Abstract P180: Proximity To Telomeres Or A+t Content Suffices To Project Monogenic Hypertension At An 80 % Matching Rate
Hypertension remains the single biggest risk factor contributing to the global burden of disease and mortality. Despite the prevalence of individuals with elevated blood pressure, the role of genetics in hypertension is poorly understood. We have recently demonstrated that mutations causative to the congenital disorder can be projected by a stochastic approach centered on chromosomal characteristics of proximity to telomeres (F(i)) and adenine and thymine (A+T) content (F(ii)). Here, we investigated the two chromosomal factors, F(i) and F(ii), to determine whether they are associated with high mutation rates in human genes related to essential and monogenic hypertension (MH). In essential hypertension, the mismatch of two factors and the disease as well as the correlation between the full-length size of the genes and A+T content was either unexpectedly low (~53%) or statistically insignificant. When we examined 79 genes susceptible to MH and contributing to the genetic architecture of hypertension focusing on the factor-disease matching rate, 64 of 79 genes exclusively satisfied either the F(i) or F(ii) condition. Unlike the previous study on essential hypertension, a quarter of these genes displayed high A+T content at higher than 59%. 16% of genes (13 of 79) associated with hypertension met neither F(i) nor F(ii). Furthermore, 2 of 79 genes met both F(i) and F(ii). Our analysis suggests that these two factors can explain the cause of genetic mutations in 79 loci proposed in MH roughly at an 80% rate. In comparison, these two factors proposed can only explain the cause of idiopathic disease such as essential hypertension at a rate comparable to flipping a coin (50 %). The proposed genomic analyses demonstrate an intermediate matching rate or a mediocre predictability (~75% or less) between the cause of genetic mutations and the disease in the cases of congenital heart disease, thoracic aortic aneurysm, and age-related degenerative disorder.