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Simonini M, Faienza S, maggioni CM, Citterio L, Salvi E, Lanzani CL, Messaggio E, Fontana S, Cusi D, Manunta P. Abstract P122: Lanosterol Synthase (LSS) Gene As Predictor Of Kidney Dysfunction In Hypertensive Patients. Hypertension 2020. [DOI: 10.1161/hyp.76.suppl_1.p122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Recently we have proposed LSS as genotype-based risk stratification to predict accelerated eGFR decay in a prospective cohort study of essential HYP patients. We extract clinical data of a general population from HYPERGENES consortium. We also collect genetic data for LSS polymorphism that was already demonstrated as involved in kidney damage. A cohort of 3137 patients were selected. At different age, as expected, HYP status have a deep impact on eGFR. Indeed in young (age < 50ys) eGFR is higher in HYP vs control (86.2 ± 19.3 vs 82.7 ± 16.3 ml/min; p=0.04); vice-versa in elder (age > 65ys) HYP have a reduction in eGFR (55.7 ± 12.9 vs 71.0 ± 12.9 ml/min; p<0.001) and higher incidence of severe CKD (2.7% vs 0.1%; p=0.001). We do not observe a direct influence of LSS polymorphism of eGFR. When LSS is considered according to HYP status and age class it is possible to observe a preservation of age-associated eGFR reduction in normotensive patients (eGFR 91.4 vs 90.1 vs 81.8 at age classes for LSS risk allele); on the other side, LSS seems to enhance eGFR reduction associate to HYP status (eGFR 84.6 vs 75.6 vs 48.0 for LSS risk allele; p=0.032 after correction for covariates; see table for details and figure 1). Furthermore, our genomics lab just developed a LSS V642L Knock-in mouse model by CRISPR-Cas9 technique. The sequencing analysis confirmed the correct insertion of 643L mutation for both alleles in mice gene. The 642L LSS Knock-in mice at 1 month of age were viable, healthy and indistinguishable from the WT counterpart
Conclusion:
Patients caring the risk allele of this specific LSS polymorphism seems to express hyper-filtration if compared to their counterparts.
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