Results: 17

Avaliação do status mutacional do éxon 15 do BRAF e sua relação com fatores prognósticos histopatológicos no melanoma acral de pacientes de instituição referência em oncologia
Evaluation of the mutational status of BRAF exon 15 and its relationship with histopathological prognostic factors in acral melanoma patients from a reference oncology institution

INTRODUÇÃO: Melanoma é a neoplasia cutânea mais letal. O melanoma acral é um subtipo de melanoma, definido como melanoma de palmas, de plantas e da região subungueal, sendo o tipo de melanoma cutâneo com pior prognóstico. Os melanomas devem ser testados para mutação no gene BRAF, devido à exis...

Growth hormone receptor gene polymorphism. Spontaneous catch up growth in small for gestational age patients

Medicina (B.Aires); 81 (4), 2021
Abstract The growth hormone receptor (GHR) mediates the effect of growth hormone (GH) on linear growth and metabolism. In humans, it exists as two isoforms differing by the retention or exclusion of exon 3; a full-length GHR isoform (GHRfl) and the exon 3-deleted isoform (GHRd3). The genotypic frequency ...

Which Tyrosine Kinase Inhibitor Must We Apply Before? A Case Report of Crizotinib-resistant Patient with Concomitant EGFR and EML4-ALK Gene Mutations

West Indian med. j; 69 (3), 2021
ABSTRACT The concomitant epidermal growth factor receptor (EGFR) mutation and anaplastic lymphoma kinase (ALK) translocations in lung adenocancers are very rare scenarios. Until now, 42 cases described in the literature have all been treated by different drugs. There is no overall consensus regarding the...

Association of the polymorphism Exon 1 (A/O) region of the mannose-binding lectin gene and periportal fibrosis regression in schistosomiasis after specific treatment

Abstract INTRODUCTION: We evaluated the association between genetic polymorphisms in exon 1 (A/O alleles) and promoter regions at positions -550 (H/L variant, rs11003125) and -221 (X/Y variant, rs7096206) MBL2 and periportal fibrosis regression. METHODS: This was a retrospective cohort study involvin...

Complete screening of exons 2, 3, and 4 of kras and nras genes reveals a higher number of clinically relevant mutations than food and drug administration quantitative polymerase chain reaction-based commercial kits

Rev. invest. clín; 72 (6), 2020
Abstract Background: The presence of clinically relevant mutations in KRAS and NRAS genes determines the response of anti-epidermal growth factor receptor antibody therapy for metastatic colorectal cancer (mCRC). The only quantitative polymerase chain reaction (qPCR)-based diagnostic tests approved by t...

Nova mutação no gene STAT1 associada com candidíase mucocutânea crônica

Mutações no gene STAT1 (signal transducer and activator of transcription 1) têm sido identificadas como responsáveis pela maioria dos casos sindrômicos da candidíase mucocutânea crônica com herança autossômica dominante (AD). Nesse artigo, descrevemos uma menina de 7 anos que apresentou candid�...

Hipercalcemia hipocalciúrica familiar: Descripción de un caso

Arch. argent. pediatr; 116 (6), 2018
La presencia de hipercalcemia mantenida obliga a realizar pruebas complementarias para determinar su origen. Es benigna y, generalmente, no requiere tratamiento. La secuenciación del gen CaSR confirma el diagnóstico y evita tratamientos innecesarios. Se presenta a un niño de 12 años, asintomático, c...

No detection of c-kit gene mutations in exons 9, 11, 13 and 17 and low CD117 expression in plaque-stage mycosis fungoides

An. bras. dermatol; 93 (6), 2018
Abstract: The growth factor receptor c-kit (CD117) is expressed in immature T-cells and in some advanced forms of mycosis fungoides. c-kit gene mutation results in unrestricted neoplastic proliferation. We aimed to detect by PCR the most frequent exon mutations in seventeen plaque-stage MF patients, in t...

Estudio molecular del exón 3 del gen atp7b en pacientes cubanos con Enfermedad de Wilson
Molecular genetic analysis of exon 3 of the ATP7B gene in Cuban patients with Wilson's disease

Introducción: La Enfermedad de Wilson es una enfermedad con patrón de herencia autosómico recesivo. Es causada por las mutaciones en el gen atp7b. El exón 3 del gen atp7b es polimórfico y se informan más de 120 polimorfismos en el gen atp7b. Objetivo: Identificar los cambios conformacionales en ...

Asociación entre la mutación homocigota c.318A>T en el exón 2 del gen EIF2B5 y la forma infantil de la leucoencefalopatía con sustancia blanca evanescente

Resumen: Introducción: La leucoencefalopatía con sustancia blanca evanescente es una de las leucodistrofias más frecuentes. Generalmente inicia en la infancia y presenta un patrón de herencia autosómica recesiva. El 90% de los casos manifiesta mutaciones en uno de los genes que codifican para las ...