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CompletedNCT00107770Updated Jan 11, 2010

Safety Study of Oral Sodium Phenylbutyrate in Subjects With ALS (Amyotrophic Lateral Sclerosis)

A Phase 1/2 interventional study of sodium phenylbutyrate in Amyotrophic Lateral Sclerosis, sponsored by US Department of Veterans Affairs. Completed at 10 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2010-01-11.

Sponsored by US Department of Veterans Affairs · Phase 1/2, Interventional, and Treatment

Phase
Phase 1/2
Study type
Interventional
Enrollment
40
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of the study is to evaluate the safety of sodium phenylbutyrate (NaPB) treatment in subjects with amyotrophic lateral sclerosis (ALS) and the ability to take this medication without major side effects.

Read the detailed description

Although it is known that nerve cells die in the brains and spinal cords of patients who have ALS, the cause of the cell death is unknown. There is evidence that this cell death may be caused by changes in DNA, the body's genetic material. Drugs such as sodium phenylbutyrate (NaPB) can increase the expression of genes, block how the motor nerve cells in ALS die, and may prove to be an effective therapy for ALS. NaPB has shown an improvement in survival in mice with conditions similar to ALS.

STUDY DESIGN:

All research participants will take sodium phenylbutyrate for a total of 20 weeks. The dose of medication will be increased every 2 to 4 weeks until a maximum, easily tolerated dose is achieved (study maximum is 21 g/day).

02

Conditions studied

  • Amyotrophic Lateral Sclerosis

Keywords

  • ALS
  • histone deacetylase inhibition
  • open label
  • safety study
  • sodium phenylbutyrate
03

In context

Motor Neuron Disease

717 studies on the registry are indexed under Motor Neuron Disease; 137 are open to participants now.

This study's enrollment of 40 is above the median of 35 across 461 interventional studies indexed under Motor Neuron Disease.

Browse Motor Neuron Disease studies →

Lead sponsor

US Department of Veterans Affairs is the lead sponsor of 658 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Diagnosed with ALS
  • At least 18 years of age
  • Women, who can become pregnant, must actively use effective birth control measures

Exclusion criteria

Exclusion Criteria:

  • Must not have any other neurological (nervous system) disease

Veterans only are eligible to participate at VA sites.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
40 participants (actual)

Study arms

  • Other
    1

    ALS patient

    Drug: sodium phenylbutyrate

Interventions

  • Drugsodium phenylbutyrate

    histone deacteylase inhibitor

06

What researchers measure

Primary outcomes

  1. safety and tolerability

    Time frame: 20 weeks

Secondary outcomes

  1. The number of side effects at each dosage, including abnormalities in vital signs, physical examination, blood tests and EKGs, change in vital capacity (breathing function) and ALS functional rating scale

  2. Relationship between blood levels and sodium phenylbutyrate dosage

07

Study locations

10 sites
  • VA Medical Center, Iowa City
    Iowa City, Iowa 52246-2208, United States
  • VA Medical Center, Lexington
    Lexington, Kentucky 40502, United States
  • VA Maryland Health Care System, Baltimore
    Baltimore, Maryland 21201, United States
  • Edith Nourse Rogers Memorial Veterans Hospital, Bedford
    Bedford, Massachusetts 01730, United States
  • VA Medical Center, Jamaica Plain Campus
    Boston, Massachusetts 02130, United States
  • VA Medical Center, Syracuse
    Syracuse, New York 13210, United States
  • VA Medical Center, Durham
    Durham, North Carolina 27705, United States
  • VA Medical Center, Cincinnati
    Cincinnati, Ohio 45220, United States
  • VA Pittsburgh Health Care System
    Pittsburgh, Pennsylvania 15240, United States
  • Michael E. DeBakey VA Medical Center (152)
    Houston, Texas 77030, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 11, 2010, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00107770
Lead sponsor
US Department of Veterans Affairs
Collaborators
Muscular Dystrophy Association
First posted
Apr 8, 2005
Start date
Apr 2005
Primary completion
Nov 2006
Completion
Sep 2007
Last update
Jan 11, 2010

Study contacts

Robert Ferrante, PhD MSc
principal investigator · Edith Nourse Rogers Memorial Veterans Hospital, Bedford

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2008. You cannot join it, but the record below documents what was studied.

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