A new modeling approach allowing prediction and comparison of the long-term outcomes of treatments for hemophilia B
Keep, M. V., Hoxer, C. S., Hemstock, M., Groth, A. V., & Knight, C. (2018). A new modeling approach allowing prediction and comparison of the long-term outcomes of treatments for hemophilia B. Journal of Comparative Effectiveness Research, 7(1), 39-48. DOI: 10.2217/cer-2017-0028
AIM: To develop a modeling approach to compare clinical outcomes of nonacog beta pegol to a standard-acting factor IX (FIX) product.
METHODS: Regression analysis linked FIX activity to bleed rates. Pharmacokinetic parameters were used to estimate FIX activity over time. The probability of bleeds was estimated for both treatment arms. A Markov model estimated the presence of target joints and annualized bleed rates (ABRs).
RESULTS: Higher FIX activity showed reduced ABRs (p < 0.001). Target joints resulted in higher bleed rates (p < 0.001). When FIX activity levels and bleed risks were applied to the Markov model, ABRs for nonacog beta pegol and its comparator were 2.40 and 6.36, respectively.
CONCLUSION: This model provides a starting point for assessing the added value of new FIX products.