title: Budd-Chiari Syndrome in a Patient with JAK-2 V617F and Factor V G1691A Mutations.
abstract: Myeloproliferative neoplasms (MPN) are considered a risk factor for Budd-Chiari syndrome (BCS). The current classification of MPN by the World Health Organization is based on the presence of JAK-2 V617F somatic mutation, which is present in 40 to 60% of patients with BCS. Factor V Leiden mutation is found in around 53% of patients with BCS, representing the most common prothrombotic disease associated with the disorder. We describe a 48-year old woman with a past medical history of deep venous thrombosis in the left upper extremity and one episode in both lower extremities, one episode of transient ischaemic attack and essential thrombocythemia, who presented with jaundice, ascites and hepatomegaly. Budd-Chiari syndrome was diagnosed based on findings on Doppler ultrasound and liver biopsy. Doppler ultrasound showed narrowness of hepatic veins and inferior vena cava in its hepatic portion, diffuse echotexture and portal hypertension. Liver biopsy showed congestion of sinusoids and portal fibrosis. The patient was found to be a heterozygous carrier of Factor V and homozygous wild type G20210A prothrombin mutations. The JAK-2 V617F mutation was detected by allele-speciﬁc polymerase chain reaction (AS-PCR). The association of these mutations is rare, with only a few cases reported in the literature. The patient was treated with oral anticoagulation and antiplatelets with good results and proper follow-up. In conclusion, due to the possible coexistence of multiple prothrombotic factors in patients with Budd-Chiari syndrome, the approach to these patients must be focussed on searching for multiple factors and should include the JAK-2 V617F mutation.
authors.affiliation: Centro de Medicina Genómica, Hospital General de Culiacán, "Bernardo J Gastélum", Culiacán, Sinaloa, México.|Cuerpo Académico Immunogenética y Evolución, Unidad Académica Escuela de Biología, Universidad Autónoma de Sinaloa, Culiacán, Sinaloa, México.
authors.forename: J S
authors.initials: JS
authors.lastname: Velarde-Félix
authors.affiliation: Cuerpo Académico Immunogenética y Evolución, Unidad Académica Escuela de Biología, Universidad Autónoma de Sinaloa, Culiacán, Sinaloa, México.
authors.forename: J
authors.initials: J
authors.lastname: Sanchez-Zazueta
authors.affiliation: Jersey City Medical Center, Department of Internal Medicine, New Jersey, USA.
authors.forename: F P
authors.initials: FP
authors.lastname: Gonzalez-Ibarra
authors.affiliation: Departamento de Hematología, CIDOCS, Hospital Civil de Culiacán, Culiacán, Sinaloa, México.
authors.forename: J A
authors.initials: JA
authors.lastname: González-Valdez
authors.affiliation: Centro de Medicina Genómica, Hospital General de Culiacán, "Bernardo J Gastélum", Culiacán, Sinaloa, México.
authors.forename: B
authors.initials: B
authors.lastname: Salcido-Gómez
authors.affiliation: Departamento de Gastroenterología, Hospital General de Culiacán, "Bernardo J Gastélum", Culiacán, Sinaloa, México.
authors.forename: E
authors.initials: E
authors.lastname: Gallardo-Angulo
authors.affiliation: Departamento de Investigación, Hospital de la Mujer, Culiacán, Sinaloa, México.
authors.forename: J
authors.initials: J
authors.lastname: Murillo-Llanes