Uit de transcript Q2 2019:
GLPG blijft interesse hebben TYK2, mogelijk in combinatie met Filgotinib ...
James Quigley -- JP Morgan -- Analyst
Hello. Thanks for taking my question. Just one quick one on the JAK1/TYK2, which was discontinued, is TYK2 still a mechanism that you'd like to develop drugs forms[Phonetic], especially given that the Bristol drug is progressing relatively rapidly? I'll go with that. [Phonetic]Thank you.
Walid Abi-Saab -- Chief Medical Officer
Yes. Thank you, James. Yes. TYK2 is an area that we're interested in developing compounds in this area. And as you've been saying for a long period of time, having also our own JAK1, which is very advanced, and filgotinib offers an opportunity to consider combination treatment which would really enable us to address key unmet medical need in these indications.
Just keep in mind how much more improvement is needed in these patients. I remind you, we talk about ACR50s of around 40% or 50%. ACR70s at about 20% or 30%. Those numbers should be ACR70's around 70% and already 80%. There's a huge room for improvement. Combination therapy, with our filgotinib is an important strategy. Toledo will be also a very important strategy for us to achieve those goals. And that's what we're striving toward.