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Study identifier: NCT06664814 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

An Open-Label Phase 2 Study of N-Acetyl-D-Mannosamine (ManNAc) in Subjects With Primary Focal Segmental Glomerulosclerosis

Condition: Focal Segmental Glomerulosclerosis  ·  Sponsor: National Human Genome Research Institute (NHGRI)

PhasePhase 2
Planned participants30
Who can joinAll sexes, 18 Years to 115 Years
Healthy volunteersNo

About this study

Background: Focal segmental glomerulosclerosis (FSGS) is a disease that causes scarring in parts of the kidneys that filter waste. This can lead to protein loss in the urine, which can worsen kidney function. The kidneys may fail over time, and dialysis or a kidney transplant may be needed. Other treatments for this disease do not always work and often have adverse effects. Better treatments for FSGS are needed. Objective: To test a study drug (ManNAc) in people with FSGS. Eligibility: People aged 18 years and older with FSGS. Design: Participants will have 5 to 6 clinic visits over 14 weeks. Two of the visits will require overnight stays for 2 or 3 nights. ManNAc is a white powder that comes in a sachet. It is dissolved in water and taken twice a day by mouth. Participants will take their first dose at the clinic. They will learn how to store ManNAc and prepare each dose. They will record their doses in a diary. They will also write down any adverse effects or troubles they have using the drug at home. During clinic visits, participants will have physical exams with blood and urine tests. They will complete questionnaires about their health, sleep habits, and fatigue symptoms. During overnight visits, participants will also have 24-hour urine collection. A study team member will call participants 1 week after the first dose to check on their health. Follow-up phone calls will then be every 2 weeks after each clinic visit. Participants may meet with a dietitian to…

This description comes directly from the study's public registry record.

Talk to the study team

Marjan Huizing, Ph.D.  ·  (240) 893-4742  ·  KidneyManNAc@nih.gov

William A Gahl, M.D.  ·  (301) 402-2739  ·  gahlw@mail.nih.gov

Always discuss trial participation with your own doctor first.

Locations (1)

National Institutes of Health Clinical CenterBethesda, Maryland, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT06664814