New Genetic Variants Linked to Congenital Hypothyroidism
Author Information
Author(s): Carro Gerardo Hernán, Martín Mariano, Savy Sofía, Peyret Victoria, Geysels Romina Celeste, Montes Francisco Andrés, Bernal Barquero Carlos Eduardo, Ricci Valentina, Masnata María Eugenia, Masini-Repiso Ana María, Papendieck Patricia, Tellechea Mariana Lorena, Chiesa Ana Elena, Nicola Juan Pablo
Primary Institution: Universidad Nacional de Córdoba, Córdoba, Argentina
Hypothesis
Can novel pathogenic SLC5A5 gene variants be identified and functionally characterized in a patient with congenital dyshormonogenic hypothyroidism?
Conclusion
The study identifies novel compound heterozygous missense SLC5A5 gene variants that cause defective iodide accumulation, leading to congenital dyshormonogenic hypothyroidism.
Supporting Evidence
- The study identified a novel pair of compound heterozygous missense variants in the SLC5A5 gene.
- The p.G543R variant has been previously associated with congenital hypothyroidism.
- The novel p.L562M variant was not reported in the Genome Aggregation Consortium dataset.
- Functional studies showed that the p.L562M variant reduces iodide accumulation due to defective expression of the mutant NIS protein.
Takeaway
This study found new genetic changes in a patient that prevent their body from properly using iodide, which is important for making thyroid hormones.
Methodology
Whole-exome sequencing was used to identify gene variants, followed by in silico analysis and in vitro functional characterization.
Limitations
The study is based on a single patient, which may limit the generalizability of the findings.
Participant Demographics
The participant was a full-term female infant born to non-consanguineous Caucasian parents.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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