Survival improvement by decade of patients aged 0-14 years with acute lymphoblastic leukemia: a SEER analysis.
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ABSTRACT:
SUBMITTER: Ma H
PROVIDER: S-EPMC3936227 | biostudies-literature | 2014 Feb
REPOSITORIES: biostudies-literature
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Survival improvement by decade of patients aged 0-14 years with acute lymphoblastic leukemia: a SEER analysis.
Ma Haiqing H Sun Huanhuan H Sun Xiaoping X
Scientific reports 20140227
To evaluate treatment outcomes in children with acute lymphoblastic leukemia (ALL) over the past 3 decades, we assessed the survival of children with ALL in the Surveillance, Epidemiology, and End Results (SEER) database. Among 12,096 patients from 18 SEER sites diagnosed from 1981 to 2010, survival rates improved each decade from 74.8% to 84.5% to 88.6% at 5 years and from 69.3% to 80.9% to 85.5% at 10 years (P < 0.0001). For ages 10-14 years, 10-year survival increased by more than 20 percenta ...[more]
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Project description:We conducted a surveillance epidemiology and end results (SEER)-based analysis to describe the incidence and characteristics of second primary acute lymphoblastic leukemia (sALL) among adults (≥18 years) with a history of primary malignancies (1M). Standardized incidence ratios (SIRs) of sALL cases were calculated by site and 1M stage. We also evaluated the differences in 5-year sALL survival by age, site, and extent of 1M, latency of sALL after 1M, and evidence of underlying racial/ethnic disparity. We identified 10,956 patients with de-novo/primary acute lymphoblastic leukemia (1ALL) and 772 with sALL. Women (49.1% vs. 42.9%), white patients (72.0% vs. 59.5%), older patients (58.8% vs. 25.2%; age ≥65 years), and patients diagnosed between 2003 and 2012 (66.8% vs. 53.9%) had a higher proportion of sALL compared with 1ALL. There was a significantly inferior median 5-year survival for sALL patients compared to 1ALL (6 vs. 15 months; HR 1.20, 95% CI 1.10-1.31, P < 0.001). The median latency period was 60.0 months; the most common 1M among sALL patients were breast (17.9%) and prostate (17.4%). Patients with any 1M were at increased risk of developing sALL (SIR 1.76, 95% CI 1.58-1.95, P < 0.001). Hematological-1M sites had significantly higher SIRs (hematological-SIR 7.35; solid-SIR 1.33; P < 0.001). We observed a significant increase in sALL incidence after a 1M and a significantly worse 5-year survival with different demographic characteristics from 1ALL. There is a need to define appropriate screening methods for patients surviving their primary cancer.
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