CMOP Regimen and Chidamide in the Treatment of Newly Diagnosed Peripheral T-cell Lymphoma

Inclusion Criteria:

1. The patient understands the content of this study, voluntarily participates in the study, and signs the informed consent form (ICF);
2. Age: 18-80 years;
3. Expected survival time ≥ 3 months;
4. Histologically confirmed PTCL, one of the following subtypes:

   1. PTCL not otherwise specified (PTCL-NOS)
   2. Nodal T follicular helper (Tfh) cell lymphoma
   3. Other subtypes of PTCL that the researcher deems eligible for inclusion in the study;
5. At least one measurable or evaluable lesion that meets the Lugano2014 criteria: for lymph node lesions, the longest diameter should be \>1.5 cm, and for extranodal lesions, the longest diameter should be \>1.0 cm;
6. ECOG score 0-2 points;
7. Bone marrow function: neutrophil count ≥ 1.5×109/L, platelet count ≥ 75×109/L, hemoglobin ≥ 80 g/L (for patients with bone marrow involvement, the neutrophil count can be relaxed to ≥ 1.0×109/L, platelet count can be relaxed to ≥ 50×109/L, hemoglobin can be relaxed to ≥ 75 g/L);
8. Liver and kidney function: serum creatinine ≤ 1.5 times the upper limit of normal, AST and ALT ≤ 2.5 times the upper limit of normal (≤ 5 times the upper limit of normal for patients with liver involvement), and total bilirubin ≤ 1.5 times the upper limit of normal (≤ 3 times the upper limit of normal for patients with liver involvement).

Exclusion Criteria:

* 1\. Hypersensitivity to any study drug or its components; 2. Uncontrollable systemic diseases (such as advanced infection, uncontrolled hypertension, diabetes, etc.); 3. One of the following applies to cardiac function and disease:

  1. Long QT syndrome or QTc interval \>480 ms;
  2. Complete left bundle branch block, II or III degree atrioventricular block;
  3. Severe, uncontrolled arrhythmia requiring medication;
  4. New York Heart Association (NYHA) grade ≥ III;
  5. Left ventricular ejection fraction (LVEF) \<50%;
  6. A history of acute myocardial infarction, unstable angina, severe unstable ventricular arrhythmia, or other arrhythmias or clinically significant pericardial disease requiring treatment within the six months prior to recruitment or evidence of acute ischemic or active conduction system abnormalities on the electrocardiogram; 4. Active hepatitis B or C infection (hepatitis B surface antigen positive and hepatitis B virus DNA \> 1x104 copies/mL; hepatitis C virus RNA \> 1x104 copies/mL); 5. Human immunodeficiency virus (HIV) infection (HIV antibody positive); 6. Previously or currently diagnosed with other malignant tumors (except for non-melanoma skin basal cell carcinoma, breast/cervical carcinoma in situ, and other malignant tumors that have not been treated and effectively controlled within the past five years); 7. Central nervous system (CNS) lymphoma or a history of CNS lymphoma; 8. Pregnant or lactating women and childbearing patients who do not want to take contraceptive measures; 9. Other situations judged by the researcher to be unsuitable for participation in this study.