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    Analysis of lung cancer risk model (PLCO(M2012) and LLP(v2)) performance in a community-based lung cancer screening programme

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    Authors
    Lebrett, M. B.
    Balata, H.
    Evison, M.
    Colligan, D.
    Duerden, R.
    Elton, P.
    Greaves, M.
    Howells, J.
    Irion, K.
    Karunaratne, D.
    Lyons, J.
    Mellor, S.
    Myerscough, A.
    Newton, T.
    Sharman, A.
    Smith, E.
    Taylor, Benjamin
    Taylor, S.
    Walsham, A.
    Whittaker, J.
    Barber, P. V.
    Tonge, J.
    Robbins, H. A.
    Booton, R.
    Crosbie, P. A. J.
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    Affiliation
    Division of Infection, Immunity and Respiratory Medicine, The University of Manchester, Manchester
    Issue Date
    2020
    
    Metadata
    Show full item record
    Abstract
    Introduction: Low-dose CT (LDCT) screening of high-risk smokers reduces lung cancer (LC) specific mortality. Determining screening eligibility using individualised risk may improve screening effectiveness and reduce harm. Here, we compare the performance of two risk prediction models (PLCOM2012 and Liverpool Lung Project model (LLPv2)) and National Lung Screening Trial (NLST) eligibility criteria in a community-based screening programme. Methods: Ever-smokers aged 55-74, from deprived areas of Manchester, were invited to a Lung Health Check (LHC). Individuals at higher risk (PLCOM2012 score ?1.51%) were offered annual LDCT screening over two rounds. LLPv2 score was calculated but not used for screening selection; ?2.5% and ?5% thresholds were used for analysis. Results: PLCOM2012 ?1.51% selected 56% (n=1429) of LHC attendees for screening. LLPv2 ?2.5% also selected 56% (n=1430) whereas NLST (47%, n=1188) and LLPv2 ?5% (33%, n=826) selected fewer. Over two screening rounds 62 individuals were diagnosed with LC; representing 87% (n=62/71) of 6-year incidence predicted by mean PLCOM2012 score (5.0%). 26% (n=16/62) of individuals with LC were not eligible for screening using LLPv2 ?5%, 18% (n=11/62) with NLST criteria and 7% (n=5/62) with LLPv2 ?2.5%. NLST eligible Manchester attendees had 2.5 times the LC detection rate than NLST participants after two annual screens (?4.3% (n=51/1188) vs 1.7% (n=438/26 309); p<0.0001). Adverse measures of health, including airflow obstruction, respiratory symptoms and cardiovascular disease, were positively correlated with LC risk. Coronary artery calcification was predictive of LC (adjOR 2.50, 95% CI 1.11 to 5.64; p=0.028). Conclusion: Prospective comparisons of risk prediction tools are required to optimise screening selection in different settings. The PLCOM2012 model may underestimate risk in deprived UK populations; further research focused on model calibration is required. Keywords: lung cancer.
    Citation
    Lebrett MB, Balata H, Evison M, Colligan D, Duerden R, Elton P, et al. Analysis of lung cancer risk model (PLCOM2012 and LLPv2) performance in a community-based lung cancer screening programme. Thorax. 2020;75(8):661-8.
    Journal
    Thorax
    URI
    http://hdl.handle.net/10541/623170
    DOI
    10.1136/thoraxjnl-2020-214626
    PubMed ID
    32631933
    Additional Links
    https://dx.doi.org/10.1136/thoraxjnl-2020-214626
    Type
    Article
    Language
    en
    ae974a485f413a2113503eed53cd6c53
    10.1136/thoraxjnl-2020-214626
    Scopus Count
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