XCancer

[177Lu]Lu-DOTA-EB-RGD2 Therapy in Patients With Recurrent High-grade Glioma

Description:

This is an investigator-initiated, Phase I clinical trial. It aims to evaluate the safety, tolerability, dosimetry, and preliminary anti-tumor activity of a novel radiopharmaceutical, \[177Lu\]Lu-DOTA-EB-RGD2, in patients with recurrent high-grade gliomas. Participants will receive the drug either via intravenous infusion or directly into the tumor cavity through a pre-implanted Ommaya reservoir (a subcutaneously placed device that allows direct access to the tumor cavity). The study employs a "3+3" dose-escalation design to determine the maximum tolerated dose (MTD). Adverse events, biodistribution, and tumor response (by MRI) will be assessed. Approximately 24 patients will be enrolled across two major Chinese medical centers: Beijing Tiantan Hospital and Peking Union Medical College Hospital.

Sponsor:

Beijing Cancer Hospital

Phase:

Early Phase 1

Contacts:

Deling Li, M.D. (CONTACT)

lideling@bjtth.org

Li'ao Wang, M.D. (CONTACT)

wangliao17@163.com

+86 15001171671

Deling Li, M.D. (PRINCIPAL_INVESTIGATOR)

Zhaohui Zhu (PRINCIPAL_INVESTIGATOR)

Government Study Link:

NCT07655869 - Click here to see study on

ClinicalTrials.gov

DOTA-EB-RGD2

Isotope(s):
Target(s):
  • αvβ3
Ligand Class: Peptides
Chelator: DOTA
Linker: EB (Evans Blue albumin-binding motif)

DOTA-EB-RGD2

Isotope(s):
Target(s):
  • αvβ3
Ligand Class: Peptides
Chelator: DOTA
Linker: EB (Evans Blue albumin-binding motif)
Inclusion
  • Adequate bone marrow and organ function confirmed by laboratory tests performed ≤ 14 days before first study treatment: Absolute neutrophil count (ANC) ≥ 1.5 × 10⁹/L; Platelet count ≥ 100 × 10⁹/L; Hemoglobin ≥ 10.0 g/dL; Serum creatinine ≤ 1.5 × upper limit of normal (ULN); Total bilirubin ≤ 1.5 × ULN; albumin ≥ 30 g/L; ALT and AST \< 3 × ULN in absence of liver metastases, or \< 5 × ULN if liver metastases present; Coagulation: activated partial thromboplastin time (APTT) ≤ 2 × ULN, international normalized ratio (INR) ≤ 1.5 (if not receiving anticoagulation therapy);
  • Participants receiving corticosteroids (e.g., dexamethasone) must be on a stable or decreasing dose ≤ 4 mg/day (or equivalent) for at least 7 days before start of study treatment.
  • 1. The participant must sign the informed consent form before participation.
  • Age ≥ 18 years.
  • Histologically confirmed glioblastoma (WHO classification) after surgical resection or biopsy.
Exclusion
  • 1. Receiving any other concurrent treatment for glioblastoma outside this study.
  • Refusal to use effective contraception during sexual intercourse from informed consent until 6 months after the last dose of study drug.
  • Inability to tolerate imaging procedures, repeated blood sampling, or poor venous access.
  • Pregnant or breastfeeding women, or women planning to become pregnant or breastfeed from the start of \[177Lu\]Lu-DOTA-EB-RGD2 treatment until 6 months after treatment.
  • Cardiac dysfunction, clinically significant cardiac disease history, or ECG abnormalities indicating a major safety risk, including:(1) Documented myocardial infarction, angina pectoris, cardiomyopathy, symptomatic pericarditis, or coronary artery bypass grafting within 6 months before enrollment.(2) Long QT syndrome, family history of idiopathic sudden death or congenital long QT syndrome, or any of the following: (a) risk factors for torsade de pointes (TdP) including uncorrected hypocalcemia, hypokalemia, hypomagnesemia, history of heart failure, or clinically significant/symptomatic bradycardia; (b) use of medications known to prolong the QT interval and/or cause TdP that cannot be discontinued or replaced with a safer alternative (e.g., within 5 half-lives or 7 days before study drug); (c) inability to determine the Fridericia-corrected QT interval (QTcF).(3) Clinically significant arrhythmia (e.g., ventricular tachycardia), complete left bundle branch block, high-grade atrioventricular block (e.g., bifascicular block, Mobitz type II, third-degree AV block).(4) Resting QTcF ≥ 450 ms (male) or ≥ 460 ms (female). (5) Left ventricular ejection fraction (LVEF) \< 50% by echocardiography. (6) Uncontrolled hypertension defined as systolic blood pressure ≥ 160 mmHg and/or diastolic blood pressure ≥ 100 mmHg, regardless of antihypertensive use.6\. Other malignancy within 5 years before study drug administration, except adequately treated carcinoma in situ of the cervix, basal or squamous cell skin cancer, localized prostate cancer after curative surgery, carcinoma in situ after curative surgery, or papillary thyroid cancer after curative surgery (hormonal therapy for non-metastatic prostate or breast cancer allowed).7\. Abnormal serum virology (HBsAg, T. pallidum antibody, HIV antibody, HCV antibody). Patients with untreated active hepatitis B who are willing to receive anti-HBV therapy during study treatment are allowed; patients with inactive hepatitis B are allowed; patients with inactive hepatitis C (HCV antibody positive but HCV RNA below lower limit of detection) are allowed.8\. Use of bevacizumab for glioblastoma or supportive care (e.g., edema reduction) within 60 days before start of study treatment.9\. Patients with disease progression within the first 12 weeks after completion of radiotherapy are excluded from recurrent disease trials.10\. Prior intracranial locoregional drug therapy before \[177Lu\]Lu-DOTA-EB-RGD2 treatment.11\. Active intracranial or intratumoral hemorrhage detected by CT/MRI. 12. Seizure within 14 days before start of study treatment; epilepsy or increased intracranial pressure uncontrolled by medication.13\. Grade 4 myelosuppression from prior anticancer therapy that has not recovered within 2 weeks, or grade 3 myelosuppression requiring \>6 weeks to recover.14\. Blood transfusion within 4 weeks before screening to meet eligibility criteria.15\. Known hypersensitivity or delayed allergic reaction to any component of \[177Lu\]Lu-DOTA-EB-RGD2 or similar drugs.16\. Severe disease of the cardiac, respiratory, central nervous system, renal, hepatic, or other organ systems that, in the investigator's opinion, may increase participant safety risk.17\. Active infection requiring intravenous antibiotics (bacterial, fungal, or viral) within 4 weeks before first dose, or any other uncontrolled active infection deemed clinically significant by the investigator.18\. History of drug or alcohol abuse within one year before screening, long-term drug use, or psychiatric illness that may affect compliance.19\. Participation in another investigational drug or device trial within 4 weeks before first dose.