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| Gene | RET |
| Variant | C634S |
| Impact List | missense |
| Protein Effect | gain of function |
| Gene Variant Descriptions | RET C634S lies within the cysteine-rich region of the Ret protein (PMID: 9879991). C634S confers a gain of function on the Ret protein as demonstrated by constitutive phosphorylation of Mapk and transformation of cultured cells (PMID: 15277225, PMID: 9230192). |
| Associated Drug Resistance | |
| Category Variants Paths |
RET mutant RET act mut RET C634S RET mutant RET C634X RET C634S |
| Transcript | NM_020975.6 |
| gDNA | chr10:g.43114500T>A |
| cDNA | c.1900T>A |
| Protein | p.C634S |
| Source Database | RefSeq |
| Genome Build | GRCh38/hg38 |
| Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
|---|---|---|---|---|---|
| NM_020975.5 | chr10:g.43114500T>A | c.1900T>A | p.C634S | RefSeq | GRCh38/hg38 |
| NM_001406743.1 | chr10:g.43114500T>A | c.1900T>A | p.C634S | RefSeq | GRCh38/hg38 |
| NM_001406759.1 | chr10:g.43114500T>A | c.1900T>A | p.C634S | RefSeq | GRCh38/hg38 |
| NM_020975.6 | chr10:g.43114500T>A | c.1900T>A | p.C634S | RefSeq | GRCh38/hg38 |
| NM_020630.7 | chr10:g.43114500T>A | c.1900T>A | p.C634S | RefSeq | GRCh38/hg38 |
| NM_020630 | chr10:g.43114500T>A | c.1900T>A | p.C634S | RefSeq | GRCh38/hg38 |
| NM_001406760.1 | chr10:g.43114500T>A | c.1900T>A | p.C634S | RefSeq | GRCh38/hg38 |
| NM_001406744.1 | chr10:g.43114500T>A | c.1900T>A | p.C634S | RefSeq | GRCh38/hg38 |
| NM_001406783.1 | chr10:g.43123795T>A | c.1900T>A | p.C634S | RefSeq | GRCh38/hg38 |
| NM_020630.5 | chr10:g.43114500T>A | c.1900T>A | p.C634S | RefSeq | GRCh38/hg38 |
| NM_001406786.1 | chr10:g.43123795T>A | c.1900T>A | p.C634S | RefSeq | GRCh38/hg38 |
| NM_020975 | chr10:g.43114500T>A | c.1900T>A | p.C634S | RefSeq | GRCh38/hg38 |
| Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
|---|---|---|---|---|---|---|---|
| RET C634S | medullary thyroid carcinoma | sensitive | Selpercatinib | FDA approved - On Companion Diagnostic | Actionable | In a Phase I/II trial (LIBRETTO-001) that supported FDA approval, Retevmo (selpercatinib) treatment resulted in an objective response rate (ORR) of 69% (38/55, 5 complete and 33 partial responses) in previously treated adult and pediatric patients of 12 years and older with medullary thyroid cancer harboring RET mutations as detected by an approved test, including RET C634S; ORR was 73% (64/88) in treatment naive patients (PMID: 32846061; NCT03157128). | 32846061 detail... detail... |