A Phase 2b Clinical Study of JDB0131 Benzenesulfonate Tablets

Inclusion criteria

• Age: 14 years through 65 years of age, male or female
• Weight: 40kg ≤ weight ≤ 90kg
• Patients with clinically confirmed pulmonary tuberculosis, Drug Susceptibility Testing (DST) results confirmed to be at least rifampicin-resistant, molecular or phenotypic DST results within 3 months before enrollment can be received
• Sputum acid-fast bacilli smear is positive (≥2+ once or 1+ twice at least)
• Patients who are currently taking anti-tuberculosis treatment or using drugs with anti-tuberculosis effects agree to stop all anti-tuberculosis drug treatment and complete a 7-day washout period
• Women of reproductive age must agree to use highly effective contraceptive measures throughout the study and for at least 6 months after discontinuation of the drug. Male participants whose partners are women of reproductive age must agree to use appropriate contraceptive methods throughout the study and for at least 6 months after discontinuation of the drug (see protocol Appendix 1)
• Fully understand the purpose and requirements of this trial, voluntarily sign the written informed consent and agree to abide by the relevant provisions of the informed consent

Exclusion criteria

• Those who cannot take delamanid, bedaquiline, or linezolid for various reasons
• Take delamanid, bedaquiline, or linezolid for more than 1 month (can be enrolled if evidence of no resistance to the above drugs is provided)
• Hematogenously disseminated pulmonary tuberculosis or severe extrapulmonary tuberculosis as determined by the investigator; or patients with pulmonary tuberculosis who are assessed by the investigator to be likely to require surgical treatment within 8 weeks
• History of torsades de pointes or risk factors, including a personal or family history of long QT syndrome (LQTS), persistent hypothyroidism, or bradycardia
• Anyone with any of the following cardiovascular diseases or other conditions within 6 months before enrollment:

• Myocardial infarction;
• Heart surgery or coronary revascularization (coronary artery bypass grafting/percutaneous transluminal coronary angioplasty);
• Unstable angina;
• Congestive heart failure (New York Heart Association functional class III or IV);
• Transient ischemic attack or severe cerebrovascular disease.
• Peripheral neuropathy CTCAE grade 3 or 4; Grade 1 or 2 peripheral neuropathy that the investigator judges may progress/worsen during the study; Patients with optic neuritis
• History of gastrointestinal surgery or resection that may affect the absorption and/or excretion of oral medications
• Patients who are considered by the investigator to be unsuitable for this trial due to unstable or severe cardiovascular, renal, hepatic, blood, tumor, endocrine metabolic, psychiatric or rheumatic diseases
• History of alcohol dependence or drug abuse within 6 months before screening, the investigator believes that it may affect the safety of the participants and affect the trial compliance
• Patients who have used other clinical trial investigational drugs within 3 months before administration
• Concomitant take drugs that cause bone marrow suppression
• Concomitant take serotonin reuptake inhibitors, tricyclic antidepressants, serotonin, serotonin receptor agonists, and other drugs
• Concomitant take drugs that prolong the QT interval, such as quinidine, procainamide, amiodarone, sotalol, etc.
• Chronic systemic corticosteroid therapy, cumulative take for more than 4 weeks within 3 months before enrollment
• Allergic to any investigational drug or related substance as confirmed by the researcher's clinical judgment
• Women who have a positive pregnancy test during screening or are breastfeeding
• Patients with hepatitis B virus (HBV) positive results (HBsAg, HBeAg, and HBcAb); positive hepatitis C virus (HCV) antibodies and aspartate aminotransferase (AST) or alanine aminotransferase (ALT) levels >3 times the upper limit of normal; positive Human Immunodeficiency Virus (HIV) antibody test; positive syphilis antibody test and active syphilis
• Laboratory tests show any of the following:

• Hemoglobin < 80 g/L;
• platelets < 75 ✕ 109 /L;
• Aspartate aminotransferase (AST) > 3 times the upper limit of normal;
• Alanine aminotransferase (ALT) > 3 times the upper limit of normal;
• Serum total bilirubin (TBIL) > 2 times the upper limit of normal;
• Serum creatinine (Cr) > 1.5 times the upper limit of normal;
• Serum amylase > 2 times the upper limit of normal.
• The following abnormalities were found in the electrocardiogram (ECG):

• At least twice QTcF intervals > 450 ms (male) or > 470 ms (female);
• Pathological Q waves (defined as >40 ms or deep >0.4-0.5mV);
• ECG suggests preexcitation syndrome;
• ECG suggests left bundle branch block or right bundle branch block; or second or third degree heart block;
• Intraventricular conduction delay with QRS duration >120ms;
• Bradycardia with a sinus rate < 50 bpm.
• In the investigator's judgment, any condition that affects the subject's compliance with the study protocol, or any serious medical or psychological condition that may affect the interpretation of efficacy and safety data, or any condition that may affect the subject's safety when participating in the trial