Temporal improvements in loco-regional failure and survival in patients with anal cancer treated with chemo-radiotherapy: treatment cohort study (1990-2014)
Sekhar, Hema Malcomson, Lee Kochhar, Rohit Sperrin, M Alam, Nooreen Chakrabarty, Bipasha Fulford, Paul E Wilson, Malcolm S O'Dwyer, Sarah T Saunders, Mark P
Sekhar, Hema
Malcomson, Lee
Kochhar, Rohit
Sperrin, M
Alam, Nooreen
Chakrabarty, Bipasha
Fulford, Paul E
Wilson, Malcolm S
O'Dwyer, Sarah T
Saunders, Mark P
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Abstract
BACKGROUND:
We evaluated oncological changes in patients with squamous cell carcinoma of the anus (SCCA) treated by chemoradiotherapy (CRT) from a large UK institute, to derive estimates of contemporary outcomes.
METHODS:
We performed a treatment-cohort analysis in 560 patients with non-metastatic SCCA treated with CRT over 25 years. The primary outcomes were 3-year loco-regional failure (LRF), 5-year overall survival (OS), and 5-year cancer-specific survival (CSS). We developed prediction models; and overlaid estimates on published results from historic trials.
RESULTS:
Age distributions, proportions by gender and cT stage remained stable over time. The median follow-up was 61 (IQR: 36-79) months. Comparing the first period (1990-1994) with the last period (2010-2014), 3-year LRF declined from 33 to 16% (Ptrends?<?0.001); 5-year OS increased from 60% to 76% (Ptrends?=?0.001); and 5-year CCS increased from 62% in to 80% (Ptrends?=?0.001). For 2020, the models predicted a 3-year LRF of 14.7% (95% CIs: 0-31.3); 5-year OS of 74.7% (95% CIs: 54.6-94.9); and 5-year CSS of 85.7% (95% CIs: 75.3-96.0). Reported oncological outcomes from historic trials generally underestimated contemporary outcomes.
CONCLUSIONS:
Current and predicted rates for 3-year LRF and 5-year survivals are considerably improved compared with those in historic trials.
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Date
2020
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Article
Citation
Sekhar H, Malcomson L, Kochhar R, Sperrin M, Alam N, Chakrbarty B, et al. Temporal improvements in loco-regional failure and survival in patients with anal cancer treated with chemo-radiotherapy: treatment cohort study (1990-2014). Br J Cancer. 2020.