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This study seeks to explore the magnitude and duration of central nervous system effects and pharmacokinetics after intravenous infusion of diphenhydramine.
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| DiphenhydrAMINE Injectable Solution | Drug | Intravenous infusion of diphenhydramine 50 mg. |
| Measure | Description | Time Frame |
|---|---|---|
| Change in Score of Battery of Cognitive Function Tests (Reaction Time) | Change in the results of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation after diphenhydramine administration compared to baseline. Reaction Time Median Five-Choice Reaction Time is the median duration it took for a subject to release the response button after the presentation of the target stimulus, calculated across correct, assessed trials in which the stimulus could appear in any one of five locations. Lower is better. Minimum score is 100 and maximum score is 5100. | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
| Change in Score of Battery of Cognitive Function Tests (Digit Span) | Change in the results of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation after diphenhydramine administration compared to baseline. Digit Span Maximum Span Passed Forwards is the longest sequence problem successfully reached and passed by the subject. Higher is better. Minimum score is 0 and maximum score is 9. | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
| Change in Score of Battery of Cognitive Function Tests (Visual Analog Scale for Sedation) | Change in the results of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation after diphenhydramine administration compared to baseline. The Visual Analog Scale for Sedation is a scale where participants indicate their current state on a scale from "Sedated" to "Alert". Higher score is more alert. Minimum score is 0 and maximum score is 12.8. | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
| Measure | Description | Time Frame |
|---|---|---|
| Elderly vs. Adult Score of Battery of Cognitive Function Tests at Specified Time Points (Reaction Time) | Score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (0, 30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration). Reaction Time Median Five-Choice Reaction Time is the median duration it took for a subject to release the response button after the presentation of the target stimulus, calculated across correct, assessed trials in which the stimulus could appear in any one of five locations. Lower is better. Minimum score is 100 and maximum score is 5100. |
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Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Michelle Rainka, PharmD | Dent Neurologic Institute | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Dent Neurologic Institute | Amherst | New York | 14226 | United States |
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| ID | Title | Description |
|---|---|---|
| FG000 | Diphenhydramine 50 mg IV Infusion | Participants received an IV infusion containing 50 mg diphenhydramine in NS. |
| Title | Milestones | Reasons Not Completed | |||||
|---|---|---|---|---|---|---|---|
| Overall Study |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot_SAP | Yes | Yes | No | Study Protocol and Statistical Analysis Plan | Feb 9, 2022 |
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| Change in Score of Battery of Cognitive Function Tests (Spatial Working Memory) | Change in the results of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation after diphenhydramine administration compared to baseline. Spatial Working Memory Between Errors is the number of times the subject incorrectly revisits a box in which a token has been previously found. Lower is better. Minimum score is 0 and maximum score is 63. | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
| Change in Score of Battery of Cognitive Function Tests (Paired Associates Learning) | Change in the results of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation after diphenhydramine administration compared to baseline. Paired Associates Learning First Attempt Memory Score is the number of times a subject chose the correct box on their first attempt when recalling the pattern locations. Higher is better. Minimum score is 0 and maximum score is 20. | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
| Change in Score of Battery of Cognitive Function Tests (Rapid Visual Information Processing) | Change in the results of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation after diphenhydramine administration compared to baseline. Rapid Visual Processing Median Response Latency is the median response latency on trials where the subject responded correctly, calculated across all assessed trials. Lower is better. Minimum score is 0 and maximum score is 908. | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
| Before and after diphenhydramine administration (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) |
| Elderly vs. Adult Score of Battery of Cognitive Function Tests at Specified Time Points (Digit Span) | Score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (0, 30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration). Digit Span Maximum Span Passed Forwards is the longest sequence problem successfully reached and passed by the subject. Higher is better. Minimum score is 0 and maximum score is 9. | Before and after diphenhydramine administration (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) |
| Elderly vs. Adult Score of Battery of Cognitive Function Tests at Specified Time Points (Visual Analog Scale for Sedation) | Score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (0, 30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration). The Visual Analog Scale for Sedation is a scale where participants indicate their current state on a scale from "Sedated" to "Alert". Higher score is more alert. Minimum score is 0 and maximum score is 12.8. | Before and after diphenhydramine administration (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) |
| Elderly vs. Adult Score of Battery of Cognitive Function Tests at Specified Time Points (Spatial Working Memory) | Score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (0, 30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration). Spatial Working Memory Between Errors is the number of times the subject incorrectly revisits a box in which a token has been previously found. Lower is better. Minimum score is 0 and maximum score is 63. | Before and after diphenhydramine administration (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) |
