title: Inflammatory bowel disease: an emergent disease among Ethiopian Jews migrating to Israel.
abstract: BACKGROUND
  The development and characteristics of inflammatory bowel disease (IBD) in Ethiopian Jewish immigrants to Israel were investigated.
  
  
  METHODS
  A case-control study was conducted in 7 tertiary care hospitals in Israel. Patients of Ethiopian origin with IBD >6 months were included. Time of disease onset after immigration and age at diagnosis were recorded. Randomly chosen patients with IBD of Ashkenazi Jewish origin served as controls. Demographics and clinical parameters were compared between the 2 cohorts.
  
  
  RESULTS
  Thirty-two Ethiopian patients with IBD were compared with 33 Ashkenazi Jewish patients with IBD. Crohn's disease (CD) was more prevalent than ulcerative colitis (UC) in the Ethiopian group compared with the Ashkenazi group (94% versus 73%, P = 0.02). No Ethiopian-origin patient had a positive family history of IBD compared with 42% of Ashkenazi-origin patients (P < 0.001). Arthritis was more common in Ashkenazi than in Ethiopian patients (27% versus 3%, P < 0.01). One Ashkenazi patient with CD had upper gastrointestinal involvement compared with 7 (23%) in the Ethiopian group (P < 0.02). All other clinical measures were similar between the 2 cohorts. The Ethiopian group lived in Israel with a mean of 13 ± 5 years, and 75% were born in Ethiopia. The shortest time between immigration and developing IBD was 8 years (range, 8-26; median 16 yrs). No Ethiopian patient was diagnosed before immigration.
  
  
  CONCLUSIONS
  Ethiopian Jews migrating to Israel are at risk of developing IBD. Larger cohorts are needed to determine the relative importance of environmental and genetic factors that cause IBD in these patients.
authors.affiliation: *Digestive Diseases Institute, Shaare Zedek Medical Center, Hebrew University Medical School, Jerusalem, Israel; †Department of Gastroenterology, Kaplan Medical Center, Rehovot, Israel; ‡Department of Gastroenterology, Hadassah Medical Center, Jerusalem, Israel; §Department of Gastroenterology, Sheba Medical Center, Tel HaShomer, Israel; ‖Department of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel; ¶Department of Gastroenterology and Hepatology, Soroka University Medical Center, Beer Sheva, Israel; and **Department of Gastroenterology, Rambam Medical Center, Haifa, Israel.
authors.forename: Ariella
authors.initials: A
authors.lastname: Bar-Gil Shitrit
authors.forename: Benjamin
authors.initials: B
authors.lastname: Koslowsky
authors.forename: Michal
authors.initials: M
authors.lastname: Kori
authors.forename: Kalman
authors.initials: K
authors.lastname: Paz
authors.forename: Tomer
authors.initials: T
authors.lastname: Adar
authors.forename: Eran
authors.initials: E
authors.lastname: Israeli
authors.forename: Shomron
authors.initials: S
authors.lastname: Ben-Horin
authors.forename: Tania
authors.initials: T
authors.lastname: Berdichevski
authors.forename: Daniel
authors.initials: D
authors.lastname: Coscas
authors.forename: Eyal
authors.initials: E
authors.lastname: Gal
authors.forename: Shmuel
authors.initials: S
authors.lastname: Odes
authors.forename: Ron
authors.initials: R
authors.lastname: Shaul
authors.forename: Ami
authors.initials: A
authors.lastname: Ben-Ya'acov
authors.forename: Eran
authors.initials: E
authors.lastname: Goldin
mesh_terms: D000293:Adolescent; D000328:Adult; D016022:Case-Control Studies; D002648:Child; D015331:Cohort Studies; D005260:Female; D006801:Humans; D015212:Inflammatory Bowel Diseases / Q000453:epidemiology*; D007557:Israel / Q000453:epidemiology; D007585:Jews / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D011379:Prognosis; D055815:Young Adult