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Targeted Gene Panel Sequencing for Early-Onset Inflammatory Bowel Disease and Chronic Diarrhea Publisher Pubmed



Petersen BS1 ; August D2 ; Abt R3 ; Alddafari M4 ; Atarod L5 ; Baris S6 ; Bhavsar H7 ; Brinkert F8 ; Buchta M2 ; Bulashevska A2 ; Chee R9 ; Cordeiro AI10 ; Dara N11 ; Duckers G12 Show All Authors
Authors
  1. Petersen BS1
  2. August D2
  3. Abt R3
  4. Alddafari M4
  5. Atarod L5
  6. Baris S6
  7. Bhavsar H7
  8. Brinkert F8
  9. Buchta M2
  10. Bulashevska A2
  11. Chee R9
  12. Cordeiro AI10
  13. Dara N11
  14. Duckers G12
  15. Elmarsafy A13
  16. Frede N2
  17. Galal N13
  18. Gerner P14
  19. Glocker EO15, 38
  20. Goldacker S2
  21. Hammermann J16
  22. Hasselblatt P17
  23. Havlicekova Z18
  24. Hubscher K2
  25. Jesenak M18
  26. Karaca NE19
  27. Karakocaydiner E6
  28. Kharaghani MM20
  29. Kilic SS21
  30. Kiykim A6
  31. Klein C22
  32. Klemann C23, 24
  33. Kobbe R8
  34. Kotlarz D22
  35. Laass MW16
  36. Leahy TR25
  37. Mesdaghi M26
  38. Mitton S27
  39. Neves JF10
  40. Ozturk B28
  41. Pereira LF29
  42. Rohr J2
  43. Restrepo JLR2
  44. Ruzaike G30
  45. Saleh N31
  46. Seneviratne S32
  47. Senol E28
  48. Speckmann C2
  49. Tegtmeyer D14
  50. Thankam P33
  51. Van Der Werff Ten Bosch J34
  52. Von Bernuth H35
  53. Zeissig S36, 37
  54. Zeissig Y16
  55. Franke A1
  56. Grimbacher B2

Source: Inflammatory Bowel Diseases Published:2017


Abstract

Background: In contrast to adult-onset inflammatory bowel disease (IBD), where many genetic loci have been shown to be involved in complex disease etiology, early-onset IBD (eoIBD) and associated syndromes can sometimes present as monogenic conditions. As a result, the clinical phenotype and ideal disease management in these patients often differ from those in adult-onset IBD. However, due to high costs and the complexity of data analysis, high-throughput screening for genetic causes has not yet become a standard part of the diagnostic work-up of eoIBD patients. Methods: We selected 28 genes of interest associated with monogenic IBD and performed targeted panel sequencing in 71 patients diagnosed with eoIBD or early-onset chronic diarrhea to detect causative variants. We compared these results to whole-exome sequencing (WES) data available for 25 of these patients. Results: Target coverage was significantly higher in the targeted gene panel approach compared with WES, whereas the cost of the panel was considerably lower (approximately 25% of WES). Disease-causing variants affecting protein function were identified in 5 patients (7%), located in genes of the IL10 signaling pathway (3), WAS (1), and DKC1 (1). The functional effects of 8 candidate variants in 5 additional patients (7%) are under further investigation. WES did not identify additional causative mutations in 25 patients. Conclusions: Targeted gene panel sequencing is a fast and effective screening method for monogenic causes of eoIBD that should be routinely established in national referral centers. © 2017 Oxford University Press. All rights reserved.
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