Trial Outcomes & Findings for A Longitudinal Evaluation of a Radiotracer for Use in Tau Tracking (NCT NCT03919669)

NCT ID: NCT03919669

Last Updated: 2023-08-03

Results Overview

Composite mean SUVR across standard regions including: numerator was the entorhinal, amygdala, fusiform, inferior temporal, middle temporal cortex; denominator was the inferior cerebellum cortex. The SUVR is a ratio and has a theoretic interpretable minimum of 1.0. This primary outcome is reported by the three primary groups: Healthy Volunteers, Mild Cognitive Impairment, and Dementia.

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

27 participants

Primary outcome timeframe

Baseline to 12 months

Results posted on

2023-08-03

Participant Flow

Participant milestones

Participant milestones
Measure
Healthy Volunteers
As described in the study eligibility criteria: * Normal Cognition based on cognitive results at screening. * Healthy with no clinically relevant finding on physical examination at screening and upon reporting for the Baseline \[18F\]MK-6240 imaging visit. * CDR global score =0
Mild Cognitive Impairment
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD * A structural brain MRI with no evidence of non-AD disease to account for dementia or MRI exclusion criteria.
Dementia
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD
Overall Study
STARTED
6
8
13
Overall Study
COMPLETED
5
8
13
Overall Study
NOT COMPLETED
1
0
0

Reasons for withdrawal

Reasons for withdrawal
Measure
Healthy Volunteers
As described in the study eligibility criteria: * Normal Cognition based on cognitive results at screening. * Healthy with no clinically relevant finding on physical examination at screening and upon reporting for the Baseline \[18F\]MK-6240 imaging visit. * CDR global score =0
Mild Cognitive Impairment
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD * A structural brain MRI with no evidence of non-AD disease to account for dementia or MRI exclusion criteria.
Dementia
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD
Overall Study
Withdrawal by Subject
1
0
0

Baseline Characteristics

A Longitudinal Evaluation of a Radiotracer for Use in Tau Tracking

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Healthy Volunteers
n=6 Participants
As described in the study eligibility criteria: * Normal Cognition based on cognitive results at screening. * Healthy with no clinically relevant finding on physical examination at screening and upon reporting for the Baseline \[18F\]MK-6240 imaging visit. * CDR global score =0
Mild Cognitive Impairment
n=8 Participants
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD * A structural brain MRI with no evidence of non-AD disease to account for dementia or MRI exclusion criteria.
Dementia
n=13 Participants
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD
Total
n=27 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Age, Categorical
Between 18 and 65 years
1 Participants
n=5 Participants
0 Participants
n=7 Participants
1 Participants
n=5 Participants
2 Participants
n=4 Participants
Age, Categorical
>=65 years
5 Participants
n=5 Participants
8 Participants
n=7 Participants
12 Participants
n=5 Participants
25 Participants
n=4 Participants
Age, Continuous
69.85 years
n=5 Participants
71.60 years
n=7 Participants
74.52 years
n=5 Participants
72.62 years
n=4 Participants
Sex: Female, Male
Female
3 Participants
n=5 Participants
2 Participants
n=7 Participants
8 Participants
n=5 Participants
13 Participants
n=4 Participants
Sex: Female, Male
Male
3 Participants
n=5 Participants
6 Participants
n=7 Participants
5 Participants
n=5 Participants
14 Participants
n=4 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
6 Participants
n=5 Participants
8 Participants
n=7 Participants
13 Participants
n=5 Participants
27 Participants
n=4 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
White
6 Participants
n=5 Participants
8 Participants
n=7 Participants
13 Participants
n=5 Participants
27 Participants
n=4 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Region of Enrollment
United States
6 participants
n=5 Participants
8 participants
n=7 Participants
13 participants
n=5 Participants
27 participants
n=4 Participants

PRIMARY outcome

Timeframe: Baseline to 12 months

Population: 26 of the 27 participants completed the 12 month interval

Composite mean SUVR across standard regions including: numerator was the entorhinal, amygdala, fusiform, inferior temporal, middle temporal cortex; denominator was the inferior cerebellum cortex. The SUVR is a ratio and has a theoretic interpretable minimum of 1.0. This primary outcome is reported by the three primary groups: Healthy Volunteers, Mild Cognitive Impairment, and Dementia.