| Elderly vs. Adult Score of Battery of Cognitive Function Tests at Specified Time Points (Paired Associates Learning) | Score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (0, 30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration). Paired Associates Learning First Attempt Memory Score is the number of times a subject chose the correct box on their first attempt when recalling the pattern locations. Higher is better. Minimum score is 0 and maximum score is 20. | Before and after diphenhydramine administration (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) |
| Elderly vs. Adult Score of Battery of Cognitive Function Tests at Specified Time Points (Rapid Visual Information Processing) | Score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (0, 30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration). Rapid Visual Processing Median Response Latency is the median response latency on trials where the subject responded correctly, calculated across all assessed trials. Lower is better. Minimum score is 0 and maximum score is 908. | Before and after diphenhydramine administration (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) |
| Elderly vs. Adult Diphenhydramine AUC | Difference between diphenhydramine pharmacokinetic area under the curve (AUC) in elderly subjects aged 65+ vs. adult subjects aged 35 to 50 | Immediately after diphenhydramine administration to 480 minutes after diphenhydramine administration |
| Elderly vs. Adult Change in Score of Battery of Cognitive Function Tests After Diphenhydramine (Reaction Time) | Change in the score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) compared to baseline. Reaction Time Median Five-Choice Reaction Time is the median duration it took for a subject to release the response button after the presentation of the target stimulus, calculated across correct, assessed trials in which the stimulus could appear in any one of five locations. Lower is better. Minimum score is 100 and maximum score is 5100. | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
| Elderly vs. Adult Change in Score of Battery of Cognitive Function Tests After Diphenhydramine (Digit Span) | Change in the score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) compared to baseline. Digit Span Maximum Span Passed Forwards is the longest sequence problem successfully reached and passed by the subject. Higher is better. Minimum score is 0 and maximum score is 9. | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
| Elderly vs. Adult Change in Score of Battery of Cognitive Function Tests After Diphenhydramine (Visual Analog Scale for Sedation) | Change in the score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) compared to baseline. The Visual Analog Scale for Sedation is a scale where participants indicate their current state on a scale from "Sedated" to "Alert". Higher score is more alert. Minimum score is 0 and maximum score is 12.8. | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
| Elderly vs. Adult Change in Score of Battery of Cognitive Function Tests After Diphenhydramine (Spatial Working Memory) | Change in the score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) compared to baseline. Spatial Working Memory Between Errors is the number of times the subject incorrectly revisits a box in which a token has been previously found. Lower is better. Minimum score is 0 and maximum score is 63. | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
| Elderly vs. Adult Change in Score of Battery of Cognitive Function Tests After Diphenhydramine (Paired Associates Learning) | Change in the score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) compared to baseline. Paired Associates Learning First Attempt Memory Score is the number of times a subject chose the correct box on their first attempt when recalling the pattern locations. Higher is better. Minimum score is 0 and maximum score is 20. | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
| Elderly vs. Adult Change in Score of Battery of Cognitive Function Tests After Diphenhydramine (Rapid Visual Information Processing) | Change in the score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) compared to baseline. Rapid Visual Processing Median Response Latency is the median response latency on trials where the subject responded correctly, calculated across all assessed trials. Lower is better. Minimum score is 0 and maximum score is 908. | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
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| ID | Title | Description |
|---|---|---|
| BG000 | Diphenhydramine 50 mg IV Infusion | Participants received an IV infusion containing 50 mg diphenhydramine in NS. |
| Units | Counts |
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| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes | ||||||||||||||
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| Age, Categorical | Count of Participants | Participants |
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| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | ||||||||||||||||||||||||||||
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| Primary | Change in Score of Battery of Cognitive Function Tests (Reaction Time) | Change in the results of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation after diphenhydramine administration compared to baseline. Reaction Time Median Five-Choice Reaction Time is the median duration it took for a subject to release the response button after the presentation of the target stimulus, calculated across correct, assessed trials in which the stimulus could appear in any one of five locations. Lower is better. Minimum score is 100 and maximum score is 5100. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | ms | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
