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GI-102 (CD80-IgG4 Fc-IL2v3) in Combination With Pasritamig in Patients With Metastatic Castration-resistant Prostate Cancer (mCRPC) (JET-201)

4 novembre 2026 aggiornato da: GI Innovation, Inc.

A Phase 1b/2, Open-label, Multi-center Study to Evaluate the Anti-cancer Activity, Safety and Tolerability of GI-102 (CD80-IgG4 Fc-IL2v3) in Combination With Pasritamig [T-CELL-Redirecting Agent Targeting Human Kallikrein 2 (KLK2)] in Patients With Metastatic Castration-resistant Prostate Cancer (mCRPC) Who Progressed on Previous Novel Hormonal Therapy (NHT) (JET-201)

The purpose of this clinical trial is to evaluate the safety, tolerability, and preliminary anti-cancer activity of GI-102 in combination with pasritamig in adult men with metastatic castration-resistant prostate cancer (mCRPC) whose cancer has progressed after previous treatment with a novel hormonal therapy (NHT).

Panoramica dello studio

Stato

Reclutamento

Condizioni

Intervento / Trattamento

Tipo di studio

Interventistico

Iscrizione (Stimato)

107

Fase

  • Fase 2
  • Fase 1

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Luoghi di studio

      • Seoul, Corea del Sud, 05505
        • Reclutamento
        • Asan Medical Center
        • Investigatore principale:
          • Jae Lyun Lee, M.D., Ph.D.
      • Seoul, Corea del Sud, 03722
        • Reclutamento
        • Yonsei University Health System, Severance Hospital
        • Investigatore principale:
          • Sang Joon Shin, M.D., Ph.D.
    • Banpo-daero
      • Seoul, Banpo-daero, Corea del Sud, 06591
        • Reclutamento
        • The Catholic University of Korea Seoul ST.MARY'S Hospital
        • Investigatore principale:
          • In Ho Kim
    • Seongbuk-gu
      • Seoul, Seongbuk-gu, Corea del Sud, 02841
        • Reclutamento
        • Korea University Anam Hospital
        • Investigatore principale:
          • Jwa Hoon Kim, M.D.
    • Yangcheon-gu
      • Seoul, Yangcheon-gu, Corea del Sud, 07985
        • Reclutamento
        • Ewha Womans University Mokdong Hospital
        • Investigatore principale:
          • Jeong Min Cho
    • New York
      • New York, New York, Stati Uniti, 10032
        • Non ancora reclutamento
        • Columbia University Medical Center
        • Investigatore principale:
          • Mark N. Stein, M.D.

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

18 anni e precedenti (Adulto, Adulto più anziano)

Accetta volontari sani

No

Sessi ammissibili allo studio

Maschio

Descrizione

Key Inclusion Criteria:

  • Male participants aged ≥18 years (or ≥19 years according to local regulatory requirements).
  • ECOG performance status of 0 to 1.
  • Histologically confirmed advanced prostate adenocarcinoma with measurable or evaluable disease. Adenocarcinoma with small cell or neuroendocrine (NE) features is permitted. However, primary small cell carcinoma, carcinoid tumor, mixed NE carcinoma, or large cell NE carcinoma (or pathologic evidence of conversion to) is disallowed.
  • Metastatic castration-resistant prostate cancer (mCRPC) with documented disease progression following at least one line of novel androgen receptor-targeted therapy.
  • PSA ≥2 ng/mL at screening.
  • No more than 2 prior taxane regimens and no prior cytotoxic chemotherapy other than taxane therapy.
  • Prior orchiectomy or ongoing androgen deprivation therapy with castrate testosterone levels.
  • Adequate organ and marrow function and adequate cardiovascular function.
  • Adequate recovery from prior anticancer therapy-related adverse events.
  • Willingness and ability to comply with study procedures and protocol-specified contraception requirements.

Key Exclusion Criteria:

  • Active or prior CNS metastases, carcinomatous meningitis, or clinically unstable spinal cord compression.
  • Significant uncontrolled cardiovascular, pulmonary, hepatic, autoimmune, infectious, or other systemic disease.
  • Active or recent clinically significant infection, including active tuberculosis, hepatitis B, or hepatitis C.
  • Active pneumonitis or interstitial lung disease (ILD), or history of clinically significant pneumonitis/ILD.
  • Recent treatment with investigational products, prohibited immunomodulating agents, radiotherapy, major surgery, or other protocol-defined prohibited therapies.
  • Prior treatment with CD3-directed therapies, including KLK2-CD3 bispecific antibodies or other CD3-targeting T-cell engagers.
  • Known hypersensitivity to GI-102, pasritamig, or their excipients, or any other condition that may interfere with study participation or interpretation of results.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: Non randomizzato
  • Modello interventistico: Assegnazione sequenziale
  • Mascheramento: Nessuno (etichetta aperta)

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Safety run-in: GI-102 + pasritamig (Schedule A)

Participants receive GI-102 in combination with pasritamig during the Safety run-in phase. Dose escalation is guided by a Bayesian Optimal Interval (BOIN) design.

GI-102 will be administered in accordance with the procedures specified in the study protocol.

Pasritamig will be administered in accordance with the procedures specified in the study protocol.

Sperimentale: Safety run-in: GI-102 + pasritamig (Schedule B)

Participants receive GI-102 in combination with pasritamig during the Safety run-in phase. Dose escalation is guided by a Bayesian Optimal Interval (BOIN) design.

GI-102 will be administered in accordance with the procedures specified in the study protocol.

Pasritamig will be administered in accordance with the procedures specified in the study protocol.

Sperimentale: Expansion

Participants enrolled in the Expansion phase will receive the combination recommended Phase 2 regimen (cRP2R) of GI-102 and pasritamig, determined based on the safety and dose-escalation results from the Safety run-in phase.

