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Evaluering af RBS2418 hos patienter med avanceret, metastatisk og progressiv kolorektal kræft (VISTA-1)

3. november 2026 opdateret af: Riboscience, LLC.

En randomiseret, dobbeltblind, placebokontrolleret fase 2A-undersøgelse af RBS2418 Plus Bedste støttende pleje (BSC) hos personer med avanceret, metastatisk og progressiv kolorektal kræft

RBS2418 is a specific immune modulator that works through the inhibition of ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1) and is designed to lead to anti-tumor immunity by protecting endogenous 2'-3'-cyclic guanosine monophosphate-adenosine monophosphate (cGAMP) from hydrolysis and leading to the activation of antigen-presenting cells followed by T cell activation. The hypothesis is that RBS2418 versus placebo will be generally safe, well-tolerated, immunogenic, and will lead to anti-tumor responses in adult subjects for the treatment of advanced, metastatic, and progressive colorectal cancer (CRC).

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

In this Phase 2a study, subjects must have failed, been unable to tolerate, or declined to take known standard-of-care (SOC) therapies. Subjects must have measurable disease per RECIST 1.1, an Eastern Cooperative Oncology Group (ECOG) performance score of 0, 1 or 2, and predicted life expectancy of greater or equal to 3 months.

Up to approximately 150 subjects will be enrolled and will receive therapy as part of their respective treatment group. Subjects will receive study treatment of RBS2418 or Placebo to Match plus Best Supportive Care with a treatment period consisting of 21-day cycles up to two years or until there is progressive disease (PD), death, withdrawal, or study completion, whichever comes first.

Adverse events (AEs) will be monitored throughout the study and graded in severity according to the guidelines outlined in the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) v5.0. AEs will be collected until up to 30 days after the end of treatment or until resolution, whichever comes first. Serious Adverse Events (SAEs) will be collected for 90 days after the end of treatment, or if the subject initiates new anti-cancer therapy, then 30 days after the end of treatment, whichever is earlier.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

150

Fase

  • Fase 2

Kontakter og lokationer

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

Studiekontakt

Studiesteder

    • Delaware
      • Newark, Delaware, Forenede Stater, 19718
        • Rekruttering
        • Christiana Care
    • Nevada
      • Las Vegas, Nevada, Forenede Stater, 89169
        • Rekruttering
        • Comprehensive Cancer Centers of Nevada
    • Tennessee
      • Nashville, Tennessee, Forenede Stater, 37203
        • Rekruttering
        • SCRI Oncology LLC
    • Texas
      • Kingwood, Texas, Forenede Stater, 77339
        • Rekruttering
        • Community Clinical Trials
      • San Juan, Puerto Rico, 00935
        • Rekruttering
        • Pan Oncology
      • Ho Chi Minh City, Vietnam, 715000
        • Rekruttering
        • Oncology Hospital
    • Hanoi
      • Hanoi, Hanoi, Vietnam, 10000
        • Rekruttering
        • Tam Anh, Ha Noi General Hospital
    • Ho Chi Minh City
      • Ho Chi Minh City, Ho Chi Minh City, Vietnam, 70000
        • Rekruttering
        • Tam Anh TP. Ho Chi Minh General Hospital

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:

  1. At least 18 years of age on the day of signing informed consent.
  2. Male and female subjects with advanced, metastatic, progressive CRC who have received, been ineligible for, intolerant to, or declined all approved standard of care (SOC) therapies for metastatic CRC, as per local SOC treatment regimens. Additionally, subjects must have documented PD based on two scans performed within 2 to 4 months of study initiation.
  3. Have histologically or cytologically confirmed CRC diagnosis based on pathology report.
  4. Willing to submit a pre-treatment tissue sample (archival, or fresh tissue if archival is not available).

