Evaluate the Efficacy and Safety of the Prophylactic Use of PEG-rhG-CSF in Children With Hematological Malignancies

Inclusion Criteria:

1. Under the age of 18, no gender limit;
2. Children with hematological malignancies, leukemia or lymphoma, diagnosed by bone marrow pathology or cytology;
3. The prophylactic use of PEG-rhG-CSF or rhG-CSF after chemotherapy is intended to prevent neutropenia, and the chemotherapy regimen must meet the interval between two chemotherapy sessions at least 12 days;
4. The effect of chemotherapy in leukemia patients was complete remission, while that in lymphoma patients was complete remission or partial remission;
5. The expected survival time is more than 8 months;
6. Liver and kidney function: Liver function: total bilirubin (TBIL), alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 3 times the upper limit of normal value, or≤5 times the upper limit of normal value when there is liver metastasis; renal function test: serum creatinine (Cr) ≤ 1.5 times the upper limit of normal value;
7. Eastern Cooperative Oncology Group(ECOG) performance status(PS) \<2;
8. The subjects had good mental consciousness, and the subject's legal guardian must sign an informed consent form;
9. Researchers believe that the subject can benefit;

Exclusion Criteria:

1. Severe internal organ dysfunction;
2. Those who used other test drugs of the same kind or accepted other clinical trials within 4 weeks before enrollment;
3. Allergy to PEG-rhG-CSF, rhG-CSF and other preparations or proteins expressed by Escherichia coli;
4. Researchers determine unsuited to participate in this trial.