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. 2021 May 1;16:198. doi: 10.1186/s13023-021-01831-3

Table 2.

Suggested data set for a registry for undiagnosed patients

Item group Item No Item concept Concept description Content coding
1. Personal data/information 1.1 Patient's first name Patient's first name as specified on the birth certificate or identity card
1.2 Patient's (married) last name Patient's (married) last name
1.3 Patient's birth name Patient's birth name
1.4 Patient's date of birth Patient's date of birth as recorded on the birth certificate and whether Information is recorded for a foetus
1.5 City of residence Patient's current city of residence
1.6 Gender Patient's gender

Female

Male

Undetermined

Unknown (for the foetus)

2. Family information 2.1 Patient born from a relationship between related parties Is the patient born from a relationship between related parties?

Unknown

No, suspected

No, confirmed

Yes, suspected

Yes, confirmed

3. Vital Status 3.1 Patient's vital status upon inclusion into the registry Is the patient still alive?

Alive

Dead

3.2 Patient's date of death Patient's date of death
4. Care Pathway 4.1 Patient's date of inclusion in the RD centre Date at which the patient was recorded in the RD centre. Please enter the date when the patient was included in the internal medical information system
5. Disease history 5.1 Point in time at onset When were the symptoms first noticed? (Only fill date input fields if "lifetime" was selected)

Antenatal

At birth

Undetermined

lifetime

'Year of first manifestation'

'Month of first manifestation'

'Day of first manifestation

6. Diagnosis upon inclusion into the registry 6.1 Diagnosis code Prior Diagnosis (Code)
6.2 Type of code Specify which type of code is used—use ICD-10 if possible-

ICD-10

Alpha-ID

Orphacode

6.3 Description of the chosen Code Description of the chosen code. Please copy the EXACT text belonging to the code. Do NOT enter free text
6.4 Status of diagnosis Specify whether the diagnosis is already confirmed or only suspected

Unknown

Confirmed

Suspected

7. Symptom history 7.1 Diagnosis code (Symptom) Diagnosis (code) of the symptom
7.2 Type of code (Symptom) Specify which type of code is used—use HPO if possible-

HPO

SNOMED-CT

7.3 Symptom Ontology description Description from the selected code
7.4 Symptom priority Symptom priority

Unknown

High

Medium

Low

7.5 Year of first manifestation Year of first manifestation
7.6 Month of first manifestation Month of first manifestation

Unknown

January

February

March

April

May

June

July

August

September

October

November

December

E1. Vital Status E1.1 Patient's vital status Is the patient still alive

Alive

Dead

Lost to follow up

Discharged from registry

E1.2 Patient's date of death Patient's date of death
E1.3 Death due to the rare disease Is the death due to the rare disease the patient is suffering from?

Yes

No

Unknown

E2. Further Symptoms Diagnosis code (Symptom) Diagnosis (code) of the symptom
E2.1 Type of code (Symptom) Specify which type of code is used—use HPO if possible-

HPO

SNOMED-CT

E2.2 Symptom Ontology description Description from the selected code
E2.3 Symptom priority Symptom priority

Unknown

High

Medium

Low

E2.4 Year of first manifestation Year of first manifestation
E2.5 Month of first manifestation Month of first manifestation

Unknown

January,

February

March,

April

May,

June

July,

August

September

October

November

December

E3. Further Diagnosis E3.1 Diagnosis code Prior Diagnosis (Code)
E3.2 Type of code Specify which type of code is used—use ICD-10 if possible-

ICD-10

Alpha-ID

Orphacode

E3.3 Description of the chosen Code Description of the chosen code. Please copy the EXACT text belonging to the code. Do NOT enter free text
E3.4 Status of diagnosis Specify whether the diagnosis is already confirmed or only suspected

Unknown

Confirmed

Suspected

E4. Causal Diagnosis (final) E4.1 Diagnosis code Diagnosis (Code)
E4.2 Type of code Specify which type of code is used—use ICD-10 if possible-

ICD-10

Alpha-ID

Orphacode

E4.3 Description of the chosen Code Description of the chosen code. Please copy the EXACT text belonging to the code. Do NOT enter free text
E4.4 Status of diagnosis Specify whether the diagnosis is already confirmed or only suspected

Unknown

Confirmed

Suspected

E4.5 Rare Disease Is the newly found diagnosis a rare disease? (Click box)
E4.6 Year of diagnosis Year of diagnosis
E4.7 Month of diagnosis Month of diagnosis

Unknown

January

February

March

April

May

June

July

August

September

October

November

December

E5. Research E5.1 Agreement to be contacted for a protocol Does the patient give permission to be contacted for a research protocol?

Yes

No

Unknown

E5.2 Patient non-opposition to the reuse of data Is the patient non-opposite to the reuse of data?

Yes

No

Unknown

E5.3 Patient having previously given a biological sample for research Has the patient already given a biological sample for research?

Yes

No

Unknown