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Key elements of the NICE FH Guideline and the work of the HEART UK FH GIT. Jonathan Morrell Hastings. National Health Checks 2009. Asymptomatic Non-smoker 124/62 Father died MI 49, paternal uncle angina 52, paternal grandfather sudden death 54 2 sons aged 6 and 3 2 brothers and 1 sister.

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key elements of the nice fh guideline and the work of the heart uk fh git

Key elements of the NICE FH Guideline and the work of the HEART UK FH GIT

Jonathan Morrell

Hastings

banker 31
Asymptomatic

Non-smoker

124/62

Father died MI 49, paternal uncle angina 52, paternal grandfather sudden death 54

2 sons aged 6 and 3

2 brothers and 1 sister

TC 9.8 HDL 1.4 TG 1.1

Banker 31
prevalence of 1 0 dyslipidaemias
Prevalence of 10 Dyslipidaemias

Hypercholesterolaemia

Polygenic (common, 1 in 50)

Heterozygous FH (HeFH) (approx. 1 in 500)

Homozygous FH (HoFH) (approx. 1 in 1,000,000)

Hypertriglyceridaemia

Familial lipoprotein lipase deficiency (approx. 1 in 1,000,000)

Familial apolipoprotein CII deficiency (approx. 1 in 1,000,000)

Familial hypertriglyceridaemia (approx. 1 in 100)

Combined Hyperlipidaemia

Familial combined hyperlipidaemia (approx. 1 in 100)

Familial type III hyperlipidaemia (approx. 1 in 5,000)

slide6

Survey UK Lipid Clinics

Missing >85%

of predicted

  • How Common is FH ?
  • It is Common - Frequency FH ~1/500 120,000 in UK
  • It is underdiagnosed < 15,000 known, particularly in the < 35 years group (600/14,000 children)

Same as childhood diabetes

Marks, et al 2004

HEARTUK 2008

Neil, et al BMJ 2000

fh natural history
FH – natural history

Slack, Lancet.1969;1380-2

slide8

LDL- C Burden in FH patients

Starr et al 2008

FH patients have high LDL-C from Birth  high LDL-C BURDEN

LDL - Burden =

LDL-C level x

years exposure

Like smoking pack-years

By 45yrs FH patient has accumulated LDL-C exposure of non- FH 70yr old, explaining high CHD risk and need for aggressive lipid-lowering

slide9

Can LDL-C be lowered in FH patients?

Hadfield et al 2007

3.3 mmol/l

Overall

~ 50% reduction

6.7 mmol/l

But 34% > 4.0mmol/l

and 12% > 5.0mmol/l

n = 249

Low potency (cheap) Simvastatin 40 is inadequate for >95% FH patients

Combination therapy may be needed to achieve target

slide10

20-59 year olds

Pre Statin

1988–1992

> 2 fold

Post Statin

1992–1999

Statins reduce CHD in FH

Simon Broome UK-FH Register papers, BMJ 1991, Athero 1999,

8.1 = >23 yrs reduction

in life expectancy

~ 9 years gained by statins

slide11

Cancer and Total Mortality

Cancer

1980-91 (14)

1992-06 (76)

Total

1980-91 (55)

1992-06 (315)

Current Life Expectancy in treated FH patients

Neil et al E Heart J 2008

Age 20-79 years

CHD Mortality in those with/without CHD

Secondary

1980-91 (25)

1992-06 (108)

- 34%

- 25%

Primary

1980-91 (12)

1992-06 (45)

- 48%

- 29%

Based on 2766 (1456 M/1310 F) DFH + PFH patients. 190 CHD and 90 cancer deaths (37727 person years follow-up)

clinical signs
Clinical signs

Eliza Parachute 1851

simon broome criteria
Simon Broome criteria

Definite FH:

TC > 6.7 mmol/l or LDL-C >4.0 mmol/l (child <16y)

or TC > 7.5 mmol/l or LDL-C >4.9 mmol/l (adult)

(levels either pre-treatment or highest on treatment)

plus

tendon xanthomas in patient, or in 10 relative (parent, sibling, child), or in 20 relative (grandparent, uncle, aunt)

or

DNA-based evidence of an LDL receptor mutation, familial defective apo B-100, or a PCSK9 mutation.

Possible FH is defined as above lipids plus one of:

family history of myocardial infarction: below age of 50 years in 20 relative or below age 60 years in 10 relative

or

family history of raised TC >7.5 mmol/l in adult 10 or 20 relative or > 6.7 mmol/l in child or sibling <16y

the ldl receptor
The LDL receptor

Brown and Goldstein

identified autosomal

dominant LDLR defect in FH

fibroblasts in 1974

the ldl receptor pathway
The LDL-receptor pathway

ApoB3500 defects (binding ligand). 3-10%. Less severe phenotype

LDL receptor defect.80-95% of cases

Autosomal recessive hypercholesterolaemia. Rare

PCSK9 defect. Gain and loss of function mutations. 2%

Soutar, A Nat Clin Pract Cardiovasc Med 2006; 4:214

slide21

UCL 2008 Database of published LDLR mutations

Leigh et al Annals Hum Genet 2008

1066 different causes of FH reported world-wide

www.ucl.ac.uk/ldlr

Single base changes

+ small dels

W-Wide n = 949

UK n = 208

*

*p = 0.01

slide23

Key priorities

Diagnosis

  • Use the Simon Broome criteria to diagnose FH
  • All individuals should be offered a DNA test to confirm the diagnosis and to assist in cascade testing of relatives
  • CHD risk estimation tools such as those based on the Framingham algorithm should not be used because people with FH are already at a high risk of CHD.
  • In children at risk of FH because of one affected parent the following diagnostic tests should be carried out by age of 10 years :
  • - a DNA test if the family mutation is known
    • - LDL-C measurement if mutation not known
slide24

Key priorities

Management

  • Adults - Prescribe a high-intensity statin to achieve a reduction in LDL-C of > 50% from baseline (ie, before treatment).
  • Children/young people – Should be seen by a specialist in an appropriate setting, and using clinical judgement, statin therapy considered by age 10
  • All people with FH should be offered an annual regular structured review

Ongoing assessment and monitoring

  • Cascade testing - combination of DNA testing and LDL-C levels is recommended to identify affected relatives of those with a clinical FH.
  • The use of a nationwide, family-based, follow-up system is recommended to enable comprehensive identification of people affected by FH.

Identifying people with FH using cascade testing

pathway implementation
Pathway implementation
  • Scotland
  • Wales
  • Northern Ireland
  • England
nice fh guidelines1
NICE FH Guidelines

A guideline not a directive

heart uk fh guideline implementation team
HEART UK FH Guideline Implementation Team
  • Identify challenges and risks in the implementation of the NICE FH Guideline
  • Propose solutions and incorporate them into a FH Guideline Implementation toolkit
  • Support commissioning and delivery of services
heart uk fh git
HEART UK FH GIT
  • Raising profile NICE FH Guideline
  • www.heartuk.org.uk/fhgit
  • Influencing commissioning pathway
  • DH, primary care commissioning, RCGP, CV networks and SHAs
  • Support from BHF, PCCS and BCS
  • Identify service gaps (RCP audit)
  • Liaison with NICE
  • Toolkit development
heart uk fh git1
HEART UK FH GIT
  • Anniversary campaign
  • SHA events
  • Consensus meeting
  • Finalise and launch toolkit
  • Patient campaign
  • Lobbying (parliamentary and SHAs)
  • GP survey
  • FOI requests to PCTs
  • Supporting commissioning bids
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