{
  "meta": {
    "data_length": 1,
    "message": "Proposition id prop:vtxr:521 retrieved successfully",
    "request_url": "http://api.moalmanac.org/propositions?proposition_id=prop%3Avtxr%3A521",
    "status": "success",
    "status_code": 200,
    "timestamp_elapsed": 0.001811,
    "timestamp_received": "2026-09-25T01:16:27.411964+00:00Z",
    "timestamp_returned": "2026-09-25T01:16:27.413775+00:00Z",
    "trace_id": "4d4d6ba5-f605-444d-a220-0ff8919f01fb"
  },
  "service": {
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    "name": "Molecular Oncology Almanac",
    "license": "GPL-2.0",
    "release": "draft",
    "url": "https://dev.moalmanac.org",
    "last_updated": "2026-08-02"
  },
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        "description": "Placeholder. Cat-VRS does not yet support sets of categorical variants. See the 'biomarkers' extension for biomarkers associated with this Proposition."
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        }
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                "description": "Type of cancer treatment from cancer.gov: https://www.cancer.gov/about-cancer/treatment/types"
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                "coding": {
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                "coding": {
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                "name": "therapy_strategy",
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                "relation": "relatedMatch",
                "coding": {
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                "coding": {
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                  "code": "4216937",
                  "name": "Oxaliplatin",
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              },
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                "relation": "relatedMatch",
                "coding": {
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                "description": "Associated therapeutic strategy or mechanism of action of the therapy."
              },
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                "name": "therapy_type",
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        {
          "name": "biomarkers",
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              "id": "bmkr.criterion:16",
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                "name": "BRAF p.V600E",
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                      "aliases": [
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                      "description": "VRS variation of NP_004324.2:p.Val600Glu",
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                        "name": null,
                        "aliases": [],
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                          "name": "NP_004324.2",
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                            "ga4gh:SQ.cQvw4UsHHRRlogxbWCB8W-mKD4AraM9y",
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                          "moleculeType": "protein",
                          "refgetAccession": "SQ.cQvw4UsHHRRlogxbWCB8W-mKD4AraM9y",
                          "residueAlphabet": "aa"
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                        "end": 600,
                        "sequence": "V"
                      },
                      "state": {
                        "type": "LiteralSequenceExpression",
                        "sequence": "E"
                      }
                    },
                    "relations": []
                  },
                  {
                    "type": "FeatureContextConstraint",
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                      "conceptType": "Gene",
                      "name": "BRAF",
                      "primaryCoding": {
                        "id": "coding:hgnc:1097",
                        "code": "HGNC:1097",
                        "system": "https://genenames.org",
                        "iris": [
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                          "relation": "exactMatch",
                          "coding": {
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                            "code": "ENSG00000157764",
                            "system": "https://www.ensembl.org",
                            "iris": [
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                        },
                        {
                          "relation": "exactMatch",
                          "coding": {
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                            "code": "673",
                            "system": "https://www.ncbi.nlm.nih.gov/gene",
                            "iris": [
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                        },
                        {
                          "relation": "relatedMatch",
                          "coding": {
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                            "code": "NM_004333.6",
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                            "iris": [
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                      ]
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                "extensions": [
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                    "name": "biomarker_type",
                    "value": "Somatic variant"
                  },
                  {
                    "name": "chromosome",
                    "value": "7"
                  },
                  {
                    "name": "start_position",
                    "value": 140453136
                  },
                  {
                    "name": "end_position",
                    "value": 140453136
                  },
                  {
                    "name": "reference_allele",
                    "value": "A"
                  },
                  {
                    "name": "alternate_allele",
                    "value": "T"
                  },
                  {
                    "name": "cdna_change",
                    "value": "c.1799T>A"
                  },
                  {
                    "name": "protein_change",
                    "value": "p.V600E"
                  },
                  {
                    "name": "variant_annotation",
                    "value": "Missense"
                  },
                  {
                    "name": "exon",
                    "value": 15
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                  {
                    "name": "rsid",
                    "value": "rs113488022"
                  },
                  {
                    "name": "hgvsg",
                    "value": "7:g.140453136A>T"
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                    "name": "hgvsc",
                    "value": "ENST00000288602.6:c.1799T>A"
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                ]
              }
            }
          ],
          "description": "The biomarkers associated with this Proposition, each with a `present` flag indicating if the biomarker is present (true) or absent (false). Multiple biomarkers are combined with implied AND logic."
        }
      ]
    }
  ]
}