Rare and low-frequency variants in ENaC subunit genes (SCNN1A, SCNN1B, and SCNN1D) were significantly associated with blood pressure traits and estimated glomerular filtration rate (P<0.00625).
Observational
Yes
Are low frequency and rare variants in ENaC subunit genes associated with blood pressure and kidney function?
Rare and low-frequency variants in ENaC subunit genes, including the extrarenal SCNN1D, are significantly associated with blood pressure and kidney function.
p-value: p=<0.00625
Background: The epithelial Na + channel (ENaC) is intrinsically linked to fluid volume homeostasis and blood pressure. Specific rare mutations in SCNN1A , SCNN1B , and SCNN1G , genes encoding the α, β, and γ subunits of ENaC, respectively, are associated with extreme blood pressure phenotypes. No associations between blood pressure and SCNN1D , which encodes the δ subunit of ENaC, have been reported. A small number of sequence variants in ENaC subunits have been reported to affect functional transport in vitro or blood pressure. The effects of the vast majority of rare and low-frequency ENaC variants on blood pressure are not known. Methods: We explored the association of low frequency and rare variants in the genes encoding ENaC subunits, with systolic blood pressure, diastolic blood pressure, mean arterial pressure, and pulse pressure. Using whole-genome sequencing data from 14 studies participating in the Trans-Omics in Precision Medicine Whole-Genome Sequencing Program, and sequence kernel association tests. Results: We found that variants in SCNN1A and SCNN1B were associated with diastolic blood pressure and mean arterial pressure ( P <0.00625). Although SCNN1D is poorly expressed in human kidney tissue, SCNN1D variants were associated with systolic blood pressure, diastolic blood pressure, mean arterial pressure, and pulse pressure ( P <0.00625). ENaC variants in 2 of the 4 subunits ( SCNN1B and SCNN1D ) were also associated with estimated glomerular filtration rate ( P <0.00625), but not with stroke. Conclusions: Our results suggest that variants in extrarenal ENaCs, in addition to ENaCs expressed in kidneys, influence blood pressure and kidney function.
Blobner et al. (Thu,) conducted a observational in Blood pressure and kidney function. Rare and low-frequency variants in ENaC subunit genes (SCNN1A, SCNN1B, SCNN1G, SCNN1D) was evaluated on Systolic blood pressure, diastolic blood pressure, mean arterial pressure, pulse pressure, and estimated glomerular filtration rate (p=<0.00625). Rare and low-frequency variants in ENaC subunit genes (SCNN1A, SCNN1B, and SCNN1D) were significantly associated with blood pressure traits and estimated glomerular filtration rate (P<0.00625).