JAK1 Inhibitor Golidocitnib for the Treatment of Relapsed/Refractory Indolent T/NK-cell Lymphomas

Inclusion Criteria:

1. Age ≥ 18 years, with no restrictions on gender;
2. Histologically confirmed relapsed/refractory (R/R) indolent T/NK-cell; lymphoma that has failed at least one systemic therapy or is intolerant to such treatment and/or currently has no effective standard treatment options;
3. The patient meets the criteria for appropriate therapeutic indications;
4. ECOG performance status of 0-2;
5. Adequate organ function, defined as: Total bilirubin (TBIL) ≤ 1.5 × ULN; ALT and AST ≤ 2.5 × ULN; Blood urea nitrogen (BUN)/Urea and creatinine (Cr) ≤ 1.5 × ULN; Left ventricular ejection fraction (LVEF) ≥ 50%; Fridericia-corrected QT interval (QTcF): \< 450 ms for males, \< 470 ms for females;
6. An expected survival time of at least 3 months;
7. Male and female subjects of childbearing potential must agree to use effective contraception throughout the study period and for 6 months after the last dose of the investigational drug;
8. A washout period of ≥ 4 weeks since receiving any prior antitumor therapies (including radiotherapy, chemotherapy, hormone therapy, surgery, or molecular targeted therapy) before participating in this study;
9. The subject has not participated in any other clinical trial within 1 month prior to enrollment;
10. The subject agrees to and signs the informed consent form.

Exclusion Criteria:

1. Subjects who have previously used any JAK inhibitors;
2. Subjects with clinical conditions such as dysphagia, malabsorption, or other chronic gastrointestinal diseases that may interfere with compliance and/or absorption of the study drug;
3. Subjects with active viral, bacterial, or fungal infections requiring treatment (e.g., pneumonia);
4. Subjects with HBV or HCV infections, defined as HBsAg and/or HBcAb positivity and HBV DNA copy number ≥ the upper limit of normal (ULN), or acute or chronic active hepatitis C (HCV antibody-positive);
5. Subjects with a history of immunodeficiency, including those who are HIV-positive, or those with other acquired or congenital immunodeficiency diseases, a history of organ transplantation, or a history of allogeneic bone marrow or hematopoietic stem cell transplantation;
6. Subjects who have undergone autologous hematopoietic stem cell transplantation within 90 days prior to the first dose of study treatment;
7. Subjects with severe or uncontrolled cardiovascular diseases;
8. Subjects with severe concomitant diseases that pose a significant risk to patient safety or, in the investigator's judgment, may interfere with the completion of the study (e.g., uncontrolled hypertension, diabetes, or thyroid disorders);
9. Pregnant or breastfeeding female subjects, or baseline positive pregnancy test results in women of childbearing potential;
10. Subjects with a history of other malignancies diagnosed or treated within the past 5 years;
11. Any other conditions that, in the investigator's opinion, render the subject unsuitable for participation in the study.