{
    "resourceType": "familymemberhistory-genetic",
    "extension": [
                  {
                  "url": "http://hl7.org/fhir/StructureDefinition/family-member-history-genetics-observation",
                  "valueReference": {
                  "reference": "DiagnosticReport/dgf1"
                  }
                  }
                  ],
    "patient": {
        "reference": "Patient/example"
    },
    "status": "completed",
    "relationship": {
        "coding": [
                   {
                   "system": "http://hl7.org/fhir/familial-relationship",
                   "code": "MTH",
                   "display": "Mother"
                   }
                   ]
    }
}