Skip to content

Study for the relationship between blood C-reactive protein (CRP) levels and blood tofacitinib levels in ulcerative colitis

Study for the relationship between blood C-reactive protein (CRP) levels and blood tofacitinib levels in ulcerative colitis - the relationship between blood C-reactive protein (CRP) levels and blood tofacitinib levels in ulcerative colitis

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000050907
Enrollment
20
Registered
2023-05-01
Start date
2023-10-26
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

Ulcerative colitis

Interventions

None listed

Sponsors

Wakayama medical university
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. male or female, over 18 years old 2. diagnosed with ulcerative colitis at least 3 months prior to obtaining consent 3.The patient is taking Xeljanz. 4.Consent can be obtained from the individual.

Exclusion criteria

Exclusion criteria: 1. Pregnant or lactating women. 2.Patients with a history of hypersensitivity to Xeljanz. 3.Patients who have previously undergone surgical treatment for ulcerative colitis. 4.Patients who are dependent on parenteral nutrition. 5.Patients with Child-pugh Class C hepatic impairment. 6.Patients with active tuberculosis or untreated latent tuberculosis. 7.Patients with a history of malignancy within the last 5 years. 8.Patients with a history of opportunistic infections or immunodeficiency syndromes. 9.Patients with mental illness. 10.Patients who are judged by the physician to be unsuitable for the safe conduct of the study.

Design outcomes

Primary

MeasureTime frame
Association between blood CRP concentration and tofacitinib concentration, association between blood IL-6 concentration and tofacitinib concentration, association between CYP3A4/5 gene polymorphism and tofacitinib concentration, association between duration of tofacitinib use and tofacitinib concentration, association between blood tofacitinib concentration and Lichtiger index, association between blood tofacitinib concentration and the frequency of side effects

Countries

Japan

Contacts

Public ContactMasaki Takao

Wakayama medical university second department of internal medicine

takao-ma@wakayama-med.ac.jp0734472300

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026