Evidence map›Paper›PMID 34250387›Full record

ArticleJCO precision oncology2021

Plasma ctDNA Response Is an Early Marker of Treatment Effect in Advanced NSCLC.

Michael L Cheng, Christie J Lau, Marina S D Milan, Julianna G Supplee, Jonathan W Riess, Penelope A Bradbury, Pasi A Jänne, Geoffrey R Oxnard, Cloud P Paweletz

Open access · bronzeAbstract read
In one paragraph

Article in JCO precision oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 18% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Review
  10. Article
  11. Review
  12. Circulating Tumor DNA and [Diagnostics (Basel, Switzerland) · 2025
    Article
  13. Article
  14. NCI workshop on ctDNA in cancer treatment and clinical care.Journal of the National Cancer Institute · 2024
    Article
  15. Review
  16. Article
  17. Early Changes in Circulating Cell-Free KRAS G12C Predict Response to Adagrasib in KRAS Mutant Non-Small Cell Lung Cancer Patients.Clinical cancer research : an official journal of the American Association for Cancer Research · 2023
    Article
  18. Review
  19. Review
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 5 countries.

Michael L ChengLowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA.ORCID 0000-0002-7409-288X
Christie J LauBelfer Center for Applied Cancer Science, Dana-Farber Cancer Institute, Boston, MA.ORCID 0000-0003-4008-386X
Marina S D MilanLowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA.
Julianna G SuppleeBelfer Center for Applied Cancer Science, Dana-Farber Cancer Institute, Boston, MA.ORCID 0000-0001-8234-7937
Jonathan W RiessUniversity of California Davis Comprehensive Cancer Center, Sacramento, CA.ORCID 0000-0001-7370-7304
Penelope A BradburyDivision of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University Health Network, Department of Medicine, University of Toronto, Toronto, ON, Canada.
Pasi A JänneLowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA.
Geoffrey R OxnardLowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA.ORCID 0000-0003-1054-8240
Cloud P PaweletzBelfer Center for Applied Cancer Science, Dana-Farber Cancer Institute, Boston, MA.
Harvard University · USDana-Farber Cancer Institute · USUC Davis Comprehensive Cancer CenterUniversity Health Network · CA

Funding

Phase I Molecular and Clinical Pharmacodynamic Trials ETCTNUM1CA186717 · NCI · BECKMAN RESEARCH INSTITUTE/CITY OF HOPE · PI A. Dimitrios Colevas, Alexey V. Danilov · 2014 to 2026
$19.8M
Early change in plasma tumor DNA as a patient and trial-level diagnostic in advanced lung cancerR01CA240592 · NCI · DANA-FARBER CANCER INST · PI PAWELETZ, CLOUD PETER · 2020 to 2024
$2.2M
NCI NIH HHS R01 CA240592NCI NIH HHS UM1 CA186717
6 · The paper itself

Abstract

Plasma circulating tumor DNA (ctDNA) analysis is routine for genotyping of advanced non-small-cell lung cancer (NSCLC); however, early response assessment using plasma ctDNA has yet to be well characterized. MATERIALS AND

methodsPatients with advanced

resultsIn the NCI cohort, 14/16 (87.5%) patients exhibited ≥ 90% decrease in mutation abundance by the first on-treatment timepoint (20-28 days from treatment start) with minimal subsequent change. Similarly, 47/56 (83.9%) patients with any decrease in the institutional cohort demonstrated ≥ 90% decrease in mutation abundance by the first follow-up draw (7-30 days from treatment start). All 16 patients in the imaging cohort with radiographic partial response showed best plasma response within one cycle, preceding best radiographic response by a median of 24 weeks (range: 3-147 weeks). Variability in ctDNA levels before treatment start was observed.

conclusionPlasma ctDNA response is an early phenomenon, with the majority of change detectable within the first cycle of therapy. These kinetics may offer an opportunity for early insight into treatment effect before standard imaging timepoints.

Indexed as

AcrylamidesAniline CompoundsBiomarkers, TumorCarcinoma, Non-Small-Cell LungCirculating Tumor DNAHumansIndolesLung NeoplasmsNeoplasm StagingPyrimidinesTreatment OutcomeAcrylamidesAniline CompoundsBiomarkers, TumorCirculating Tumor DNAIndolesosimertinibPyrimidines

Identifiers

PMID34250387
PMCPMC8232122
OpenAlexW3130023215

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.