Evaluating NPI-001 for treating cystinosis

A Phase 1/2 Pharmacokinetic and Pharmacodynamic Study of NPI-001 Oral Solution Compared to Cysteamine Bitartrate in Cystinosis Patients

Phase1; Phase2 Interventional Nacuity Pharmaceuticals, Inc. · NCT05994534

This study is testing a new oral treatment called NPI-001 to see if it can lower cystine levels in people aged 10 and older with cystinosis better than the current standard treatment.

Quick facts

PhasePhase1; Phase2
Study typeInterventional
Enrollment12 (estimated)
Ages10 Years and up
SexAll
SponsorNacuity Pharmaceuticals, Inc. Industry-sponsored
Locations1 site (Westmead, New South Wales)
Trial IDNCT05994534 on ClinicalTrials.gov

What this trial studies

This study investigates the safety, pharmacokinetics, and pharmacodynamics of NPI-001 oral solution in patients with cystinosis aged 10 years and older. Participants will be assessed for the ability of NPI-001 to reduce cystine levels compared to the standard treatment, cysteamine. The study aims to provide insights into the effectiveness and safety profile of NPI-001, which may offer a new therapeutic option for managing cystinosis.

Who should consider this trial

Good fit: Ideal candidates are males and females aged 10 years or older diagnosed with nephropathic cystinosis who can temporarily stop cysteamine therapy.

Not a fit: Patients who have undergone kidney transplantation or are currently receiving dialysis treatment may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a more effective treatment option for patients with cystinosis.

How similar studies have performed: Other studies have explored treatments for cystinosis, but the specific approach of using NPI-001 is novel and has not been extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Males or females, any race, ≥ 10 years of age.
2. Diagnosis of nephropathic cystinosis and able to cease cysteamine therapy for 2 days.
3. Females will be nonpregnant and nonlactating, and females of childbearing potential and males will agree to use contraception as detailed in the protocol.
4. Able to comprehend and willing to sign an informed consent /assent form and to abide by the study restrictions (travel as necessary, clinical phase 1 unit or similar for up to 3 days).

Exclusion Criteria:

1. Have undergone kidney transplantation.
2. Are receiving dialysis treatment.
3. History of significant hypersensitivity to NAC or any ingredient of NPI-001 oral solution.
4. Participation in a clinical study involving administration of an investigational drug (new chemical entity) in the 30 days prior to Day 1.
5. Inability to provide blood samples, including difficulty with venous access.
6. Subjects who, in the opinion of the Investigator and/or Sponsor (or designee), should not participate in this study.

Where this trial is running

Westmead, New South Wales

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Cystinosis
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.