An Exploratory Study of Herombopag for Thrombocytopenia Induced by Chemotherapy Combined With Immunotherapy in NSCLC

Inclusion Criteria:

1. The patients signed the informed consent and voluntarily joined the study;
2. Age 18-75 years old, male or female;
3. Patients with stage IIIb-IV non-small cell lung cancer diagnosed by histopathology or cytology, who have received and will continue to receive carboplatin-based chemotherapy combined with pemetrexed or nab-paclitaxel, combined with immune checkpoint inhibitors ( ICIs) treatment;
4. The investigator determined that the patient could receive hetrombopag administration;
5. Thrombocytopenia of grade 2 or above occurred in the last chemotherapy cycle, defined as platelet count (PLT) ≤ 75×109/L;
6. The values of laboratory tests performed for screening shall meet the following criteria:

1\) Blood routine examination: a) Hemoglobin (HB) ≥ 90 g/L; b) Absolute neutrophil count (ANC) ≥ 1.5×109/L; c) Platelet count (PLT) ≥ 80×109/L; 2) Biochemical tests: a) AST and ALT ≤ 3 times ULN (if there is tumor liver metastasis, ≤ 5 times ULN); b) TBiL ≤ 2 times ULN; c) Cr ≤ 2 times ULN, or creatinine clearance (CrCL) ≥60 mL/min (Cockcroft-Gault formula); 7. Life expectancy at screening ≥12 weeks; 8. ECOG: 0-1; 9. The main organ functions are normal, and there are no serious complications;

Exclusion Criteria:

1. pregnant or breastfeeding women;
2. Inability to understand the research nature of the research or to obtain informed consent;
3. The investigator judges other circumstances that are not suitable for inclusion in the study;
4. Thrombocytopenia caused by other causes other than those caused by chemotherapy or immunotherapy (such as chronic liver disease, sepsis, disseminated intravascular coagulation, immune thrombocytopenia, etc.);
5. Have unstable angina pectoris, congestive heart failure, uncontrolled hypertension, uncontrolled arrhythmia or recent (within 1 year of screening) history of myocardial infarction;
6. Those with a history of blood disease or tumor bone marrow infiltration;
7. Those who received concurrent radiotherapy and those who received pelvic radiotherapy in the past;
8. Arterial or venous thrombotic events within the past 6 months;
9. There are currently uncontrollable infections.