HS-IT101 Injection in the Treatment of Advanced Melanoma

Single Arm, Phase I Clinical Study of HS-IT101 Injection in the Treatment of Advanced Melanoma

Single-arm, open-label,interventional study evaluating adoptive cell therapy (ACT) with autologous tumor-infiltrating lymphocyte (TIL) infusion (HS-IT101) after lymphodepletion preparative with fludarabine and cyclophosphamide regimen, followed by IL-2, for the treatment of patients with advanced melanoma.

Study Overview

• Status: Enrolling by invitation
• Conditions: Advanced Melanoma
• Intervention / Treatment: Drug: HS-IT101 Injection

Detailed Description

HS-IT101 is an adoptive cell transfer therapy that utilizes an autologous TIL manufacturing process, for the treatment of patients with advanced melanoma. The cell transfer therapy used in this study involves patients receiving lymphodepletion treatment with fludarabine and cyclophosphamide, followed by infusion of autologous TIL, then finnaly followed by the administration of a regimen of IL-2.

• Study Type: Interventional
• Enrollment (Estimated): 10
• Phase: Phase 1

Contacts and Locations

Study Locations

• China
  • BeiJing, China
    • Peking University Cancer Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Age between 18 and 75 years (inclusive).
2. Histologically or cytologically confirmed advanced, recurrent, or metastatic melanoma (excluding uveal melanoma) that has failed at least one prior line of standard systemic therapy. Subjects with BRAF V600 mutations must have failed BRAF-targeted therapy or been intolerant to such therapy due to toxicity. The necessity and appropriateness of targeted therapy shall be determined by the investigator based on the subject's clinical status.
3. At least one tumor lesion (not subjected to radiotherapy or local therapy within 28 days prior to sampling) must be available for autologous tumor-infiltrating lymphocyte (TIL) preparation, with a minimum tissue weight of ≥0.050 g.
4. At least one measurable lesion (per RECIST 1.1 criteria) must remain after sampling. This lesion must not have received prior radiotherapy or local therapy unless performed >28 days before tumor sampling and demonstrating clear progression.
5. ECOG performance status ≤1.
6. Life expectancy ≥3 months.

7. Adequate organ and bone marrow function at screening, defined as:

   Hematology:

   Absolute neutrophil count (ANC) ≥1.5×10⁹/L; Platelet count (PLT) ≥90×10⁹/L; Hemoglobin (HGB) ≥90 g/L (no transfusion or erythropoietin within 14 days).

   Liver function:

   ALT/AST ≤2.5×ULN (≤5×ULN for liver metastases); Total bilirubin (TBil) ≤1.5×ULN (≤3×ULN if Gilbert's syndrome is confirmed).

   Renal function:

   Serum creatinine (Cr) ≤1.5×ULN or creatinine clearance (Ccr) ≥60 mL/min (Cockcroft-Gault formula).

   Coagulation:

   Activated partial thromboplastin time (APTT) ≤1.5×ULN; International normalized ratio (INR) and prothrombin time (PT) ≤1.5×ULN.

8. Cardiac function criteria:

   Left ventricular ejection fraction (LVEF) ≥50% by echocardiography; No clinically significant arrhythmias requiring treatment; QTcF interval ≤470 ms (calculated using Fridericia's formula: QTcF = QT/(RR⁰.³³), where RR = 60/heart rate. If initial result is abnormal, repeat twice at 5-minute intervals; use mean value for eligibility); Baseline oxygen saturation >91% in room air.

9. Prior treatment-related toxicities resolved to CTCAE v5.0 Grade ≤1 (excluding alopecia or other toxicities deemed non-risk by the investigator) before tumor sampling.
10. Agreement to use effective non-pharmacologic contraception from informed consent signing until 1 year post-TIL infusion.
11. Willing and able to comply with study visits/procedures, with full understanding of the trial and provision of written informed consent.

Exclusion Criteria:

1. History of severe allergic reactions to medications used in the study (including but not limited to cyclophosphamide, fludarabine, IL-2, gentamicin, amphotericin B, or components of TIL infusion).

2. Uncontrolled clinical conditions, including:

   • Poorly controlled hypertension (resting systolic blood pressure ≥160 mmHg or diastolic blood pressure ≥100 mmHg despite medication);
   • Congestive heart failure (NYHA Class III/IV).

3. Within 6 months prior to screening:

   Deep vein thrombosis, pulmonary embolism, myocardial infarction, severe/unstable arrhythmia, angina pectoris, percutaneous coronary intervention, acute coronary syndrome, coronary artery bypass graft, cerebrovascular accident, transient ischemic attack, or cerebral embolism.

4. Active autoimmune diseases requiring systemic therapy during the study period (except: eczema, vitiligo, psoriasis, alopecia, or Graves' disease not requiring systemic treatment in the past 2 years; hypothyroidism managed with thyroid hormone replacement; type 1 diabetes managed with insulin; or autoimmune conditions deemed non-recurrent by the investigator).
5. History of organ transplantation or hematopoietic stem cell transplantation.

