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Single-dose Trial of Enteric-coated Cysteamine Bitartrate Capsules in Healthy Adults

Single-dose Trial of Enteric-coated Cysteamine Bitartrate Capsules in Healthy Adults - CYSTCAP

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCTs031240346
Enrollment
10
Registered
2024-09-20
Start date
2024-11-28
Completion date
Unknown
Last updated
2025-07-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cystinosis Cystinosis

Interventions

Single dose of enteric-coated cysteamine bitartrate capsules
D003543

Sponsors

Katagiri Daisuke
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Japanese who are 18 years or older at the time of obtaining consent. 2. Individuals who weigh more than 50 kg. 3. Individuals who have no clinically significant abnormalities in clinical test results or medical history at the time of screening. 4. Individuals who can sign the informed consent form (ICF) and comply with the requirements and restrictions described in the ICF and the study protocol.

Exclusion criteria

Exclusion criteria: 1. Subjects with significant and clinically relevant comorbidities or histories of metabolic endocrine, liver, kidney, blood, cardiovascular, gastrointestinal, urinary, immune, neurological, and psychiatric diseases, as judged inappropriate for this study by the principal investigator or sub-investigator. 2. Subjects with a history of abdominal surgery that may affect drug absorption (excluding appendectomy). 3. Subjects with chronic constipation, fecal impaction tendency, or diarrhea. 4. Subjects with a history of peptic ulcer. 5. Subjects with hypersensitivity or allergy (or suspected) to Cystagon capsules and penicillamine, or a history of such conditions. 6. Subjects with hypersensitivity or allergy (or suspected) to Eudragit L100 or polyethylene glycol (PEG) 6000, or a history of such conditions. 7. Subjects who are pregnant or may be pregnant. 8. Subjects who are breastfeeding. 9. Subjects deemed inappropriate for participation in this clinical trial by the principal investigator or sub-investigator.

Design outcomes

Primary

MeasureTime frame
Pharmacokinetic parameters of cysteamine [AUC (area under the plasma drug concentration-time curve), CL/F (apparent clearance), Vd/F (apparent volume of distribution), ka (absorption rate constant), kel (disappearance rate constant) etc.)] are calculated.

Secondary

MeasureTime frame
The difference in nausea (vomiting) between the period after administration of the investigational drug and the period after administration of the control drug. Nausea (vomiting) will be evaluated using the Numerical Rating Scale (NRS: 0 = no nausea (vomiting) at all to 5 = the most severe nausea (vomiting) imaginable).

Contacts

Public ContactDaisuke Katagiri

National Center for Global Health and Medicine

CYSTCAP_office@jihs.go.jp+81-3-3202-7181

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Feb 4, 2026