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DP CD8 TIL

Phase 1

HNSCC | Monoclonal antibody | Oncology |Phio Pharmaceuticals Corp.|Last Updated: Jan 8, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLEDBiomarker
Total Trials1
Total Enrollment18

FDA Designations

No designations recorded

Clinical trial landscape

DP CD8 TIL · 1 trial · 6 indications

Phase 1 1
NCT05902520Adoptive Cell Therapy Using Cancer Specific CD8+ Tumor Infiltrating Lymphocytes in Adult Patients With Solid TumorsHNSCC
ACTIVE NOT_RECRUITING18 Analytics
PHASE1ACTIVE NOT_RECRUITING
Adoptive Cell Therapy Using Cancer Specific CD8+ Tumor Infiltrating Lymphocytes in Adult Patients With Solid Tumors
HNSCCUnlock trial analytics

Study Endpoints

Primary Endpoints

Safety of DP CD8 TIL
12 weeks after cell infusion, then per PI discretion

Frequency and severity of treatment-related adverse events as assessed by CTCAE v5.0 in participants treated with DP CD8 TIL adoptive cell therapy with and without ex vivo siRNA PD-1 modulation after lymphodepleting chemotherapy and followed by high-dose and low-dose IL-2.

Secondary Endpoints

Efficacy of DP CD8 TIL
1, 2, 3, 4, 8, and 12 weeks after cell infusion, then per PI discretion
Compare persistence of DP CD8 TIL and DP CD8 TIL KD in peripheral blood
1, 2, 4, 8, and 12 weeks after cell infusion, then per PI discretion
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
DP CD8 TILEXPERIMENTALAdoptive Cell Transfer of tumor infiltrating lymphocytes that were selected for tumor reactivity by the expression of cell surface proteins CD39 an CD103 and expanded in vitro. A suspension of 1-40 billion cells will be delivered one time by intravenous infusion.
DP CD8 TIL KDEXPERIMENTALAdoptive Cell Transfer of tumor infiltrating lymphocytes that were selected for tumor reactivity by the expression of cell surface proteins CD39 and CD103 and expanded in vitro in the presence of PH-762, a silencing RNA that reduces the expression of the checkpoint inhibitor PD-1. A suspension of 1-40 billion cells will be delivered one time by intravenous infusion.

Interventions

NameTypeDescription
DP CD8 TILBIOLOGICALintravenous infusion of T cell suspension
DP CD8 TIL KDBIOLOGICALintravenous infusion of T cell suspension
Low dose IL-2BIOLOGICALLow dose IL-2 delivered subcutaneously for 1, 2 or 3 weeks
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria * Participants must have signed and dated a current IRB/IEC approved written informed consent form in accordance with regulatory and institutional guidelines. Patients must have the ability to understand a written informed consent document, and the willingness to sign it. * Conse...

Countries:United States
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Recent Changes (Last 90 Days)

LOWMay 24, 2026NCT05902520studyFirstPostDate: changed

Frequently asked questions about DP CD8 TIL

What is DP CD8 TIL used for?

DP CD8 TIL is an investigational adoptive cell therapy being studied for use in head and neck squamous cell carcinoma (HNSCC). It is also being evaluated in other solid tumors including melanoma, gynecologic cancer, colorectal cancer, lung cancer, and urogenital cancer as part of a Phase 1 clinical trial.

How does DP CD8 TIL work?

DP CD8 TIL is a monoclonal antibody-based therapy that uses cancer-specific CD8+ tumor infiltrating lymphocytes. The treatment involves adoptive cell therapy, where these lymphocytes are collected and used to target and attack tumor cells in patients with solid tumors.

Who is developing DP CD8 TIL?

DP CD8 TIL is being developed by Phio Pharmaceuticals Corp., a biopharmaceutical company. The company is conducting a Phase 1 clinical trial to evaluate the safety and efficacy of this investigational therapy in patients with solid tumors.

What phase is DP CD8 TIL in?

DP CD8 TIL is currently in Phase 1 clinical development. It is an investigational drug that has not been approved by regulatory authorities. The ongoing trial is active but not recruiting participants, with an enrollment target of 18 patients.

What clinical trials is DP CD8 TIL in?

DP CD8 TIL is being studied in a single Phase 1 clinical trial with the identifier NCT05902520. The trial is titled 'Adoptive Cell Therapy Using Cancer Specific CD8+ Tumor Infiltrating Lymphocytes in Adult Patients With Solid Tumors' and is being conducted in the United States.

Is DP CD8 TIL the same as other TIL therapies?

DP CD8 TIL is a specific investigational therapy developed by Phio Pharmaceuticals Corp. It is not known to have alternative names. The therapy uses CD8+ tumor infiltrating lymphocytes and is being studied in a Phase 1 trial for solid tumors.