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  • Title: Inherited risk factors for thrombophilia among children with Legg-Calvé-Perthes disease.
    Author: Arruda VR, Belangero WD, Ozelo MC, Oliveira GB, Pagnano RG, Volpon JB, Annichino-Bizzacchi JM.
    Journal: J Pediatr Orthop; 1999; 19(1):84-7. PubMed ID: 9890294.
    Abstract:
    An inherited tendency to hypercoagulability has been suggested as a cause of vascular thrombosis resulting in Legg-Calvé-Perthes disease (LCPD). Here we carried out an investigation of the most common inherited risk factors for hypercoagulability including the mutation in the factor V gene (factor V Leiden), the transition 20.210G-->A in the prothrombin gene, and also the homozygosity for the 677C-->T transition in the methylenetetrahydrofolate reductase gene (MTHFR). The investigation was carried out among 61 Brazilian children with LCPD, who were compared with 296 individuals from the general population. The prevalence of the factor V Leiden mutation was higher in LCPD patients than in the controls (4.9 vs. 0.7%; p = 0.03). However, no patient had the prothrombin gene variant, and no difference was found between patients and controls when homozygosity for MTHFR-T (3.2 vs. 2.6%: p = 0.64) was determined. These data suggest that in our population, the heterozygosity for factor V Leiden was the only inherited risk factor associated with the development of LCPD.
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