A Pilot Study for Ginkgolides Meglumine Injection Skin Testing.

Study Overview
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Brief Summary
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This pilot study is designed to explore the optimal concentration and method of Ginkgolides Meglumine Injection skin testing and to evaluate the value of skin test in predicting any possible allergic reactions to Ginkgolides Meglumine Injection.

Detailed Description
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Subjects will be enrolled in one of three groups with different doses to receive skin prick testing. Then they may be arranged to receive intradermal, subcutaneous injection or intravenous tests with different doses.

Official Title
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A Pilot Study for Ginkgolides Meglumine Injection Skin Testing

Conditions
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Allergy

Intervention / Treatment
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* Drug: 0.1mg/ml Ginkgolides Meglumine Injection
* Drug: 1mg/ml Ginkgolides Meglumine Injection
* Drug: 5mg/ml Ginkgolides Meglumine Injection


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male and female between the ages of 18 and 70(inclusive)at the time of signing the Informed Consent Form （ICF）. Subjects meet any one of the following requirements No history of using any dugs containing bilobalide, Ginkgolide A, Ginkgolide B, Ginkgolide K (including Ginkgolides Meglumine Injection). History of using any dugs containing bilobalide, Ginkgolide A, Ginkgolide B, Ginkgolide K (including Ginkgolides Meglumine Injection), and no allergy. History of allergy to any dugs contain bilobalide, Ginkgolide A, Ginkgolide B, Ginkgolide K (including Ginkgolides Meglumine Injection). History of allergy to any other drugs. Willingness to participate in the study as evidenced by signing the informed consent form. Exclusion Criteria: Women in breastfeeding,menstrual or pregnancy period. Subjects are in the infectious disease, eczema, dermatitis, trauma,etc. Subjects meet any one of the following conditions Used β-blockers within 2 days prior to starting this study. Used H1 anti-histamines, imipramine, phenothiazine, Beta adrenaline etc. within 1 week prior to starting this study. Used short-acting glucocorticoids drugs within 1 week prior to starting this study. Topical used glucocorticoids drugs within 2 weeks prior to starting this study. Used long-acting glucocorticoids drugs within 4 weeks prior to starting this study Subjects are currently participating or have participated in any other clinical trials within the prior 1 month of signing the ICF. Subjects have a history of allergic shock. Subjects who are not suitable for this clinical trial at the discretion of the investigator.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 70 Years

Sexes Eligible for Study
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All

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: Diagnostic
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: 0.1mg/ml Ginkgolides Meglumine Injection<br>Injection, 0.1mg/ml. | Drug: 0.1mg/ml Ginkgolides Meglumine Injection<br> <br> |
| Experimental: 1mg/ml Ginkgolides Meglumine Injection<br>Injection, 1mg/ml. | Drug: 1mg/ml Ginkgolides Meglumine Injection<br> <br> |
| Experimental: 5mg/ml Ginkgolides Meglumine Injection<br>Injection, 5mg/ml. | Drug: 5mg/ml Ginkgolides Meglumine Injection<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The rate of allergic reaction and analyze all kinds of positive reactions after skin prick test with different doses of Ginkgolides Meglumine Injection. |  | 15-20 minutes after skin prick tests. | 
| The rate of allergic reaction and analyze all kinds of positive reactions after using intradermal tests of different doses of Ginkgolides Meglumine Injection. |  | 15-20 minutes after intradermal tests. | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The specificity and sensitivity with the different doses. | Specificity (SPC) =TN/ (FP+TN); Sensitivity=TP/ (TP+FN). TP (true positive); TN (true negative); FP (false positive); FN (false negative). TP(true positive); TN(true negative); FP(false positive); FN(false negative). | 15-20 minutes after prick-puncture and intradermal tests, 72 hours after subcutaneous test. | 
| Safety assessment will be based on adverse event reports, electrocardiogram, physical examinations and clinical laboratory tests. | Only the participants who are allergic to the main components of Ginkgolides Meglumine Injection will be assessed in 3-10 days after using it by the investigators.. | within 7days before using Ginkgolides Meglumine Injectionand 3-10 days after using it. | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Allergy, Skin test, Ginkgolides Meglumine Injection