{
  "resourceType": "SearchParameter",
  "id": "Sequence-coordinate",
  "url": "http://hl7.org/fhir/SearchParameter/Sequence-coordinate",
  "name": "coordinate",
  "status": "draft",
  "experimental": false,
  "date": "2017-04-18T21:44:43+00:00",
  "publisher": "Health Level Seven International (Clinical Genomics)",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org/fhir"
        }
      ]
    },
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://www.hl7.org/Special/committees/clingenomics/index.cfm"
        }
      ]
    }
  ],
  "code": "coordinate",
  "base": [
    "Sequence"
  ],
  "type": "composite",
  "description": "Search parameter for region of the reference DNA sequence string. This will refer to part of a locus or part of a gene where search region will be represented in 1-based system. Since the coordinateSystem can either be 0-based or 1-based, this search query will include the result of both coordinateSystem that contains the equivalent segment of the gene or whole genome sequence. For example, a search for sequence can be represented as `coordinate=1$lt345$gt123`, this means it will search for the Sequence resource on chromosome 1 and with position >123 and <345, where in 1-based system resource, all strings within region 1:124-344 will be revealed, while in 0-based system resource, all strings within region 1:123-344 will be revealed. You may want to check detail about 0-based v.s. 1-based above.",
  "expression": "Sequence.variant",
  "xpathUsage": "normal",
  "component": [
    {
      "definition": {
        "reference": "http://hl7.org/fhir/SearchParameter/Sequence-chromosome"
      },
      "expression": "%resource.referenceSeq.chromosome"
    },
    {
      "definition": {
        "reference": "http://hl7.org/fhir/SearchParameter/Sequence-start"
      },
      "expression": "start"
    },
    {
      "definition": {
        "reference": "http://hl7.org/fhir/SearchParameter/Sequence-end"
      },
      "expression": "end"
    }
  ]
}