--- title: "MAP2K1 Y130C (c.389A>G, rs121908595) | Dante Labs" description: "ClinVar classifies MAP2K1 Y130C as Pathogenic (reviewed by expert panel). Where it sits in the genome, its predicted effect, and the Genome Test reports that look at it." url: "https://dantelabs.com/genes/map2k1/variants/y130c" --- 1. [Genes](https://dantelabs.com/genes) 2. [MAP2K1](https://dantelabs.com/genes/map2k1) 3. MAP2K1 Y130C Variant # MAP2K1 Y130C NM_002755.4(MAP2K1):c.389A>G (p.Tyr130Cys) Also known as - p.Y130C:TAT>TGT - p.Tyr130Cys - p.Y130C - rs121908595 * ClinVar classification Pathogenic * Review status 3 stars out of 4 reviewed by expert panel * Last evaluated 9 May 2017 * Expert panel ClinGen RASopathy Variant Curation Expert Panel Data current to ClinVar release 2026-10-12 · Dante Labs data release 2026.10.16-c6eea6bf Facts last changed 16 October 2026 ## Summary Y130C is a missense variant in MAP2K1: it changes a single amino acid in the protein the gene encodes. ClinVar classifies it as pathogenic for cardiofaciocutaneous syndrome (reviewed by expert panel). ## ClinVar classifications | Condition | Classification | Review status | Submissions | Last evaluated | | ------------------------------------------------------------------------------------------------------------------------------- | -------------- | ----------------------------------------- | ------------ | -------------- | | cardiofaciocutaneous syndrome[ClinVar VCV000013351 (opens in a new tab)](https://www.ncbi.nlm.nih.gov/clinvar/variation/13351/) | Pathogenic | 3 stars out of 4 reviewed by expert panel | 1 submission | 9 May 2017 | Classifications as ClinVar records them in release 2026-10-12. ClinVar updates them as evidence is reviewed. ## Where it lies in MAP2K1 Y130C lies in exon 3 of the 11 in MAP2K1's MANE Select transcript, NM_002755.4. [MAP2K1 variants in exon 3 →](https://dantelabs.com/genes/map2k1/variants?exon=3) [MAP2K1's gene diagram →](https://dantelabs.com/genes/map2k1#gene-structure) ## Molecular details | Gene | [MAP2K1](https://dantelabs.com/genes/map2k1) | | --------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------- | | Transcript | NM_002755.4 MANE Select | | Coding DNA change (HGVS c.) | c.389A>G | | Protein change (HGVS p.) | p.Tyr130Cys p.Y130C | | Predicted consequence | Missense [missense_variant (opens in a new tab)](https://purl.obolibrary.org/obo/SO_0001583) | | Predicted impact | Moderate | | Position (GRCh38) | chr15:66436843 A>G | | Position (GRCh37) | chr15:66729181 A>G | | dbSNP ID | [rs121908595 (opens in a new tab)](https://www.ncbi.nlm.nih.gov/snp/rs121908595) | | ClinVar Variation ID | [VCV000013351 (opens in a new tab)](https://www.ncbi.nlm.nih.gov/clinvar/variation/13351/) | | ClinVar Allele ID | 28390 | | ClinGen Allele Registry ID | [CA280036 (opens in a new tab)](https://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_canonicalid?canonicalid=CA280036) | | ClinVar name | NM_002755.4(MAP2K1):c.389A>G (p.Tyr130Cys) | | Other names | p.Y130C:TAT>TGT | ## MAP2K1 Y130C in other databases - [ClinVar VCV000013351 (opens in a new tab)](https://www.ncbi.nlm.nih.gov/clinvar/variation/13351/) - [dbSNP rs121908595 (opens in a new tab)](https://www.ncbi.nlm.nih.gov/snp/rs121908595) - [ClinGen Allele Registry CA280036 (opens in a new tab)](https://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_canonicalid?canonicalid=CA280036) - [gnomAD 15-66436843-A-G (opens in a new tab)](https://gnomad.broadinstitute.org/variant/15-66436843-A-G?dataset=gnomad_r4) - [Ensembl rs121908595 (opens in a new tab)](https://www.ensembl.org/Homo_sapiens/Variation/Explore?v=rs121908595) ## Reports that look at this variant (2) These Genome Test condition reports include Y130C among the variants they look at. | Report | Conditions | Inheritance | | ------------------------------------------------------------------------------------------- | -------------------------------------------- | ------------------ | | [Hypertrophic Cardiomyopathy](https://dantelabs.com/conditions/hypertrophic-cardiomyopathy) | Hypertrophic Cardiomyopathy | Autosomal dominant | | [Noonan Syndrome](https://dantelabs.com/conditions/noonan-syndrome) | Noonan Syndrome and Noonan-Related Syndromes | | ## Other variants in MAP2K1 - [D67N Pathogenic 3 stars out of 4](https://dantelabs.com/genes/map2k1/variants/d67n) - [Y130H Likely pathogenic 3 stars out of 4](https://dantelabs.com/genes/map2k1/variants/y130h) [All MAP2K1 variants](https://dantelabs.com/genes/map2k1/variants) ## Limitations This page describes publicly available information about a genetic variant. It is not a diagnosis, and it says nothing about whether you or anyone else carries this variant. Classifications come from ClinVar and change as new evidence is reviewed. A classification here may differ from the one in ClinVar today, or from the one a laboratory reports. Whole genome sequencing with short reads can miss or miscall some variants, particularly in repeated or highly similar stretches of DNA and in large insertions, deletions or rearrangements. If you have questions about a variant in your own results or in your family, talk to a genetic counsellor or your doctor. ## Sources & credits - Classifications from ClinVar (release 2026-10-12), National Center for Biotechnology Information. - Condition terms from the Mondo Disease Ontology (release 2026-10-06), used under CC BY 4.0. - Gene symbols and names from the HUGO Gene Nomenclature Committee (release 2026-10-16). - Allele identifiers from the ClinGen Allele Registry (release 2026-10-16-c4908f54). - Reference SNP identifiers from dbSNP (release b157), National Center for Biotechnology Information. - Gene–disease links from the Gene Curation Coalition, GenCC (release 2026-10-16). - Difficult regions from the Genome in a Bottle Consortium (release v3.6). - Transcripts from MANE (release v1.5), NCBI and EMBL-EBI. - Predicted consequences from mehari (release 0.11.0), with transcript models from cdot. - Built from Dante Labs data release 2026.10.16-c6eea6bf of 16 October 2026. ## Cite this page APA > Dante Labs. (16 October 2026). MAP2K1 Y130C (c.389A>G, rs121908595) (Version 2026.10.16-c6eea6bf). Retrieved 16 October 2026, from https\://dantelabs.com/genes/map2k1/variants/y130c Vancouver > Dante Labs. MAP2K1 Y130C (c.389A>G, rs121908595) \[Internet]. Version 2026.10.16-c6eea6bf. 16 October 2026 \[cited 16 October 2026]. Available from: https\://dantelabs.com/genes/map2k1/variants/y130c Download citation [RIS](https://dantelabs.com/genes/map2k1/variants/y130c/cite.ris) [BibTeX](https://dantelabs.com/genes/map2k1/variants/y130c/cite.bib) [CSL-JSON](https://dantelabs.com/genes/map2k1/variants/y130c/cite.json) ## Read your whole genome From $449 Free shipping · Results in 6–8 weeks [Explore the Genome Test](https://dantelabs.com/whole-genome-sequencing)