Study to Determine Relationship Between Serum Infliximab and Efficacy in Luminal Crohn's Disease Patients

A Cross Sectional Study To Determine The Relationship Between Serum Infliximab Concentration And Efficacy In Patients With Luminal Crohn's Disease

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT00676988

Acronym

X-Sectional

Enrollment

327

Registered

2008-05-13

Start date

2008-05-31

Completion date

2011-04-30

Last updated

2012-06-14

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

Conditions

Crohn's Disease

Keywords

Luminal Crohn's Disease, Infliximab

Brief summary

To assess the relationship between the change in Crohn's Disease Activity Index (CDAI) scores and trough serum infliximab concentration in subjects who are scheduled to receive infliximab infusions at an interval of 8 weeks.

Detailed description

This cross sectional study will evaluate a sample of 360 subjects with luminal Crohn's disease who are receiving infliximab in 15-20 Canadian infusion centres. The sample will be stratified by disease activity \[mild = CDAI \<150, moderate/severe = CDAI ≥150\] and whether or not subjects are on concomitant immunosuppressive therapy. Thus 4 strata will be created consisting of 90 subjects each. Consent will be obtained prior to or at Visit 1, subjects will retrospectively complete a CDAI diary card for the preceding 7 days and blood work will be drawn prior to infliximab infusion. Four weeks thereafter at Visit 2, subjects will provide an additional blood sample to measure serum infliximab concentrations and CRP levels. Between Visits 1 and 3, subjects will complete daily CDAI diary entries. Visit 3 will take place at the next scheduled infusion, 8 weeks after Visit 1 (+/- 7 days ).

Interventions

None listed

Study design

Observational model

CASE_ONLY

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

* Adult subjects (18 years of age or older at time of consent) * Confirmed diagnosis of inflammatory luminal Crohn's Disease * Receive infliximab therapy and have received a minimum of 5 consecutive infusions at prescribed intervals (minimum of 24 weeks and maximum of 156 weeks on infliximab therapy) * Plan to receive the next 2 infliximab infusions at 8-weekly intervals (+/- 7 days) * Able to provide written consent

Exclusion criteria

* Active draining fistulizing Crohn's Disease * Presence of an ostomy * Diagnosis of ulcerative colitis * Infliximab dose of \>5mg/kg

Countries

Canada

Outcome results