Related Experiment Video
Updated: Jun 6, 2026

A Method to Study the C924T Polymorphism of the Thromboxane A2 Receptor Gene
Published on: April 1, 2019
MTHFR C677T and A1298C polymorphisms and cerebral stroke in two twin gestations
Carla Arpino1, Eliana Compagnone, Denise Cacciatore
1Department of Neuroscience, Pediatric Neurology Unit Tor Vergata University of Rome, Rome, Italy.
Insights
Pediatric stroke risk increases with twin pregnancies and MTHFR gene mutations. Early folate supplementation may prevent brain damage in high-risk pregnancies.
Area of Science:
- Neurology
- Genetics
- Obstetrics
Background:
- Pediatric stroke is rare and multifactorial, potentially linked to MTHFR gene polymorphisms.
- Twin gestation with co-twin demise is a known risk factor for premature brain damage.
Observation:
- Two cases of presumed cerebral stroke in infants born from monochorionic twin pregnancies are presented.
- The other twin in each case had died in utero.
- Maternal and fetal homozygosity for MTHFR C677T and A1298C polymorphisms were noted, respectively.
Findings:
- Brain damage was diagnosed immediately before delivery in both infants.
- The study highlights the association between MTHFR gene mutations, twin gestation, and fetal/perinatal stroke.
- The exact role of specific genetic polymorphisms in cerebral stroke genesis requires further investigation.
Implications:
- Thrombophilia screening is recommended for women, especially during pregnancy and in twin gestations.
- Early folate supplementation for mothers and infants may mitigate the risk of fetal/perinatal stroke and recurrent thrombotic events.
- A multifactorial approach is crucial for managing severe fetal and perinatal cerebral vascular alterations.
Background:
Stroke in pediatric age is a rare event with a multifactorial genesis which could involve genetic factors as methylenetetrahydrofolate reductase (MTHFR) C677T and A1298C polymorphism. At the same time, twin gestation with co-twin demise is an important potential risk factor for premature brain damage.
Patients And Methods:
We describe two children presenting with presumed cerebral stroke born from two MC twin pregnancies in which the other co-twin had died in utero associated to maternal and fetal homozygosity for MTHFR C677T and MTHFR A1298C, respectively. Brain damage was diagnosed immediately before the delivery.
Conclusion:
Our observations underline the necessity to make a thrombophilia workup in women before or during pregnancy and, above all, in twin pregnancy. Data of literature are not clear about what kind of genetic polymorphism is prominent in the genesis of cerebral stroke (factor V leiden, MTHFR, activated protein C resistance, factor II G20210A). A multifactorial genesis for severe fetal and perinatal cerebral vascular alterations has been supposed; for this reason an early folate supplementation both to mother and infant could reduce the risk of brain damage due to fetal/perinatal stroke and eventual recurrence of thrombotic events.
Related Concept Videos
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
Pharmacogenetics of Phase II Enzymes: N-acetyltransferase, Thiopurine S-methyltransferase, UDP-glucuronosyltransferase
Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Principles of Pharmacogenetics: Types of Genetic Variants
