Cellsearch is the company that Dr. Cristofanilli presented with at ASCO 2019 and according to the article below the only FDA approved for CTCs (maybe more now)? I thought RP was previously listed on this presentation, but currently is not.....I couldn’t find any abstracts with him listed, but pretty sure he was previously listed on 2 presentations.

ASCO 2019 CTC Abstract
https://abstracts.asco.org/239/AbstView_239_257355.html

Article stating Cellsearch CTC approved by FDA
https://www.mayocliniclabs.com/articles/features/ctc/