From January 2020 to December 2024, Crohn's disease(CD) patients and gender- and age-matched normal controls were collected from the Department of Gastroenterology, the Second Affiliated Hospital of Wenzhou Medical University. The aim of this research is to explore the associations of B-cell activating factor(BAFF) gene polymorphisms with the risk and clinicopathological characteristics of CD.

From January 2020 to December 2024, a total of 310 CD patients and 514 gender- and age-matched normal controls were collected from the Department of Gastroenterology, the Second Affiliated Hospital of Wenzhou Medical University.The genotypes of BAFF were determined by multiplex polymerase chain reaction-ligase detection reaction technique. Unconditional logistic regression was employed to analyze the distribution of BAFF gene polymorphisms between CD group and normal control group, as well as their influences on the clinicopathological characteristics of CD patients.

Inclusion Criteria:

• diagnosed CD based on comprehensive clinical, colonoscopy, histopathological, laboratory, and radiographic examination results

Exclusion Criteria:

• rheumatoid arthritis, systemic lupus erythematosus, intestinal tuberculosis, ischemic enteritis, radiation enteritis, tumors, etc

There was no statistically significant difference in the gender ratio, average age, and proportion of smokers between CD group and normal control group. All study subjects are from the Zhejiang Han population who are not related by blood.