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Recruiting Phase 2 Interventional

Efficacy of KL1333 in Adult Patients With Primary Mitochondrial Disease

ClinicalTrials.gov ID: NCT05650229

Public ClinicalTrials.gov record NCT05650229. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 7, 2026, 11:47 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

An Interventional, Randomised, Double-blind, Parallel-group, Placebo-controlled, Flexible-dose, Adaptive Study of the Efficacy of KL1333 in Adult Patients With Primary Mitochondrial Disease

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The primary objective of the FALCON study is to evaluate the efficacy of KL1333 on selected disease manifestations of primary mitochondrial disease (PMD) following 48 weeks of treatment. This objective involves evaluating the efficacy of KL1333 versus placebo on fatigue symptoms and impacts on daily living as well as on functional lower extremity strength and endurance. Additionally, the study evaluates the safety and tolerability of KL1333.

Study identification

NCT ID
NCT05650229
Recruitment status
Recruiting
Study type
Interventional
Phase
Phase 2
Lead sponsor
Pharming Technologies B.V.
Industry
Enrollment
180 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Dec 12, 2022
Primary completion
Sep 30, 2027
Completion
Oct 31, 2027
Last update posted
Jun 25, 2026

2022 – 2027

United States locations

U.S. sites
20
U.S. states
14
U.S. cities
18
Facility City State ZIP Site status
University of California, Irvine - ALS & Neuromuscular Center Orange California 92868 Recruiting
The Regents of the University of California - San Diego San Diego California 292093 Recruiting
UCSF Movement Disorders Clinic San Francisco California 94158 Not yet recruiting
Children's Hospital Colorado - Center for Cancer and Blood Disorders (CCBD) - Anschutz Medical Campus Location Aurora Colorado 80045 Recruiting
Yale University School of Medicine New Haven Connecticut 06519 Not yet recruiting
Novel Clinical Research Center, LLC Miami Florida 33186 Recruiting
Rare Disease Research, LLC Atlanta Georgia 303129 Recruiting
IU Health University Hospital Indianapolis Indiana 46202 Not yet recruiting
Johns Hopkins University School of Medicine Baltimore Maryland 21205 Not yet recruiting
Mayo Clinic Rochester Minnesota 55905 Recruiting
Washington University School of Medicine - Center for Advanced Medicine (CAM) - Neuroscience Center St Louis Missouri 63110 Not yet recruiting
Tekton Marlboro Neurology Marlboro New Jersey 07746 Recruiting
Columbia University Irving Medical Center New York New York 100032 Not yet recruiting
Icahn School of Medicine at Mount Sinai New York New York 10029-6574 Not yet recruiting
Akron Children's Hospital Akron Ohio 44307 Recruiting
The Children's Hospital of Philadelphia Philadelphia Pennsylvania 19104 Not yet recruiting
UPMC Children's Hospital of Pittsburgh Pittsburgh Pennsylvania 15224 Recruiting
Neurology and Neuromuscular Care Center-Neurology Rare Disease Center Flower Mound Texas 75028 Not yet recruiting
Baylor College of Medicine (BCM) Houston Texas 77030 Recruiting
The University of Texas Health Science Center at Houston Houston Texas 77030 Recruiting

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 35 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT05650229, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Jun 25, 2026 · Synced Sep 7, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT05650229 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →