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Thématique :
- Foie
Originalité :
Très original
Solidité :
A confirmer
Doit faire évoluer notre pratique :
Pas encore
 
 
Nom du veilleur :
Professeur Christine SILVAIN
Coup de coeur :
 
 
Hepatology
  2018/04  
 
  2018 Apr;67(4):1224-1236.  
  doi: 10.1002/hep.29658.  
 
  Optimizing lonafarnib treatment for the management of chronic delta hepatitis: The LOWR HDV-1 study.  
 
  Yurdaydin C, Keskin O, Kalkan Ç, Karakaya F, Çalişkan A, Karatayli E, Karatayli S, Bozdayi AM, Koh C, Heller T, Idilman R, Glenn JS  
  https://www.ncbi.nlm.nih.gov/pubmed/29152762  
 
 

Abstract

In a proof-of-concept (POC) study, the oral prenylation inhibitor, lonafarnib (LNF), decreased hepatitis D virus (HDV) RNA during 4 weeks of treatment. Here, we explored optimal LNF regimens. Fifteen patients (five groups; 3 per group) completed dosing as follows: (1) LNF 200 mg twice-daily (BID; 12 weeks); (2) LNF 300 mg BID (12 weeks); (3) LNF 100 mg thrice-daily (5 weeks); (4) LNF 100 mg BID + pegylated interferon alfa (PEG-IFNα) 180 μg once-weekly (QW; 8 weeks); and (5) LNF 100 mg BID + ritonavir (RTV) 100 mg once-daily (QD; 8 weeks). Tolerability and efficacy were assessed. Higher LNF monotherapy doses had greater decreases in HDV viral load than achieved in the original POC study. However, this was associated with increased gastrointestinal adverse events. Addition of RTV 100 mg QD to a LNF 100 mg BID regimen yielded better antiviral responses than LNF 300 mg BID monotherapy and with less side effects. A similar improvement was observed with LNF 100 mg BID + PEG-IFNα 180 μg QW. Two of 6 patients who received 12 weeks of LNF experienced transient posttreatment alanine aminotransferase (ALT) increases resulting in HDV-RNA negativity and ALT normalization.

CONCLUSION:

The cytochrome P450 3A4 inhibitor, RTV, allows a lower LNF dose to be used while achieving higher levels of postabsorption LNF, yielding better antiviral responses and tolerability. In addition, combining LNF with PEG-IFNα achieved more substantial and rapid HDV-RNA reduction, compared to historical responses with PEG-IFNα alone. Twelve weeks of LNF can result in posttreatment HDV-RNA negativity in some patients, which we speculate results from restoring favorable immune responses. These results support further development of LNF with RTV boosting and exploration of the combination of LNF with PEG-IFN. (Hepatology 2018;67:1224-1236).

 

 
Question posée
 
Quelle dose, quelle durée, quelle tolérance du traitement par lonafarnib (LNF), inhibiteur oral de prenylation, seul ou associé à l’IFN pégylé alpha ou au ritonavir pour le traitement de l’hépatite delta ?
 
Question posée
 
L’association du lonafarnib avec le ritonavir permet de diminuer les doses de lonafarnib permettant à la fois une meilleure tolérance et une plus grande efficacité. L’association avec l’IFN pégylé alpha permet en plus une réduction plus rapide de l’ARN du VHD.
 
Commentaires

Lonafarnib/ritonavir/IFN pégylé: un espoir à moyen terme?

 
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