Exclusion Criteria:

  1. Any approved anti-cancer therapy including chemotherapy, targeted small molecule therapy, systemic immunotherapy, or radiation therapy within 2 weeks prior to the first dose of study treatment; or if subject has not recovered (i.e., ≤ to Grade 1 or returned to baseline level) from AEs due to a previously administered agent; the following exceptions are allowed:

    • Palliative radiotherapy for bone metastases or soft tissue lesions should be completed >7 days prior to the first dose of study treatment.
    • Hormone-replacement therapy or oral contraceptives.
    • Subjects with Grade 2 neuropathy or Grade 2 alopecia.
  2. Subjects with evidence of rapid progression on prior therapy resulting in rapid clinical deterioration.

  3. Malignancies other than indications open for enrollment within 3 years prior to Day 1, except for those with negligible risk of metastasis or death treated with expected curative outcome, undergoing active surveillance, or treatment-naïve for indolent tumors.

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: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Firedobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv komparator: Group A: EG+ [ENPP1 and cGAS(Cyclic GMP-AMP synthase) positive] RBS2418 plus Best Supportive Care

RBS2418: 200 mg (2 RBS2418 capsules), PO (by mouth), BID (twice a day) plus Best Supportive Care

RBS2418 is a specific immune modulator that works through the inhibition of ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1) and is designed to lead to anti-tumor immunity by protecting endogenous 2'-3'-cyclic guanosine monophosphate-adenosine monophosphate (cGAMP) from hydrolysis and leading to the activation of antigen-presenting cells followed by T cell activation.

Placebo komparator: Group B: EG+ (ENPP1 and cGAS positive) Placebo plus Best Supportive Care

Placebo: 2 placebo capsules, PO, BID plus Best Supportive Care

Placebo to Match RBS2418

Aktiv komparator: Group C: EG- (ENPP1 and/or cGAS negative) RBS2418 plus Best Supportive Care

RBS2418: 200 mg (2 RBS2418 capsules), PO, BID plus Best Supportive Care

RBS2418 is a specific immune modulator that works through the inhibition of ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1) and is designed to lead to anti-tumor immunity by protecting endogenous 2'-3'-cyclic guanosine monophosphate-adenosine monophosphate (cGAMP) from hydrolysis and leading to the activation of antigen-presenting cells followed by T cell activation.

Placebo komparator: Group D: EG- (ENPP1 and/or cGAS negative) Placebo plus Best Supportive Care

Placebo: 2 placebo capsules, PO, BID plus Best Supportive Care

Placebo to Match RBS2418

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Progression Free Survival
Tidsramme: From randomization until the first radiographic documentation of objective progression or death from any cause, assessed up to 2 years.

Time in months from randomization until the first radiographic documentation of objective progression, as assessed using Response Evaluation Criteria in Solid Tumors (RECIST) 1.1, or death from any cause

From randomization until the first radiographic documentation of objective progression or death from any cause, assessed up to 2 years.
Overall Survival
Tidsramme: From randomization until death from any cause, assessed up to 2 years.

Time in months from the date of randomization to the date of death from any cause

From randomization until death from any cause, assessed up to 2 years.

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Duration of Response (DOR)
Tidsramme: From initial response to disease progression or death, assessed up to 2 years.

DOR is defined as the time in months from initial response [when complete response (CR) or partial response (PR) is first determined] to disease progression or death, whichever comes first.

From initial response to disease progression or death, assessed up to 2 years.
Disease Control Rate (DCR)
Tidsramme: From randomization to end of treatment or disease progression, assessed up to 2 years.

DCR is defined as the percentage of subjects who achieve a complete response (CR), a partial response (PR) or stable disease (SD).

From randomization to end of treatment or disease progression, assessed up to 2 years.

Samarbejdspartnere og efterforskere

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

Sponsor

Samarbejdspartnere

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)

17. januar 2025

Primær færdiggørelse (Anslået)

1. december 2027

Studieafslutning (Anslået)

1. december 2027

Datoer for studieregistrering

Først indsendt

30. januar 2025

Først indsendt, der opfyldte QC-kriterier

10. februar 2025

Først opslået (Faktiske)

13. februar 2025

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

5. november 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

3. november 2026

Sidst verificeret

1. november 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • RBS2418-2001

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ja

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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