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News & Press: Clinical News

Lp(a) and Risk of Spontaneaous Ischemic Stroke in Children

Monday, February 3, 2014   (1 Comments)
Posted by: Sandra Tremulis
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Lipoprotein (a) and genetic polymorphisms of clotting factor V, prothrombin, and methylenetetrahydrofolate reductase are risk factors of spontaneous ischemic stroke in childhood.

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Nowak-Göttl U, Sträter R, Heinecke A, Junker R, Koch HG, Schuierer G, von Eckardstein A.
Author information
Department of Paediatrics, Institute of Clinical Chemistry and Laboratory Medicine and Institute of Arteriosclerosis Research, Westphalian Wilhelms-University Münster, Germany.


Ischemic stroke is a rare event in childhood. In approximately one third of cases no obvious underlying cause or disorder can be detected. We investigated the importance of genetic risk factors of venous thromboembolism in childhood or stroke in adulthood as risk factors for spontaneous ischemic stroke in children. One hundred forty-eight Caucasian infants and children (aged 0.5 to 16 years) with stroke and 296 age-matched controls from the same geographic areas as the patients were analyzed for increased lipoprotein (a) [Lp(a)] levels >30 mg/dL; for the presence of the factor V (FV) G1691A mutation, the prothrombin (PT) G20210A variant, and the TT677 genotype of methylenetetrahydrofolate reductase (MTHFR); and deficiencies of protein C, protein S, and antithrombin. The following frequencies (patients v controls), odds ratios (ORs), and confidence intervals (CIs) of single risk factors were found: Lp(a) >30 mg/dL (26.4% v 4.7%; OR/CI, 7.2/3.8 to 13.8; P <.0001), FV G1691A (20.2% v 4%; OR/CI, 6/2.97 to 12.1; P <.0001), protein C deficiency (6% v 0.67%; OR/CI, 9.5/2 to 44.6; P =.001), PT G20210A (6% v 1.3%; OR/CI, 4.7/1.4 to 15.6; P =.01), and the MTHFR TT677 genotype (23.6% v 10.4%; OR/CI, 2.4/1.53 to 4.5; P <.0001). A combination of the heterozygous FV G1691A mutation with increased Lp(a) (n = 11) or the MTHFR TT677 genotype (n = 5) was found in 10. 8% of cases, but only 0.3% of controls (OR/CI, 35.75/4.7 to 272; P <. 0001). Increased Lp (a) levels, the FV G1691A mutation, protein C deficiency, the prothrombin G20210A variant, and the MTHFR TT677 are important risk factors for spontaneous ischemic stroke in childhood.


Kimberly Perlstein (Shirley) says...
Posted Tuesday, April 26, 2016
My 6 year old son has elevated levels of lipoprotein a...his level is 227. Right now no one can give us any answers. Is there any research studies my son can be apart of? We just want answers. He had a blood clot in his brain 2 years ago. We found it because he had a fall on his head. They said the blood clot could have already existed or been caused by the fall but they can't say for sure. If you have any information or recommendations please get back to me. Thank you very much for your time Kimberly a concerned mommy

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