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Statin initiation in childhood may reduce CVD risk in FH

Roshini Claire Anthony
6 days ago

Children with familial hypercholesterolemia (FH) who receive statin therapy in childhood could potentially delay the progression of carotid intima-media thickness and reduce their risk of cardiovascular (CV) disease (CVD) in adulthood, according to a long-term follow-up study.

“[W]e found that 20 years after enrollment in a paediatric placebo-controlled statin trial, participants with genetically defined FH had a mean progression of carotid intima-media thickness similar to that of their unaffected siblings,” said the researchers.

“[Additionally], the mean [low-density lipoprotein cholesterol (LDL-C)] level in the patients with FH had decreased by 32 percent since baseline in the original trial [and] the cumulative incidence of CV events and of death from CV causes was lower among the participants with FH than among their affected parents for whom statins were available much later in life,” they added.

Of 214 children with FH who had received pravastatin in a prior 2-year single-centre trial, 184 (mean age 31.7 years, 48 percent male) participated in the present study – conducted 20 years after the initial trial began – along with 77 of their 95 siblings not affected by FH (mean age 31.6 years, 56 percent male). The participants completed a questionnaire, had blood samples taken, and had their carotid intima-media thickness measured.

Participants were followed up for a mean 18 years, and 79 percent of patients with FH were on lipid-lowering medications.

Over 20 years, individuals with FH who initiated statin therapy in childhood (at age 8–18 years; mean age 14 years) experienced a mean 32 percent reduction from baseline in LDL-C levels (from 237.3 to 160.7 mg/dL). Conversely, their siblings without FH experienced a 24 percent increase from baseline in LDL-C levels (from 98.5 to 121.9 mg/dL). [N Engl J Med 2019;381:1547-1556]

Thirty-seven patients with FH (20 percent) achieved an LDL-C level of <100 mg/dL (target for those without CVD), with eight having levels of <70 mg/dL (target for those with CVD).

At baseline, carotid intima-media thickness was greater in patients with FH than their non-FH siblings (mean 0.446 vs 0.439 mm). Over the follow-up period, progression of carotid intima-media thickness increased at a comparable rate between patients with FH and their siblings without FH (mean 0.0056 vs 0.0057 mm/year). In patients with FH, carotid intima-media thickness differed according to whether they had reached their LDL-C targets (ie, mean 0.532 vs 0.560 mm in those who did and did not reach their LDL-C targets, respectively).

Compared with their parents with FH who had initiated statins later in life (n=156; 59 percent male, mean age of statin initiation 32 years), patients who initiated statins in childhood had a lower risk of CV events* (1 percent vs 26 percent) and CV-related deaths (0 percent vs 7 percent) in adulthood (before age 40 years).

Although only 20 percent of patients met the treatment targets, the results suggest that initiating statins in childhood has a positive impact on carotid intima-media thickness and CVD in patients with FH, said the researchers.

They noted that the observational design and self-report of adherence to lipid-lowering medications present limitations. The CVD outcomes may also not solely be the result of early statin therapy but reflect the overall improvements in health care. Nonetheless, the results are representative of real-world clinical practice, they pointed out.

 

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Most Read Articles
Stephen Padilla, 25 Jul 2019
Nonvitamin K antagonist oral anticoagulants (NOACs) appear to confer more clinical benefits to elderly patients with atrial fibrillation (AF) than vitamin K antagonist anticoagulants (VKAs), suggests a study, adding that this is primarily driven by the lower rates of major bleeding.
Rachel Soon, 05 Dec 2018

At the recent Malaysian Community Pharmacy Business Forum (MyCPBF), a discussion forum was held on the subject of “Transcending Primary Healthcare Services: The Future of Specialized Pharmacy Services and Pharmacy Specialization”.

12 Dec 2016

Associate Professor Ng Lee Ching, Director of the Environmental Health Institute (EHI) at the National Environment Agency (NEA), Singapore, speaks about the role of primary care physicians and government agencies in preventing dengue epidemics.

22 Aug 2018
In patients with atrial fibrillation (AF) naïve to oral anticoagulants (OACs), standard-dose nonvitamin K antagonist OACs (NOACs) provides better survival benefits than warfarin, a recent meta-analysis has shown.