Objective To determine the efficacy of statin treatment on risk of coronary heart disease in patients with familial hypercholesterolaemia.Design Cohort study with a mean follow-up of 8.5 years.Setting 27 outpatient lipid clinics.Subjects 2146 patients with familial hypercholesterolaemia without prevalent coronary heart disease before 1 January 1990.Main outcome measures Risk of coronary heart disease in treated and “untreated” (delay in starting statin treatment) patients compared with a Cox regression model in which statin use was a time dependent variable.Results In January 1990, 413 (21%) of the patients had started statin treatment, and during follow-up another 1294 patients (66%) started after a mean delay of 4.3 years. Most patients received simvastatin (n=1167, 33 mg daily) or atorvastatin (n=211, 49 mg daily). We observed an overall risk reduction of 76% (hazard ratio 0.24 (95% confidence interval 0.18 to 0.30), P<0.001). In fact, the risk of myocardial infarction in these statin treated patients was not significantly greater than that in an age-matched sample from the general population (hazard ration 1.44 (0.80 to 2.60), P=0.23).Conclusion Lower statin doses than those currently advised reduced the risk of coronary heart disease to a greater extent than anticipated in patients with familial hypercholesterolaemia. With statin treatment, such patients no longer have a risk of myocardial infarction significantly different from that of the general population.

We confirmed previously found associations between four polymorphisms and CHD, but refuted associations for six other polymorphisms in our large FH population. These findings stress the importance of replication before genetic information can be implemented in the prediction of CHD.

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High strain is experienced by 12.8% of caregivers shortly after discharge of a stroke-surviving patient. More anxiety symptoms and lower life satisfaction in patients are independently associated with a higher level of strain in caregivers. Treating patient anxiety at an early stage might therefore lead to a decrease in long-term caregiver strain.