Costo-efectividad de la prueba de secuenciación del gen CFTR para portadores asintomáticos en la población colombiana
2020
Introduction: Cystic fibrosis is an autosomal recessive genetic disease classified as a highcost orphan disease. Objective: To determine the cost-effectiveness ratio of the diagnostic test for the CFTR gene-sequencing in asymptomatic family carriers in the first, second, and third degree of consanguinity. Materials and methods: We conducted a systematic search evaluating operative characteristics of the diagnostic test and decision-tree models in cost-effectiveness studies. A decision-tree model was elaborated taking prevention of future conceptions as a unit of analysis. We obtained the costs of the disease from the high-cost report of the Ministerio de Salud y Proteccion Social. The costs of the test were referenced by national laboratories. We carried out a deterministic and probabilistic sensitivity analysis with a third-payer perspective and a one-year horizon. Results: An ICER of USD$ 5051.10 was obtained as the incremental cost for obtaining 10.89% more probability of avoiding the birth of a child with cystic fibrosis per screened couple. For family members in second and third degrees, the ICER was USD$ 19,380.94 and USD$ 55,913.53, respectively, evidenced when applying the GDP per capita. This technology was cost-effective in 39%, 61.18%, and 74.36% for 1, 2, and 3 GDP per capita in first degree of consanguinity relatives. Conclusions: The genetic test for the detection of CFTR gene carriers was cost-effective depending on the threshold of availability to pay and the assumptions and limitations established in the model.
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