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NCT Number: NCT07766317

Autologous Tumor Infiltrating Lymphocyte (TIL) GT201 Infusion.

This is a multicenter, single-arm phase 1/2 clinical trial to evaluate the safety and tolerability of GT201 as a monotherapy or in combination with anti-PD-1 therapy in patients with advanced solid tumors, and to evaluate the efficacy of this therapy.

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Key information

Age range

18 year–70 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1 / Phase 2

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Key eligibility criteria for inclusion in the study:

  • 1 Age 18~70 years old;
  • 2 Diagnosed with: Phase 1 part: Patients with advanced solid tumors who have failed all standard therapy, have no standard therapy, or are intolerant of standard therapy Phase 2a part: Patients with an advanced or metastatic solid tumor enrolled in one of three (3) indications selected for dose expansion based on Phase 1 safety and preliminary activity. Patients must have progressed on or after standard-of-care therapy, or for whom no suitable standard therapy is available;
  • 3 At least one lesion that is resectable for the preparation of autologous TIL cells;
  • 4 At least one measurable lesion that meets the definition of RECIST v1.1 after tumor sampling;
  • 5 Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1;
  • 6 Expected survival ≥ 12 weeks;
  • 7 Non-surgically sterilized women of reproductive age who agree to use at least one medically recognized method of contraception during the study treatment period and for 1 year after the end of the study treatment period; and must have a negative serum test at screening, prior NMA-LD and cell infusion.

Exclusion criteria

Subjects will be excluded from the study for one or more of the following conditions:

  • 1 Patients with spinal cord compression that has failed to resolve after surgery and/or radiotherapy (patients with clinical evidence that symptoms have resolved after surgery or radiation therapy for ≥ 1 week prior to surgical sampling are eligible for enrollment);
  • 2 Bleeding events within 3 months prior to screening
  • 3 Patients with arterio-venous thrombotic events that occurred within 3 months prior to screening
  • 4 Have interstitial pneumonia or active pneumonia that is clinically significant at screening, or other respiratory conditions that severely affect lung function;
  • 5 Patients who have a left ventricular ejection fraction (LVEF) < 45% or who are New York Heart Association (NYHA) Class grade > grade 2;
  • 6 Participants with ≥ 3 untreated central nervous system (CNS) metastases;
  • 7 Have any historical or active autoimmune disease requiring systemic steroids, or immunosuppressive therapy (> 10 mg/day of prednisone or equivalent);
  • 8 Malignant tumors other than the target indication within 5 years;
  • 9 The presence of refractory or intractable epilepsy, large amounts of pleural effusion, ascites, pericardial effusion, etc. that cannot be controlled by drugs, or other contraindications to IL-2 use;
  • 10 Patients with infectious diseases, will be excluded from the study; with some exceptions for HBV and HCV.
  • 11 Previous allogeneic bone marrow transplantation or solid organ transplantation;

Treatment and study plan

GT201

Biological

A tumor sample from individual participant is collected through a surgical resection for ex vivo manufacturing of GT201 TIL cell product.

IL-2 and PD-1

Biological

Participants tandemly receives a lymphodepleting regimen, GT201 TIL product, and IL-2. Some participants may also receive a PD-1 inhibitor following GT201 infusion

Primary outcomes

  1. To assess the safety of GT201 in the treatment of recurrent or metastatic solid tumors

    Time frame: Upto 2 years

    Incidence and severity of AEs will be graded per NCICTCAE v5.0 (Phase 1)

  2. To assess the safety of GT201 in the treatment of recurrent or metastatic solid tumors

    Time frame: Upto 2 years

    Incidence and severity of CRS and ICANS AE's will be graded per the ASTCT criteria (Phase 1)

  3. To assess the tolerance of GT201 and decide on the recommended Phase 2 dose.

    Time frame: Upto 2 years

    The safest combination will be used to determine recommended dose for Phase 2 (RP2D) (Phase 1)

  4. To assess the Objective Response Rate (ORR) of GT201 infusion in accordance with RECIST v1.1

    Time frame: Upto 2 years

    To evaluate the proportion of participants who have a confirmed complete response (CR) or partial response (PR) (Phase 2)

Secondary outcomes

  1. To assess efficacy of GT201 in the treatment of recurrent or metastatic solid tumors: Objective response rate (ORR)

    Time frame: Upto 2 years

    Proportion of participants achieving a Complete Response (CR) or Partial Response (PR) per RECIST v1.1 (Phase 1 and Phase 2)

  2. To assess efficacy of GT201 in the treatment of recurrent or metastatic solid tumors: duration of response (DOR)

    Time frame: Upto 2 years

    The duration from the first confirmed objective response per RECIST v1.1 to the first documentation of progressive disease (PD) or death from any cause (Phase 1 and Phase 2)

  3. To assess efficacy of GT201 in the treatment of recurrent or metastatic solid tumors: disease control rate (DCR)

    Time frame: Upto 2 years

    Proportion of participants achieving Complete Response (CR), Partial Response (PR), or Stable Disease (SD) per RECIST v1.1 (Phase 1 and Phase 2).

  4. To assess efficacy of GT201 in the treatment of recurrent or metastatic solid tumors: progression free survival (PFS)

    Time frame: Upto 2 years

    The time from GT201 infusion to the first documentation of progressive disease (PD) per RECIST v1.1 or death from any cause, whichever occurs first (Phase 1 and Phase 2)

  5. To assess efficacy of GT201 in the treatment of recurrent or metastatic solid tumors: overall survival (OS)

    Time frame: Upto 2 years

    The time from GT201 infusion to death from any cause (Phase 1 and Phase 2)

Other outcomes

  1. Evaluate the persistence of GT201 cells in the treatment of recurrent or metastatic solid tumors

    Time frame: Upto 2 years

    Conduct product related TCR clones by TCR repertoire analysis on peripheral blood (Phase 1 and Phase 2)

Study contacts

Contact information is provided by the study sponsor or research team.

Gritbio Study Team

CONTACT

[email protected]

440-414-3338

Sponsors and collaborators

Lead sponsor

Gritbio Medicine, Inc.

Industry

Registry information

Official study title

A Phase I/II Open-Label Clinical Study of Autologous Tumor Infiltrating Lymphocyte Infusion (GT201) in the Treatment of Advanced Solid Tumors

Acronym: GT201

Important dates

Study start
2026
Primary completion
2030
Study completion
2032
First posted
Aug 14, 2026
Registry last updated
Aug 14, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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