HLADQA1*05 Genotype and the Efficacy of Treatment With Infliximab in Chinese Population Crohn's Disease

NCT05813860 | Not Yet Recruiting Phase 4

• 1 other identifier: 2023ZSLYEC-123
• Study Type: interventional
• Target: 976
• Locations: 0 countries
• Sites: N/A

Brief Summary

Crohn's disease (CD) is a chronic non-specific inflammatory disease of the intestine. Infliximab (IFX) is a kind of one of the anti-tumor necrosis factor agents (anti-TNF) and is the main clinical treatment drug for Crohn's disease, but approximately 30-50% of patients develop a secondary non-response to respond within one year. The main cause of secondary non-response failure is the formation of anti-IFX anti-drug antibodies (ADA). The human leukocyte antigen (HLA) gene is a complex allele that has been associated with susceptibility to a variety of diseases. Studies have shown that HLADQA1\*05 allele carriage significantly increases the immunogenicity of anti-tumor necrosis factor agents (anti-TNF) and the risk of ADA formation, resulting in a significant reduction in the efficacy of IFX. Our previous retrospective study found an increased risk of ADA, IFX failure to respond and discontinuation in patients with HLADQA1\*05 variants, and that IFX in combination with immunosuppression improved clinical outcomes in wild-type genotype patients, whereas combination therapy in patients with variant genotype did not optimize clinical outcomes significantly. Therefore, we believe that the impact of HLADQA1\*05 on the efficacy of IFX in the Chinese population is unclear, and the combination of immunosuppressants in patients with variant HLADQA1\*05 genotype remains to be validated due to insufficient sample size. We hypothesized that HLADQA1\*05 wild-type CD patients would have better clinical remission when treated with IFX than HLADQA1\*05 variant patients and that the combination of immunosuppressants would improve the outcome in wild-type patients but not in variant patients. By advancing this project, we hope to provide high quality evidence on the clinical use of IFX in Crohn's disease in the Chinese population and help physicians to be more selective in the use of IFX alone or in combination with azathioprine, or to switch treatment in a timely manner.

Conditions

Crohn Disease; Infliximab

Outcome Measures

Primary Outcomes (1)

• Clinical remission without corticosteroid use at 102 weeks

  CDAI score below 150 and no systemic corticosteroids at any dose or Budesonide ≥ 3 weeks.

  102 weeks

Secondary Outcomes (6)

• Clinical response at 14 weeks

  14 weeks

• Positive for ADA

  102 weeks

• IFX Intensive Therapy

  102 weeks

• IFX Failure to Respond

  102 weeks

• Adverse drug events

  102 weeks

Study Arms (2)

Infliximab

EXPERIMENTAL

Infliximab monotherapy, the first dose of 5 mg/kg of this product is provided, followed by the same dose at weeks 2 and 6 after the first dose and every 8 weeks thereafter.

Drug: Infliximab

Infliximab+azathioprine

ACTIVE COMPARATOR

Infliximab was given in combination with azathioprine, and Infliximab dosing was the same as in the experimental group, with azathioprine at 1-2 mg/kg/d.

Drug: Azathioprine; Drug: Infliximab

Interventions

Azathioprine DRUG

azathioprine in combination with Infliximab, with a dose of 1-2 mg/kg/d.

Infliximab+azathioprine

Infliximab DRUG

5mg/kg for the first dose, and the same dose at weeks 2 and 6 after the first dose and every 8 weeks thereafter. Treatment with single Infliximab or combined azathioprine, respectively.

Infliximab; Infliximab+azathioprine

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Participants with Crohn's disease who meet the diagnostic criteria of the Consensus Opinion on the Diagnosis and Treatment of Inflammatory Bowel Disease (Beijing, 2018)
• Meet the indications for IFX use
• CDAI score of 220-450; age≥18 years, regardless of gender
• Participants or family members able to understand the study protocol and willing to participate in this study by providing written informed consent

You may not qualify if:

• NUDT 15 CT and TT genotypes; previous treatment with IFX and/or other anti-TNF biologics
• Participants who are proposed to have given birth and/or breastfeeding in the 12 months
• those with immunosuppressive intolerance or contraindications
• concurrent chronic diseases or factors of other systems (including severe cardiopulmonary, hepatic and renal, neurological, psychiatric, rheumatic and immune diseases, alcoholism, drug dependence, other chronic active diseases and long-term hormonal or immunosuppressive drugs)
• Excluding infectious diseases (tuberculosis, etc.)
• Excluding tumor-related diseases (lymphoma, gastrointestinal tract tumors, etc.)
• any medical condition/combined surgery/medication/other clinically significant abnormal laboratory tests which, in the judgment of the investigator, may affect the results of the test
• Known refusal or inability to follow protocol requirements for any reason (including planned clinical visits and examinations)

Sponsors & Collaborators

• Sixth Affiliated Hospital, Sun Yat-sen University: lead

MeSH Terms

Conditions

Crohn Disease

Interventions

Azathioprine; Infliximab

Condition Hierarchy (Ancestors)

Inflammatory Bowel Diseases; Gastroenteritis; Gastrointestinal Diseases; Digestive System Diseases; Intestinal Diseases

Intervention Hierarchy (Ancestors)

Thionucleosides; Sulfur Compounds; Organic Chemicals; Mercaptopurine; Purines; Heterocyclic Compounds, 2-Ring; Heterocyclic Compounds, Fused-Ring; Heterocyclic Compounds; Nucleosides; Nucleic Acids, Nucleotides, and Nucleosides; Antibodies, Monoclonal; Antibodies; Immunoglobulins; Immunoproteins; Blood Proteins; Proteins; Amino Acids, Peptides, and Proteins; Serum Globulins; Globulins

Study Design

• Study Type: interventional
• Phase: phase 4
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: April 3, 2023
• First Posted: April 14, 2023
• Study Start: April 30, 2023
• Primary Completion (Estimated): May 31, 2026
• Study Completion (Estimated): October 31, 2026
• Last Updated: May 9, 2023

Record last verified: 2023-05