A Dad Took a Cancer Test, Then Came the Result That Changed His Family
Summary
A man in Brazil discovered he had a rare hereditary thyroid cancer caused by a gene mutation called RET. This finding led him to test his children, who also carried the mutation, and they had preventive thyroid removal surgeries to avoid developing cancer.Key Facts
- Marcos Vinicius Sampaio Vieira, a Brazilian engineer, was diagnosed with rare thyroid cancer after doctors found nodules on his thyroid.
- His cancer was linked to an inherited mutation in the RET gene, which causes hereditary medullary thyroid carcinoma, an aggressive thyroid cancer.
- People who inherit this mutation have a very high risk of developing this cancer during their lifetime.
- Marcos’s two children tested positive for the same mutation, meaning they had a 50% chance of carrying it.
- After deciding when to act, both children had their thyroids removed to prevent cancer before it developed.
- Today, both children are healthy and living normal lives thanks to early genetic testing and preventive surgery.
- The mutation was traced back to Marcos’s father using preserved tissue samples.
- Experts say genetic testing helps families understand inherited cancer risks and make early decisions to prevent disease.
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