KJ-TFC-004 Drug-drug Interaction Study

Study Overview
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Brief Summary
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To assess the pharmacokinetic Interaction between Dorzolamide and Brimonidine in healthy male subjects.

Detailed Description
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Clinical trial to evaluate the influence of drug and drug-drug interactions of Brimonidine and Dorzolamide co-administration on the pharmacokinetics of Brimonidine and pharmacokinetics of Dorzolamide in healthy volunteers

Official Title
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A Randomized, Open-label, 2-period, Parallel Group, Multiple-dose Study to Evaluate the Drug-drugs Interaction Between Dorzolamide and Brimonidine in Healthy Korean Male Volunteers

Conditions
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Glaucoma, Eye Diseases, Ocular Hypertension

Intervention / Treatment
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* Drug: [A]
* Drug: [B]
* Drug: [A]+[B](1)
* Drug: [A]+[B](2)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Healthy male adults aged between 19 and 50 during screening period BMI more than 18kg / m2 and less than 30kg / m2 and weight more than 55kg Signed the informed consent form prior to study participation. Exclusion Criteria: Presence of medical history or a concurrent disease that may interfere with treatment and safety assessment or completion of this clinical study, including clinically significant disorders in kidney, liver, cardiovascular system, respiratory system, endocrine system, or neuropsychiatric system.

Ages Eligible for Study
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Minimum Age: 19 Years
Maximum Age: 50 Years

Sexes Eligible for Study
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Male

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: [A]→[A]+[B]<br>Period 1 : At each dosing of Treatment A eye drops is administered for 8days Period 2 : At each dosing of Treatment A + Treatment B eye drops is administered for 92days | Drug: [A]<br>* One eye drop(about 40ul) / Day1   Day8 / BID<br>* Other names: Brimonidine , Timolol;Drug: [A]+[B](1)<br>* One eye drop(about 40ul) / Day9   Day100 / BID<br>* Other names: Brimonidine , Timolol , Dorzolamide;|
| Experimental: [B]→[A]+[B]<br>Period 1 : At each dosing of Treatment B eye drops is administered for 92days Period 2 : At each dosing of Treatment A + Treatment B eye drops is administered for 8days | Drug: [B]<br>* One eye drop(about 40ul) / Day1   Day92 / BID<br>* Other names: Dorzolamide;Drug: [A]+[B](2)<br>* One eye drop(about 40ul) / Day93   Day100 / BID<br>* Other names: Brimonidine , Timolol , Dorzolamide;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Plasma concentration of Brimonidine and Dorzolamide | Group 1 Brimonidine Period 1 : 1d 0h,7d 0h,7d 12h,8d 0h(pre-dose), 8d 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 8, 12 h post-dose (Total 15 Point) Period 2 : 9d 0h,23d 0h,37d 0h,51d 0h,65d 0h,79d 0h,93d 0h,99d 0h,99d 12h, 100d 0h(pre-dose),100d 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 8, 12 h post-dose (Total 21Point) Dorzolamide Period 2 : 9d 0h,23d 0h,37d 0h,51d 0h,65d 0h,79d 0h,93d 0h,99d 0h,99d 12h,100d 0h (pre-dose), 100d 0.25,0.5,0.75,1,1.5,2,2.5,3,4,8,12 h post-dose (Total 21Point) Group 2 Brimonidine Period 2 : 93d 0h,99d 0h,99d 12h,100d 0h(pre-dose),100d 0.25, 0.5, 0.75, 1, 1.5,2,2.5,3,4,8,12h post-dose (Total 15Point) Dorzolamide Period 1 : 1d 0h, 15d 0h, 29d 0h, 43d 0h, 57d 0h, 71d 0h, 85d 0h, 91d 0h, 91d 12h, 92d 0h (pre-dose), 92d 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 8, 12 h post-dose (Total 21Point) Period 2 : 93d 0h, 99d 0h, 99d 12h, 100d 0h (pre-dose), 100d 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 8, 12 h post-dose (Total 15Point) | pre- and post dose of Brimonidine and Dorzolamide administration] | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Trough concentration of Dorzolamide and N-Desethyl-Dorzloamide | Group 1 Brimonidine Period 1 : 1d 0h,7d 0h,7d 12h 8d 0h (pre-dose),8d 0.25,0.5,0.75,1,1.5,2,2.5,3, 4,8,12 h post-dose (Total 15Point) Period 2 : 9d 0h,23d 0h,37d 0h,51d 0h,65d 0h,79d 0h,93d 0h,99d 0h,99d 12h,100d 0h (pre-dose),100d 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 8, 12h post-dose (Total 21Point) Dorzolamide Period 2 : 9d 0h,23d 0h,37d 0h,51d 0h,65d 0h,79d 0h,93d 0h,99d 0h,99d 12h,100d 0h (pre-dose), 100d 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 8, 12h post-dose (Total 21Point) Group 2 Brimonidine Period 2 : 93d 0h,99d 0h,99d 12h,100d 0h (pre-dose),100d 0.25, 0.5, 0.75, 1, 1.5,2,2.5,3,4,8,12h post-dose (Total 15Point) Dorzolamide Period 1 : 1d 0h,15d 0h,29d 0h,43d 0h,57d 0h,71d 0h,85d 0h,91d 0h, 91d 12h,92d 0h(pre-dose), 92d 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 8, 12h post-dose (Total 21Point) Period 1 : 93d 0h,99d 0h,99d 12h,100d 0h (pre-dose), 100d 0.25, 0.5, 0.75, 1, 1.5,2,2.5,3,4,8,12h post-dose (Total 15Point) | pre- and post dose of Dorzolamide and Dorzloamide administration] |