Genomics Reporting Implementation Guide
3.0.0 - STU3 International flag

This page is part of the Genetic Reporting Implementation Guide (v3.0.0: STU3) based on FHIR (HL7® FHIR® Standard) R4. This is the current published version. For a full list of available versions, see the Directory of published versions

: TxImp03 - XML Representation

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<Observation xmlns="http://hl7.org/fhir">
  <id value="TxImp03"/>
  <meta>
    <profile
             value="http://hl7.org/fhir/uv/genomics-reporting/StructureDefinition/therapeutic-implication"/>
  </meta>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml">Poor metabolizer of Citalopram</div>
  </text>
  <extension
             url="http://hl7.org/fhir/StructureDefinition/workflow-relatedArtifact">
    <valueRelatedArtifact>
      <type value="citation"/>
      <url
           value="https://cpicpgx.org/guidelines/guideline-for-selective-serotonin-reuptake-inhibitors-and-cyp2d6-and-cyp2c19/"/>
    </valueRelatedArtifact>
  </extension>
  <status value="final"/>
  <category>
    <coding>
      <system
              value="http://terminology.hl7.org/CodeSystem/observation-category"/>
      <code value="laboratory"/>
    </coding>
  </category>
  <category>
    <coding>
      <system value="http://terminology.hl7.org/CodeSystem/v2-0074"/>
      <code value="GE"/>
    </coding>
  </category>
  <code>
    <coding>
      <system
              value="http://hl7.org/fhir/uv/genomics-reporting/CodeSystem/tbd-codes-cs"/>
      <code value="therapeutic-implication"/>
    </coding>
  </code>
  <subject>🔗 
    <reference value="Patient/CGPatientExample01"/>
  </subject>
  <effectiveDateTime value="2019-04-01"/>
  <performer>🔗 
    <reference value="Organization/ExampleOrg"/>
  </performer>
  <derivedFrom>🔗 
    <reference value="Observation/Pgx-geno-1001"/>
  </derivedFrom>
  <component>
    <code>
      <coding>
        <system value="http://loinc.org"/>
        <code value="51963-7"/>
      </coding>
    </code>
    <valueCodeableConcept>
      <coding>
        <system value="http://www.nlm.nih.gov/research/umls/rxnorm"/>
        <code value="2556"/>
        <display value="citalopram"/>
      </coding>
    </valueCodeableConcept>
  </component>
  <component>
    <code>
      <coding>
        <system
                value="http://hl7.org/fhir/uv/genomics-reporting/CodeSystem/tbd-codes-cs"/>
        <code value="therapeutic-implication"/>
      </coding>
    </code>
    <valueCodeableConcept>
      <coding>
        <system value="http://loinc.org"/>
        <code value="LA9657-3"/>
        <display value="Poor metabolizer"/>
      </coding>
    </valueCodeableConcept>
  </component>
  <component>
    <code>
      <coding>
        <system
                value="http://hl7.org/fhir/uv/genomics-reporting/CodeSystem/tbd-codes-cs"/>
        <code value="conclusion-string"/>
      </coding>
    </code>
    <valueString
                 value="For citalopram, a 50% reduction in starting dose is recommended with therapeutic drug monitoring to guide dose adjustment or select an alternate drug not predominantly metabolized by CYP2C19. Refer to current guidelines for dosage and recommendations at https://cpicpgx.org/guidelines/guideline-for-selective-serotonin-reuptake-inhibitors-and-cyp2d6-and-cyp2c19/. If CYP2D6 genotyping is available, refer to the current guidelines for dosing recommendations."/>
  </component>
</Observation>