Outcome measures

Outcome measures
Measure
Healthy Volunteers
n=6 Participants
As described in the study eligibility criteria: * Normal Cognition based on cognitive results at screening. * Healthy with no clinically relevant finding on physical examination at screening and upon reporting for the Baseline \[18F\]MK-6240 imaging visit. * CDR global score =0
Mild Cognitive Impairment
n=8 Participants
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD * A structural brain MRI with no evidence of non-AD disease to account for dementia or MRI exclusion criteria.
Dementia
n=13 Participants
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD
Change in [18F]MK-6240 Standard Uptake Value Ratio (SUVR) Uptake
0.00 SUVR
Standard Deviation 0.05
0.10 SUVR
Standard Deviation 0.07
0.12 SUVR
Standard Deviation 0.16

SECONDARY outcome

Timeframe: Baseline to 12 months

Population: 26 of the 27 participants completed the 12 month interval

This outcome is correlational and therefore the arms/groups are collapsed to All Subjects so that we can assess the overall pattern of relationship between cognition and tau signal across the entire continuum of Alzheimer's disease. The ADAS-cog is one of the most frequently used tests to measure cognition in clinical trials in AD. The first 11 items of the ADAS-cog were used for this outcome. The ADAS was developed as a two-part scale: one that measured cognitive functions and one that measured non-cognitive functions such as mood and behavior. Most current research, including this study, uses the ADAS-Cog, which is the sub-scale that measures cognitive ability. The ADAS-cog score is based on incorrect items or errors and has a range of 0-50, where lower scores indicate better cognitive functioning.

Outcome measures

Outcome measures
Measure
Healthy Volunteers
n=27 Participants
As described in the study eligibility criteria: * Normal Cognition based on cognitive results at screening. * Healthy with no clinically relevant finding on physical examination at screening and upon reporting for the Baseline \[18F\]MK-6240 imaging visit. * CDR global score =0
Mild Cognitive Impairment
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD * A structural brain MRI with no evidence of non-AD disease to account for dementia or MRI exclusion criteria.
Dementia
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD
The Correlation Between the Change in [18F]MK-6240 Uptake and the Change in the Alzheimer's Disease Assessment Scale - Cognitive Subscale (ADAS-cog) Using Items 1-11
.02 Spearman Rho

SECONDARY outcome

Timeframe: Baseline to 12 months

Population: 26 of the 27 participants completed the 12 month interval

This outcome is correlational and therefore the arms/groups are collapsed to All Subjects so that we can assess the overall pattern of relationship between cognition and tau signal across the entire continuum of Alzheimer's disease. The CDR was developed primarily for use in persons with dementia of the Alzheimer type. The six domains of CDR are: Memory, Orientation, Judgment and Problem-solving, Community Affairs, Home and Hobbies, and Personal Care. Each domain is rated on a 5-point scale of functioning: 0 no impairment; 0.5 questionable impairment; 1 mild impairment; 2 moderate impairment; and 3 severe impairment. The Sum of Boxes is the score used which is simply the sum of the 6 Domain Box Scores. The range is 0-18 with lower scores indicating better cognitive function.

