To evaluate the safety and tolerability of OP-724 in liver cirrhosis patients caused by HIV/HCV co-infection with hemophilia.

This trial is an uncontrolled, open-label, single-center phase I study in liver cirrhosis patients caused by human immunodeficiency virus (HIV)/hepatitis C virus (HCV) co-infection with hemophilia.

Liver cirrhosis patients due to co-infection of HIV and HCV with hemophilia who have a Child-Pugh classification of A or B are included. OP-724 is intravenously administered twice a week (4 hours) for 12 weeks as an administration schedule.

At 14 days before the administration of the first cycle, the dose planned for the first cycle will be administered once by continuous intravenous administration for 4 hours, and the safety and pharmacokinetics will be evaluated from the day of administration to the day after the administration. If an integrase inhibitor is used in combination as a key drug for antiretroviral drugs, its pharmacokinetics will be evaluated at the same time.

A dose escalation study with 2 doses (cohort 1: 140 mg/m2/4hr (starting dose), cohort 2: 280 mg/m2/4hr) will be conducted, and 3 patients in each cohort will be enrolled. Comprehensively investigate the safety and pharmacokinetic data after OP-724 administration, and evaluate the safety and tolerability of OP-724 administration.

Inclusion Criteria:

1. Hemophilia patients with liver cirrhosis caused by HIV/HCV co-infection that fall under the following 1) and 2).

1. HIV-RNA positive in serum or HIV antibody positive patients (the amount of HIV-RNA in the blood at the time of screening is less than 200 copies/mL, and the number of CD4 positive T lymphocytes can be maintained at 200/micro L or more).
2. HCV-RNA positive in serum or HCV antibody positive patients (regardless of the amount of viral and treatment).

2. Patients with Child-Pugh class A or B.

3. Patients who meet at least one of 1) to 3) for diagnosis of liver cirrhosis.

1. FIB-4 index value is 3.25 or higher.
2. Liver hardness value by FibroScan is 11.8 kPa or more.
3. Abdominal CT scan shows changes in liver shape and/or portal hypertension symptoms.

4. Patients who meet any of 1) to 3) for anti-HCV therapy.

1. Patients who have not reached the sustained virological response (SVR) * with the direct acting antivirals (DAA) therapy. * SVR shall be as SVR12 (persistent virus negative at 12 weeks after the end of administration).
2. Patients who have difficulty in performing DAA therapy.
3. Patients who have passed 24 weeks or more after achieving SVR* with DAA therapy or IFN therapy.

5. Patients with Performance Status 0-2.

6. Male patients aged 20 to under 75 at the time of obtaining written consent.

7. Patients who provided voluntary written consent to participate in this clinical trial.

Exclusion Criteria:

1. Patients who have cirrhosis due to causes other than HCV, and patients whose cause of cirrhosis is unknown.

2. Patients with esophagogastric varices who are judged to require treatment by endoscopy at the time of screening.

3. Patients with complication or with previous history of primary liver cancer (excluding patients who have been for more than 1 year after hepatoma removing operation or radiofrequency ablation etc.).

4. Patients with complication or with previous history of malignant tumor (within 3 years before screening).However, except for the following diseases: treated basal cell carcinoma, treated lung carcinoma in situ, or well-controlled superficial (non-invasive) bladder cancer.

5. Patients with active AIDS index disease requiring treatment.

6. Patients for whom HBV, HTLV-1 active viral infection or syphilis infection cannot be ruled out.

7. Serum creatinine level: Patients over 1.5 times the upper limit of the facility reference value.

8. Patients with complications with uncontrolled diabetes, hypertension or heart failure.

9. Patients with psychiatric disorders that may affect the conduct of clinical trial.

10. Patients with or have a history of serious allergies to contrast agent.

11. Patients who have not passed the following period at the time of registration and after the end of anti-HCV therapy.

    • IFN preparation 12 weeks after the last administration
    • Ribavirin preparation 16 weeks after the last administration
    • 16 weeks after the last administration of DAA

12. Patients whose dosage and administration have been changed within 12 weeks prior to registration if the following treatments have been given.

    • Liver cirrhosis
    • HIV

13. Patients with a history of drug or alcohol intoxication within 5 years prior to obtaining written consent, or patients with a history of drug or alcohol abuse within the last 1 year.

14. Patients who participated in other clinical trials within 30 days before obtaining written consent and used or had used investigational drugs or investigational medical devices.

15. Patients who have undergone liver transplantation or other organ transplantation (including bone marrow transplantation) and patients who have difficulty in intravenous administration.

16. Male patients who do not consent to contraception from the time of consent acquisition to 12 weeks after the end of study drug administration.

17. In addition, patients who are judged by the investigator or sub-investigator to be ineligible for this study.