Genetic variant
rs74799832 a variant in the RET gene
rs74799832 is a single-letter difference in the RET gene, on chromosome 10. ClinVar, the public archive of variant interpretations, lists it as likely pathogenic: probably able to cause or contribute to disease. It has been reported in connection with Multiple endocrine neoplasia type 2B and Thyroid carcinoma, sporadic medullary, among others. Carrying it does not, on its own, mean you have or will develop any condition.
What is this?
Your DNA is a long sequence of four letters. At a few million positions, people commonly differ by a single letter; each of those positions is called a SNP (“snip”), and rs74799832 is the catalogue number of one of them, in the RET gene. Which letters you carry there — one copy from each parent — is your genotype.
RET (ret proto-oncogene): This gene encodes a transmembrane receptor and member of the tyrosine protein kinase family of proteins. Binding of ligands such as GDNF (glial cell-line derived neurotrophic factor) and other related proteins to the encoded receptor stimulates receptor dimerization and activation of downstream signaling pathways that play a role in cell differentiation, growth, migration and survival.
Gene description from NCBI Gene
The oxygen affinity of haemoglobin Tak, a variant with an elongated beta chain. Cloning and expressi...
From SNPedia
Why might it matter?
ClinVar records this variant as likely pathogenic, meaning probably able to cause or contribute to disease. A classification describes the variant, not you: what it means for one person depends on their genotype, their family history and often on other genes and circumstances.
Conditions it has been reported with
- Multiple endocrine neoplasia type 2B
- Thyroid carcinoma, sporadic medullary
- Pheochromocytoma
- Multiple endocrine neoplasia type 2A
- Multiple endocrine neoplasia, type 2
- 8 conditions
- Medullary thyroid carcinoma
- Familial medullary thyroid carcinoma
- Hirschsprung disease, susceptibility to
- 1
- Hereditary cancer-predisposing syndrome
- RET-related disorder
Listed in ClinVar submissions for this variant. Being listed is a report of an association, not a statement that the variant causes the condition in any given person.
Do I have this variant?
If you have taken a consumer DNA test (23andMe, AncestryDNA and similar), you can download its raw data file and check. Create a free account, upload the file, and this page will show the letters you carry at rs74799832, if your test read this position.
Connect this with your blood results
A gene is a fixed instruction; a blood test shows what your body is doing now. CheckMyBloods reads the two side by side, so a variant can be set against the markers it could plausibly affect.
Blood markers do not diagnose a genetic condition, and a variant does not explain a blood result on its own. Together, with symptoms and family history, they give a clinician context.
What should I do next?
- Find out whether you carry it. Reading about a variant says nothing about you until you know your genotype.
- Put it in context. Add your blood results, so the variant can be read against what your body is doing.
- Ask questions. Dr. Hemsworth, our AI assistant, can explain this variant and your results in plain English.
- Take anything that worries you to a professional. A GP or genetic counsellor can order a confirmatory test and interpret it with your history.
This page is general information drawn from public research databases. It cannot diagnose anything, and it is not a substitute for advice from a doctor or genetic counsellor who knows your history.
Technical details
- dbSNP ID
- rs74799832
- Gene
- RET
- Position
- chr10:43121968
- ClinVar classification
- Pathogenic/Likely pathogenic
Sources
- dbSNP: rs74799832 — the reference record
- ClinVar — clinical interpretations submitted by laboratories
- SNPedia — community-written summaries
- NCBI Gene: RET
- Ensembl: RET