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Table 1 DLCN Diagnostic Criteria for FH

From: The genetics and screening of familial hypercholesterolaemia

Group 1: Family History

Points

     i. First-degree relative with premature CHDa

1

     ii. First-degree relative with LDL-C > 95th percentile by age, gender for country

1

     iii. First-degree relative with tendinous xanthomata and/or arcus cornealis

2

     iv. Children under 18 years with LDL-C > 95th percentile by age, gender for country

2

Group 2: Clinical History

Points

     i. Premature CHD

2

     ii. Premature cerebrovascular or peripheral vascular disease

1

Group 3: Physical Examination Points

 

     i. Tendinous xanthomata

6

     ii. Arcus cornealis prior to 45 years

4

Group 4: LDL-C Levels

Points

     i. LDL-C > 8.5 mmol/l (~330 mg/dl)

8

     ii. LDL-C 6.5-8.4 mmol/l (~250-329 mg/dl)

5

     iii. LDL-C 5.0-6.4 mmol/l (~190-249 mg/dl)

3

     iv. LDL-C 4.0-4.9 mmol/l (~155-189 mg/dl)

1

Group 5: DNA Analysis Points

 

     i. Causative mutation in the LDLR, ApoB or PCSK9 gene

8

Total Score: -

     Definite FH > 8 points

     Probable FH: 6–8 points

     Possible FH: 3–5 points

     Unlikely FH: 0–2 points

Genetic Testing For: -

     i. Patients with a score > 5 points

     ii. Patients with an obvious diagnosis of xanthomata with high cholesterol and a CHD family history

Causative Mutation Found: -

     Genetic testing for all first degree relatives

  1. aCHD Before age 55 (men), 60 (women)