Inhibitor development in patients with congenital factor VII deficiency, a study on 50 Iranian patients.
Blood Coagul Fibrinolysis
; 30(1): 24-28, 2019 Jan.
Article
en En
| MEDLINE
| ID: mdl-30585836
: Congenital factor VII (FVII) deficiency is a rare bleeding disorder with an estimated prevalence of 1 per 500â000 in the general population. On-demand replacement therapy is the main therapeutic choice in patients with congenital FVII deficiency. Inhibitor formation against exogenous FVII is very rare and can cause challenges in the management of the disorder. The present study was conducted to assess the prevalence of FVII inhibitor in 50 patients with congenital FVII deficiency under on-demand or prophylaxis treatment by recombinant activated FVII. All patients with confirmed congenital FVII deficiency were assessed for inhibitor development in regular intervals. Inhibitor titer was determined by a modified Nijmegen-Bethesda assay. The study results were analyzed by SPSS software. Among all cases, two patients (4%) developed an FVII inhibitor. Case 1 was a 14-year-old boy with severe FVII deficiency (FVII activity <1%) with regular prophylaxis. The patient was a high-responder with high-titer FVII inhibitor (170âBethesda Unit). This patient, who had a history of intracranial hemorrhage, had undergone brain surgery three times. The second patient was a 70-years old man with on-demand therapy that also developed a high-titer inhibitor (10âBethesda Unit). This patient had experienced easy bruising and endured a few surgeries for his brain tumor and, finally, succumbed to the disease. Although the inhibitor formation is a rare phenomenon, it may result in a significant challenge to manage the affected patients.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Factor VII
/
Deficiencia del Factor VII
/
Formación de Anticuerpos
Tipo de estudio:
Etiology_studies
/
Risk_factors_studies
Límite:
Adolescent
/
Aged
/
Humans
/
Male
País/Región como asunto:
Asia
Idioma:
En
Revista:
Blood Coagul Fibrinolysis
Asunto de la revista:
ANGIOLOGIA
/
HEMATOLOGIA
Año:
2019
Tipo del documento:
Article
Pais de publicación:
Reino Unido