Nature Communications (Feb 2021)

Association of PET-based estradiol-challenge test for breast cancer progesterone receptors with response to endocrine therapy

  • Farrokh Dehdashti,
  • Ningying Wu,
  • Cynthia X. Ma,
  • Michael J. Naughton,
  • John A. Katzenellenbogen,
  • Barry A. Siegel

DOI
https://doi.org/10.1038/s41467-020-20814-9
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 9

Abstract

Read online

Clinical estrogen receptor (ER) testing for breast cancer is limited in predicting response to endocrine therapy (ET). In this phase 2 clinical trial, authors demonstrate that the responsiveness to ET can be predicted by use of PET/CT with 21-[18F]fluorofuranylnorprogesterone (FFNP) to detect the change in tumor progesterone receptor (PgR) levels after a one-day estradiol challenge.