  Non-perturbative QCD effects from Parton Distribution Functions (PDFs) may be
constrained by using high-statistics Large Hadron Collider (LHC) data.
Drell-Yan (DY) measurements in the Charged Current (CC) case provide one of the
primary means to do this, in the form of the lepton charge asymmetry. We
investigate here the impact of measurements in Neutral Current (NC) DY data
mapped onto the Forward-Backward Asymmetry ($A_{\rm FB}$) on PDF
determinations, by using the open source fit platform {\tt{xFitter}}. We
demonstrate the potential impact of $A_{\rm FB}$ data on PDF determinations and
perform a thorough analysis of related uncertainties.
