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Intratumoral PH-762 til kutant karcinom

16. september 2026 opdateret af: Phio Pharmaceuticals Inc.

Dosiseskaleringsundersøgelse af neoadjuverende intratumoral PH-762 til kutan pladecellekarcinom, melanom eller Merkelcellekarcinom

The goal of this clinical trial is to evaluate the safety and tolerability of intratumoral injections of PH-762 in squamous cell carcinoma, melanoma, or Merkel cell carcinomas of the skin, to understand what the body does to the PH-762, and to observe how the tumor responds to the drug. Participants will receive four injections of PH-762 at weekly intervals, into a single tumor, followed by surgical removal of the tumor approximately two weeks later.

Studieoversigt

Detaljeret beskrivelse

PH-762 is a potent RNAi molecule targeting PD-1. PH-762 can inhibit the immune checkpoint PD-1 in the tumor and thereby impede tumor growth. As a preoperative therapy, it may decrease the lesion size and has the potential to improve surgical morbidity. Intratumoral immunotherapy aims to use the tumor as a 'self-vaccine'. The local immune stimulation can induce robust priming of an anti-tumor immune response while generating systemic (abscopal) tumor responses, mediated by properly activated anti-tumor immune cells in the circulation. Local delivery of immunotherapy is expected to minimize systemic exposure and off-target toxicities.

This is a non-comparative study of neoadjuvant monotherapy using PD-1 targeting self-delivering RNAi (PH-762) in adult subjects with cutaneous squamous cell carcinoma, melanoma, or Merkel cell carcinoma. The study treatment consists of four intratumoral injections of PH-762 at weekly intervals, into a single tumor lesion. Excision of the tumor will occur approximately two weeks following the fourth dose of IT PH-762, and the subjects will be followed for an additional 11 weeks.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

22

Fase

  • Fase 1

Kontakter og lokationer

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

Studiesteder

    • Arizona
      • Gilbert, Arizona, Forenede Stater, 85234
        • Banner MD Anderson Cancer Center
    • California
      • San Diego, California, Forenede Stater, 92108
        • Paradigm Clinical Research
    • Florida
      • Delray Beach, Florida, Forenede Stater, 33445
        • Integrity Research
    • Nevada
      • Reno, Nevada, Forenede Stater, 89509
        • Skin Cancer and Dermatology Institute
    • Ohio
      • Columbus, Ohio, Forenede Stater, 43213
        • Centricity Research

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

Key Inclusion Criteria:

  • Histologically confirmed cutaneous squamous cell carcinoma (cSCC), melanoma, or Merkel cell carcinoma, meeting one of the following criteria:

    • cSCC, resectable local tumors: must be Stage II or lower, amenable to curative resection and in a location where acceptable surgical margins are anticipated
    • cSCC, unresectable local tumors: must be Stage II or lower, tumor has been unresponsive to prior radiation therapy or is not a candidate for curative radiation therapy
    • cSCC, metastatic disease: disease has progressed during or following prior checkpoint inhibitor therapy (anti-PD-1 or anti-PD-L1 antibody)
    • Melanoma, metastatic disease: Stage IV disease with a cutaneous lesion that has progressed during or following checkpoint inhibitor therapy (anti-PD-1/-PD-L1), and if BRAF-mutation is present, has progressed during or following prior treatment with anti-BRAF + MEK therapy
    • Merkel cell carcinoma, metastatic disease: Stage IV disease with a cutaneous lesion that has progressed during or following checkpoint inhibitor therapy (anti-PD-1/PD-L1)
  • A minimum of one tumor of ≥ 1.0 cm and < 3.0 cm in longest dimension that is accessible (with or without imaging guidance) for intratumoral injection and for biopsy and surgical excision must be present. The tumor is not necrotic, hemorrhagic, or friable, and is not within 2 cm of the eye or within 0.5 cm of or on the lip (including the vermilion border) and is not in a mucosal or visceral location.

Key Exclusion Criteria:

  • Other malignancy within prior 3 years, with certain exceptions.
  • Current cancer chemotherapy, radiation therapy, immunotherapy, or biologic therapy.
  • Any serious or uncontrolled medical disorder including auto-immune disease that may increase the risk associated with study participation or study drug administration, or interfere with the interpretation of study results.
  • Females who are pregnant or are breastfeeding.

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: Sequential escalating doses of PH-762.

Escalating doses of PH-762 are to be tested, with an observation period between doses.

PH-762 is a potent RNAi molecule targeting PD-1.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Adverse Events
Tidsramme: 16 weeks

Incidence, severity, seriousness and relatedness of all treatment-emergent adverse events.

16 weeks

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Pharmacokinetics: maximum plasma concentration (Cmax)
Tidsramme: 3.5 weeks

Maximum concentration of PH-762 following intratumoral injection.

3.5 weeks
Pharmacokinetics: time to maximum plasma concentration (Tmax)
Tidsramme: 3.5 weeks

Time to maximum concentration of PH-762 following intratumoral injection.

3.5 weeks
Pharmacokinetics: area under the curve to last quantifiable plasma concentration (AUClast)
Tidsramme: 3.5 weeks

Exposure to PH-762 through last quantifiable concentration following intratumoral injection.

3.5 weeks
Pathologic response
Tidsramme: 5 weeks

Pathological response will be assessed by relative amount of viable tumor in resection specimens of the treated lesion.

5 weeks
Tumor burden
Tidsramme: 5 weeks

Change in tumor burden will be assessed per RECIST/ iRECIST guidelines for the treated lesion.

5 weeks

Samarbejdspartnere og efterforskere

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

Samarbejdspartnere

Efterforskere

  • Studieleder: Linda Mahoney, Phio Pharmaceuticals Inc.

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)

7. november 2023

Primær færdiggørelse (Faktiske)

29. december 2025

Studieafslutning (Faktiske)

17. marts 2026

Datoer for studieregistrering

Først indsendt

22. august 2023

Først indsendt, der opfyldte QC-kriterier

25. august 2023

Først opslået (Faktiske)

28. august 2023

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

21. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

16. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ja

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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