GI-102 will be administered in accordance with the procedures specified in the study protocol.

Pasritamig will be administered in accordance with the procedures specified in the study protocol.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Incidence and nature of DLTs (Safety run-in phase)
Lasso di tempo: From Day -14 to Cycle 1 Day 22 (35 days)

A DLT is defined as a clinically significant AE (classified according to the NCI CTCAE version 6.0) or significant laboratory abnormality that occur during the DLT assessment periods, and is considered by the Investigator to be related to the study drug(s).

From Day -14 to Cycle 1 Day 22 (35 days)
Incidence, nature, and severity of AEs graded according to CTCAE v6.0 (Safety run-in phase)
Lasso di tempo: Up to 2 years

An adverse event (AE) is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. Preexisting conditions which worsen during a study are also considered as AEs. All AE events will be graded according to National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 6.0.

Up to 2 years
PSA response rate (≥ 50% decline from baseline) per PCWG3 (Expansion phase)
Lasso di tempo: Up to 2 years

PSA response rate is defined as the percentage of participants with a decline of PSA of 50% or more from baseline.

Up to 2 years

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
PSA response rate (≥ 50% and ≥ 90% decline from baseline) per PCWG3 (Safety run-in phase)
Lasso di tempo: Up to 2 years

PSA response rate is defined as the percentage of participants with a decline of PSA of 50% (or 90%) or more from baseline.

Up to 2 years
Radiographic PFS per PCWG3
Lasso di tempo: Up to 2 years

Radiographic PFS is defined as the time from the date of first dose of any study treatment until the date of radiographic disease progression or death, whichever comes first.

Up to 2 years
Time to PSA progression
Lasso di tempo: Up to 2 years

Time to PSA progression, defined as the time from baseline to the first date of documented PSA progression per PCWG3 criteria.

Up to 2 years
Overall Response Rate (ORR) per RECIST v1.1
Lasso di tempo: Up to 2 years

Among participants with measurable disease, ORR is defined as the percentage of participants who achieve a partial response (PR) or complete response (CR) according to RECIST v1.1.

Up to 2 years
Duration of Response (DoR) per RECIST v1.1
Lasso di tempo: Up to 2 years

Among participants with measurable disease who achieve a CR or PR, DoR is defined as the time from the first documented CR or PR until the first documented disease progression according to RECIST v1.1 or death from any cause, whichever occurs first.

Up to 2 years
Disease Control Rate (DCR) per RECIST v1.1
Lasso di tempo: Up to 2 years

Among participants with measurable disease, DCR is defined as the percentage of participants who achieve a CR, PR, or stable disease (SD) according to RECIST v1.1.

Up to 2 years
Incidence, nature, and severity of AEs graded according to CTCAE v6.0 (Expansion phase)
Lasso di tempo: Up to 2 years

An adverse event (AE) is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. Preexisting conditions which worsen during a study are also considered as AEs. All AE events will be graded according to National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 6.0.

Up to 2 years
PK profile: peak plasma concentration (Cmax) of GI-102 when combined with pasritamig
Lasso di tempo: Up to 2 years

Plasma concentrations of GI-102 will be measured at specified time points following administration of GI-102 in combination with pasritamig to determine the maximum observed plasma concentration (Cmax).

Up to 2 years
PK profile: half-life (T1/2) of GI-102 when combined with pasritamig
Lasso di tempo: Up to 2 years

Plasma concentrations of GI-102 will be measured at specified time points following administration of GI-102 in combination with pasritamig to determine the terminal half-life (T1/2) of GI-102.

Up to 2 years
PK profile: area under the plasma concentration-time curve (AUC) of GI-102 when combined with pasritamig
Lasso di tempo: Up to 2 years

Plasma concentrations of GI-102 will be measured at specified time points following administration of GI-102 in combination with pasritamig to determine the area under the plasma concentration-time curve (AUC) of GI-102.

Up to 2 years

Altre misure di risultato

Misura del risultato
Misura Descrizione
Lasso di tempo
Immune cell phenotyping in peripheral blood
Lasso di tempo: Up to 2 years

Immune cell populations and their changes following study treatment will be assessed in peripheral blood using flow cytometry.

Up to 2 years
Overall Response Rate (ORR) per iRECIST
Lasso di tempo: Up to 2 years

ORR is defined as the percentage of participants who achieve a partial response (PR) or complete response (CR) according to the iRECIST criteria.

Up to 2 years
Overall Survival (OS)
Lasso di tempo: Up to 2 years

Overall survival (OS) is defined as the time from the first dose of study treatment to death from any cause.

Up to 2 years
Incidence of anti-GI-102 antibody (ADA)
Lasso di tempo: Up to 2 years

Serum samples will be analyzed using a validated assay to determine the incidence of anti-GI-102 antibodies (ADA).

Up to 2 years
Incidence of Neutralizing Antibody (Nab) Against GI-102
Lasso di tempo: Up to 2 years

Serum samples that are positive for anti-GI-102 antibodies (ADA) will be further analyzed using a validated assay to determine the incidence of neutralizing antibodies (Nab).

Up to 2 years

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Collaboratori

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Stimato)

12 ottobre 2026

Completamento primario (Stimato)

31 marzo 2029

Completamento dello studio (Stimato)

30 settembre 2029

Date di iscrizione allo studio

Primo inviato

1 ottobre 2026

Primo inviato che soddisfa i criteri di controllo qualità

6 ottobre 2026

Primo Inserito (Effettivo)

13 ottobre 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

9 novembre 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

4 novembre 2026

Ultimo verificato

1 novembre 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

  • GII-102-P201 (JET-201)

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

Sì

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .