TY - JOUR
T1 - Age-Related Macular Degeneration in Patients With Chronic Myeloproliferative Neoplasms
AU - Bak, Marie
AU - Sørensen, Torben Lykke
AU - Flachs, Esben Meulengracht
AU - Zwisler, Ann-Dorthe
AU - Juel, Knud
AU - Frederiksen, Henrik
AU - Hasselbalch, Hans Carl
PY - 2017/8
Y1 - 2017/8
N2 - OBJECTIVE To compare the risk of AMD in patients with MPNs with the risk of AMD in matched controls from the general population. DESIGN, SETTING, AND PARTICIPANTS A nationwide population-based cohort study using Danish registers was conducted of all patients in Denmark who received a diagnosis between January 1, 1994, and December 31, 2013, of essential thrombocythemia, polycythemia vera, myelofibrosis, or unclassifiable MPNs. For each patient, 10 age- and sex-matched controls were included. All patients without prior AMD were followed up from the date of diagnosis (or corresponding entry date for the controls) until the first AMD diagnosis, death or emigration, or December 31, 2013, whichever occurred first. Data analysis was performed from April 1, 2015, to October 31, 2016. MAIN OUTCOMES AND MEASURES Incidence of AMD recorded in specialized hospital-based care. The rates and absolute risk of AMD were calculated. Using Cox proportional hazards regression models, smoking and risk-time adjusted hazard ratios (HRs) between patients and controls were calculated. In addition, HRs of neovascular AMD after 2006 were calculated since antivascular endothelial growth factor treatment was introduced nationwide at hospitals thereafter. RESULTS A total of 7958 patients with MPNs (4279 women [53.8%] and 3679men [46.2%]; mean [SD] age at diagnosis, 66.4 [14.3] years) were included in the study. The rate of AMD per 1000 person-years at risk was 5.2 (95%CI, 4.6-5.9) for patients with MPNs (2628 with essential thrombocythemia, 3063 with polycythemia vera, 547 withmyelofibrosis, and 1720 with unclassifiable MPNs) and 4.3 (95%CI, 4.1-4.4) for the 77 445 controls, while the 10-year risk of AMD was 2.4%(95%CI, 2.1%-2.8%) for patients with MPNs and 2.3%(95%CI, 2.2%-2.4%) for the controls. The risk of AMD was increased overall for patients with MPNs (adjusted HR, 1.3; 95%CI, 1.1-1.5), with adjusted HRs for the subtypes of 1.2 (95%CI, 1.0-1.6) for essential thrombocythemia, 1.4 (95%CI, 1.2-1.7) for polycythemia vera, 1.7 (95%CI, 0.8-4.0) formyelofibrosis, and 1.5 (95%CI, 1.1-2.1) for unclassifiable MPNs. In addition, patients with MPNs had a higher risk of neovascular AMD (adjusted HR, 1.4; 95%CI, 1.2-1.6). CONCLUSIONS AND RELEVANCE Our results suggest that patients with MPNs are at increased risk of AMD, supporting the possibility that systemic inflammation is involved in the pathogenesis of AMD.
AB - OBJECTIVE To compare the risk of AMD in patients with MPNs with the risk of AMD in matched controls from the general population. DESIGN, SETTING, AND PARTICIPANTS A nationwide population-based cohort study using Danish registers was conducted of all patients in Denmark who received a diagnosis between January 1, 1994, and December 31, 2013, of essential thrombocythemia, polycythemia vera, myelofibrosis, or unclassifiable MPNs. For each patient, 10 age- and sex-matched controls were included. All patients without prior AMD were followed up from the date of diagnosis (or corresponding entry date for the controls) until the first AMD diagnosis, death or emigration, or December 31, 2013, whichever occurred first. Data analysis was performed from April 1, 2015, to October 31, 2016. MAIN OUTCOMES AND MEASURES Incidence of AMD recorded in specialized hospital-based care. The rates and absolute risk of AMD were calculated. Using Cox proportional hazards regression models, smoking and risk-time adjusted hazard ratios (HRs) between patients and controls were calculated. In addition, HRs of neovascular AMD after 2006 were calculated since antivascular endothelial growth factor treatment was introduced nationwide at hospitals thereafter. RESULTS A total of 7958 patients with MPNs (4279 women [53.8%] and 3679men [46.2%]; mean [SD] age at diagnosis, 66.4 [14.3] years) were included in the study. The rate of AMD per 1000 person-years at risk was 5.2 (95%CI, 4.6-5.9) for patients with MPNs (2628 with essential thrombocythemia, 3063 with polycythemia vera, 547 withmyelofibrosis, and 1720 with unclassifiable MPNs) and 4.3 (95%CI, 4.1-4.4) for the 77 445 controls, while the 10-year risk of AMD was 2.4%(95%CI, 2.1%-2.8%) for patients with MPNs and 2.3%(95%CI, 2.2%-2.4%) for the controls. The risk of AMD was increased overall for patients with MPNs (adjusted HR, 1.3; 95%CI, 1.1-1.5), with adjusted HRs for the subtypes of 1.2 (95%CI, 1.0-1.6) for essential thrombocythemia, 1.4 (95%CI, 1.2-1.7) for polycythemia vera, 1.7 (95%CI, 0.8-4.0) formyelofibrosis, and 1.5 (95%CI, 1.1-2.1) for unclassifiable MPNs. In addition, patients with MPNs had a higher risk of neovascular AMD (adjusted HR, 1.4; 95%CI, 1.2-1.6). CONCLUSIONS AND RELEVANCE Our results suggest that patients with MPNs are at increased risk of AMD, supporting the possibility that systemic inflammation is involved in the pathogenesis of AMD.
KW - Journal Article
U2 - 10.1001/jamaophthalmol.2017.2011
DO - 10.1001/jamaophthalmol.2017.2011
M3 - Journal article
C2 - 28655032
SN - 2168-6165
VL - 135
SP - 835
EP - 843
JO - JAMA Ophthalmology
JF - JAMA Ophthalmology
IS - 8
ER -
