  • Bestråle
  • Bestrålet
  • Bestråling
  • Stråling
  • Stråleterapi, NOS
  • Radioterapeutika
  • Strålebehandling
  • RT
  • Terapi, Stråling

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Complete gastric response
Tidsramme: Up to 1 year

The complete response rate at one year will be estimated along with 95% confidence intervals.

Up to 1 year

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Distant recurrence defined as disease progression outside of the stomach that was not present initially
Tidsramme: Up to 1 year

Distant recurrence rate at one year will be estimated along with 95% confidence intervals.

Up to 1 year
Incidence of acute gastrointestinal toxicity graded according to Common Terminology Criteria for Adverse Events (CTCAE) version (v.) 4.03
Tidsramme: Up to 1 year

Toxicity data will be summarized by frequency tables.

Up to 1 year
Incidence of chronic gastrointestinal toxicity graded according to CTCAE v. 4.03
Tidsramme: Up to 1 year

Toxicity data will be summarized by frequency tables.

Up to 1 year
Time to local gastric event
Tidsramme: Up to 1 year

Will be estimated using the Kaplan-Meier method.

Up to 1 year
Time to distant event
Tidsramme: Up to 1 year

Will be estimated using the Kaplan-Meier method.

Up to 1 year
Tumor response
Tidsramme: Up to 1 year

The tumor responses will be summarized stratified by systemic treatments.

Up to 1 year

Samarbejdspartnere og efterforskere

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

Sponsor

Samarbejdspartnere

Efterforskere

  • Ledende efterforsker: Jillian Gunther, M.D. Anderson Cancer Center

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.

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)

4. februar 2019

Primær færdiggørelse (Anslået)

30. april 2028

Studieafslutning (Anslået)

30. april 2028

Datoer for studieregistrering

Først indsendt

20. september 2018

Først indsendt, der opfyldte QC-kriterier

20. september 2018

Først opslået (Faktiske)

21. september 2018

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

6. oktober 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

5. oktober 2026

Sidst verificeret

1. oktober 2026

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 2018-0392
  • 2018-0392 (Anden identifikator: M D Anderson Cancer Center)
  • NCI-2018-01948 (Registry Identifier: CTRP (Clinical Trial Reporting Program))

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ja

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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