6. Use of immunosuppressive drugs (e.g., corticosteroids) within 4 weeks prior to tumor sampling, or concurrent conditions requiring immunosuppressive therapy during the study. Exceptions:

   • Physiological-dose glucocorticoids (≤12 mg/m²/day hydrocortisone or equivalent);
   • Topical or intranasal steroids.
7. Systemic anticancer therapy within 4 weeks prior to preconditioning (including investigational drugs; applies to agents with a half-life <4 weeks [whichever is shorter]) or plans to participate in other interventional trials during the study.

8. Acute/chronic infections, including:

   • HIV positivity, syphilis antibody positivity, or active hepatitis B/C (subjects with HBsAg/HBeAg positivity are eligible if HBV DNA is below the lower limit of detection [LLOD]; HCVAb-positive subjects are eligible if HCV RNA is below LLOD);
   • Active infections requiring systemic therapy or active tuberculosis.
9. Major organ surgery, significant trauma within 4 weeks prior to screening, or planned elective surgery during the trial.
10. Surgical complications or delayed wound healing (investigator-assessed to increase risks of preconditioning, TIL therapy, or IL-2 administration).
11. Other primary malignancies diagnosed within 5 years prior to screening (exceptions: radically treated basal cell carcinoma, squamous cell carcinoma, or carcinoma in situ).
12. Severe respiratory diseases (e.g., interstitial lung disease, severe COPD, pulmonary insufficiency, symptomatic bronchospasm).
13. Gastrointestinal bleeding requiring surgery, intestinal ischemia, or perforation.
14. Leptomeningeal metastasis or uncontrolled/untreated CNS metastases (excludes asymptomatic CNS metastases stable for ≥4 weeks post-treatment without corticosteroids/anticonvulsants).
15. Prior treatment with cell therapy products of the same class.
16. Pregnancy, lactation, or refusal to use contraception.
17. Psychiatric disorders, substance abuse, or other investigator-determined contraindications.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: HS-IT101 monotherapy; TIL Injection administered by intravenous infusion over 30-60 minutes.	Drug: HS-IT101 Injection; Adoptive transfer of 5x10^9-6x10^10 autologous TIL to patients i.v. in 30-60 minutes.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Adverse Events (AE)	To characterize the safety profile of HS-IT101 in patients with advanced solid tumor as assessed by incidence of adverse events	12 months
Objective Response Rate (ORR)	To evaluate the efficacy of HS-IT101 in patients with advanced solid tumor, based on the objective response rate (ORR) as assessed by the Independent Review Committee (IRC) per RECIST v1.1	Up to 36 months
Time-to-response (TTR)	To evaluate the efficacy of HS-IT101 in patients with advanced solid tumor by assessing the time-to-response (TTR) as assessed by the Investigator per RECIST v1.1	Up to 36 months
Overall Survival (OS)	To evaluate overall survival (OS) in patients with advanced solid tumor	Up to 36 months
Serious Adverse Events (SAE)	To characterize the safety profile of HS-IT101 in patients with advanced solid tumor as assessed by incidence of serious adverse events	12 months
Duration of Response (DOR)	To evaluate the efficacy of HS-IT101 in patients with advanced solid tumor by assessing the duration of response (DOR) as assessed by the Investigator per RECIST v1.1	Up to 36 months
Disease Control Rate (DCR)	To evaluate the efficacy of HS-IT101 in patients with advanced solid tumor, based on the disease control rate (DCR) as assessed by the Independent Review Committee (IRC) per RECIST v1.1	Up to 36 months
Progression-Free-Survival (PFS)	To evaluate progression-free-survival (PFS) in patients with advanced solid tumor	Up to 36 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Pharmacokinetic (PK) detection parameters for HS-IT101	Pharmacokinetic (PK) detection parameters for HS-IT101 injection include peripheral blood lymphocyte subsets and T-cell receptor (TCR) clonality.	Up to 6 months

Collaborators and Investigators

• Sponsor: Qingdao Sino-Cell Biomedicine Co., Ltd.
• Investigators: Principal Investigator: Jun GUO, MD, Peking University Cancer Hospital & Institute

Study record dates

Study Major Dates

• Study Start (Actual): July 10, 2025
• Primary Completion (Estimated): May 30, 2026
• Study Completion (Estimated): May 30, 2027

Study Registration Dates

• First Submitted: April 15, 2025
• First Submitted That Met QC Criteria: April 15, 2025
• First Posted (Actual): April 24, 2025

Study Record Updates

• Last Update Posted (Actual): August 14, 2025
• Last Update Submitted That Met QC Criteria: August 11, 2025
• Last Verified: July 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Neoplasms by Site; Neoplasms; Neoplasms by Histologic Type; Skin Diseases; Neuroectodermal Tumors; Neoplasms, Germ Cell and Embryonal; Neoplasms, Nerve Tissue; Neuroendocrine Tumors; Nevi and Melanomas; Skin Neoplasms; Melanoma
• Other Study ID Numbers: HS-IT101ST01-Ⅰ b

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No