Pharmacokinetics and Safety of MB-102 (Relmapirazin) and the MediBeacon Transdermal GFR Measurement System in Evaluation of Kidney Function in Normal and Renal Compromised Subjects

Study Results

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

249 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-06-14

Study Completion Date

2023-02-15

Brief Summary

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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.

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Detailed Description

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Conditions

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Chronic Kidney Disease

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

OTHER

Blinding Strategy

NONE

Study Groups

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eGFR ≥ 70 mL/min/1.73 m^2

Participants with eGFR ≥ 70 mL/min/1.73 m\^2 received one 130 mg dose of MB-102 and a transdermal sensor was placed on their chest. Blood samples and fluorescent measurements were collected over 12 hours.

Group Type EXPERIMENTAL

MB-102

Intervention Type DRUG

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

MediBeacon Transdermal Glomerular Filtration Rate Measurement System (TGFR)

Intervention Type DEVICE

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.

eGFR < 70 mL/min/1.73 m^2

Participants with eGFR \< 70 mL/min/1.73 m\^2 received one 130 mg dose of MB-102 and a transdermal sensor was placed on their chest. Blood samples and fluorescent measurements were collected over 24 hours.

Group Type EXPERIMENTAL

MB-102

Intervention Type DRUG

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

MediBeacon Transdermal Glomerular Filtration Rate Measurement System (TGFR)

Intervention Type DEVICE

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.

Interventions

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MB-102

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

Intervention Type DRUG

MediBeacon Transdermal Glomerular Filtration Rate Measurement System (TGFR)

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.

Intervention Type DEVICE

Other Intervention Names

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Relmapirazin

Eligibility Criteria

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Inclusion Criteria

* Eligible female non-pregnant participants who are either not of child-bearing potential or willing to use adequate contraception during the trial
* Males must be willing to practice abstinence or utilize adequate contraception from dosing day to at least 7 days post-dose
* For women of child-bearing potential, the participant should have a negative serum pregnancy test at screening, and agrees to one of the following acceptable contraceptive methods used consistently and correctly i.e. abstinence, oral contraceptive either combined or progesterone alone; injectable progesterone, implants of levonorgestrel, estrogenic vaginal ring, percutaneous contraceptive patches, IUD device or system or male partner sterilization
* Men will not donate sperm during the study and for 1 month following the last dose of study drug
* Participants who are capable of directly providing informed consent and who can comply with the requirements and restrictions required by the protocol
* Adequate venous access sufficient to allow blood sampling per protocol requirements

Exclusion Criteria

* Participants positive via PCR testing for COVID-19 (Vaccinated participants without symptoms of COVID-19 are not required to undergo PCR testing but may be tested at the discretion of the study site)
* Recent donation or loss of blood or plasma: 100 mL to 499 mL within 30 days prior to the initial dose of the study medication; or more than 499 mL within 56 days prior to the initial dose of study medication
* Non-steroidal anti-inflammatory (NSAID) use within 3 days of MB-102 dosing
* Participant has participated in a clinical trial and has received an investigational product within the following time ranges: prior to the first dosing day in the current study: either 30 days or 5 half-lives of the investigational product (whichever duration is longer)
* History of skin sensitivity to adhesives (e.g. Band-Aids, surgical tape)
* History of severe allergic hypersensitivity reactions (unacceptable adverse events) or anaphylactoid reaction to any allergen including drugs, MB-102 or other related products (intolerance to a drug is not considered a drug allergy).
* Any characteristics which, in the opinion of the investigator, makes the participant a poor candidate for participation in the clinical trial
* Significant scarring, tattoos or alterations in pigmentation on the sternum or other sensor location testing areas that would alter sensor readings versus other areas of the skin
* Any serious or uncontrolled medical disorder, active infection, physical exam finding, laboratory finding, or psychiatric condition that in the opinion of the investigator would limit the participant's ability to complete study requirements or may put the participant at increased risk or compromise the interpretability of study results.
* Currently receiving dialysis
* Currently anuric
* Positive serum pregnancy test
* Participants with an eGFR \> 120 mL/min/1.73m\^2

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes