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Trends of incidence and survival of patients with chronic myelomonocytic leukemia between 1999 and 2014: A comparison between Swiss and American population-based cancer registries.

Abstract：

BACKGROUND:Chronic myelomonocytic leukemia (CMML) is a rare hematopoietic malignancy. Treatment with hypomethylating agents (HMA) was introduced between 2004 and 2006 but its impact on population-based survival remains controversial. The aim of this study was to investigate epidemiological characteristics and survival before and after introduction of HMA treatment. METHODS:We performed a population-based analysis of CMML cases reported to the Cantonal Cancer Registries in Switzerland (SWISS) and the Surveillance, Epidemiology, and End Results (SEER) Program from the United States for 1999-2006 (before HMA) and 2007-2014 (after HMA). Time trends were compared for these two time periods. RESULTS:423 and 4144 new CMML cases were reported to the SWISS and SEER registries, respectively. We observed an increasing proportion of older patients ≥75 years in the SWISS (50.3%-62.3%) compared to a decreasing one in the SEER population (59.1%-55.1%). Age standardized incidence-rates were similar and remained stable in both countries (0.32-0.38 per 100'000 py). Relative survival (RS) improved significantly in the SEER (3 years 27%-37%; 5 years 19%-23%; p < 0.001 for both) but remained stable in the SWISS population (3 years 48% to 40%; 5 years 34% to 26%; n.s. for both). CONCLUSIONS:With the exception of opposing age-trends, epidemiologic characteristics are similar in both countries and comparable to other population-based registries. RS remains poor and different time trends of population-based survival cannot be faithfully explained by HMA but most likely by changes in diagnostic accuracy within prognostically distinct age-groups.

journal_name

Cancer Epidemiol

journal_title

Cancer epidemiology

authors

Benzarti S,Daskalakis M,Feller A,Bacher VU,Schnegg-Kaufmann A,Rüfer A,Holbro A,Schmidt A,Benz R,Solenthaler M,Stussi G,Arndt V,Bonadies N,NICER Working Group.

doi

10.1016/j.canep.2019.01.003

subject

Has Abstract

pub_date

2019-04-01 00:00:00

pages

51-57

eissn

1877-7821

issn

1877-783X

pii

S1877-7821(18)30650-7

journal_volume

pub_type

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Trends of incidence and survival of patients with chronic myelomonocytic leukemia between 1999 and 2014: A comparison between Swiss and American population-based cancer registries.