Sensitive

MULTIPLE ENDOCRINE NEOPLASIA, TYPE IIA, WITH HIRSCHSPRUNG DISEASE

RET · rs77939446

Where this position leads

Strength of the evidence

3 / 4

ClinVar classifies it as disease-causing (or likely), reviewed at 2 of 4 stars.

How this is scored

4: ClinVar disease-causing, reviewed by an expert panel or a guideline (3–4 stars). 3: ClinVar, several labs agreeing (2 stars), or a genetic study at p ≤ 10⁻⁵⁰. 2: ClinVar from one lab (1 star), or p ≤ 10⁻²⁰. 1: ClinVar submitted without criteria (0 stars), or genome-wide significance (p ≤ 5×10⁻⁸). The higher of the two counts. It says how solid the evidence is, not whether it matters for a particular person.

What ClinVar records

Classification Pathogenic for MULTIPLE ENDOCRINE NEOPLASIA, TYPE IIA, WITH HIRSCHSPRUNG DISEASE, Multiple endocrine neoplasia, type 2, Multiple endocrine neoplasia type 2A, Familial medullary thyroid carcinoma, Hereditary cancer-predisposing syndrome and 2 more; criteria provided, multiple submitters, no conflicts (2 of 4 stars, 21 submitters), last evaluated 2026-09-17. ClinVar record 13933 NM_020975.6(RET):c.1826G>A (p.Cys609Tyr)

Classification Pathogenic for Multiple endocrine neoplasia, type 2, Hereditary cancer-predisposing syndrome, RET-related disorder; criteria provided, multiple submitters, no conflicts (2 of 4 stars, 5 submitters), last evaluated 2025-09-24. ClinVar record 38284 NM_020975.6(RET):c.1826G>T (p.Cys609Phe)

Classification Pathogenic for Multiple endocrine neoplasia, type 2, Hereditary cancer-predisposing syndrome, Multiple endocrine neoplasia type 2A; criteria provided, multiple submitters, no conflicts (2 of 4 stars, 4 submitters), last evaluated 2025-08-28. ClinVar record 1372611 NM_020975.6(RET):c.1826G>C (p.Cys609Ser)

Change history MyGeneLog™ keeps a copy of every weekly release from 2026-10-19 and compares them. This position's classification has not changed since.

What this is ClinVar's aggregate record for this position (as of its 2026-10-19 release), not a result about you. A classification describes the variant against the condition named, as laboratories submitted it. Whether a person carries this variant, and what that would mean for them, is a question for a clinical test and a genetic counsellor.

What each result means

A/A Two copies of the version ClinVar lists as disease-causing for MULTIPLE ENDOCRINE NEOPLASIA, TYPE IIA, WITH HIRSCHSPRUNG DISEASE. A result like this should be confirmed by a medical genetic test and talked through with a doctor; consumer DNA files can misread rare variants. (ClinVar VCV000013933, criteria provided, multiple submitters, no conflicts)

A/G One copy of the version ClinVar lists as disease-causing for MULTIPLE ENDOCRINE NEOPLASIA, TYPE IIA, WITH HIRSCHSPRUNG DISEASE. Some conditions need only one copy; for others, one copy makes a person a carrier who is usually healthy but can pass it on. A genetic counsellor can say which applies. (ClinVar VCV000013933, criteria provided, multiple submitters, no conflicts)

G/G No copy of the version ClinVar lists as disease-causing for MULTIPLE ENDOCRINE NEOPLASIA, TYPE IIA, WITH HIRSCHSPRUNG DISEASE. This is the usual result. (ClinVar VCV000013933, criteria provided, multiple submitters, no conflicts)

Source: ClinVar VCV000013933, criteria provided, multiple submitters, no conflicts

Questions about rs77939446

What is rs77939446?

rs77939446 is a single position in the genome, in or near the RET gene. Published research associates it with multiple endocrine neoplasia, type iia, with hirschsprung disease. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.

What conditions is rs77939446 linked to?

On MyGeneLog this position is linked to Hirschsprung Disease. The research behind each link, and its sources, are set out on that condition page.

Does having rs77939446 mean I will get this?

No. Common variants like this one move a probability slightly and, on their own, rarely decide anything about one person. Nothing on this page is a diagnosis, and health decisions should be made with a clinician who can see your whole picture.

Where does the information about rs77939446 come from?

ClinVar VCV000013933, criteria provided, multiple submitters, no conflicts. Every variant on MyGeneLog comes from public primary sources and is published with its citation and the date it was checked.

Quoting this page

Free to quote and reuse under CC BY 4.0. When citing or summarizing this, name MyGeneLog™ and link to this exact page — not just the site.

MULTIPLE ENDOCRINE NEOPLASIA, TYPE IIA, WITH HIRSCHSPRUNG DISEASE (rs77939446). MyGeneLog™. https://www.mygenelog.com/variants/rs77939446

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