20.500.12556/RUL-137781 Progression of coronary calcium burden and carotid stiffness in patients with essential thrombocythemia associated with JAK2 V617F mutation Background and aims: Patients with myeloproliferative neoplasms often succumb to cardiovascular events, but little is known on the early stages of their vascular disease. We studied how patients with JAK2 V617F positive essential thrombocythemia (ET) without overt atherosclerotic disease differed from control subjects in the progression of carotid artery stiffness and preclinical atherosclerosis. Methods: Thirty-six patients with JAK2 V617F positive ET and 38 age-, gender- and Framingham coronary heart disease (CHD) -matched control subjects were examined twice within 4 years. Clinical and laboratory testing, echo-tracking ultrasound of carotid arteries, coronary calcium measurement and digital plethysmography were performed (ClinTrials.gov NCT03828422). Results: Coronary calcium correlated with the Framingham CHD risk score at the first examination in the control group (r$_s$ = 0.410), but not among the ET patients (r$_s$ = 0.116). Both groups progressed in coronary calcium, but the outliers were more prominent among ET patients. Carotid artery stiffness increased with time in the ET patients much more than in the control group: the increase in β-index 1.95 (SD 2.18) vs. 0.22 (SD 1.99), p < 0.001, and the increase in carotid pulse wave velocity 0.72 (SD 0.92) vs. 0.08 (SD 0.72) m/s, p = 0.001. There was no correlation between carotid stiffness and Framingham CHD risk in either group. Digital endothelial function did not change. Conclusion: Carotid artery stiffness progressed faster in patients with JAK2 V617F positive ET than in control subjects. Coronary calcium correlated with the Framingham CHD risk only in control subjects. This indicates that JAK2 V617F positive ET acted as a non-classical risk factor for vascular disease. essential thrombocythemia JAK2 V617F mutation arterial stiffness coronary calcium cardiovascular risk true false true Angleški jezik Ni določen Članek v reviji 2022-06-30 13:47:09 2022-06-30 13:47:10 2022-09-15 04:15:48 0000-00-00 00:00:00 2020 0 0 Str. 25-31 Vol. 296 Mar. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 616.1 0021-9150 10.1016/j.atherosclerosis.2020.01.001 6959276 1-s2.0-S0021915020300162-main.pdf 1-s2.0-S0021915020300162-main.pdf 1 971869609BF7850F3F17F3E103561E6B 2bd6777988179a6bbc7997f5ccf6125cf5d68e58ea8c20ac701625ea3663c169 aad0e867-f86a-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=157854 https://www.sciencedirect.com/science/article/pii/S0021915020300162 0 6719886e-f86a-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=157853 Medicinska fakulteta 0 0 0