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| Secondary | Elderly vs. Adult Score of Battery of Cognitive Function Tests at Specified Time Points (Reaction Time) | Score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (0, 30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration). Reaction Time Median Five-Choice Reaction Time is the median duration it took for a subject to release the response button after the presentation of the target stimulus, calculated across correct, assessed trials in which the stimulus could appear in any one of five locations. Lower is better. Minimum score is 100 and maximum score is 5100. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | ms | Before and after diphenhydramine administration (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) |
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| Secondary | Elderly vs. Adult Score of Battery of Cognitive Function Tests at Specified Time Points (Digit Span) | Score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (0, 30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration). Digit Span Maximum Span Passed Forwards is the longest sequence problem successfully reached and passed by the subject. Higher is better. Minimum score is 0 and maximum score is 9. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Before and after diphenhydramine administration (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) |
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| Secondary | Elderly vs. Adult Score of Battery of Cognitive Function Tests at Specified Time Points (Visual Analog Scale for Sedation) | Score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (0, 30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration). The Visual Analog Scale for Sedation is a scale where participants indicate their current state on a scale from "Sedated" to "Alert". Higher score is more alert. Minimum score is 0 and maximum score is 12.8. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Before and after diphenhydramine administration (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) |
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| Primary | Change in Score of Battery of Cognitive Function Tests (Digit Span) | Change in the results of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation after diphenhydramine administration compared to baseline. Digit Span Maximum Span Passed Forwards is the longest sequence problem successfully reached and passed by the subject. Higher is better. Minimum score is 0 and maximum score is 9. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
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| Primary | Change in Score of Battery of Cognitive Function Tests (Visual Analog Scale for Sedation) | Change in the results of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation after diphenhydramine administration compared to baseline. The Visual Analog Scale for Sedation is a scale where participants indicate their current state on a scale from "Sedated" to "Alert". Higher score is more alert. Minimum score is 0 and maximum score is 12.8. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
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| Primary | Change in Score of Battery of Cognitive Function Tests (Spatial Working Memory) | Change in the results of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation after diphenhydramine administration compared to baseline. Spatial Working Memory Between Errors is the number of times the subject incorrectly revisits a box in which a token has been previously found. Lower is better. Minimum score is 0 and maximum score is 63. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
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| Primary | Change in Score of Battery of Cognitive Function Tests (Paired Associates Learning) | Change in the results of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation after diphenhydramine administration compared to baseline. Paired Associates Learning First Attempt Memory Score is the number of times a subject chose the correct box on their first attempt when recalling the pattern locations. Higher is better. Minimum score is 0 and maximum score is 20. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
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| Primary | Change in Score of Battery of Cognitive Function Tests (Rapid Visual Information Processing) | Change in the results of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation after diphenhydramine administration compared to baseline. Rapid Visual Processing Median Response Latency is the median response latency on trials where the subject responded correctly, calculated across all assessed trials. Lower is better. Minimum score is 0 and maximum score is 908. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
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| Secondary | Elderly vs. Adult Score of Battery of Cognitive Function Tests at Specified Time Points (Spatial Working Memory) | Score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (0, 30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration). Spatial Working Memory Between Errors is the number of times the subject incorrectly revisits a box in which a token has been previously found. Lower is better. Minimum score is 0 and maximum score is 63. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Before and after diphenhydramine administration (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) |
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| Secondary | Elderly vs. Adult Score of Battery of Cognitive Function Tests at Specified Time Points (Paired Associates Learning) | Score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (0, 30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration). Paired Associates Learning First Attempt Memory Score is the number of times a subject chose the correct box on their first attempt when recalling the pattern locations. Higher is better. Minimum score is 0 and maximum score is 20. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Before and after diphenhydramine administration (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) |
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| Secondary | Elderly vs. Adult Score of Battery of Cognitive Function Tests at Specified Time Points (Rapid Visual Information Processing) | Score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (0, 30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration). Rapid Visual Processing Median Response Latency is the median response latency on trials where the subject responded correctly, calculated across all assessed trials. Lower is better. Minimum score is 0 and maximum score is 908. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Before and after diphenhydramine administration (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) |
