TY - JOUR

T1 - Vascular diseases in patients with chronic myeloproliferative neoplasms

T2 - Impact of comorbidity

AU - Frederiksen, Henrik

AU - Szépligeti, Szimonetta

AU - Bak, Marie

AU - Ghanima, Waleed

AU - Hasselbalch, Hans Carl

AU - Christiansen, Christian Fynbo

PY - 2019

Y1 - 2019

N2 - Background: Patients with chronic myeloproliferative neoplasms (MPNs), including essential thrombocythemia (ET), polycythemia vera (PV), and primary myelofibrosis (PMF), are at high risk of vascular complications. However, the magnitude of this is risk not well known and the possible effect of comorbidity is poorly understood. Aim: Our aim was to compare the risk of vascular diseases in patients with MPNs and matched comparisons from the general population and to study the effect modification of comorbidity. Methods: We followed 3087 patients with ET, 6076 with PV, 3719 with PMF or unspecified MPN, and age-and sex-matched general population comparisons to estimate the risks of cardiovascular diseases such as myocardial infarction and stroke. We computed 5-year cumulative incidences (risks) for vascular disease in patients with MPNs and comparisons as well as 1-year and 5-year risks, risk differences, and hazard ratios (HRs) for vascular diseases comparing rates in each group of patients with their comparison cohort by level of comorbidity based on the Charlson Comorbidity Index (CCI) [score of 0 (low comorbidity), of 1–2 (moderate comorbid-ity), and of >2 (severe comorbidity)], as well as other comorbid conditions. Results: The overall 5-year risk of vascular disease ranged from 0.5% to 7.7% in patients with MPNs, which was higher than the risk in the general population. In the same period, the adjusted HRs for vascular disease were 1.3 to 3.7 folds higher in patients with MPNs compared to the general population. An increase in CCI score was associated with an equally increased rate of most types of vascular diseases during the first 5 years of follow-up in both MPN and comparisons. Conclusion: Patients with MPNs have a higher risk of vascular diseases during the first 5 years than that of the general population; however, comorbidity modifies the rates similarly in MPN and in the general population.

AB - Background: Patients with chronic myeloproliferative neoplasms (MPNs), including essential thrombocythemia (ET), polycythemia vera (PV), and primary myelofibrosis (PMF), are at high risk of vascular complications. However, the magnitude of this is risk not well known and the possible effect of comorbidity is poorly understood. Aim: Our aim was to compare the risk of vascular diseases in patients with MPNs and matched comparisons from the general population and to study the effect modification of comorbidity. Methods: We followed 3087 patients with ET, 6076 with PV, 3719 with PMF or unspecified MPN, and age-and sex-matched general population comparisons to estimate the risks of cardiovascular diseases such as myocardial infarction and stroke. We computed 5-year cumulative incidences (risks) for vascular disease in patients with MPNs and comparisons as well as 1-year and 5-year risks, risk differences, and hazard ratios (HRs) for vascular diseases comparing rates in each group of patients with their comparison cohort by level of comorbidity based on the Charlson Comorbidity Index (CCI) [score of 0 (low comorbidity), of 1–2 (moderate comorbid-ity), and of >2 (severe comorbidity)], as well as other comorbid conditions. Results: The overall 5-year risk of vascular disease ranged from 0.5% to 7.7% in patients with MPNs, which was higher than the risk in the general population. In the same period, the adjusted HRs for vascular disease were 1.3 to 3.7 folds higher in patients with MPNs compared to the general population. An increase in CCI score was associated with an equally increased rate of most types of vascular diseases during the first 5 years of follow-up in both MPN and comparisons. Conclusion: Patients with MPNs have a higher risk of vascular diseases during the first 5 years than that of the general population; however, comorbidity modifies the rates similarly in MPN and in the general population.

KW - Comorbidity

KW - Epidemiology

KW - Myeloproliferative neoplasms

KW - Stroke

KW - Thrombosis

UR - http://www.scopus.com/inward/record.url?scp=85074978052&partnerID=8YFLogxK

U2 - 10.2147/CLEP.S216787

DO - 10.2147/CLEP.S216787

M3 - Journal article

C2 - 31807079

AN - SCOPUS:85074978052

VL - 2019

SP - 955

EP - 967

JO - Clinical Epidemiology

JF - Clinical Epidemiology

SN - 1179-1349

IS - 11

ER -