Outcome measures

Outcome measures
Measure
Healthy Volunteers
n=27 Participants
As described in the study eligibility criteria: * Normal Cognition based on cognitive results at screening. * Healthy with no clinically relevant finding on physical examination at screening and upon reporting for the Baseline \[18F\]MK-6240 imaging visit. * CDR global score =0
Mild Cognitive Impairment
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD * A structural brain MRI with no evidence of non-AD disease to account for dementia or MRI exclusion criteria.
Dementia
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD
Correlate the Changes in [18F]MK-6240 Uptake and Changes in Clinical Cognitive Assessments by Clinical Dementia Rating Scale (CDR).
.23 Spearman Rho

SECONDARY outcome

Timeframe: Baseline to 12 months

Population: 26 of the 27 participants completed the 12 month interval

This outcome is correlational and therefore the arms/groups are collapsed to All Subjects so that we can assess the overall pattern of relationship between cognition and tau signal across the entire continuum of Alzheimer's disease. The MMSE is a sensitive, valid and reliable 30-point questionnaire that is used extensively in clinical and research settings to measure cognitive impairment. It is commonly used as screening tool for dementia. It is also used to estimate the severity and progression of cognitive impairment and to follow the course of cognitive changes in an individual over time; thus, making it an effective way to document an individual's response to treatment. The range is 0-30 with higher scores indicating better cognitive functioning.

Outcome measures

Outcome measures
Measure
Healthy Volunteers
n=27 Participants
As described in the study eligibility criteria: * Normal Cognition based on cognitive results at screening. * Healthy with no clinically relevant finding on physical examination at screening and upon reporting for the Baseline \[18F\]MK-6240 imaging visit. * CDR global score =0
Mild Cognitive Impairment
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD * A structural brain MRI with no evidence of non-AD disease to account for dementia or MRI exclusion criteria.
Dementia
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD
Correlate the Changes in [18F]MK-6240 Uptake and Changes in Clinical Cognitive Assessments by Mini-Mental Status Exam (MMSE)
.43 Spearman Rho

SECONDARY outcome

Timeframe: Baseline to 24 months

Population: 26 of the 27 participants completed the 24 month interval

Composite mean SUVR across standard regions including: numerator was the entorhinal, amygdala, fusiform, inferior temporal, middle temporal cortex; denominator was the inferior cerebellum cortex. The SUVR is a ratio and has a theoretic interpretable minimum of 1.0. This primary outcome is reported by the three primary groups: Healthy Volunteers, Mild Cognitive Impairment, and Dementia.

Outcome measures

Outcome measures
Measure
Healthy Volunteers
n=6 Participants
As described in the study eligibility criteria: * Normal Cognition based on cognitive results at screening. * Healthy with no clinically relevant finding on physical examination at screening and upon reporting for the Baseline \[18F\]MK-6240 imaging visit. * CDR global score =0
Mild Cognitive Impairment
n=8 Participants
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD * A structural brain MRI with no evidence of non-AD disease to account for dementia or MRI exclusion criteria.
Dementia
n=13 Participants
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD
Change in [18F]MK-6240 Standard Uptake Value Ratio (SUVR) Uptake
-.01 SUVR
Standard Deviation .09
.21 SUVR
Standard Deviation .16
.24 SUVR
Standard Deviation .34

SECONDARY outcome

Timeframe: Baseline to 6 months

Population: 26 of the 27 participants completed the 6 month interval

Composite mean SUVR across standard regions including: numerator was the entorhinal, amygdala, fusiform, inferior temporal, middle temporal cortex; denominator was the inferior cerebellum cortex. The SUVR is a ratio and has a theoretic interpretable minimum of 1.0. This primary outcome is reported by the three primary groups: Healthy Volunteers, Mild Cognitive Impairment, and Dementia.

Outcome measures

Outcome measures
Measure
Healthy Volunteers
n=6 Participants
As described in the study eligibility criteria: * Normal Cognition based on cognitive results at screening. * Healthy with no clinically relevant finding on physical examination at screening and upon reporting for the Baseline \[18F\]MK-6240 imaging visit. * CDR global score =0
Mild Cognitive Impairment
n=8 Participants
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD * A structural brain MRI with no evidence of non-AD disease to account for dementia or MRI exclusion criteria.
Dementia
n=13 Participants
As described in the study eligibility criteria: * Have screening \[11C\]PiB PET imaging demonstrating amyloid binding based on qualitative read or DVR index value \>1.20. * MMSE score 26-30 (inclusive), CDR global score 0.5 for subjects with MCI * MMSE score 22-26 (inclusive), CDR global score 0.5 or 1 for subjects with mild dementia due to AD * MMSE score 16-21 (inclusive), CDR global score 1-2 for subjects with moderate dementia due to AD
Change in [18F]MK-6240 Standard Uptake Value Ratio (SUVR) Uptake
-.03 SUVR
Standard Deviation .04
-.07 SUVR
Standard Deviation .26
.19 SUVR
Standard Deviation .33

