"This is exciting news! Introducing to the world...The second ever BD2 selective BET inhibitor: RVX-2157 !!"
Not really the second ever. Here are four others that we've previously seen, including RVX-297.
https://www.ncbi.nlm.nih.gov/pubmed/31461688
https://cancerres.aacrjournals.org/content/78/13_Supplement/DDT01-05
https://www.ncbi.nlm.nih.gov/pubmed/29656650
https://www.ncbi.nlm.nih.gov/pubmed/28974538