How to assure screening for patients in whom just-approved Vitrakvi (larotrectinib) most likely will help is something "we've been working very hard for the last nine months" to establish, Joseph Germino, vice president of medical affairs for oncology with Bayer AG, told BioWorld. "The drug is so effective – it doesn't work in everybody [but] it works in most people – that it would be a shame if somebody were not able to get it because nobody checked" for eligibility.