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1.
Congenit Anom (Kyoto) ; 56(6): 250-252, 2016 Nov.
Article in English | MEDLINE | ID: mdl-27206652

ABSTRACT

Syndromic microphthalmia-3 is a rare congenital syndrome associated with brain anomalies, esophageal atresia and genital anomalies. This is the case of a 4-year-old male with bilateral microphthalmia, short stature, neurodevelopmental delay, genital anomalies, and maternal exposition to glyphosate during pregnancy. Genetic testing detected a previously reported pathogenic heterozygous mutation in the SOX2 gene, confirming a diagnosis of syndromic microphthalmia-3. Whenever a patient presents bilateral microphthalmia, it is necessary to determine whether it is isolated or syndromic; afterwards, genetic testing should be performed in order to offer an effective genetic counseling.


Subject(s)
Esophageal Atresia/diagnosis , Esophageal Atresia/genetics , Microphthalmos/diagnosis , Microphthalmos/genetics , Mutation , Nervous System Malformations/diagnosis , Nervous System Malformations/genetics , SOXB1 Transcription Factors/genetics , Child, Preschool , Colombia , DNA Mutational Analysis , Heterozygote , Humans , Imaging, Three-Dimensional , Male , Phenotype , Tomography, X-Ray Computed/methods
2.
Rev. Fac. Med. (Bogotá) ; 64(1): 159-164, ene.-mar. 2016. ilus, tab
Article in Spanish | LILACS | ID: lil-779679

ABSTRACT

Antecedentes. La distrofia muscular cintura-cadera tipo 1B es una enfermedad con herencia autosómica dominante y secundaria a una mutación en el gen LMNA. Esta enfermedad se caracteriza por su afectación a nivel neuromuscular y cardiaco. Objetivo. Realizar diagnóstico clínico y confirmatorio molecular en una paciente con debilidad muscular proximal y sintomatología cardíaca a través de secuenciación exómica. Materiales y métodos. Se presenta el caso de una paciente de 57 años de edad con cuadro de debilidad muscular proximal progresiva principalmente en extremidades y posterior afectación cardíaca; adicionalmente, la paciente tiene múltiples familiares con la misma sintomatología. Se realizó estudio de secuenciación exómica con confirmación, por método de Sanger, de la mutación hallada y posteriormente el análisis bioinformático de esta. Resultados. La detección de la mutación R377L en el gen LMNA por secuenciación exómica con confirmación por Sanger, junto con la sintomatología clínica de la paciente y el análisis bioinformático de la mutación hallada, permitió realizar diagnóstico confirmatorio de distrofia muscular cintura-cadera tipo 1B. Conclusión. Es difícil realizar un diagnóstico clínico debido a la heterogeneidad genética del fenotipo de distrofias musculares cintura-cadera. La aproximación diagnóstica es compleja y requiere clasificar las distrofias musculares según el patrón de afectación y el patrón de herencia de la enfermedad. Adicionalmente, debido a los múltiples genes que pueden generar clínica semejante a las diferentes distrofias musculares, se recomienda realizar secuenciación exómica solicitando especial énfasis en los genes candidatos de distrofias musculares cintura-cadera.


Background. Limb-girdle muscular dystrophy type 1B has a dominant autosomal inheritance pattern and is caused by a mutation in the LMNA gene. This disease has a major neuromuscular and cardiac compromise; furthermore, it belongs to the limb-girdle muscular dystrophies. Objective. To make a clinical and molecular confirmatory diagnosis in a patient with proximal muscular weakness and cardiac symptoms using whole exome sequencing. Materials and Methods. This is the case of a 57 year old patient with a slowly progressive proximal muscular weakness and cardiac compromise; furthermore, the patient has many relatives with the same clinical history. Whole exome sequencing with Sanger confirmation and bioinformatics analysis was performed on the found mutation. Results. The detection of mutation R377L in the LMNA gen by whole exome sequencing with Sanger confirmation, the bioinformatic analysis of the mutation and the symptoms exhibited by the patient allowed the confirmatory diagnosis of limb-girdle muscular dystrophy type 1b. Conclusion. Due to genetic heterogeneity in the phenotype of limb-girdle muscular dystrophies it is difficult to make a clinical diagnosis. The diagnostic approach is complex and requires classification of the muscular dystrophies according to the pattern of muscular weakness and to identify the disease inheritance pattern. Additionally, due to the multiple genes that can generate similar symptoms in the different muscular dystrophies, the authors recommend the use of whole exome sequencing with a special emphasis on the candidate genes for limb-girdle muscular dystrophies.

3.
Congenit Anom (Kyoto) ; 56(3): 138-140, 2016 May.
Article in English | MEDLINE | ID: mdl-26603014

ABSTRACT

Focal dermal hypoplasia is a rare genetic disease characterized 8-year-old female who sought genetic counseling for multiple malformations, aggressive behavior and intellectual disability. Gene analysis confirmed focal dermal hypoplasia.

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