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1.  Factor V Leiden does not have a role in cryptogenic ischemic stroke among Iranian young adults 
Background:
Different risk factors have been suggested for ischemic stroke in young adults. In a group of these patients despite of extensive diagnostic work-up, the primary cause remains unknown. Coagulation tendency is accounted as a possible cause in these patients. Previous studies on factor V Leiden (FVL) as the main cause of inherited thrombophilia for clarifying the role of FVL in stroke have resulted in controversial findings. The current study investigates the role of this factor in ischemic stroke among Iranians.
Materials and Methods:
This case-control study was performed between September 2007 and December 2008 in Isfahan, Iran. The case group comprised of 22 patients of which 15 were males and 7 were females with age range of ≤50 years, diagnosed as ischemic stroke without classic risk factors and the control group consisted of 54 healthy young adults. After filling consent form, venous blood samples were obtained and sent to the laboratory for genetic examination.
Results:
No FVL mutation was found in the case group. There was one carrier of the mutation as heterozygous in the control group (relative frequency = 1.85%).
Conclusions:
Based on our study, FVL might not be considered as an independent risk factor for ischemic stroke in Iranian individuals who are not suffering from other risk factors of ischemic stroke.
doi:10.4103/2277-9175.127993
PMCID: PMC3988598  PMID: 24761388
Cryptogenic; factor V Leiden; stroke; young adults
2.  The impact of prothrombin (G20210A) gene mutation on stroke in youths 
ARYA Atherosclerosis  2012;8(1):9-11.
BACKGROUND
Stroke in young adults is a known but abnormal disease. Several recent studies have discussed the correlation between existence of coagulation factors such as V Leiden and prothrombin mutation (G20210A) as risk factors for incidence of stroke. The present study investigated the frequency of prothrombin gene mutation and its impact on incidence of ischemic stroke in Iranian youth.
METHODS
This was a case-control study using convenient sampling method on seventy six 18 to 50-year-old people provided that they did not have classical risk factors for stroke. Case group comprised 22 patients with ischemic stroke (15 males and 7 females). Fifty four healthy people (17 males and 37 females) were selected as the control group. Participants in both groups were recruited within 26 months (23.9.2007 to 21.11.2009) in Al-Zahra Hospital, Isfahan, Iran.
RESULTS
Prothrombin was not found in any of the studied patients. Heterozygous mutation was observed in one of the samples of the control group (1.85%).
CONCLUSION
Despite the known effect of prothrombin gene mutation on incidence of venous thrombosis, it does not seem this factor, as an independent factor, can be considered as a risk factor to create ischemic stroke in people who do not have other risk factor.
PMCID: PMC3448394  PMID: 23056093
Prothrombin Mutation; Stroke; Youth; Risk Factor

Results 1-2 (2)