Phase II Trial of SK3530 in Erectile Dysfunction

SK chemicals

Status and phase

Terminated

Phase 2

Conditions

Male Erectile Dysfunction

Treatments

Drug: SK3530

Study type

Interventional

Funder types

Industry

Identifiers

NCT00351065

SK3530_II_2004

Details and patient eligibility

About

This study was designed to evaluate the efficacy and safety of the SK3530 tablet and to find the optimal dose and dosage schedule after oral administration to patients with erectile dysfunction.

Full description

Double-blind, Placebo-controlled, randomized, parallel group, fixed dose, multi-center dose-finding study.

The patients voluntarily signed the informed consent form of the clinical study and underwent a screening. After completing the four-week run-in period, they were randomly assigned to either a placebo group or one of the three SK3530 groups: 50mg, 100mg, and 150mg. The study was conducted in a double-blind manner. A different dose of SK3530 was administered to the subjects depending on the assigned treatment group for 8 weeks. Patient's visit took place at week 4 and week 8 after randomization and at 6 or 7days after end of study.

Sex

Male

Ages

19 to 70 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Male, aged 19 to 70, suffering from erectile dysfunction for at least the past six months.

Definition of erectile dysfunction: "the inability to attain and/or maintain penile erection sufficient for satisfactory sexual performance."

Subjects who had a stable, heterosexual relationship with a single partner.
In the case of the sex partner being of childbearing potential age, the partner having consented to use a medically reliable contraceptive such as the pill, injection, or intrauterine device throughout the whole study period. Not applicable if the sex partner was surgically sterilized, underwent hysterectomy, or was one of the cases that were assessed as acceptable by an investigator.
Subjects who are eligible for study subjects in the screening test.
Subjects who attempted sexual intercourse four times or more but failed at least 50% of the attempts or more during the four-week run-in period
Subjects who had 5~22 scores in the IIEF EF domain during the four-week run-in period
Subjects who voluntarily decided to participate in the study and sign the informed consent form

Exclusion criteria

Subjects who had spinal injury or radical prostatectomy
Subjects who has anatomical deformities of penis (e.g. severe penile fibrosis, Peyronie's disease)
Subjects who are diagnosed as primary hypoactive sexual desire
Erectile dysfunction due to neurogenic or endocrine disorders such as hyperprolactinemia, low testosterone, etc.

Hyperprolactinemia: blood prolactin level ≥ 3 X upper limit of normal Low testosterone: blood total testosterone level < lower limit of normal

Subjects who has major psychiatric disorder (including major depression or schizophrenia), and significant neurology disorders (such as neurovascular disorder, etc.) that is not well controlled on treatment
Known history of alcoholism or substance abuse.
Hepatic and renal disease Hepatic disease: GOT, GPT ≥ 3 X upper limit of normal Renal disease: blood creatinine ≥ 2.5mg/dl
Currently uncontrolled diabetes mellitus (HbA1C>12%)
Untreated proliferative diabetic retinopathy
History of stroke, transient ischemic attacks, myocardial infarction, unstable angina, life-threatening arrhythmia, or coronary artery bypass graft surgery within the previous six months
History of Heart failure of NYHA Class III or IV, or NYHA Class II within the previous six months.
Hypotension (a resting sitting blood pressure <90/50 mmHg) or uncontrolled malignant hypertension (a resting sitting blood pressure >170/100mmHg)
A blood disease that might cause a priapism, such as sickle cell disease, multiple myeloma, or leukemia
Known history of retinitis pigmentosa
History of serious intestinal bleeding disorder within the past year
Subjects who had been prescribed Viagra®, Cialis®, Levitra®, intracavernosal injection or other medication to treat erectile dysfunction within the one week prior to screening.
Subjects who are taking one of the following:
- Nitrates/Nitric oxide (NO) donors (e.g. nitroglycerin, isosorbide mononitrate, isosorbide dinitrate, amyl nitrate/nitrite, sodium nitroprusside)
  - Anticoagulant (except for anti-platelet agent)
    - Medicines affecting on CYP3A4 metabolism (e.g. erythromycin, itraconazole, ketoconazole, ritonavir, saquinavir, amprenavir, indinavir, nelfinavir, cimetidine)
      - Androgens (e.g. testosterone) or Anti-androgens
        
        Trazodone
Known allergic hypersensitivity to other PDE-5 inhibitors such as Viagra®, Cialis®, Levitra®
Known no responder to previous treatment with Viagra®, Cialis® or Levitra®
Subjects who had taken other clinical trial medicine (including a placebo treatment) within the previous 30 days.
Subjects who are unable or unwilling to keep a patient diary
Subjects who illiterate or unable to understand questionnaires or a patient diary
Subjects who have any other clinical condition, which would interfere with the assessment of study results, in the opinion of the investigator