  We report on determinations of the running mass for charm quarks from
deep-inelastic scattering reactions. The method provides complementary
information on this fundamental parameter from hadronic processes with
space-like kinematics. The obtained values are consistent with but
systematically lower than the world average as published by the PDG. We also
address the consequences of the running mass scheme for heavy-quark parton
distributions in global fits to deep-inelastic scattering data.
