NCT06310161

Brief Summary

The goal of this clinical trial is to test light therapy in patients with end stage kidney disease who are receiving hemodialysis. The main aim is to determine if light therapy decreases fatigue severity. Participants will receive light therapy using special glasses for one hour during the dialysis sessions for four weeks of treatment.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
60

participants targeted

Target at P25-P50 for not_applicable

Timeline
3mo left

Started Feb 2026

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress53%
Feb 2026Aug 2026

First Submitted

Initial submission to the registry

January 2, 2024

Completed
2 months until next milestone

First Posted

Study publicly available on registry

March 15, 2024

Completed
1.9 years until next milestone

Study Start

First participant enrolled

February 1, 2026

Completed
4 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 1, 2026

Expected
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

August 1, 2026

Last Updated

March 27, 2026

Status Verified

March 1, 2026

Enrollment Period

4 months

First QC Date

January 2, 2024

Last Update Submit

March 25, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • Fatigue Severity Scale

    Measures how bad or severe a person's fatigue is. Score range from 9-63; higher scores indicate increased fatigue.

    4 weeks

Study Arms (2)

Bright Light

EXPERIMENTAL

Light therapy will be delivered by the Re-Timer glasses for 60 minutes during dialysis sessions.

Device: Bright light

Dim Light

PLACEBO COMPARATOR

Dim light therapy will be delivered by the Re-Timer glasses for 60 minutes during dialysis sessions.

Device: Dim Light

Interventions

Bright light treatment will consist of using the Re-timer device 3 times per week during dialysis sessions for 4 weeks. The Re-timer is worn like a pair of glasses and contains light emitting diodes mounted on the lower portion of the frame. The Re-timer emits blue-green 500 nm light with an intensity of \~500 lux lm/m2. Participants will be instructed to use the device for 60 minutes at the beginning of each dialysis session.

Also known as: Re-Timer
Bright Light
Dim LightDEVICE

Dim light treatment will use non-light emitting glasses that look identical to Re-Timer for 4 weeks at each dialysis session following baseline assessments. Participants will use the device for 60 minutes at the beginning of their dialysis session.

Also known as: Re-Timer
Dim Light

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Signed informed consent prior to initiation of any study mandated procedure
  • Male and female participants ≥ 18 years of age
  • Diagnosis end stage kidney disease with hemodialysis 3 times/week for at least 1 month
  • Fatigue Severity Scale (FSS) \> 9 at enrollment
  • Home refrigerator for salivary cortisol storage

You may not qualify if:

  • Eye disorders: cataracts, glaucoma, retinal disorders (e.g. macular degeneration)
  • Participants with photosensitivity (e.g. epilepsy)
  • Hospitalized or acutely ill

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Pennsylvania

Philadelphia, Pennsylvania, 19104, United States

RECRUITING

MeSH Terms

Conditions

Kidney Failure, Chronic

Condition Hierarchy (Ancestors)

Renal Insufficiency, ChronicRenal InsufficiencyKidney DiseasesUrologic DiseasesFemale Urogenital DiseasesFemale Urogenital Diseases and Pregnancy ComplicationsUrogenital DiseasesMale Urogenital DiseasesChronic DiseaseDisease AttributesPathologic ProcessesPathological Conditions, Signs and Symptoms

Study Officials

  • Lea Ann Matura, PhD

    University of Pennsylvania

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Lea Ann Matura, PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

January 2, 2024

First Posted

March 15, 2024

Study Start

February 1, 2026

Primary Completion (Estimated)

June 1, 2026

Study Completion (Estimated)

August 1, 2026

Last Updated

March 27, 2026

Record last verified: 2026-03

Data Sharing

IPD Sharing
Will not share

Locations