<?xml version="1.0" encoding="UTF-8"?>

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="gene-element-type"/>
  <meta>
    <lastUpdated value="2026-06-23T16:20:19.822+00:00"/>
  </meta>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml">
      <p class="res-header-id">
        <b>Generated Narrative: CodeSystem gene-element-type</b>
      </p>
      <a name="gene-element-type"> </a>
      <a name="hcgene-element-type"> </a>
      <p>This case-sensitive code system 
        <code>http://hl7.org/fhir/gene-element-type</code> defines the following codes:
      </p>
      <table class="codes">
        <tr>
          <td style="white-space:nowrap">
            <b>Code</b>
          </td>
          <td>
            <b>Display</b>
          </td>
          <td>
            <b>Definition</b>
          </td>
        </tr>
        <tr>
          <td style="white-space:nowrap">promoter
            <a name="gene-element-type-promoter"> </a>
          </td>
          <td>Promoter</td>
          <td>A DNA sequence that initiates and regulates transcription of a gene.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">enhancer
            <a name="gene-element-type-enhancer"> </a>
          </td>
          <td>Enhancer</td>
          <td>A DNA sequence that increases the rate of transcription.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">silencer
            <a name="gene-element-type-silencer"> </a>
          </td>
          <td>Silencer</td>
          <td>A DNA sequence that reduces or prevents transcription.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">terminator
            <a name="gene-element-type-terminator"> </a>
          </td>
          <td>Terminator</td>
          <td>A DNA sequence that signals the end of transcription.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">repressor
            <a name="gene-element-type-repressor"> </a>
          </td>
          <td>Repressor binding site</td>
          <td>A DNA sequence to which a repressor protein binds to inhibit transcription.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">coding-sequence
            <a name="gene-element-type-coding-sequence"> </a>
          </td>
          <td>Coding sequence (CDS)</td>
          <td>The portion of a gene that encodes a protein.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">intron
            <a name="gene-element-type-intron"> </a>
          </td>
          <td>Intron</td>
          <td>A non-coding sequence within a gene that is spliced out during mRNA processing.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">ribozyme
            <a name="gene-element-type-ribozyme"> </a>
          </td>
          <td>Ribozyme</td>
          <td>A catalytic RNA element.</td>
        </tr>
      </table>
    </div>
  </text>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="brr"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
    <valueCode value="informative"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="1"/>
  </extension>
  <url value="http://hl7.org/fhir/gene-element-type"/>
  <version value="6.0.0-ballot4"/>
  <name value="GeneElementTypeExample"/>
  <title value="Gene Element Type"/>
  <status value="active"/>
  <experimental value="true"/>
  <date value="2026-06-23"/>
  <publisher value="HL7 (FHIR Project)"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://hl7.org/fhir"/>
    </telecom>
    <telecom>
      <system value="email"/>
      <value value="fhir@lists.hl7.org"/>
    </telecom>
  </contact>
  <description value="The functional role of a DNA element within a gene therapy construct."/>
  <jurisdiction>
    <coding>
      <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>
      <code value="001"/>
      <display value="World"/>
    </coding>
  </jurisdiction>
  <caseSensitive value="true"/>
  <valueSet value="http://hl7.org/fhir/ValueSet/gene-element-type"/>
  <content value="complete"/>
  <concept>
    <code value="promoter"/>
    <display value="Promoter"/>
    <definition value="A DNA sequence that initiates and regulates transcription of a gene."/>
  </concept>
  <concept>
    <code value="enhancer"/>
    <display value="Enhancer"/>
    <definition value="A DNA sequence that increases the rate of transcription."/>
  </concept>
  <concept>
    <code value="silencer"/>
    <display value="Silencer"/>
    <definition value="A DNA sequence that reduces or prevents transcription."/>
  </concept>
  <concept>
    <code value="terminator"/>
    <display value="Terminator"/>
    <definition value="A DNA sequence that signals the end of transcription."/>
  </concept>
  <concept>
    <code value="repressor"/>
    <display value="Repressor binding site"/>
    <definition value="A DNA sequence to which a repressor protein binds to inhibit transcription."/>
  </concept>
  <concept>
    <code value="coding-sequence"/>
    <display value="Coding sequence (CDS)"/>
    <definition value="The portion of a gene that encodes a protein."/>
  </concept>
  <concept>
    <code value="intron"/>
    <display value="Intron"/>
    <definition value="A non-coding sequence within a gene that is spliced out during mRNA processing."/>
  </concept>
  <concept>
    <code value="ribozyme"/>
    <display value="Ribozyme"/>
    <definition value="A catalytic RNA element."/>
  </concept>
</CodeSystem>