New blood test safety check for rare disease drug monitoring
NCT ID NCT07573059
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at the safety of a special blood test system used to measure arginine levels in people with ARG1 deficiency who are taking the drug Loargys. The test system includes special blood collection tubes that stop the drug from breaking down arginine after the sample is taken. About 100 participants will be enrolled to see if any side effects occur from using this test system.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Loargys Arginine Test System (special blood collection tubes and lab test)
- What this could lead to
- If successful, this study could confirm that the test system is safe for monitoring arginine levels in patients on Loargys, supporting its routine use.
- What could go wrong
- This is a small, early safety study with no control group, so it cannot prove effectiveness. The test system may still have rare or unexpected side effects.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2026
- Expected to finish
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Jul 2027
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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0 to 100 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Participant receiving treatment with commercialized Loargys for ARG1-D * Participant is willing to sign the Informed Consent Form Exclusion Criteria: * None
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Genom att skicka in godkänner du våra Användarvillkor
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The study's own enquiry address
This study publishes an address for enquiries. See it below .
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Show contact details
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Genom att skicka in godkänner du våra Användarvillkor
Study contacts
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Contact
Email: •••••@•••••
Locations
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Rare Disease Research
RECRUITINGAtlanta, Georgia, 303029, United States