description: Extension to capture the penetrance of genetic variants associated with a rare disease package_name: de.medizininformatikinitiative.kerndatensatz.seltene derivation: constraint name: Penetrance type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'https://www.medizininformatik-initiative.de/fhir/ext/modul-seltene/StructureDefinition/mii-ex-seltene-penetrance'} index: 1 value: short: Quantitative penetrance percentage choices: [valueQuantity] index: 10 slicing: slices: valueQuantity: match: {} schema: short: Quantitative penetrance percentage choices: [valueQuantity] index: 10 min: 0 max: 1 valueCodeableConcept: type: CodeableConcept short: Qualitative penetrance description choiceOf: value index: 8 slicing: slices: valueCodeableConcept: match: {} schema: {type: CodeableConcept, short: Qualitative penetrance description, choiceOf: value, index: 8} min: 0 max: 1 valueQuantity: type: Quantity short: Quantitative penetrance percentage choiceOf: value index: 11 slicing: slices: valueQuantity: match: {} schema: {type: Quantity, short: Quantitative penetrance percentage, choiceOf: value, index: 11} min: 0 max: 1 value[x]: elements: unit: pattern: {type: String, value: '%'} index: 12 system: pattern: {type: Uri, value: 'http://unitsofmeasure.org'} index: 13 code: pattern: {type: Code, value: '%'} index: 14 package_version: 2026.0.0-ballot extensions: {} class: extension kind: complex-type url: https://www.medizininformatik-initiative.de/fhir/ext/modul-seltene/StructureDefinition/mii-ex-seltene-penetrance base: http://hl7.org/fhir/StructureDefinition/Extension version: 2026.0.0-ballot