Adverse Events

Dementia

Serious events: 0 serious events
Other events: 3 other events
Deaths: 0 deaths

Healthy Volunteer

Serious events: 0 serious events
Other events: 1 other events
Deaths: 0 deaths

Mild Cognitive Impairment

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
Dementia
n=13 participants at risk
All subjects will complete PET imaging sessions evaluating the tau PET radioligand \[18F\]MK-6240 at baseline, as well as at 6, 12 and 24 months post-baseline. If unable to complete the 6 month, 12 month, or 24 month visit, an 18 month and/or 30 month visit may instead be scheduled, totaling a maximum of four time points. All Subjects: All subjects will be given the experimental tau PET radioligand \[18F\]MK-6240
Healthy Volunteer
n=6 participants at risk
All subjects will complete PET imaging sessions evaluating the tau PET radioligand \[18F\]MK-6240 at baseline, as well as at 6, 12 and 24 months post-baseline. If unable to complete the 6 month, 12 month, or 24 month visit, an 18 month and/or 30 month visit may instead be scheduled, totaling a maximum of four time points. All Subjects: All subjects will be given the experimental tau PET radioligand \[18F\]MK-6240
Mild Cognitive Impairment
n=8 participants at risk
All subjects will complete PET imaging sessions evaluating the tau PET radioligand \[18F\]MK-6240 at baseline, as well as at 6, 12 and 24 months post-baseline. If unable to complete the 6 month, 12 month, or 24 month visit, an 18 month and/or 30 month visit may instead be scheduled, totaling a maximum of four time points. All Subjects: All subjects will be given the experimental tau PET radioligand \[18F\]MK-6240
General disorders
Injection Site Reaction
7.7%
1/13 • Number of events 1 • Given that this longitudinal study involves procedures that will occur at 6-12 month intervals and does not include chronic treatment with an investigational agent, adverse events (AEs) and serious adverse events (SAEs) were captured during the study visit before and after PiB and MK6240 scans, within 24 hours after the scan. Adverse events were monitored from signing the informed consent form through study completion, on average 2.5 years.
The subjects received a phone call within 4 days from the study team for the purpose of ascertaining their wellbeing and information on adverse events that occur within 24 hours after the scan. If any adverse events were discovered, a clinician continued to follow up with the subject until resolved.
16.7%
1/6 • Number of events 1 • Given that this longitudinal study involves procedures that will occur at 6-12 month intervals and does not include chronic treatment with an investigational agent, adverse events (AEs) and serious adverse events (SAEs) were captured during the study visit before and after PiB and MK6240 scans, within 24 hours after the scan. Adverse events were monitored from signing the informed consent form through study completion, on average 2.5 years.
The subjects received a phone call within 4 days from the study team for the purpose of ascertaining their wellbeing and information on adverse events that occur within 24 hours after the scan. If any adverse events were discovered, a clinician continued to follow up with the subject until resolved.
0.00%
0/8 • Given that this longitudinal study involves procedures that will occur at 6-12 month intervals and does not include chronic treatment with an investigational agent, adverse events (AEs) and serious adverse events (SAEs) were captured during the study visit before and after PiB and MK6240 scans, within 24 hours after the scan. Adverse events were monitored from signing the informed consent form through study completion, on average 2.5 years.
The subjects received a phone call within 4 days from the study team for the purpose of ascertaining their wellbeing and information on adverse events that occur within 24 hours after the scan. If any adverse events were discovered, a clinician continued to follow up with the subject until resolved.
Musculoskeletal and connective tissue disorders
Back Pain
7.7%
1/13 • Number of events 1 • Given that this longitudinal study involves procedures that will occur at 6-12 month intervals and does not include chronic treatment with an investigational agent, adverse events (AEs) and serious adverse events (SAEs) were captured during the study visit before and after PiB and MK6240 scans, within 24 hours after the scan. Adverse events were monitored from signing the informed consent form through study completion, on average 2.5 years.
