Category archives: Neurogenetics
Symptoms that increase the probability of diagnosis in NGS (yield).
Next-generation sequencing (NGS) studies present variable diagnostic yields depending on the clinical characteristics of the patient. Certain symptoms and phenotypic findings have been consistently associated with a higher likelihood of obtaining a definitive genetic diagnosis. These include intellectual disability, multiple congenital malformations, early-onset epilepsy, disorders...
Continue reading «Síntomas que incrementan la probabilidad de diagnóstico en NGS (yield).»
ARX gen.
CdL facial phenotypes.
Facial Phenotypes in Cornelia de Lange Syndrome (CdLS) Cornelia de Lange syndrome (CdLS) is associated with a characteristic facial dysmorphic pattern that facilitates its clinical diagnosis: Synophridia: Very well-defined eyebrows, arched and united in the midline, along with unusually long eyelashes. Nasal anomalies: Short nose with depressed nasal bridge,…
Table of diseases in genereviews.
SCNx database.
https://scn-portal.broadinstitute.org
Clinical indicators of genetic PCI.
Table 2. Overview of Indicators for Genetic Cerebral Palsy Strong Moderate Possible 1.Dyskinesia2.Absence of spasticity3.Consanguinity∗4.Positive family history∗ 1. Intellectual disability2. Absence of preterm birth3. No unilateral symptoms 1. Absence of perinatal risk factors2. Visual impairment3. Microcephaly ∗ Well-known genetic indicator; comparison with reference population was not possible because it was not reported in cerebral palsy literature.
Clinical exome, first tier?
Technological evolution in genomics has a very fast speed and clinical guidelines become obsolete with respect to usual clinical practice, so that professionals frequently find themselves with questions that are difficult to answer. Much has happened since the 2003 AAN guidelines, in which it was proposed as the first step...
ACMG pathogenicity criteria.
ACMG (American College of Medical Genetics and Genomics) Pathogenicity Criteria The criteria established by the ACMG and the AMP (Association for Molecular Pathology) guide the classification and clinical interpretation of genetic variants identified in molecular studies: Pathogenic: Overwhelming scientific evidence demonstrating that the variant causes the disease. Probably Pathogenic: High probability…
Indication of cosegregation.
Carrying out cosegregation studies has 2 main uses: Example: Variant classified as probably pathogenic, which after applying the PS2 criterion is reclassified as pathogenic. Example 2: Probably pathogenic variant that is reclassified as pathogenic.