Parental consanguinity and family history of coronary artery disease strongly predict early stenosis.
BACKGROUND
Coronary artery disease (CAD) is a multifactorial disease with acquired and inherited components.


OBJECTIVE
We investigated the roles of family history and consanguinity on CAD risk and age at diagnosis in 4284 patients. The compounded impact of diabetes, hyperlipidemia, hypertension, smoking, and BMI, which are known CAD risk factors, on CAD risk and age at diagnosis was also explored.


METHODS
CAD was determined by cardiac catheterization. Logistic regression and stratification were performed to determine the impact of family history and consanguinity on risk and onset of CAD, controlling for diabetes, hyperlipidemia, hypertension, smoking, and BMI.


RESULTS
Family history of CAD and gender significantly increased the risk for young age at diagnosis of CAD (p<0.001). Consanguinity did not promote risk of CAD (p=0.38), but did affect age of disease diagnosis (p<0.001). The mean age at disease diagnosis was lowest, 54.8 years, when both family history of CAD and consanguinity were considered as unique risk factors for CAD, compared to 62.8 years for the no-risk-factor patient category (p<0.001).


CONCLUSIONS
Family history of CAD and smoking are strongly associated with young age at diagnosis. Furthermore, parental consanguinity in the presence of family history lowers the age of disease diagnosis significantly for CAD, emphasizing the role of strong genetic and cultural CAD modifiers. These findings highlight the increased role of genetic determinants of CAD in some population subgroups, and suggest that populations and family structure influence genetic heterogeneity between patients with CAD.
Youhanna
Sonia
S
Lebanese American University, School of Medicine, Beirut 1102 2801, Lebanon.
Platt
Daniel E
DE
Rebeiz
Abdallah
A
Lauridsen
Michael
M
Deeb
Mary E
ME
Nasrallah
Antoine
A
Alam
Samir
S
Puzantian
Houry
H
Kabbani
Samer
S
Ghoul
Melanie
M
Zreik
Tony G
TG
el Bayeh
Hamid
H
Abchee
Antoine
A
Zalloua
Pierre
P
D000368:Aged; D016022:Case-Control Studies; D003241:Consanguinity; D003251:Constriction, Pathologic / Q000175:diagnosis / Q000209:etiology / Q000235:genetics*; D003324:Coronary Artery Disease / Q000175:diagnosis / Q000209:etiology / Q000235:genetics*; D005192:Family Health; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012044:Regression Analysis; D012307:Risk Factors