The subjects received a phone call within 4 days from the study team for the purpose of ascertaining their wellbeing and information on adverse events that occur within 24 hours after the scan. If any adverse events were discovered, a clinician continued to follow up with the subject until resolved.
0.00%
0/6 • Given that this longitudinal study involves procedures that will occur at 6-12 month intervals and does not include chronic treatment with an investigational agent, adverse events (AEs) and serious adverse events (SAEs) were captured during the study visit before and after PiB and MK6240 scans, within 24 hours after the scan. Adverse events were monitored from signing the informed consent form through study completion, on average 2.5 years.
The subjects received a phone call within 4 days from the study team for the purpose of ascertaining their wellbeing and information on adverse events that occur within 24 hours after the scan. If any adverse events were discovered, a clinician continued to follow up with the subject until resolved.
0.00%
0/8 • Given that this longitudinal study involves procedures that will occur at 6-12 month intervals and does not include chronic treatment with an investigational agent, adverse events (AEs) and serious adverse events (SAEs) were captured during the study visit before and after PiB and MK6240 scans, within 24 hours after the scan. Adverse events were monitored from signing the informed consent form through study completion, on average 2.5 years.
The subjects received a phone call within 4 days from the study team for the purpose of ascertaining their wellbeing and information on adverse events that occur within 24 hours after the scan. If any adverse events were discovered, a clinician continued to follow up with the subject until resolved.
General disorders
Infusion Site Extravasation
7.7%
1/13 • Number of events 1 • Given that this longitudinal study involves procedures that will occur at 6-12 month intervals and does not include chronic treatment with an investigational agent, adverse events (AEs) and serious adverse events (SAEs) were captured during the study visit before and after PiB and MK6240 scans, within 24 hours after the scan. Adverse events were monitored from signing the informed consent form through study completion, on average 2.5 years.
The subjects received a phone call within 4 days from the study team for the purpose of ascertaining their wellbeing and information on adverse events that occur within 24 hours after the scan. If any adverse events were discovered, a clinician continued to follow up with the subject until resolved.
0.00%
0/6 • Given that this longitudinal study involves procedures that will occur at 6-12 month intervals and does not include chronic treatment with an investigational agent, adverse events (AEs) and serious adverse events (SAEs) were captured during the study visit before and after PiB and MK6240 scans, within 24 hours after the scan. Adverse events were monitored from signing the informed consent form through study completion, on average 2.5 years.
The subjects received a phone call within 4 days from the study team for the purpose of ascertaining their wellbeing and information on adverse events that occur within 24 hours after the scan. If any adverse events were discovered, a clinician continued to follow up with the subject until resolved.
0.00%
0/8 • Given that this longitudinal study involves procedures that will occur at 6-12 month intervals and does not include chronic treatment with an investigational agent, adverse events (AEs) and serious adverse events (SAEs) were captured during the study visit before and after PiB and MK6240 scans, within 24 hours after the scan. Adverse events were monitored from signing the informed consent form through study completion, on average 2.5 years.
The subjects received a phone call within 4 days from the study team for the purpose of ascertaining their wellbeing and information on adverse events that occur within 24 hours after the scan. If any adverse events were discovered, a clinician continued to follow up with the subject until resolved.

Additional Information

Dr. Sterling Johnson

University of WI Alzheimer's Disease Research Center

Phone: 608-262-9549

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place