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Federica Sabia



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    PL02 - Presidential Symposium including Top 7 Rated Abstracts (ID 89)

    • Event: WCLC 2019
    • Type: Plenary Session
    • Track:
    • Presentations: 1
    • Now Available
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      PL02.04 - Blood MicroRNA and LDCT Reduce Unnecessary LDCT Repeats in Lung Cancer Screening: Results of Prospective BioMILD Trial (Now Available) (ID 907)

      08:00 - 10:15  |  Author(s): Federica Sabia

      • Abstract
      • Presentation
      • Slides

      Background

      The National Lung Screening Trial (NLST) showed that lung cancer (LC) screening by three annual rounds of low-dose computed tomography (LDCT) reduced lung cancer mortality, and MILD trial provided additional evidence that extended intervention beyond 5 years, with annual or biennial rounds, enhanced the benefit of screening. The new bioMILD trial tested the additional value of blood microRNA (miRNA) assay at the time of LDCT on a large series of volunteers, with the aim of targeting next LDCT intervals on the basis of individual risk profile.

      Method

      BioMILD trial offered a lung cancer screening program combining LDCT and blood microRNA assay, to heavy smokers (current or former ≤10 years) aged 50-75 years (clinicaltrials.gov ID: NCT02247453). At baseline, LDCT and miRNA were tested independently with blind evaluation, choosing a 3-year interval for the next repeat in participants with double negative LDCT and miRNA.

      Result

      From January 2013 to March 2016, bioMILD prospectively enrolled 4,119 volunteers at Istituto Nazionale Tumori of Milan. The median age was 60 years, median pack-years 42, current smokers 79% and females 39%. According to baseline LDCT and miRNA profile, 2384 subjects (58%) with double negative LDCT and miRNA (2neg) were sent to 3-year LDCT repeat, 1526 (37%) with positive miRNA or indeterminate/positive LDCT (1pos) and 209 (5%) with positive miRNA and indeterminate/positive LDCT (2pos) were sent to annual or shorter LDCT repeat, depending on LDCT results. After four screening runs (LDCT 0/1/2/3), a total of 115 LCs were diagnosed (2.8%). Cumulative LC incidence was significantly different in the three groups: 0.6% for 2neg subjects, 3.8% for 1pos and 20.1% for 2pos (p<0.0001); LC mortality was 0.1%, 0.6% and 3.8% respectively (p<0.0001). Interval cancer incidence, proportion of stage I and resected LC were not statistically different among groups.

      Conclusion

      The combination of microRNA assay and LDCT is a valuable and safe tool to assess individual risk profile and reduce unnecessary LDCT repeats in lung cancer screening. Targeting LDCT intervals on individual risk profile did not cause any detrimental effects on LC detection or mortality.

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