Low-dose Gemcitabine and Cisplatin and PD-1/PD-L1 Antibody Therapy in Intrahepatic Cholangiocarcinoma

Sun Yat-sen University

Status and phase: Not yet enrolling; Phase 2

Conditions: Chemotherapy Effect; Immunotherapy; Intrahepatic Cholangiocarcinoma

Treatments: Drug: Low-dose Gemcitabine and Cisplatin Chemotherapy plus PD-1/PD-L1Antibody

Study type: Interventional

Funder types: Other

Identifiers

NCT06567600

ZSSY-2407

Details and patient eligibility

About

In this phase 2 study, researchers aimed to evaluate the efficacy and safety of low-dose gemcitabine and cisplatin chemotherapy and the immune checkpoint inhibitor PD-1/PD-L1 antibody in patients with advanced and unresectable intrahepatic cholangiocarcinoma.

Full description

More and more studies suggest that low-dose chemotherapy has the ability to reshape the tumor microenvironment and promote tumor immunotherapy in a variety of tumors, supporting the rationality of combining low-dose chemotherapy with immunotherapy to effectively treat tumors with low T cell infiltration. More than half of intrahepatic cholangiocarcinomas are non-inflammatory "cold tumors", and their unique immunosuppressive microenvironment is one of the reasons for the poor response rate to immunotherapy. Low-dose chemotherapy can transform "cold" tumors with low immunogenicity and poor immune cell infiltration into "hot" tumors with immune responsiveness and sufficient immune cell infiltration, enhance the effect of ICIs on tumor cells, and minimize systemic toxicity, thus preserving a "therapeutic window" for combined immunotherapy/targeted therapy. Preclinical and clinical studies have shown that it is necessary to study the optimal dose of chemotherapeutic drugs in combination therapy. In combination therapy, long-term, adequate doses of chemotherapeutic drugs may be unnecessary because this will not only lead to more severe toxicity, but also damage rather than enhance anti-tumor immunity.

To determine the efficacy and safety of low-dose chemotherapy combined with PD-1/PD-L1 inhibitors in the treatment of patients with advanced intrahepatic cholangiocarcinoma, we designed an open-label, prospective, multicenter, single-arm clinical study of low-dose gemcitabine + cisplatin combined with PD-1/PD-L1 inhibitors in the treatment of patients with advanced intrahepatic cholangiocarcinoma.

Enrollment: 43 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Age ≥ 18 years old, male or female;
2. Histopathologically confirmed intrahepatic cholangiocarcinoma;
3. TNM Staging≥Stage II (American Joint Committee on Cancer Prognostic Groups)
4. Presence of at least one measurable lesion assessed using the Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST version 1.1);
5. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
6. Child-Pugh score ≤ 7;
7. Adequate organ function (neutrophil count of ≥1.5×10^9 cells/L, hemoglobin concentrations of ≥90 g/L, platelet cell count of ≥100×10^9 cells/L, bilirubin ≤1.5×ULN, Alanine aminotransferase (ALT) and Aspartate aminotransferase (AST) ≤ 5×ULN, serum creatinine ≤ 1.5 x ULN, Thyroid stimulating hormone (TSH) ≤ 1 x ULN;
8. The patient must be required to sign an informed consent form;

Exclusion criteria

1. Patients who have received previous treatment with interventional therapy, radiotherapy, ablation, chemotherapy, targeted therapy, immunotherapy (PD-1, PD-L1, CLTA-4 antibody, etc), or surgery within the last 2 months;
2. Patients with other malignant tumors within the last 5 years, except for cured non-melanoma skin cancer, cervical carcinoma in situ, and papillary thyroid carcinoma;
3. Active tuberculosis infection. Patients with active tuberculosis infection within 1 year prior to enrollment; had a history of active tuberculosis infection more than 1 year before enrollment, did not receive formal anti-tuberculosis treatment or tuberculosis is still active;
4. Active infection requiring systemic therapy;
5. Human immunodeficiency virus (HIV) positive;
6. Have an active, known, or suspected autoimmune disease. Subjects who require only hormone replacement therapy for hypothyroidism and skin diseases that do not require systemic therapy may be enrolled;
7. Suffering from high blood pressure, and can not be well controlled by antihypertensive drugs (systolic blood pressure ≥140mmHg or diastolic blood pressure ≥90mmHg);
8. Abnormal blood coagulation (INR >1.5, or PT>ULN+4s, or APTT >1.5 x ULN), with a bleeding tendency or receiving thrombolytic or anticoagulant therapy;
9. Pregnant or lactating women;
10. Participated in other trials within the last 4 weeks;
11. Has a history of allergy to platinum;
12. Other factors that may influence the safety of the subject or the compliance of the test by the investigator. Serious illnesses (including mental illness), severe laboratory tests, or other family or social factors that require combined treatment.

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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43 participants in 1 patient group

Low-dose Gemcitabine and Cisplatin Chemotherapy plus PD-1/PD-L1Antibody

Experimental group

Description:

Low-dose Gemcitabine and Cisplatin Chemotherapy: Gemcitabine 500 mg/m2 Cisplatin 12.5 mg/m2 on day 1 and day 8 of each 21-day cycle for up to eight cycles PD-1/PD-L1Antibody: Pembrolizumab 200mg on day 1 of each 21-day cycle Durvalumab 1500 mg on day 1 of each 21-day cycle After completion of gemcitabine and cisplatin, 200mg of Pembrolizumab or 1500 mg of Durvalumab may administer once every 3 or 4 weeks until clinical or imaging (per RECIST v1.1) disease progression or until unacceptable toxicity, withdrawal of consent, or any other discontinuation criteria were met.

Treatment:

Drug: Low-dose Gemcitabine and Cisplatin Chemotherapy plus PD-1/PD-L1Antibody