SNFGE SNFGE
 
Thématique :
- MICI
Originalité :
Intermédiaire
Solidité :
Très solide
Doit faire évoluer notre pratique :
Dans certains cas
 
 
Nom du veilleur :
Professeur Philippe SEKSIK
Coup de coeur :
 
 
Gastroenterology
  2017/06  
 
  2017 Jun;152(8):1901-1914.e3  
  doi: 10.1053/j.gastro.2017.02.004  
 
  Infliximab Is Not Associated With Increased Risk of Malignancy or Hemophagocytic Lymphohistiocytosis in Pediatric Patients With Inflammatory Bowel Disease  
 
  Hyams JS, Dubinsky MC, Baldassano RN, Colletti RB, Cucchiara S, Escher J, Faubion W, Fell J, Gold BD, Griffiths A, Koletzko S, Kugathasan S, Markowitz J, Ruemmele FM, Veereman G, Winter H, Masel N, Shin CR, Tang KL, Thayu M  
  https://www.ncbi.nlm.nih.gov/pubmed/28193515  
 
 

Abstract

BACKGROUND AND AIMS:

Immunosuppressive therapy for inflammatory bowel disease (IBD) in pediatric patients is thought to increase the risk of malignancy and lymphoproliferative disorders, including hemophagocytic lymphohistiocytosis (HLH). We compared unadjusted incidence rates of malignancy and HLH in pediatric patients with IBD exposed to infliximab (IFX) with patients not exposed to biologics and calculated standardized incidence ratios (SIRs).

METHODS:

We collected and analyzed data from 5766 participants in a prospective study of long-term outcomes of pediatric patients with IBD (NCT00606346), from May 31, 2007 through June 30, 2016. Patients were 17 years old or younger and had Crohn's disease, ulcerative colitis, or IBD-unclassified with 24,543.0 patient-years of follow-up. We estimated incidence rates for malignancy and HLH as events/1000 patient-years of follow-up. We calculated age-, sex-, and race-adjusted SIRs, with 95% confidence intervals (CIs), using the Surveillance, Epidemiology, and End Results Program (SEER) database.

RESULTS:

Thirteen of the 15 patients who developed a malignancy and all 5 of the patients who developed HLH had been exposed to thiopurines; 10 patients with malignancy had also been exposed to a biologic agent. Unadjusted incidence rates showed no increased risk of malignancy (0.46/1000 patient-years) or HLH (0.0/1000 patient-years) in patients exposed to IFX as the only biologic vs those unexposed to biologics (malignancy: 1.12/1000 patient-years; HLH: 0.56/1000 patient-years). SIRs did not demonstrate an increased risk of malignancy among patients exposed to IFX (SIR, 1.69; 95% CI, 0.46-4.32) vs patients not exposed to a biologic agent (SIR, 2.17; 95% CI, 0.59-5.56), even when patients were stratified by thiopurine exposure.

CONCLUSIONS:

In determination of age-, sex-, and race-adjusted SIRs using data from a large clinical study and the SEER database, we found that IFX exposure did not associate with increased risk of malignancy or HLH in pediatric patients with IBD. Thiopurine exposure is an important precedent event for the development of malignancy or HLH in pediatric patients with IBD.

 

 
Question posée
 
Chez l’enfant ayant une MICI, l’infliximab expose-t-il au risque de cancer et de syndrome d’activation macrophagique (SAM)?
 
Question posée
 
Non.
 
Commentaires

Dans une population de plus de 5700 enfants ayant une MICI, l’analyse rétrospective des 24543 patient-années n’a pas montré de sur-risque de cancer ou de SAM induit par l’infliximab. L’exposition aux thiopurines en revanche reste un facteur majeur même si cette dernière question n’était pas l’objet de l’étude.

 
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