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| Secondary | Elderly vs. Adult Diphenhydramine AUC | Difference between diphenhydramine pharmacokinetic area under the curve (AUC) in elderly subjects aged 65+ vs. adult subjects aged 35 to 50 | Blood was collected from study participants as specified in the study protocol; however, samples were destroyed and not analyzed due to early study termination. Therefore, there are no results for this endpoint to report. | Posted | Immediately after diphenhydramine administration to 480 minutes after diphenhydramine administration |
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| Secondary | Elderly vs. Adult Change in Score of Battery of Cognitive Function Tests After Diphenhydramine (Reaction Time) | Change in the score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) compared to baseline. Reaction Time Median Five-Choice Reaction Time is the median duration it took for a subject to release the response button after the presentation of the target stimulus, calculated across correct, assessed trials in which the stimulus could appear in any one of five locations. Lower is better. Minimum score is 100 and maximum score is 5100. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | ms | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
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| Secondary | Elderly vs. Adult Change in Score of Battery of Cognitive Function Tests After Diphenhydramine (Digit Span) | Change in the score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) compared to baseline. Digit Span Maximum Span Passed Forwards is the longest sequence problem successfully reached and passed by the subject. Higher is better. Minimum score is 0 and maximum score is 9. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
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| Secondary | Elderly vs. Adult Change in Score of Battery of Cognitive Function Tests After Diphenhydramine (Visual Analog Scale for Sedation) | Change in the score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) compared to baseline. The Visual Analog Scale for Sedation is a scale where participants indicate their current state on a scale from "Sedated" to "Alert". Higher score is more alert. Minimum score is 0 and maximum score is 12.8. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
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| Secondary | Elderly vs. Adult Change in Score of Battery of Cognitive Function Tests After Diphenhydramine (Spatial Working Memory) | Change in the score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) compared to baseline. Spatial Working Memory Between Errors is the number of times the subject incorrectly revisits a box in which a token has been previously found. Lower is better. Minimum score is 0 and maximum score is 63. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
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| Secondary | Elderly vs. Adult Change in Score of Battery of Cognitive Function Tests After Diphenhydramine (Paired Associates Learning) | Change in the score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) compared to baseline. Paired Associates Learning First Attempt Memory Score is the number of times a subject chose the correct box on their first attempt when recalling the pattern locations. Higher is better. Minimum score is 0 and maximum score is 20. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
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| Secondary | Elderly vs. Adult Change in Score of Battery of Cognitive Function Tests After Diphenhydramine (Rapid Visual Information Processing) | Change in the score of the CANTAB battery of cognitive function tests (reaction time, rapid visual information processing, paired associates learning, spatial working memory, digit span) and visual analog scale for sedation in elderly subjects aged 65+ compared to adult subjects aged 35 to 50 at specified time points (30, 60, 210, 240, 450, 480 minutes after diphenhydramine administration) compared to baseline. Rapid Visual Processing Median Response Latency is the median response latency on trials where the subject responded correctly, calculated across all assessed trials. Lower is better. Minimum score is 0 and maximum score is 908. | Data were collected for 3 study participants prior to study termination. There were no participants with data collected at the following time points due to early study termination as no participants were enrolled in the group to have data collected at these time points: 60 min, 240 min, or 480 min post-diphenhydramine. Data were not analyzed via ANOVA with contrast or via PK/PD modeling as planned as there were lack of sufficient data to perform this analysis due to early study termination. | Posted | Mean | Standard Deviation | units on a scale | Change from before to after diphenhydramine administration (30, 60, 210, 240, 450, and 480 minutes after diphenhydramine) |
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21 days
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Diphenhydramine 50 mg IV Infusion | Participants received an IV infusion containing 50 mg diphenhydramine in NS. | 0 | 3 | 0 | 3 | 0 | 3 |
Not provided
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The study was terminated due to institution decision prior to data analysis.
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| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Michelle Rainka, PharmD | Dent Neurologic Institute | 716-250-2000 | mrainka@dentinstitute.com |
| Oct 27, 2025 |
| Prot_SAP_000.pdf |
Not provided
| Unknown or Not Reported |
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| Native Hawaiian or Other Pacific Islander |
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| Black or African American |
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| White |
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| More than one race |
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| Unknown or Not Reported |
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| Reaction Time 450 Minutes Post-Diphenhydramine (Median Five-Choice Movement Time) |
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