Prognostic and predictive value of CA 19-9 in locally advanced pancreatic cancer treated with multiagent induction chemotherapy: results from a prospective, multicenter phase II trial (NEOLAP-AIO-PAK-0113).

Hartlapp I, Valta-Seufzer D, Siveke JT, Algül H, Goekkurt E, Siegler G, Martens UM, Waldschmidt D, Pelzer U, Fuchs M, Kullmann F, Boeck S, Ettrich TJ, Held S, Keller R, Anger F, Germer CT, Stang A, Kimmel B, Heinemann V, Kunzmann V, German Pancreatic Cancer Group (AIO-PAK) and NEOLAP investigators