While it's hard to predict, I personally wouldn't bet against a game changing spike in the coming decades. It's only very recently that medicine has started riding Moore's law. Robotics and miniaturization are speeding up basic research by orders of magnitude.
I don't think it's unreasonable to say that biology has achieved more in the past two decades than in all preceding history. And there's no sign that the exponential is running out.
Granted, there may be fundamental limits that we don't appreciate yet. That's the whole draw of science, we simply don't know.
