The goal of this clinical trial was to compare transdermal glomerular filtration rate (tGFR) to plasma-derived indexed (to body surface area; BSA) GFR (nGFR) using MB-102 (relmapirazin) as the fluorescent compound. Adults with kidney function ranging from normal to Stage 4 chronic kidney disease (CKD) and participants spanning the entire range of human skin colors as defined by the Fitzpatrick Skin Scale (FSS) were included in the study. The main questions that the study aimed to answer were: * To establish that the MB-102 transdermal fluorescence measured GFR using the MediBeacon Transdermal GFR Measurement System is comparable to the measured MB-102 plasma GFR * To evaluate the safety and tolerability of a single dose of MB-102 in study participants * To evaluate the safety and effectiveness of the MediBeacon Transdermal GFR Measurement System (TGFR) for the non-invasive transdermal fluorescence detection of MB-102 in participants Participants had a transdermal sensor placed on their upper chest, and the TGFR collected background fluorescence. Participants then received a single dose of MB-102. Blood samples were collected and fluorescent measurements were taken over a 12- to 24-hour period. Following completion of the treatment period, participants returned to the study center approximately 1 week later for a safety follow-up visit. Researchers compared the results to see if the transdermal GFR measurements were comparable to the measured plasma GFR in those with and without normal kidney function and different skin coloration.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
OTHER
Masking
NONE
Enrollment
249
18.6 mg/mL in a 7.0 mL volume administered by intravenous injection over 30 - 60 seconds, followed by a 10 mL normal saline flush administered intravenously over 30 - 60 seconds
On treatment day, participants had a transdermal sensor placed on their upper chest, and the MediBeacon Transdermal GFR Measurement System was initiated to collect background fluorescence. After collection of background fluorescence, participants received a single dose of MB-102.
Velocity Clinical Research
Edgewater, Florida, United States
Research by Design, LLC
Chicago, Illinois, United States
Nucleus Network
Saint Paul, Minnesota, United States
Carolina Phase I Research
Raleigh, North Carolina, United States
Endeavor Clinical Trials, LLC
San Antonio, Texas, United States
West China Hospital of Sichuan University
Chengdu, Sichuan, China
Peking University First Hospital
Beijing, China
Affiliated Hospital of Xuzhou Medical University
Xuzhou, China
Proportion of Transdermal Derived Glomerular Filtration Rate (tGFR) Values Within 30% of the nGFR Plasma-derived Indexed Glomerular Filtration Rate (nGFR) Values
The performance measure of P30 is defined as the proportion of transdermal derived GFR values that are within 30% of the measured plasma-derived GFR. The comparison of transdermal derived glomerular filtration rate (tGFR) with respect to the plasma-derived indexed glomerular filtration rate (nGFR) was calculated with a double-sided 95% confidence interval (CI). The performance goal was 0.85, and success for the study was defined as a lower limit of the 95% CI greater than 0.85.
Time frame: Up to 24 hours following the study dose
Number of Participants With Treatment-emergent Adverse Events Associated With MB-102 Administration
An adverse event is defined as any untoward medical occurrence, unintended disease or injury, or untoward clinical signs (including abnormal laboratory findings) in subjects, temporally associated with the use of a medicinal product, whether or not related to the investigational medical device or drug.
Time frame: From the time of dosing through the follow-up visit, up to 10 days
Number of Participants With Treatment-emergent Adverse Events Associated With the MediBeacon Transdermal GFR Measurement System Device
An adverse event is defined as any untoward medical occurrence, unintended disease or injury, or untoward clinical signs (including abnormal laboratory findings) in subjects, temporally associated with the use of a medicinal product, whether or not related to the investigational medical device or drug.
Time frame: From the time of dosing through the follow-up visit, up to 10 days
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