An open-label, randomized, comparative phase II study including patients with CLDN18.2-positive unresectable locally advanced gastric cancer. To evaluate the objective response rate (ORR) and progression-free survival (PFS) of IMC002 compared with investigator's choice of treatment (ICT) as third-line or later therapy in patients with unresectable locally advanced or metastatic gastric or gastroesophageal junction adenocarcinoma with positive CLDN18.2 expression.
The age at randomization was at least 18 years old , and both men and women were eligible.
Radiographic progression or clinical worsening of symptoms during second-line treatment (if first-line treatment includes three drugs including taxanes (or anthracyclines), platinums, and fluorouracils, and the disease progression is assessed by the investigator, the patient may also be enrolled as an eligible subject; disease progression within 6 months after the end of neoadjuvant/adjuvant treatment is also considered a first-line treatment failure);
Tumor tissue specimens (primary or metastatic, archived or newly collected) from subjects are expected to be available and tested by a central laboratory, indicating positive histological staining for CLDN18.2 (defined as a positive tumor cell rate ≥40% and a staining intensity ≥2+) . If the subject has previously received other CLDN18.2-targeted therapies, tumor tissue specimens collected after that treatment are required to retest and evaluate CLDN18.2 expression levels .
The subject's expected survival period is ≥12 weeks.
Reproductive status: Female patients of childbearing age or male patients whose sexual partners are female patients of childbearing age are willing to take medically approved and highly effective contraceptive measures , such as intrauterine devices or condoms, from the time the informed consent is signed until 12 months after cell infusion (female patients of childbearing age include premenopausal women and women within 24 months of postmenopause).
The subjects must sign and date the written informed consent form.
Subjects must be willing and able to comply with the scheduled treatment regimen, laboratory tests, follow-up and other study requirements.
Pregnant and breastfeeding women.