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Pharmaceutical Administration and Regulations in Japan - Nihs

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dose not exceed<strong>in</strong>g 1/100 of the<br />

dose express<strong>in</strong>g pharmacological<br />

effects or a dose of 100 µg/human,<br />

whichever is smaller, is adm<strong>in</strong>istered<br />

once to healthy subjects. The<br />

range of application is ma<strong>in</strong>ly low<br />

molecular weight compounds.<br />

3) Considerations for Individual Cl<strong>in</strong>ical<br />

Studies<br />

The follow<strong>in</strong>g important pr<strong>in</strong>ciples<br />

should be followed <strong>in</strong> plann<strong>in</strong>g the<br />

objectives, design, conduct, analysis <strong>and</strong><br />

report<strong>in</strong>g of a cl<strong>in</strong>ical study. Each item<br />

from the objectives to report<strong>in</strong>g should be<br />

def<strong>in</strong>ed <strong>in</strong> a written protocol before the<br />

study starts.<br />

3.1) Objectives<br />

The objective(s) of the study should be<br />

clearly stated. They may <strong>in</strong>clude<br />

exploratory or confirmatory<br />

characterization of the safety <strong>and</strong>/or<br />

efficacy <strong>and</strong>/or assessment of<br />

pharmacological, physiological or<br />

biochemical effects.<br />

3.2) Design<br />

The appropriate study design should<br />

be chosen to provide the desired<br />

<strong>in</strong>formation <strong>in</strong> consideration of the<br />

follow<strong>in</strong>g po<strong>in</strong>ts by referr<strong>in</strong>g to relevant<br />

cl<strong>in</strong>ical guidel<strong>in</strong>es:<br />

(1) Selection of subjects.<br />

<strong>Pharmaceutical</strong> <strong>Regulations</strong> <strong>in</strong> <strong>Japan</strong>:<br />

3.3) Conduct<br />

(2) Selection of control group.<br />

(3) Number of subjects.<br />

(4) Safety <strong>and</strong> efficacy variables.<br />

(5) Methods to m<strong>in</strong>imize bias<br />

(r<strong>and</strong>omization, bl<strong>in</strong>d<strong>in</strong>g, <strong>and</strong><br />

compliance).<br />

The study should be conducted<br />

accord<strong>in</strong>g to the pr<strong>in</strong>ciples described <strong>in</strong><br />

the General Considerations for Cl<strong>in</strong>ical<br />

Studies or <strong>in</strong> accordance with other<br />

pert<strong>in</strong>ent elements outl<strong>in</strong>ed <strong>in</strong> the GCP or<br />

other guidel<strong>in</strong>es related to cl<strong>in</strong>ical studies.<br />

Adherence to the study protocol is<br />

essential.<br />

3.4) Analysis<br />

The study protocol should cite a<br />

specified analysis plan that is appropriate<br />

for the objectives <strong>and</strong> design of the study.<br />

Methods of analysis of the primary<br />

endpo<strong>in</strong>ts <strong>and</strong> surrogate endpo<strong>in</strong>ts should<br />

be <strong>in</strong>cluded <strong>in</strong> the protocol. The results<br />

of the cl<strong>in</strong>ical study should be analyzed <strong>in</strong><br />

accordance with the plan prospectively<br />

stated <strong>in</strong> the protocol.<br />

3.5) Report<strong>in</strong>g<br />

Cl<strong>in</strong>ical study reports should be<br />

appropriately prepared <strong>in</strong> accordance with<br />

the Structure <strong>and</strong> Content of Cl<strong>in</strong>ical<br />

Study Reports (Notification No.335 of the<br />

Evaluation <strong>and</strong> Licens<strong>in</strong>g Division, PAB<br />

dated May 1, 1996: ICH E3).<br />

2011-3 - 90 -

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